97fd50773c
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEZH8oZUiU471FcZm+ONu9yGCSaT4FAmD22r0ACgkQONu9yGCS aT7QGBAAjVxynXPmbTuTPEXe4JXpIypErZCbUt8hUdtUcGkR3C7Kpv4zfz2Sqejc W2NOGNrU6OtUR+pWR+GwwqfFzop4LZl5jj46CiMZ9mY81LVVh7dNxXx6huIXkgy5 rI8oQAPNn5QaWHNANgdjCgdXRbA7FxBHDfaiGvwQbTW92wLV/w4ZH1coFxkkVdV1 eL3wZnVf0SNw0WTDiRDfCEH9Wx7RvVZ9KI/TqVOxYKv3LPl3faJVbjbQ8aP0lBxQ Vx+SB0w6C8f/P1KVIgU+1VluWsiQzHSxrliK2JCFqCoUFvZ02l3c6G4W2bQUcPw/ HqkozAywWftEXYFuXAGKnRQjX97vKABF/A7FZG3FrmP3zuzeRnFWrlheFSAccGww K/QH4avlk/ZO0XPghnVJhlOaYvNU90cimFVfillnuMdGrUdElsZuEIGLj/7KaQOB GryuTyB8ZTVFCiHQlGKUY+3DMC5SJ4aHb1lpQd/+OGqgkUXMWXc9ZFshcLcsBZUE 88ruExWq8fTmLXI6d4u/WZDi7e4pMtnP2N0ahMWC/EzpiLYQWpmVCDzQm09SnpiB T4NdBP5vR96M9EF68xNNgrIIwn3aw/yKm3VQzy6eQLtQ7zFVxIpa8jdUDR5pYYJv rAtawF7cgT0BkTaOE6LUDFNdR8feYvE87nuyL5pVN5ZLOefpgMM= =ijbU -----END PGP SIGNATURE----- Merge 4.19.198 into android-4.19-stable Changes in 4.19.198 scsi: core: Retry I/O for Notify (Enable Spinup) Required error ALSA: usb-audio: fix rate on Ozone Z90 USB headset ALSA: usb-audio: Fix OOB access at proc output media: dvb-usb: fix wrong definition Input: usbtouchscreen - fix control-request directions net: can: ems_usb: fix use-after-free in ems_usb_disconnect() usb: gadget: eem: fix echo command packet response issue USB: cdc-acm: blacklist Heimann USB Appset device usb: dwc3: Fix debugfs creation flow usb: typec: Add the missed altmode_id_remove() in typec_register_altmode() xhci: solve a double free problem while doing s4 ntfs: fix validity check for file name attribute iov_iter_fault_in_readable() should do nothing in xarray case Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl arm_pmu: Fix write counter incorrect in ARMv7 big-endian mode ARM: dts: at91: sama5d4: fix pinctrl muxing btrfs: send: fix invalid path for unlink operations after parent orphanization btrfs: clear defrag status of a root if starting transaction fails ext4: cleanup in-core orphan list if ext4_truncate() failed to get a transaction handle ext4: fix kernel infoleak via ext4_extent_header ext4: return error code when ext4_fill_flex_info() fails ext4: correct the cache_nr in tracepoint ext4_es_shrink_exit ext4: remove check for zero nr_to_scan in ext4_es_scan() ext4: fix avefreec in find_group_orlov ext4: use ext4_grp_locked_error in mb_find_extent can: bcm: delay release of struct bcm_op after synchronize_rcu() can: gw: synchronize rcu operations before removing gw job entry can: peak_pciefd: pucan_handle_status(): fix a potential starvation issue in TX path SUNRPC: Fix the batch tasks count wraparound. SUNRPC: Should wake up the privileged task firstly. s390/cio: dont call css_wait_for_slow_path() inside a lock rtc: stm32: Fix unbalanced clk_disable_unprepare() on probe error path iio: light: tcs3472: do not free unallocated IRQ iio: ltr501: mark register holding upper 8 bits of ALS_DATA{0,1} and PS_DATA as volatile, too iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR iio: ltr501: ltr501_read_ps(): add missing endianness conversion serial: sh-sci: Stop dmaengine transfer in sci_stop_tx() serial_cs: Add Option International GSM-Ready 56K/ISDN modem serial_cs: remove wrong GLOBETROTTER.cis entry ath9k: Fix kernel NULL pointer dereference during ath_reset_internal() ssb: sdio: Don't overwrite const buffer if block_write fails rsi: Assign beacon rate settings to the correct rate_info descriptor field rsi: fix AP mode with WPA failure due to encrypted EAPOL tracing/histograms: Fix parsing of "sym-offset" modifier tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing seq_buf: Make trace_seq_putmem_hex() support data longer than 8 powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() evm: Execute evm_inode_init_security() only when an HMAC key is loaded evm: Refuse EVM_ALLOW_METADATA_WRITES only if an HMAC key is loaded fuse: check connected before queueing on fpq->io spi: Make of_register_spi_device also set the fwnode spi: spi-loopback-test: Fix 'tx_buf' might be 'rx_buf' spi: spi-topcliff-pch: Fix potential double free in pch_spi_process_messages() spi: omap-100k: Fix the length judgment problem regulator: uniphier: Add missing MODULE_DEVICE_TABLE crypto: nx - add missing MODULE_DEVICE_TABLE media: cpia2: fix memory leak in cpia2_usb_probe media: cobalt: fix race condition in setting HPD media: pvrusb2: fix warning in pvr2_i2c_core_done crypto: qat - check return code of qat_hal_rd_rel_reg() crypto: qat - remove unused macro in FW loader sched/fair: Fix ascii art by relpacing tabs media: em28xx: Fix possible memory leak of em28xx struct media: v4l2-core: Avoid the dangling pointer in v4l2_fh_release media: bt8xx: Fix a missing check bug in bt878_probe media: st-hva: Fix potential NULL pointer dereferences media: dvd_usb: memory leak in cinergyt2_fe_attach mmc: via-sdmmc: add a check against NULL pointer dereference crypto: shash - avoid comparing pointers to exported functions under CFI media: dvb_net: avoid speculation from net slot media: siano: fix device register error path media: imx-csi: Skip first few frames from a BT.656 source btrfs: fix error handling in __btrfs_update_delayed_inode btrfs: abort transaction if we fail to update the delayed inode btrfs: disable build on platforms having page size 256K regulator: da9052: Ensure enough delay time for .set_voltage_time_sel HID: do not use down_interruptible() when unbinding devices EDAC/ti: Add missing MODULE_DEVICE_TABLE ACPI: processor idle: Fix up C-state latency if not ordered hv_utils: Fix passing zero to 'PTR_ERR' warning lib: vsprintf: Fix handling of number field widths in vsscanf ACPI: EC: Make more Asus laptops use ECDT _GPE block_dump: remove block_dump feature in mark_inode_dirty() fs: dlm: cancel work sync othercon random32: Fix implicit truncation warning in prandom_seed_state() fs: dlm: fix memory leak when fenced ACPICA: Fix memory leak caused by _CID repair function ACPI: bus: Call kobject_put() in acpi_init() error path platform/x86: toshiba_acpi: Fix missing error code in toshiba_acpi_setup_keyboard() clocksource: Retry clock read if long delays detected ACPI: tables: Add custom DSDT file as makefile prerequisite HID: wacom: Correct base usage for capacitive ExpressKey status bits ia64: mca_drv: fix incorrect array size calculation media: s5p_cec: decrement usage count if disabled crypto: ixp4xx - dma_unmap the correct address crypto: ux500 - Fix error return code in hash_hw_final() sata_highbank: fix deferred probing pata_rb532_cf: fix deferred probing media: I2C: change 'RST' to "RSET" to fix multiple build errors pata_octeon_cf: avoid WARN_ON() in ata_host_activate() evm: fix writing <securityfs>/evm overflow crypto: ccp - Fix a resource leak in an error handling path media: rc: i2c: Fix an error message pata_ep93xx: fix deferred probing media: exynos4-is: Fix a use after free in isp_video_release media: tc358743: Fix error return code in tc358743_probe_of() media: gspca/gl860: fix zero-length control requests media: siano: Fix out-of-bounds warnings in smscore_load_firmware_family2() mmc: usdhi6rol0: fix error return code in usdhi6_probe() media: s5p-g2d: Fix a memory leak on ctx->fh.m2m_ctx hwmon: (max31722) Remove non-standard ACPI device IDs hwmon: (max31790) Fix fan speed reporting for fan7..12 btrfs: clear log tree recovering status if starting transaction fails spi: spi-sun6i: Fix chipselect/clock bug crypto: nx - Fix RCU warning in nx842_OF_upd_status ACPI: sysfs: Fix a buffer overrun problem with description_show() blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled() blk-wbt: make sure throttle is enabled properly ocfs2: fix snprintf() checking net: mvpp2: Put fwnode in error case during ->probe() net: pch_gbe: Propagate error from devm_gpio_request_one() drm/rockchip: cdn-dp-core: add missing clk_disable_unprepare() on error in cdn_dp_grf_write() ehea: fix error return code in ehea_restart_qps() RDMA/rxe: Fix failure during driver load drm: qxl: ensure surf.data is ininitialized tools/bpftool: Fix error return code in do_batch() wireless: carl9170: fix LEDS build errors & warnings ieee802154: hwsim: Fix possible memory leak in hwsim_subscribe_all_others wcn36xx: Move hal_buf allocation to devm_kmalloc in probe ssb: Fix error return code in ssb_bus_scan() brcmfmac: fix setting of station info chains bitmask brcmfmac: correctly report average RSSI in station info brcmsmac: mac80211_if: Fix a resource leak in an error handling path ath10k: Fix an error code in ath10k_add_interface() netlabel: Fix memory leak in netlbl_mgmt_add_common RDMA/mlx5: Don't add slave port to unaffiliated list netfilter: nft_exthdr: check for IPv6 packet before further processing netfilter: nft_osf: check for TCP packet before further processing netfilter: nft_tproxy: restrict support to TCP and UDP transport protocols RDMA/rxe: Fix qp reference counting for atomic ops samples/bpf: Fix the error return code of xdp_redirect's main() net: ethernet: aeroflex: fix UAF in greth_of_remove net: ethernet: ezchip: fix UAF in nps_enet_remove net: ethernet: ezchip: fix error handling pkt_sched: sch_qfq: fix qfq_change_class() error path vxlan: add missing rcu_read_lock() in neigh_reduce() net/ipv4: swap flow ports when validating source ieee802154: hwsim: Fix memory leak in hwsim_add_one ieee802154: hwsim: avoid possible crash in hwsim_del_edge_nl() mac80211: remove iwlwifi specific workaround NDPs of null_response net: bcmgenet: Fix attaching to PYH failed on RPi 4B ipv6: exthdrs: do not blindly use init_net bpf: Do not change gso_size during bpf_skb_change_proto() i40e: Fix error handling in i40e_vsi_open i40e: Fix autoneg disabling for non-10GBaseT links Revert "ibmvnic: remove duplicate napi_schedule call in open function" ibmvnic: free tx_pool if tso_pool alloc fails ipv6: fix out-of-bound access in ip6_parse_tlv() Bluetooth: mgmt: Fix slab-out-of-bounds in tlv_data_is_valid Bluetooth: Fix handling of HCI_LE_Advertising_Set_Terminated event writeback: fix obtain a reference to a freeing memcg css net: lwtunnel: handle MTU calculation in forwading net: sched: fix warning in tcindex_alloc_perfect_hash RDMA/mlx5: Don't access NULL-cleared mpi pointer tty: nozomi: Fix a resource leak in an error handling function mwifiex: re-fix for unaligned accesses iio: adis_buffer: do not return ints in irq handlers iio: accel: bma180: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: accel: bma220: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: accel: hid: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: accel: kxcjk-1013: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: accel: stk8312: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: accel: stk8ba50: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: adc: ti-ads1015: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: adc: vf610: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: gyro: bmg160: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: humidity: am2315: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: prox: srf08: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: prox: pulsed-light: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: prox: as3935: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: light: isl29125: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: light: tcs3414: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: light: tcs3472: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: potentiostat: lmp91000: Fix alignment of buffer in iio_push_to_buffers_with_timestamp() ASoC: hisilicon: fix missing clk_disable_unprepare() on error in hi6210_i2s_startup() ASoC: rsnd: tidyup loop on rsnd_adg_clk_query() Input: hil_kbd - fix error return code in hil_dev_connect() char: pcmcia: error out if 'num_bytes_read' is greater than 4 in set_protocol() tty: nozomi: Fix the error handling path of 'nozomi_card_init()' scsi: FlashPoint: Rename si_flags field fsi: core: Fix return of error values on failures fsi: scom: Reset the FSI2PIB engine for any error fsi/sbefifo: Clean up correct FIFO when receiving reset request from SBE fsi/sbefifo: Fix reset timeout visorbus: fix error return code in visorchipset_init() s390: appldata depends on PROC_SYSCTL eeprom: idt_89hpesx: Put fwnode in matching case during ->probe() eeprom: idt_89hpesx: Restore printing the unsupported fwnode name iio: adc: hx711: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: adc: mxs-lradc: Fix buffer alignment in iio_push_to_buffers_with_timestamp() iio: adc: ti-ads8688: Fix alignment of buffer in iio_push_to_buffers_with_timestamp() staging: gdm724x: check for buffer overflow in gdm_lte_multi_sdu_pkt() staging: gdm724x: check for overflow in gdm_lte_netif_rx() staging: mt7621-dts: fix pci address for PCI memory range serial: 8250: Actually allow UPF_MAGIC_MULTIPLIER baud rates iio: prox: isl29501: Fix buffer alignment in iio_push_to_buffers_with_timestamp() ASoC: cs42l42: Correct definition of CS42L42_ADC_PDN_MASK of: Fix truncation of memory sizes on 32-bit platforms mtd: rawnand: marvell: add missing clk_disable_unprepare() on error in marvell_nfc_resume() scsi: mpt3sas: Fix error return value in _scsih_expander_add() phy: ti: dm816x: Fix the error handling path in 'dm816x_usb_phy_probe() extcon: sm5502: Drop invalid register write in sm5502_reg_data extcon: max8997: Add missing modalias string ASoC: atmel-i2s: Fix usage of capture and playback at the same time configfs: fix memleak in configfs_release_bin_file leds: as3645a: Fix error return code in as3645a_parse_node() leds: ktd2692: Fix an error handling path powerpc: Offline CPU in stop_this_cpu() serial: mvebu-uart: correctly calculate minimal possible baudrate arm64: dts: marvell: armada-37xx: Fix reg for standard variant of UART vfio/pci: Handle concurrent vma faults mm/huge_memory.c: don't discard hugepage if other processes are mapping it selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random perf llvm: Return -ENOMEM when asprintf() fails mmc: block: Disable CMDQ on the ioctl path mmc: vub3000: fix control-request direction drm/mxsfb: Don't select DRM_KMS_FB_HELPER drm/zte: Don't select DRM_KMS_FB_HELPER drm/amd/amdgpu/sriov disable all ip hw status by default net: pch_gbe: Use proper accessors to BE data in pch_ptp_match() drm/amd/display: fix use_max_lb flag for 420 pixel formats hugetlb: clear huge pte during flush function on mips platform atm: iphase: fix possible use-after-free in ia_module_exit() mISDN: fix possible use-after-free in HFC_cleanup() atm: nicstar: Fix possible use-after-free in nicstar_cleanup() net: Treat __napi_schedule_irqoff() as __napi_schedule() on PREEMPT_RT reiserfs: add check for invalid 1st journal block drm/virtio: Fix double free on probe failure udf: Fix NULL pointer dereference in udf_symlink function e100: handle eeprom as little endian clk: renesas: r8a77995: Add ZA2 clock clk: tegra: Ensure that PLLU configuration is applied properly ipv6: use prandom_u32() for ID generation RDMA/cxgb4: Fix missing error code in create_qp() dm space maps: don't reset space map allocation cursor when committing pinctrl: mcp23s08: fix race condition in irq handler ice: set the value of global config lock timeout longer virtio_net: Remove BUG() to avoid machine dead net: bcmgenet: check return value after calling platform_get_resource() net: mvpp2: check return value after calling platform_get_resource() net: micrel: check return value after calling platform_get_resource() fjes: check return value after calling platform_get_resource() selinux: use __GFP_NOWARN with GFP_NOWAIT in the AVC xfrm: Fix error reporting in xfrm_state_construct. wlcore/wl12xx: Fix wl12xx get_mac error if device is in ELP wl1251: Fix possible buffer overflow in wl1251_cmd_scan cw1200: add missing MODULE_DEVICE_TABLE net: fix mistake path for netdev_features_strings rtl8xxxu: Fix device info for RTL8192EU devices MIPS: add PMD table accounting into MIPS'pmd_alloc_one atm: nicstar: use 'dma_free_coherent' instead of 'kfree' atm: nicstar: register the interrupt handler in the right place vsock: notify server to shutdown when client has pending signal RDMA/rxe: Don't overwrite errno from ib_umem_get() iwlwifi: mvm: don't change band on bound PHY contexts iwlwifi: pcie: free IML DMA memory allocation sfc: avoid double pci_remove of VFs sfc: error code if SRIOV cannot be disabled wireless: wext-spy: Fix out-of-bounds warning media, bpf: Do not copy more entries than user space requested net: ip: avoid OOM kills with large UDP sends over loopback RDMA/cma: Fix rdma_resolve_route() memory leak Bluetooth: Fix the HCI to MGMT status conversion table Bluetooth: Shutdown controller after workqueues are flushed or cancelled Bluetooth: btusb: fix bt fiwmare downloading failure issue for qca btsoc. sctp: validate from_addr_param return sctp: add size validation when walking chunks MIPS: set mips32r5 for virt extensions fscrypt: don't ignore minor_hash when hash is 0 bdi: Do not use freezable workqueue serial: mvebu-uart: clarify the baud rate derivation serial: mvebu-uart: fix calculation of clock divisor fuse: reject internal errno powerpc/barrier: Avoid collision with clang's __lwsync macro usb: gadget: f_fs: Fix setting of device and driver data cross-references drm/radeon: Add the missed drm_gem_object_put() in radeon_user_framebuffer_create() drm/amd/display: fix incorrrect valid irq check pinctrl/amd: Add device HID for new AMD GPIO controller drm/msm/mdp4: Fix modifier support enabling mmc: sdhci: Fix warning message when accessing RPMB in HS400 mode mmc: core: clear flags before allowing to retune mmc: core: Allow UHS-I voltage switch for SDSC cards if supported ata: ahci_sunxi: Disable DIPM cpu/hotplug: Cure the cpusets trainwreck clocksource/arm_arch_timer: Improve Allwinner A64 timer workaround ASoC: tegra: Set driver_name=tegra for all machine drivers qemu_fw_cfg: Make fw_cfg_rev_attr a proper kobj_attribute ipmi/watchdog: Stop watchdog timer when the current action is 'none' power: supply: ab8500: Fix an old bug seq_buf: Fix overflow in seq_buf_putmem_hex() tracing: Simplify & fix saved_tgids logic tracing: Resize tgid_map to pid_max, not PID_MAX_DEFAULT ipack/carriers/tpci200: Fix a double free in tpci200_pci_probe coresight: tmc-etf: Fix global-out-of-bounds in tmc_update_etf_buffer() dm btree remove: assign new_root only when removal succeeds PCI: Leave Apple Thunderbolt controllers on for s2idle or standby PCI: aardvark: Fix checking for PIO Non-posted Request media: subdev: disallow ioctl for saa6588/davinci media: dtv5100: fix control-request directions media: zr364xx: fix memory leak in zr364xx_start_readpipe media: gspca/sq905: fix control-request direction media: gspca/sunplus: fix zero-length control requests media: uvcvideo: Fix pixel format change for Elgato Cam Link 4K pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq() jfs: fix GPF in diFree smackfs: restrict bytes count in smk_set_cipso() KVM: x86: Use guest MAXPHYADDR from CPUID.0x8000_0008 iff TDP is enabled KVM: X86: Disable hardware breakpoints unconditionally before kvm_x86->run() scsi: core: Fix bad pointer dereference when ehandler kthread is invalid tracing: Do not reference char * as a string in histograms PCI: aardvark: Don't rely on jiffies while holding spinlock PCI: aardvark: Fix kernel panic during PIO transfer tty: serial: fsl_lpuart: fix the potential risk of division or modulo by zero misc/libmasm/module: Fix two use after free in ibmasm_init_one Revert "ALSA: bebob/oxfw: fix Kconfig entry for Mackie d.2 Pro" w1: ds2438: fixing bug that would always get page0 scsi: lpfc: Fix "Unexpected timeout" error in direct attach topology scsi: lpfc: Fix crash when lpfc_sli4_hba_setup() fails to initialize the SGLs scsi: core: Cap scsi_host cmd_per_lun at can_queue ALSA: ac97: fix PM reference leak in ac97_bus_remove() tty: serial: 8250: serial_cs: Fix a memory leak in error handling path scsi: scsi_dh_alua: Check for negative result value fs/jfs: Fix missing error code in lmLogInit() scsi: iscsi: Add iscsi_cls_conn refcount helpers scsi: iscsi: Fix conn use after free during resets scsi: iscsi: Fix shost->max_id use scsi: qedi: Fix null ref during abort handling mfd: da9052/stmpe: Add and modify MODULE_DEVICE_TABLE s390/sclp_vt220: fix console name to match device selftests: timers: rtcpie: skip test if default RTC device does not exist ALSA: sb: Fix potential double-free of CSP mixer elements powerpc/ps3: Add dma_mask to ps3_dma_region gpio: zynq: Check return value of pm_runtime_get_sync ALSA: ppc: fix error return code in snd_pmac_probe() selftests/powerpc: Fix "no_handler" EBB selftest gpio: pca953x: Add support for the On Semi pca9655 ASoC: soc-core: Fix the error return code in snd_soc_of_parse_audio_routing() Input: hideep - fix the uninitialized use in hideep_nvm_unlock() ALSA: bebob: add support for ToneWeal FW66 usb: gadget: f_hid: fix endianness issue with descriptors usb: gadget: hid: fix error return code in hid_bind() powerpc/boot: Fixup device-tree on little endian backlight: lm3630a: Fix return code of .update_status() callback ALSA: hda: Add IRQ check for platform_get_irq() staging: rtl8723bs: fix macro value for 2.4Ghz only device intel_th: Wait until port is in reset before programming it i2c: core: Disable client irq on reboot/shutdown lib/decompress_unlz4.c: correctly handle zero-padding around initrds. pwm: spear: Don't modify HW state in .remove callback power: supply: ab8500: Avoid NULL pointers power: supply: max17042: Do not enforce (incorrect) interrupt trigger type power: reset: gpio-poweroff: add missing MODULE_DEVICE_TABLE ARM: 9087/1: kprobes: test-thumb: fix for LLVM_IAS=1 watchdog: Fix possible use-after-free in wdt_startup() watchdog: sc520_wdt: Fix possible use-after-free in wdt_turnoff() watchdog: Fix possible use-after-free by calling del_timer_sync() watchdog: iTCO_wdt: Account for rebooting on second timeout x86/fpu: Return proper error codes from user access functions PCI: tegra: Add missing MODULE_DEVICE_TABLE orangefs: fix orangefs df output. ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty NFS: nfs_find_open_context() may only select open files power: supply: charger-manager: add missing MODULE_DEVICE_TABLE power: supply: ab8500: add missing MODULE_DEVICE_TABLE pwm: tegra: Don't modify HW state in .remove callback ACPI: AMBA: Fix resource name in /proc/iomem ACPI: video: Add quirk for the Dell Vostro 3350 virtio-blk: Fix memory leak among suspend/resume procedure virtio_net: Fix error handling in virtnet_restore() virtio_console: Assure used length from device is limited f2fs: add MODULE_SOFTDEP to ensure crc32 is included in the initramfs PCI/sysfs: Fix dsm_label_utf16s_to_utf8s() buffer overrun power: supply: rt5033_battery: Fix device tree enumeration NFSv4: Initialise connection to the server in nfs4_alloc_client() um: fix error return code in slip_open() um: fix error return code in winch_tramp() watchdog: aspeed: fix hardware timeout calculation nfs: fix acl memory leak of posix_acl_create() ubifs: Set/Clear I_LINKABLE under i_lock for whiteout inode PCI: iproc: Fix multi-MSI base vector number allocation PCI: iproc: Support multi-MSI only on uniprocessor kernel x86/fpu: Limit xstate copy size in xstateregs_set() virtio_net: move tx vq operation under tx queue lock ALSA: isa: Fix error return code in snd_cmi8330_probe() NFSv4/pNFS: Don't call _nfs4_pnfs_v3_ds_connect multiple times hexagon: use common DISCARDS macro reset: a10sr: add missing of_match_table reference ARM: dts: exynos: fix PWM LED max brightness on Odroid XU/XU3 ARM: dts: exynos: fix PWM LED max brightness on Odroid HC1 ARM: dts: exynos: fix PWM LED max brightness on Odroid XU4 memory: atmel-ebi: add missing of_node_put for loop iteration rtc: fix snprintf() checking in is_rtc_hctosys() arm64: dts: renesas: v3msk: Fix memory size ARM: dts: r8a7779, marzen: Fix DU clock names ARM: dts: BCM5301X: Fixup SPI binding reset: bail if try_module_get() fails memory: fsl_ifc: fix leak of IO mapping on probe failure memory: fsl_ifc: fix leak of private memory on probe failure ARM: dts: am335x: align ti,pindir-d0-out-d1-in property with dt-shema ARM: dts: am437x: align ti,pindir-d0-out-d1-in property with dt-shema ARM: dts: imx6q-dhcom: Fix ethernet reset time properties ARM: dts: imx6q-dhcom: Fix ethernet plugin detection problems ARM: dts: imx6q-dhcom: Add gpios pinctrl for i2c bus recovery scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe() mips: always link byteswap helpers into decompressor mips: disable branch profiling in boot/decompress.o MIPS: vdso: Invalid GIC access through VDSO net: bridge: multicast: fix PIM hello router port marking race scsi: scsi_dh_alua: Fix signedness bug in alua_rtpg() seq_file: disallow extremely large seq buffer allocations Linux 4.19.198 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: Iaa8a95c4d30ca85021bae6c60b4818038797e04e
1455 lines
35 KiB
C
1455 lines
35 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Functions for working with the Flattened Device Tree data format
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*
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* Copyright 2009 Benjamin Herrenschmidt, IBM Corp
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* benh@kernel.crashing.org
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*/
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#define pr_fmt(fmt) "OF: fdt: " fmt
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#include <linux/crc32.h>
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#include <linux/kernel.h>
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#include <linux/initrd.h>
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#include <linux/bootmem.h>
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#include <linux/memblock.h>
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#include <linux/mutex.h>
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#include <linux/of.h>
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#include <linux/of_fdt.h>
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#include <linux/of_reserved_mem.h>
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#include <linux/sizes.h>
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#include <linux/string.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/libfdt.h>
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#include <linux/debugfs.h>
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#include <linux/serial_core.h>
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#include <linux/sysfs.h>
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#include <linux/random.h>
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#include <asm/setup.h> /* for COMMAND_LINE_SIZE */
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#include <asm/page.h>
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#include "of_private.h"
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/*
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* of_fdt_limit_memory - limit the number of regions in the /memory node
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* @limit: maximum entries
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*
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* Adjust the flattened device tree to have at most 'limit' number of
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* memory entries in the /memory node. This function may be called
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* any time after initial_boot_param is set.
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*/
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void of_fdt_limit_memory(int limit)
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{
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int memory;
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int len;
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const void *val;
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int nr_address_cells = OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
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int nr_size_cells = OF_ROOT_NODE_SIZE_CELLS_DEFAULT;
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const __be32 *addr_prop;
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const __be32 *size_prop;
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int root_offset;
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int cell_size;
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root_offset = fdt_path_offset(initial_boot_params, "/");
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if (root_offset < 0)
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return;
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addr_prop = fdt_getprop(initial_boot_params, root_offset,
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"#address-cells", NULL);
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if (addr_prop)
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nr_address_cells = fdt32_to_cpu(*addr_prop);
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size_prop = fdt_getprop(initial_boot_params, root_offset,
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"#size-cells", NULL);
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if (size_prop)
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nr_size_cells = fdt32_to_cpu(*size_prop);
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cell_size = sizeof(uint32_t)*(nr_address_cells + nr_size_cells);
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memory = fdt_path_offset(initial_boot_params, "/memory");
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if (memory > 0) {
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val = fdt_getprop(initial_boot_params, memory, "reg", &len);
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if (len > limit*cell_size) {
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len = limit*cell_size;
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pr_debug("Limiting number of entries to %d\n", limit);
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fdt_setprop(initial_boot_params, memory, "reg", val,
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len);
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}
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}
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}
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/**
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* of_fdt_get_ddrhbb - Return the highest bank bit of ddr on the current device
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*
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* On match, returns a non-zero positive value which matches the highest bank
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* bit.
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* Otherwise returns -ENOENT.
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*/
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int of_fdt_get_ddrhbb(int channel, int rank)
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{
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int memory;
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int len;
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int ret;
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/* Single spaces reserved for channel(0-9), rank(0-9) */
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char pname[] = "ddr_device_hbb_ch _rank ";
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fdt32_t *prop = NULL;
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memory = fdt_path_offset(initial_boot_params, "/memory");
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if (memory > 0) {
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snprintf(pname, sizeof(pname),
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"ddr_device_hbb_ch%d_rank%d", channel, rank);
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prop = fdt_getprop_w(initial_boot_params, memory,
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pname, &len);
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}
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if (!prop || len != sizeof(u32))
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return -ENOENT;
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ret = fdt32_to_cpu(*prop);
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return ret;
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}
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EXPORT_SYMBOL_GPL(of_fdt_get_ddrhbb);
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/**
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* of_fdt_get_ddrrank - Return the rank of ddr on the current device
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*
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* On match, returns a non-zero positive value which matches the ddr rank.
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* Otherwise returns -ENOENT.
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*/
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int of_fdt_get_ddrrank(int channel)
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{
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int memory;
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int len;
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int ret;
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/* Single space reserved for channel(0-9) */
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char pname[] = "ddr_device_rank_ch ";
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fdt32_t *prop = NULL;
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memory = fdt_path_offset(initial_boot_params, "/memory");
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if (memory > 0) {
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snprintf(pname, sizeof(pname),
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"ddr_device_rank_ch%d", channel);
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prop = fdt_getprop_w(initial_boot_params, memory,
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pname, &len);
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}
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if (!prop || len != sizeof(u32))
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return -ENOENT;
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ret = fdt32_to_cpu(*prop);
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return ret;
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}
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EXPORT_SYMBOL_GPL(of_fdt_get_ddrrank);
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/**
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* of_fdt_get_ddrtype - Return the type of ddr (4/5) on the current device
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*
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* On match, returns a non-zero positive value which matches the ddr type.
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* Otherwise returns -ENOENT.
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*/
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int of_fdt_get_ddrtype(void)
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{
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int memory;
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int len;
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int ret;
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fdt32_t *prop = NULL;
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memory = fdt_path_offset(initial_boot_params, "/memory");
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if (memory > 0)
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prop = fdt_getprop_w(initial_boot_params, memory,
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"ddr_device_type", &len);
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if (!prop || len != sizeof(u32))
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return -ENOENT;
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ret = fdt32_to_cpu(*prop);
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return ret;
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}
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EXPORT_SYMBOL_GPL(of_fdt_get_ddrtype);
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/**
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* of_fdt_is_compatible - Return true if given node from the given blob has
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* compat in its compatible list
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* @blob: A device tree blob
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* @node: node to test
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* @compat: compatible string to compare with compatible list.
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*
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* On match, returns a non-zero value with smaller values returned for more
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* specific compatible values.
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*/
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static int of_fdt_is_compatible(const void *blob,
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unsigned long node, const char *compat)
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{
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const char *cp;
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int cplen;
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unsigned long l, score = 0;
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cp = fdt_getprop(blob, node, "compatible", &cplen);
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if (cp == NULL)
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return 0;
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while (cplen > 0) {
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score++;
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if (of_compat_cmp(cp, compat, strlen(compat)) == 0)
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return score;
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l = strlen(cp) + 1;
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cp += l;
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cplen -= l;
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}
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return 0;
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}
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/**
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* of_fdt_is_big_endian - Return true if given node needs BE MMIO accesses
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* @blob: A device tree blob
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* @node: node to test
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*
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* Returns true if the node has a "big-endian" property, or if the kernel
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* was compiled for BE *and* the node has a "native-endian" property.
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* Returns false otherwise.
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*/
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bool of_fdt_is_big_endian(const void *blob, unsigned long node)
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{
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if (fdt_getprop(blob, node, "big-endian", NULL))
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return true;
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if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) &&
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fdt_getprop(blob, node, "native-endian", NULL))
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return true;
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return false;
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}
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static bool of_fdt_device_is_available(const void *blob, unsigned long node)
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{
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const char *status = fdt_getprop(blob, node, "status", NULL);
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if (!status)
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return true;
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if (!strcmp(status, "ok") || !strcmp(status, "okay"))
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return true;
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return false;
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}
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/**
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* of_fdt_match - Return true if node matches a list of compatible values
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*/
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int of_fdt_match(const void *blob, unsigned long node,
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const char *const *compat)
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{
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unsigned int tmp, score = 0;
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if (!compat)
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return 0;
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while (*compat) {
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tmp = of_fdt_is_compatible(blob, node, *compat);
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if (tmp && (score == 0 || (tmp < score)))
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score = tmp;
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compat++;
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}
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return score;
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}
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static void *unflatten_dt_alloc(void **mem, unsigned long size,
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unsigned long align)
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{
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void *res;
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*mem = PTR_ALIGN(*mem, align);
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res = *mem;
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*mem += size;
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return res;
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}
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static void populate_properties(const void *blob,
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int offset,
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void **mem,
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struct device_node *np,
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const char *nodename,
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bool dryrun)
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{
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struct property *pp, **pprev = NULL;
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int cur;
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bool has_name = false;
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pprev = &np->properties;
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for (cur = fdt_first_property_offset(blob, offset);
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cur >= 0;
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cur = fdt_next_property_offset(blob, cur)) {
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const __be32 *val;
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const char *pname;
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u32 sz;
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val = fdt_getprop_by_offset(blob, cur, &pname, &sz);
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if (!val) {
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pr_warn("Cannot locate property at 0x%x\n", cur);
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continue;
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}
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if (!pname) {
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pr_warn("Cannot find property name at 0x%x\n", cur);
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continue;
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}
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if (!strcmp(pname, "name"))
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has_name = true;
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pp = unflatten_dt_alloc(mem, sizeof(struct property),
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__alignof__(struct property));
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if (dryrun)
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continue;
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/* We accept flattened tree phandles either in
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* ePAPR-style "phandle" properties, or the
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* legacy "linux,phandle" properties. If both
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* appear and have different values, things
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* will get weird. Don't do that.
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*/
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if (!strcmp(pname, "phandle") ||
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!strcmp(pname, "linux,phandle")) {
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if (!np->phandle)
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np->phandle = be32_to_cpup(val);
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}
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/* And we process the "ibm,phandle" property
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* used in pSeries dynamic device tree
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* stuff
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*/
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if (!strcmp(pname, "ibm,phandle"))
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np->phandle = be32_to_cpup(val);
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pp->name = (char *)pname;
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pp->length = sz;
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pp->value = (__be32 *)val;
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*pprev = pp;
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pprev = &pp->next;
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}
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/* With version 0x10 we may not have the name property,
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* recreate it here from the unit name if absent
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*/
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if (!has_name) {
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const char *p = nodename, *ps = p, *pa = NULL;
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int len;
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while (*p) {
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if ((*p) == '@')
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pa = p;
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else if ((*p) == '/')
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ps = p + 1;
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p++;
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}
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if (pa < ps)
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pa = p;
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len = (pa - ps) + 1;
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pp = unflatten_dt_alloc(mem, sizeof(struct property) + len,
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__alignof__(struct property));
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if (!dryrun) {
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pp->name = "name";
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pp->length = len;
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pp->value = pp + 1;
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*pprev = pp;
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pprev = &pp->next;
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memcpy(pp->value, ps, len - 1);
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((char *)pp->value)[len - 1] = 0;
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pr_debug("fixed up name for %s -> %s\n",
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nodename, (char *)pp->value);
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}
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}
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if (!dryrun)
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*pprev = NULL;
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}
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static bool populate_node(const void *blob,
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int offset,
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void **mem,
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struct device_node *dad,
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struct device_node **pnp,
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bool dryrun)
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{
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struct device_node *np;
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const char *pathp;
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unsigned int l, allocl;
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pathp = fdt_get_name(blob, offset, &l);
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if (!pathp) {
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*pnp = NULL;
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return false;
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}
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allocl = ++l;
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np = unflatten_dt_alloc(mem, sizeof(struct device_node) + allocl,
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__alignof__(struct device_node));
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if (!dryrun) {
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char *fn;
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of_node_init(np);
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np->full_name = fn = ((char *)np) + sizeof(*np);
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memcpy(fn, pathp, l);
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if (dad != NULL) {
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np->parent = dad;
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np->sibling = dad->child;
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dad->child = np;
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}
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}
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populate_properties(blob, offset, mem, np, pathp, dryrun);
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if (!dryrun) {
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np->name = of_get_property(np, "name", NULL);
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np->type = of_get_property(np, "device_type", NULL);
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if (!np->name)
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np->name = "<NULL>";
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if (!np->type)
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np->type = "<NULL>";
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}
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*pnp = np;
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return true;
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}
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static void reverse_nodes(struct device_node *parent)
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{
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struct device_node *child, *next;
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/* In-depth first */
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child = parent->child;
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while (child) {
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reverse_nodes(child);
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child = child->sibling;
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}
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|
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/* Reverse the nodes in the child list */
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child = parent->child;
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parent->child = NULL;
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while (child) {
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next = child->sibling;
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child->sibling = parent->child;
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parent->child = child;
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child = next;
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}
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}
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|
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/**
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* unflatten_dt_nodes - Alloc and populate a device_node from the flat tree
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* @blob: The parent device tree blob
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* @mem: Memory chunk to use for allocating device nodes and properties
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* @dad: Parent struct device_node
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* @nodepp: The device_node tree created by the call
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*
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* It returns the size of unflattened device tree or error code
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*/
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static int unflatten_dt_nodes(const void *blob,
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void *mem,
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struct device_node *dad,
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struct device_node **nodepp)
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|
{
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struct device_node *root;
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int offset = 0, depth = 0, initial_depth = 0;
|
|
#define FDT_MAX_DEPTH 64
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struct device_node *nps[FDT_MAX_DEPTH];
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void *base = mem;
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bool dryrun = !base;
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|
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if (nodepp)
|
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*nodepp = NULL;
|
|
|
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/*
|
|
* We're unflattening device sub-tree if @dad is valid. There are
|
|
* possibly multiple nodes in the first level of depth. We need
|
|
* set @depth to 1 to make fdt_next_node() happy as it bails
|
|
* immediately when negative @depth is found. Otherwise, the device
|
|
* nodes except the first one won't be unflattened successfully.
|
|
*/
|
|
if (dad)
|
|
depth = initial_depth = 1;
|
|
|
|
root = dad;
|
|
nps[depth] = dad;
|
|
|
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for (offset = 0;
|
|
offset >= 0 && depth >= initial_depth;
|
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offset = fdt_next_node(blob, offset, &depth)) {
|
|
if (WARN_ON_ONCE(depth >= FDT_MAX_DEPTH))
|
|
continue;
|
|
|
|
if (!IS_ENABLED(CONFIG_OF_KOBJ) &&
|
|
!of_fdt_device_is_available(blob, offset))
|
|
continue;
|
|
|
|
if (!populate_node(blob, offset, &mem, nps[depth],
|
|
&nps[depth+1], dryrun))
|
|
return mem - base;
|
|
|
|
if (!dryrun && nodepp && !*nodepp)
|
|
*nodepp = nps[depth+1];
|
|
if (!dryrun && !root)
|
|
root = nps[depth+1];
|
|
}
|
|
|
|
if (offset < 0 && offset != -FDT_ERR_NOTFOUND) {
|
|
pr_err("Error %d processing FDT\n", offset);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Reverse the child list. Some drivers assumes node order matches .dts
|
|
* node order
|
|
*/
|
|
if (!dryrun)
|
|
reverse_nodes(root);
|
|
|
|
return mem - base;
|
|
}
|
|
|
|
/**
|
|
* __unflatten_device_tree - create tree of device_nodes from flat blob
|
|
*
|
|
* unflattens a device-tree, creating the
|
|
* tree of struct device_node. It also fills the "name" and "type"
|
|
* pointers of the nodes so the normal device-tree walking functions
|
|
* can be used.
|
|
* @blob: The blob to expand
|
|
* @dad: Parent device node
|
|
* @mynodes: The device_node tree created by the call
|
|
* @dt_alloc: An allocator that provides a virtual address to memory
|
|
* for the resulting tree
|
|
* @detached: if true set OF_DETACHED on @mynodes
|
|
*
|
|
* Returns NULL on failure or the memory chunk containing the unflattened
|
|
* device tree on success.
|
|
*/
|
|
void *__unflatten_device_tree(const void *blob,
|
|
struct device_node *dad,
|
|
struct device_node **mynodes,
|
|
void *(*dt_alloc)(u64 size, u64 align),
|
|
bool detached)
|
|
{
|
|
int size;
|
|
void *mem;
|
|
|
|
pr_debug(" -> unflatten_device_tree()\n");
|
|
|
|
if (!blob) {
|
|
pr_debug("No device tree pointer\n");
|
|
return NULL;
|
|
}
|
|
|
|
pr_debug("Unflattening device tree:\n");
|
|
pr_debug("magic: %08x\n", fdt_magic(blob));
|
|
pr_debug("size: %08x\n", fdt_totalsize(blob));
|
|
pr_debug("version: %08x\n", fdt_version(blob));
|
|
|
|
if (fdt_check_header(blob)) {
|
|
pr_err("Invalid device tree blob header\n");
|
|
return NULL;
|
|
}
|
|
|
|
/* First pass, scan for size */
|
|
size = unflatten_dt_nodes(blob, NULL, dad, NULL);
|
|
if (size < 0)
|
|
return NULL;
|
|
|
|
size = ALIGN(size, 4);
|
|
pr_debug(" size is %d, allocating...\n", size);
|
|
|
|
/* Allocate memory for the expanded device tree */
|
|
mem = dt_alloc(size + 4, __alignof__(struct device_node));
|
|
if (!mem)
|
|
return NULL;
|
|
|
|
memset(mem, 0, size);
|
|
|
|
*(__be32 *)(mem + size) = cpu_to_be32(0xdeadbeef);
|
|
|
|
pr_debug(" unflattening %p...\n", mem);
|
|
|
|
/* Second pass, do actual unflattening */
|
|
unflatten_dt_nodes(blob, mem, dad, mynodes);
|
|
if (be32_to_cpup(mem + size) != 0xdeadbeef)
|
|
pr_warning("End of tree marker overwritten: %08x\n",
|
|
be32_to_cpup(mem + size));
|
|
|
|
if (detached && mynodes) {
|
|
of_node_set_flag(*mynodes, OF_DETACHED);
|
|
pr_debug("unflattened tree is detached\n");
|
|
}
|
|
|
|
pr_debug(" <- unflatten_device_tree()\n");
|
|
return mem;
|
|
}
|
|
|
|
static void *kernel_tree_alloc(u64 size, u64 align)
|
|
{
|
|
return kzalloc(size, GFP_KERNEL);
|
|
}
|
|
|
|
static DEFINE_MUTEX(of_fdt_unflatten_mutex);
|
|
|
|
/**
|
|
* of_fdt_unflatten_tree - create tree of device_nodes from flat blob
|
|
* @blob: Flat device tree blob
|
|
* @dad: Parent device node
|
|
* @mynodes: The device tree created by the call
|
|
*
|
|
* unflattens the device-tree passed by the firmware, creating the
|
|
* tree of struct device_node. It also fills the "name" and "type"
|
|
* pointers of the nodes so the normal device-tree walking functions
|
|
* can be used.
|
|
*
|
|
* Returns NULL on failure or the memory chunk containing the unflattened
|
|
* device tree on success.
|
|
*/
|
|
void *of_fdt_unflatten_tree(const unsigned long *blob,
|
|
struct device_node *dad,
|
|
struct device_node **mynodes)
|
|
{
|
|
void *mem;
|
|
|
|
mutex_lock(&of_fdt_unflatten_mutex);
|
|
mem = __unflatten_device_tree(blob, dad, mynodes, &kernel_tree_alloc,
|
|
true);
|
|
mutex_unlock(&of_fdt_unflatten_mutex);
|
|
|
|
return mem;
|
|
}
|
|
EXPORT_SYMBOL_GPL(of_fdt_unflatten_tree);
|
|
|
|
/* Everything below here references initial_boot_params directly. */
|
|
int __initdata dt_root_addr_cells;
|
|
int __initdata dt_root_size_cells;
|
|
|
|
void *initial_boot_params;
|
|
|
|
#ifdef CONFIG_OF_EARLY_FLATTREE
|
|
|
|
static u32 of_fdt_crc32;
|
|
|
|
/**
|
|
* res_mem_reserve_reg() - reserve all memory described in 'reg' property
|
|
*/
|
|
static int __init __reserved_mem_reserve_reg(unsigned long node,
|
|
const char *uname)
|
|
{
|
|
int t_len = (dt_root_addr_cells + dt_root_size_cells) * sizeof(__be32);
|
|
phys_addr_t base, size;
|
|
int len;
|
|
const __be32 *prop;
|
|
int nomap, first = 1;
|
|
|
|
prop = of_get_flat_dt_prop(node, "reg", &len);
|
|
if (!prop)
|
|
return -ENOENT;
|
|
|
|
if (len && len % t_len != 0) {
|
|
pr_err("Reserved memory: invalid reg property in '%s', skipping node.\n",
|
|
uname);
|
|
return -EINVAL;
|
|
}
|
|
|
|
nomap = of_get_flat_dt_prop(node, "no-map", NULL) != NULL;
|
|
|
|
while (len >= t_len) {
|
|
base = dt_mem_next_cell(dt_root_addr_cells, &prop);
|
|
size = dt_mem_next_cell(dt_root_size_cells, &prop);
|
|
|
|
if (size &&
|
|
early_init_dt_reserve_memory_arch(base, size, nomap) == 0)
|
|
pr_debug("Reserved memory: reserved region for node '%s': base %pa, size %lu MiB\n",
|
|
uname, &base, (unsigned long)(size / SZ_1M));
|
|
else
|
|
pr_info("Reserved memory: failed to reserve memory for node '%s': base %pa, size %lu MiB\n",
|
|
uname, &base, (unsigned long)(size / SZ_1M));
|
|
|
|
len -= t_len;
|
|
if (first) {
|
|
fdt_reserved_mem_save_node(node, uname, base, size);
|
|
first = 0;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* __reserved_mem_check_root() - check if #size-cells, #address-cells provided
|
|
* in /reserved-memory matches the values supported by the current implementation,
|
|
* also check if ranges property has been provided
|
|
*/
|
|
static int __init __reserved_mem_check_root(unsigned long node)
|
|
{
|
|
const __be32 *prop;
|
|
|
|
prop = of_get_flat_dt_prop(node, "#size-cells", NULL);
|
|
if (!prop || be32_to_cpup(prop) != dt_root_size_cells)
|
|
return -EINVAL;
|
|
|
|
prop = of_get_flat_dt_prop(node, "#address-cells", NULL);
|
|
if (!prop || be32_to_cpup(prop) != dt_root_addr_cells)
|
|
return -EINVAL;
|
|
|
|
prop = of_get_flat_dt_prop(node, "ranges", NULL);
|
|
if (!prop)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* fdt_scan_reserved_mem() - scan a single FDT node for reserved memory
|
|
*/
|
|
static int __init __fdt_scan_reserved_mem(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
static int found;
|
|
int err;
|
|
|
|
if (!found && depth == 1 && strcmp(uname, "reserved-memory") == 0) {
|
|
if (__reserved_mem_check_root(node) != 0) {
|
|
pr_err("Reserved memory: unsupported node format, ignoring\n");
|
|
/* break scan */
|
|
return 1;
|
|
}
|
|
found = 1;
|
|
/* scan next node */
|
|
return 0;
|
|
} else if (!found) {
|
|
/* scan next node */
|
|
return 0;
|
|
} else if (found && depth < 2) {
|
|
/* scanning of /reserved-memory has been finished */
|
|
return 1;
|
|
}
|
|
|
|
if (!of_fdt_device_is_available(initial_boot_params, node))
|
|
return 0;
|
|
|
|
err = __reserved_mem_reserve_reg(node, uname);
|
|
if (err == -ENOENT && of_get_flat_dt_prop(node, "size", NULL))
|
|
fdt_reserved_mem_save_node(node, uname, 0, 0);
|
|
|
|
/* scan next node */
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* early_init_fdt_scan_reserved_mem() - create reserved memory regions
|
|
*
|
|
* This function grabs memory from early allocator for device exclusive use
|
|
* defined in device tree structures. It should be called by arch specific code
|
|
* once the early allocator (i.e. memblock) has been fully activated.
|
|
*/
|
|
void __init early_init_fdt_scan_reserved_mem(void)
|
|
{
|
|
int n;
|
|
u64 base, size;
|
|
|
|
if (!initial_boot_params)
|
|
return;
|
|
|
|
/* Process header /memreserve/ fields */
|
|
for (n = 0; ; n++) {
|
|
fdt_get_mem_rsv(initial_boot_params, n, &base, &size);
|
|
if (!size)
|
|
break;
|
|
early_init_dt_reserve_memory_arch(base, size, 0);
|
|
}
|
|
|
|
of_scan_flat_dt(__fdt_scan_reserved_mem, NULL);
|
|
fdt_init_reserved_mem();
|
|
}
|
|
|
|
/**
|
|
* early_init_fdt_reserve_self() - reserve the memory used by the FDT blob
|
|
*/
|
|
void __init early_init_fdt_reserve_self(void)
|
|
{
|
|
if (!initial_boot_params)
|
|
return;
|
|
|
|
/* Reserve the dtb region */
|
|
early_init_dt_reserve_memory_arch(__pa(initial_boot_params),
|
|
fdt_totalsize(initial_boot_params),
|
|
0);
|
|
}
|
|
|
|
/**
|
|
* of_scan_flat_dt - scan flattened tree blob and call callback on each.
|
|
* @it: callback function
|
|
* @data: context data pointer
|
|
*
|
|
* This function is used to scan the flattened device-tree, it is
|
|
* used to extract the memory information at boot before we can
|
|
* unflatten the tree
|
|
*/
|
|
int __init of_scan_flat_dt(int (*it)(unsigned long node,
|
|
const char *uname, int depth,
|
|
void *data),
|
|
void *data)
|
|
{
|
|
const void *blob = initial_boot_params;
|
|
const char *pathp;
|
|
int offset, rc = 0, depth = -1;
|
|
|
|
if (!blob)
|
|
return 0;
|
|
|
|
for (offset = fdt_next_node(blob, -1, &depth);
|
|
offset >= 0 && depth >= 0 && !rc;
|
|
offset = fdt_next_node(blob, offset, &depth)) {
|
|
|
|
pathp = fdt_get_name(blob, offset, NULL);
|
|
if (*pathp == '/')
|
|
pathp = kbasename(pathp);
|
|
rc = it(offset, pathp, depth, data);
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* of_scan_flat_dt_subnodes - scan sub-nodes of a node call callback on each.
|
|
* @it: callback function
|
|
* @data: context data pointer
|
|
*
|
|
* This function is used to scan sub-nodes of a node.
|
|
*/
|
|
int __init of_scan_flat_dt_subnodes(unsigned long parent,
|
|
int (*it)(unsigned long node,
|
|
const char *uname,
|
|
void *data),
|
|
void *data)
|
|
{
|
|
const void *blob = initial_boot_params;
|
|
int node;
|
|
|
|
fdt_for_each_subnode(node, blob, parent) {
|
|
const char *pathp;
|
|
int rc;
|
|
|
|
pathp = fdt_get_name(blob, node, NULL);
|
|
if (*pathp == '/')
|
|
pathp = kbasename(pathp);
|
|
rc = it(node, pathp, data);
|
|
if (rc)
|
|
return rc;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* of_get_flat_dt_subnode_by_name - get the subnode by given name
|
|
*
|
|
* @node: the parent node
|
|
* @uname: the name of subnode
|
|
* @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
|
|
*/
|
|
|
|
int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
|
|
{
|
|
return fdt_subnode_offset(initial_boot_params, node, uname);
|
|
}
|
|
|
|
/**
|
|
* of_get_flat_dt_root - find the root node in the flat blob
|
|
*/
|
|
unsigned long __init of_get_flat_dt_root(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* of_get_flat_dt_size - Return the total size of the FDT
|
|
*/
|
|
int __init of_get_flat_dt_size(void)
|
|
{
|
|
return fdt_totalsize(initial_boot_params);
|
|
}
|
|
|
|
/**
|
|
* of_get_flat_dt_prop - Given a node in the flat blob, return the property ptr
|
|
*
|
|
* This function can be used within scan_flattened_dt callback to get
|
|
* access to properties
|
|
*/
|
|
const void *__init of_get_flat_dt_prop(unsigned long node, const char *name,
|
|
int *size)
|
|
{
|
|
return fdt_getprop(initial_boot_params, node, name, size);
|
|
}
|
|
|
|
/**
|
|
* of_flat_dt_is_compatible - Return true if given node has compat in compatible list
|
|
* @node: node to test
|
|
* @compat: compatible string to compare with compatible list.
|
|
*/
|
|
int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
|
|
{
|
|
return of_fdt_is_compatible(initial_boot_params, node, compat);
|
|
}
|
|
|
|
/**
|
|
* of_flat_dt_match - Return true if node matches a list of compatible values
|
|
*/
|
|
int __init of_flat_dt_match(unsigned long node, const char *const *compat)
|
|
{
|
|
return of_fdt_match(initial_boot_params, node, compat);
|
|
}
|
|
|
|
/**
|
|
* of_get_flat_dt_prop - Given a node in the flat blob, return the phandle
|
|
*/
|
|
uint32_t __init of_get_flat_dt_phandle(unsigned long node)
|
|
{
|
|
return fdt_get_phandle(initial_boot_params, node);
|
|
}
|
|
|
|
struct fdt_scan_status {
|
|
const char *name;
|
|
int namelen;
|
|
int depth;
|
|
int found;
|
|
int (*iterator)(unsigned long node, const char *uname, int depth, void *data);
|
|
void *data;
|
|
};
|
|
|
|
const char * __init of_flat_dt_get_machine_name(void)
|
|
{
|
|
const char *name;
|
|
unsigned long dt_root = of_get_flat_dt_root();
|
|
|
|
name = of_get_flat_dt_prop(dt_root, "model", NULL);
|
|
if (!name)
|
|
name = of_get_flat_dt_prop(dt_root, "compatible", NULL);
|
|
return name;
|
|
}
|
|
|
|
/**
|
|
* of_flat_dt_match_machine - Iterate match tables to find matching machine.
|
|
*
|
|
* @default_match: A machine specific ptr to return in case of no match.
|
|
* @get_next_compat: callback function to return next compatible match table.
|
|
*
|
|
* Iterate through machine match tables to find the best match for the machine
|
|
* compatible string in the FDT.
|
|
*/
|
|
const void * __init of_flat_dt_match_machine(const void *default_match,
|
|
const void * (*get_next_compat)(const char * const**))
|
|
{
|
|
const void *data = NULL;
|
|
const void *best_data = default_match;
|
|
const char *const *compat;
|
|
unsigned long dt_root;
|
|
unsigned int best_score = ~1, score = 0;
|
|
|
|
dt_root = of_get_flat_dt_root();
|
|
while ((data = get_next_compat(&compat))) {
|
|
score = of_flat_dt_match(dt_root, compat);
|
|
if (score > 0 && score < best_score) {
|
|
best_data = data;
|
|
best_score = score;
|
|
}
|
|
}
|
|
if (!best_data) {
|
|
const char *prop;
|
|
int size;
|
|
|
|
pr_err("\n unrecognized device tree list:\n[ ");
|
|
|
|
prop = of_get_flat_dt_prop(dt_root, "compatible", &size);
|
|
if (prop) {
|
|
while (size > 0) {
|
|
printk("'%s' ", prop);
|
|
size -= strlen(prop) + 1;
|
|
prop += strlen(prop) + 1;
|
|
}
|
|
}
|
|
printk("]\n\n");
|
|
return NULL;
|
|
}
|
|
|
|
pr_info("Machine model: %s\n", of_flat_dt_get_machine_name());
|
|
|
|
return best_data;
|
|
}
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
#ifndef __early_init_dt_declare_initrd
|
|
static void __early_init_dt_declare_initrd(unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
initrd_start = (unsigned long)__va(start);
|
|
initrd_end = (unsigned long)__va(end);
|
|
initrd_below_start_ok = 1;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* early_init_dt_check_for_initrd - Decode initrd location from flat tree
|
|
* @node: reference to node containing initrd location ('chosen')
|
|
*/
|
|
static void __init early_init_dt_check_for_initrd(unsigned long node)
|
|
{
|
|
u64 start, end;
|
|
int len;
|
|
const __be32 *prop;
|
|
|
|
pr_debug("Looking for initrd properties... ");
|
|
|
|
prop = of_get_flat_dt_prop(node, "linux,initrd-start", &len);
|
|
if (!prop)
|
|
return;
|
|
start = of_read_number(prop, len/4);
|
|
|
|
prop = of_get_flat_dt_prop(node, "linux,initrd-end", &len);
|
|
if (!prop)
|
|
return;
|
|
end = of_read_number(prop, len/4);
|
|
|
|
__early_init_dt_declare_initrd(start, end);
|
|
|
|
pr_debug("initrd_start=0x%llx initrd_end=0x%llx\n",
|
|
(unsigned long long)start, (unsigned long long)end);
|
|
}
|
|
#else
|
|
static inline void early_init_dt_check_for_initrd(unsigned long node)
|
|
{
|
|
}
|
|
#endif /* CONFIG_BLK_DEV_INITRD */
|
|
|
|
#ifdef CONFIG_SERIAL_EARLYCON
|
|
|
|
int __init early_init_dt_scan_chosen_stdout(void)
|
|
{
|
|
int offset;
|
|
const char *p, *q, *options = NULL;
|
|
int l;
|
|
const struct earlycon_id **p_match;
|
|
const void *fdt = initial_boot_params;
|
|
|
|
offset = fdt_path_offset(fdt, "/chosen");
|
|
if (offset < 0)
|
|
offset = fdt_path_offset(fdt, "/chosen@0");
|
|
if (offset < 0)
|
|
return -ENOENT;
|
|
|
|
p = fdt_getprop(fdt, offset, "stdout-path", &l);
|
|
if (!p)
|
|
p = fdt_getprop(fdt, offset, "linux,stdout-path", &l);
|
|
if (!p || !l)
|
|
return -ENOENT;
|
|
|
|
q = strchrnul(p, ':');
|
|
if (*q != '\0')
|
|
options = q + 1;
|
|
l = q - p;
|
|
|
|
/* Get the node specified by stdout-path */
|
|
offset = fdt_path_offset_namelen(fdt, p, l);
|
|
if (offset < 0) {
|
|
pr_warn("earlycon: stdout-path %.*s not found\n", l, p);
|
|
return 0;
|
|
}
|
|
|
|
for (p_match = __earlycon_table; p_match < __earlycon_table_end;
|
|
p_match++) {
|
|
const struct earlycon_id *match = *p_match;
|
|
|
|
if (!match->compatible[0])
|
|
continue;
|
|
|
|
if (fdt_node_check_compatible(fdt, offset, match->compatible))
|
|
continue;
|
|
|
|
of_setup_earlycon(match, offset, options);
|
|
return 0;
|
|
}
|
|
return -ENODEV;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* early_init_dt_scan_root - fetch the top level address and size cells
|
|
*/
|
|
int __init early_init_dt_scan_root(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
const __be32 *prop;
|
|
|
|
if (depth != 0)
|
|
return 0;
|
|
|
|
dt_root_size_cells = OF_ROOT_NODE_SIZE_CELLS_DEFAULT;
|
|
dt_root_addr_cells = OF_ROOT_NODE_ADDR_CELLS_DEFAULT;
|
|
|
|
prop = of_get_flat_dt_prop(node, "#size-cells", NULL);
|
|
if (prop)
|
|
dt_root_size_cells = be32_to_cpup(prop);
|
|
pr_debug("dt_root_size_cells = %x\n", dt_root_size_cells);
|
|
|
|
prop = of_get_flat_dt_prop(node, "#address-cells", NULL);
|
|
if (prop)
|
|
dt_root_addr_cells = be32_to_cpup(prop);
|
|
pr_debug("dt_root_addr_cells = %x\n", dt_root_addr_cells);
|
|
|
|
/* break now */
|
|
return 1;
|
|
}
|
|
|
|
u64 __init dt_mem_next_cell(int s, const __be32 **cellp)
|
|
{
|
|
const __be32 *p = *cellp;
|
|
|
|
*cellp = p + s;
|
|
return of_read_number(p, s);
|
|
}
|
|
|
|
/**
|
|
* early_init_dt_scan_memory - Look for and parse memory nodes
|
|
*/
|
|
int __init early_init_dt_scan_memory(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
const char *type = of_get_flat_dt_prop(node, "device_type", NULL);
|
|
const __be32 *reg, *endp;
|
|
int l;
|
|
bool hotpluggable;
|
|
|
|
/* We are scanning "memory" nodes only */
|
|
if (type == NULL || strcmp(type, "memory") != 0)
|
|
return 0;
|
|
|
|
reg = of_get_flat_dt_prop(node, "linux,usable-memory", &l);
|
|
if (reg == NULL)
|
|
reg = of_get_flat_dt_prop(node, "reg", &l);
|
|
if (reg == NULL)
|
|
return 0;
|
|
|
|
endp = reg + (l / sizeof(__be32));
|
|
hotpluggable = of_get_flat_dt_prop(node, "hotpluggable", NULL);
|
|
|
|
pr_debug("memory scan node %s, reg size %d,\n", uname, l);
|
|
|
|
while ((endp - reg) >= (dt_root_addr_cells + dt_root_size_cells)) {
|
|
u64 base, size;
|
|
|
|
base = dt_mem_next_cell(dt_root_addr_cells, ®);
|
|
size = dt_mem_next_cell(dt_root_size_cells, ®);
|
|
|
|
if (size == 0)
|
|
continue;
|
|
pr_debug(" - %llx , %llx\n", (unsigned long long)base,
|
|
(unsigned long long)size);
|
|
|
|
early_init_dt_add_memory_arch(base, size);
|
|
|
|
if (!hotpluggable)
|
|
continue;
|
|
|
|
if (early_init_dt_mark_hotplug_memory_arch(base, size))
|
|
pr_warn("failed to mark hotplug range 0x%llx - 0x%llx\n",
|
|
base, base + size);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Convert configs to something easy to use in C code
|
|
*/
|
|
#if defined(CONFIG_CMDLINE_FORCE)
|
|
static const int overwrite_incoming_cmdline = 1;
|
|
static const int read_dt_cmdline;
|
|
static const int concat_cmdline;
|
|
#elif defined(CONFIG_CMDLINE_EXTEND)
|
|
static const int overwrite_incoming_cmdline;
|
|
static const int read_dt_cmdline = 1;
|
|
static const int concat_cmdline = 1;
|
|
#else /* CMDLINE_FROM_BOOTLOADER */
|
|
static const int overwrite_incoming_cmdline;
|
|
static const int read_dt_cmdline = 1;
|
|
static const int concat_cmdline;
|
|
#endif
|
|
|
|
#ifdef CONFIG_CMDLINE
|
|
static const char *config_cmdline = CONFIG_CMDLINE;
|
|
#else
|
|
static const char *config_cmdline = "";
|
|
#endif
|
|
|
|
int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
|
|
int depth, void *data)
|
|
{
|
|
int l = 0;
|
|
const char *p = NULL;
|
|
char *cmdline = data;
|
|
const void *rng_seed;
|
|
|
|
pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
|
|
|
|
if (depth != 1 || !cmdline ||
|
|
(strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
|
|
return 0;
|
|
|
|
early_init_dt_check_for_initrd(node);
|
|
|
|
/* Put CONFIG_CMDLINE in if forced or if data had nothing in it to start */
|
|
if (overwrite_incoming_cmdline || !cmdline[0])
|
|
strlcpy(cmdline, config_cmdline, COMMAND_LINE_SIZE);
|
|
|
|
/* Retrieve command line unless forcing */
|
|
if (read_dt_cmdline)
|
|
p = of_get_flat_dt_prop(node, "bootargs", &l);
|
|
|
|
if (p != NULL && l > 0) {
|
|
if (concat_cmdline) {
|
|
int cmdline_len;
|
|
int copy_len;
|
|
strlcat(cmdline, " ", COMMAND_LINE_SIZE);
|
|
cmdline_len = strlen(cmdline);
|
|
copy_len = COMMAND_LINE_SIZE - cmdline_len - 1;
|
|
copy_len = min((int)l, copy_len);
|
|
strncpy(cmdline + cmdline_len, p, copy_len);
|
|
cmdline[cmdline_len + copy_len] = '\0';
|
|
} else {
|
|
strlcpy(cmdline, p, min((int)l, COMMAND_LINE_SIZE));
|
|
}
|
|
}
|
|
|
|
pr_debug("Command line is: %s\n", (char*)data);
|
|
|
|
rng_seed = of_get_flat_dt_prop(node, "rng-seed", &l);
|
|
if (rng_seed && l > 0) {
|
|
add_bootloader_randomness(rng_seed, l);
|
|
|
|
/* try to clear seed so it won't be found. */
|
|
fdt_nop_property(initial_boot_params, node, "rng-seed");
|
|
|
|
/* update CRC check value */
|
|
of_fdt_crc32 = crc32_be(~0, initial_boot_params,
|
|
fdt_totalsize(initial_boot_params));
|
|
}
|
|
|
|
/* break now */
|
|
return 1;
|
|
}
|
|
|
|
#ifdef CONFIG_HAVE_MEMBLOCK
|
|
#ifndef MIN_MEMBLOCK_ADDR
|
|
#define MIN_MEMBLOCK_ADDR __pa(PAGE_OFFSET)
|
|
#endif
|
|
#ifndef MAX_MEMBLOCK_ADDR
|
|
#define MAX_MEMBLOCK_ADDR ((phys_addr_t)~0)
|
|
#endif
|
|
|
|
void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
|
|
{
|
|
const u64 phys_offset = MIN_MEMBLOCK_ADDR;
|
|
|
|
if (!PAGE_ALIGNED(base)) {
|
|
if (size < PAGE_SIZE - (base & ~PAGE_MASK)) {
|
|
pr_warn("Ignoring memory block 0x%llx - 0x%llx\n",
|
|
base, base + size);
|
|
return;
|
|
}
|
|
size -= PAGE_SIZE - (base & ~PAGE_MASK);
|
|
base = PAGE_ALIGN(base);
|
|
}
|
|
size &= PAGE_MASK;
|
|
|
|
if (base > MAX_MEMBLOCK_ADDR) {
|
|
pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
|
|
base, base + size);
|
|
return;
|
|
}
|
|
|
|
if (base + size - 1 > MAX_MEMBLOCK_ADDR) {
|
|
pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
|
|
((u64)MAX_MEMBLOCK_ADDR) + 1, base + size);
|
|
size = MAX_MEMBLOCK_ADDR - base + 1;
|
|
}
|
|
|
|
if (base + size < phys_offset) {
|
|
pr_warning("Ignoring memory block 0x%llx - 0x%llx\n",
|
|
base, base + size);
|
|
return;
|
|
}
|
|
if (base < phys_offset) {
|
|
pr_warning("Ignoring memory range 0x%llx - 0x%llx\n",
|
|
base, phys_offset);
|
|
size -= phys_offset - base;
|
|
base = phys_offset;
|
|
}
|
|
memblock_add(base, size);
|
|
}
|
|
|
|
int __init __weak early_init_dt_mark_hotplug_memory_arch(u64 base, u64 size)
|
|
{
|
|
return memblock_mark_hotplug(base, size);
|
|
}
|
|
|
|
int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
|
|
phys_addr_t size, bool nomap)
|
|
{
|
|
if (nomap)
|
|
return memblock_remove(base, size);
|
|
return memblock_reserve(base, size);
|
|
}
|
|
|
|
#else
|
|
void __init __weak early_init_dt_add_memory_arch(u64 base, u64 size)
|
|
{
|
|
WARN_ON(1);
|
|
}
|
|
|
|
int __init __weak early_init_dt_mark_hotplug_memory_arch(u64 base, u64 size)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
int __init __weak early_init_dt_reserve_memory_arch(phys_addr_t base,
|
|
phys_addr_t size, bool nomap)
|
|
{
|
|
pr_err("Reserved memory not supported, ignoring range %pa - %pa%s\n",
|
|
&base, &size, nomap ? " (nomap)" : "");
|
|
return -ENOSYS;
|
|
}
|
|
#endif
|
|
|
|
static void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align)
|
|
{
|
|
return memblock_virt_alloc(size, align);
|
|
}
|
|
|
|
bool __init early_init_dt_verify(void *params)
|
|
{
|
|
if (!params)
|
|
return false;
|
|
|
|
/* check device tree validity */
|
|
if (fdt_check_header(params))
|
|
return false;
|
|
|
|
/* Setup flat device-tree pointer */
|
|
initial_boot_params = params;
|
|
of_fdt_crc32 = crc32_be(~0, initial_boot_params,
|
|
fdt_totalsize(initial_boot_params));
|
|
return true;
|
|
}
|
|
|
|
|
|
void __init early_init_dt_scan_nodes(void)
|
|
{
|
|
/* Retrieve various information from the /chosen node */
|
|
of_scan_flat_dt(early_init_dt_scan_chosen, boot_command_line);
|
|
|
|
/* Initialize {size,address}-cells info */
|
|
of_scan_flat_dt(early_init_dt_scan_root, NULL);
|
|
|
|
/* Setup memory, calling early_init_dt_add_memory_arch */
|
|
of_scan_flat_dt(early_init_dt_scan_memory, NULL);
|
|
}
|
|
|
|
bool __init early_init_dt_scan(void *params)
|
|
{
|
|
bool status;
|
|
|
|
status = early_init_dt_verify(params);
|
|
if (!status)
|
|
return false;
|
|
|
|
early_init_dt_scan_nodes();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* unflatten_device_tree - create tree of device_nodes from flat blob
|
|
*
|
|
* unflattens the device-tree passed by the firmware, creating the
|
|
* tree of struct device_node. It also fills the "name" and "type"
|
|
* pointers of the nodes so the normal device-tree walking functions
|
|
* can be used.
|
|
*/
|
|
void __init unflatten_device_tree(void)
|
|
{
|
|
__unflatten_device_tree(initial_boot_params, NULL, &of_root,
|
|
early_init_dt_alloc_memory_arch, false);
|
|
|
|
/* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */
|
|
of_alias_scan(early_init_dt_alloc_memory_arch);
|
|
|
|
unittest_unflatten_overlay_base();
|
|
}
|
|
|
|
/**
|
|
* unflatten_and_copy_device_tree - copy and create tree of device_nodes from flat blob
|
|
*
|
|
* Copies and unflattens the device-tree passed by the firmware, creating the
|
|
* tree of struct device_node. It also fills the "name" and "type"
|
|
* pointers of the nodes so the normal device-tree walking functions
|
|
* can be used. This should only be used when the FDT memory has not been
|
|
* reserved such is the case when the FDT is built-in to the kernel init
|
|
* section. If the FDT memory is reserved already then unflatten_device_tree
|
|
* should be used instead.
|
|
*/
|
|
void __init unflatten_and_copy_device_tree(void)
|
|
{
|
|
int size;
|
|
void *dt;
|
|
|
|
if (!initial_boot_params) {
|
|
pr_warn("No valid device tree found, continuing without\n");
|
|
return;
|
|
}
|
|
|
|
size = fdt_totalsize(initial_boot_params);
|
|
dt = early_init_dt_alloc_memory_arch(size,
|
|
roundup_pow_of_two(FDT_V17_SIZE));
|
|
|
|
if (dt) {
|
|
memcpy(dt, initial_boot_params, size);
|
|
initial_boot_params = dt;
|
|
}
|
|
unflatten_device_tree();
|
|
}
|
|
|
|
#ifdef CONFIG_SYSFS
|
|
static ssize_t of_fdt_raw_read(struct file *filp, struct kobject *kobj,
|
|
struct bin_attribute *bin_attr,
|
|
char *buf, loff_t off, size_t count)
|
|
{
|
|
memcpy(buf, initial_boot_params + off, count);
|
|
return count;
|
|
}
|
|
|
|
static int __init of_fdt_raw_init(void)
|
|
{
|
|
static struct bin_attribute of_fdt_raw_attr =
|
|
__BIN_ATTR(fdt, S_IRUSR, of_fdt_raw_read, NULL, 0);
|
|
|
|
if (!initial_boot_params)
|
|
return 0;
|
|
|
|
if (of_fdt_crc32 != crc32_be(~0, initial_boot_params,
|
|
fdt_totalsize(initial_boot_params))) {
|
|
pr_warn("not creating '/sys/firmware/fdt': CRC check failed\n");
|
|
return 0;
|
|
}
|
|
of_fdt_raw_attr.size = fdt_totalsize(initial_boot_params);
|
|
return sysfs_create_bin_file(firmware_kobj, &of_fdt_raw_attr);
|
|
}
|
|
late_initcall(of_fdt_raw_init);
|
|
#endif
|
|
|
|
#endif /* CONFIG_OF_EARLY_FLATTREE */
|