Merge remote-tracking branch 'jwb/next' into next

MAINTAINERS

@@ -3876,7 +3876,7 @@ F:	arch/powerpc/platforms/512x/
 F:	arch/powerpc/platforms/52xx/
 
 LINUX FOR POWERPC EMBEDDED PPC4XX
-M:	Josh Boyer <jwboyer@linux.vnet.ibm.com>
+M:	Josh Boyer <jwboyer@gmail.com>
 M:	Matt Porter <mporter@kernel.crashing.org>
 W:	http://www.penguinppc.org/
 L:	linuxppc-dev@lists.ozlabs.org

arch/powerpc/Kconfig

@@ -842,7 +842,7 @@ config LOWMEM_CAM_NUM
 
 config RELOCATABLE
 	bool "Build a relocatable kernel (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && FSL_BOOKE
+	depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x)
 	help
 	  This builds a kernel image that is capable of running at the
 	  location the kernel is loaded at (some alignment restrictions may

arch/powerpc/boot/dts/taishan.dts

@@ -337,7 +337,7 @@
 				rx-fifo-size = <4096>;
 				tx-fifo-size = <2048>;
 				phy-mode = "rgmii";
-				phy-map = <0x00000001>;
+				phy-address = <1>;
 				rgmii-device = <&RGMII0>;
 				rgmii-channel = <0>;
  				zmii-device = <&ZMII0>;
@@ -361,7 +361,7 @@
 				rx-fifo-size = <4096>;
 				tx-fifo-size = <2048>;
 				phy-mode = "rgmii";
-				phy-map = <0x00000003>;
+				phy-address = <3>;
 				rgmii-device = <&RGMII0>;
 				rgmii-channel = <1>;
  				zmii-device = <&ZMII0>;

arch/powerpc/boot/treeboot-iss4xx.c

@@ -34,9 +34,29 @@
 
 BSS_STACK(4096);
 
+static u32 ibm4xx_memstart;
+
 static void iss_4xx_fixups(void)
 {
-	ibm4xx_sdram_fixup_memsize();
+	void *memory;
+	u32 reg[3];
+
+	memory = finddevice("/memory");
+	if (!memory)
+		fatal("Can't find memory node\n");
+	/* This assumes #address-cells = 2, #size-cells =1 and that */
+	getprop(memory, "reg", reg, sizeof(reg));
+	if (reg[2])
+		/* If the device tree specifies the memory range, use it */
+		ibm4xx_memstart = reg[1];
+	else
+		/* othersize, read it from the SDRAM controller */
+		ibm4xx_sdram_fixup_memsize();
+}
+
+static void *iss_4xx_vmlinux_alloc(unsigned long size)
+{
+	return (void *)ibm4xx_memstart;
 }
 
 #define SPRN_PIR	0x11E	/* Processor Indentification Register */
@@ -48,6 +68,7 @@ void platform_init(void)
 
 	simple_alloc_init(_end, avail_ram, 128, 64);
 	platform_ops.fixups = iss_4xx_fixups;
+	platform_ops.vmlinux_alloc = iss_4xx_vmlinux_alloc;
 	platform_ops.exit = ibm44x_dbcr_reset;
 	pir_reg = mfspr(SPRN_PIR);
 	fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);

arch/powerpc/configs/44x/iss476-smp_defconfig

@@ -3,8 +3,8 @@ CONFIG_SMP=y
 CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
+CONFIG_SPARSE_IRQ=y
 CONFIG_LOG_BUF_SHIFT=14
-CONFIG_SYSFS_DEPRECATED_V2=y
 CONFIG_BLK_DEV_INITRD=y
 # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
 CONFIG_EXPERT=y
@@ -21,10 +21,11 @@ CONFIG_ISS4xx=y
 CONFIG_HZ_100=y
 CONFIG_MATH_EMULATION=y
 CONFIG_IRQ_ALL_CPUS=y
-CONFIG_SPARSE_IRQ=y
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE="root=/dev/issblk0"
 # CONFIG_PCI is not set
+CONFIG_ADVANCED_OPTIONS=y
+CONFIG_RELOCATABLE=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y
@@ -67,7 +68,6 @@ CONFIG_EXT3_FS=y
 # CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
 CONFIG_EXT3_FS_POSIX_ACL=y
 CONFIG_EXT3_FS_SECURITY=y
-CONFIG_INOTIFY=y
 CONFIG_PROC_KCORE=y
 CONFIG_TMPFS=y
 CONFIG_CRAMFS=y

arch/powerpc/include/asm/mmu.h

@@ -125,9 +125,14 @@ static inline int mmu_has_feature(unsigned long feature)
 	return (cur_cpu_spec->mmu_features & feature);
 }
 
+static inline void mmu_clear_feature(unsigned long feature)
+{
+	cur_cpu_spec->mmu_features &= ~feature;
+}
+
 extern unsigned int __start___mmu_ftr_fixup, __stop___mmu_ftr_fixup;
 
-/* MMU initialization (64-bit only fo now) */
+/* MMU initialization */
 extern void early_init_mmu(void);
 extern void early_init_mmu_secondary(void);
 

arch/powerpc/kernel/head_44x.S

@@ -93,6 +93,30 @@ _ENTRY(_start);
 
 	bl	early_init
 
+#ifdef CONFIG_RELOCATABLE
+	/*
+	 * r25 will contain RPN/ERPN for the start address of memory
+	 *
+	 * Add the difference between KERNELBASE and PAGE_OFFSET to the
+	 * start of physical memory to get kernstart_addr.
+	 */
+	lis	r3,kernstart_addr@ha
+	la	r3,kernstart_addr@l(r3)
+
+	lis	r4,KERNELBASE@h
+	ori	r4,r4,KERNELBASE@l
+	lis	r5,PAGE_OFFSET@h
+	ori	r5,r5,PAGE_OFFSET@l
+	subf	r4,r5,r4
+
+	rlwinm	r6,r25,0,28,31	/* ERPN */
+	rlwinm	r7,r25,0,0,3	/* RPN - assuming 256 MB page size */
+	add	r7,r7,r4
+
+	stw	r6,0(r3)
+	stw	r7,4(r3)
+#endif
+
 /*
  * Decide what sort of machine this is and initialize the MMU.
  */
@@ -1001,9 +1025,6 @@ clear_utlb_entry:
 	lis	r3,PAGE_OFFSET@h
 	ori	r3,r3,PAGE_OFFSET@l
 
-	/* Kernel is at the base of RAM */
-	li r4, 0			/* Load the kernel physical address */
-
 	/* Load the kernel PID = 0 */
 	li	r0,0
 	mtspr	SPRN_PID,r0
@@ -1013,9 +1034,8 @@ clear_utlb_entry:
 	clrrwi	r3,r3,12		/* Mask off the effective page number */
 	ori	r3,r3,PPC47x_TLB0_VALID | PPC47x_TLB0_256M
 
-	/* Word 1 */
+	/* Word 1 - use r25.  RPN is the same as the original entry */
-	clrrwi	r4,r4,12		/* Mask off the real page number */
+
-					/* ERPN is 0 for first 4GB page */
 	/* Word 2 */
 	li	r5,0
 	ori	r5,r5,PPC47x_TLB2_S_RWX
@@ -1026,7 +1046,7 @@ clear_utlb_entry:
 	/* We write to way 0 and bolted 0 */
 	lis	r0,0x8800
 	tlbwe	r3,r0,0
-	tlbwe	r4,r0,1
+	tlbwe	r25,r0,1
 	tlbwe	r5,r0,2
 
 /*
@@ -1124,7 +1144,13 @@ head_start_common:
 	lis	r4,interrupt_base@h	/* IVPR only uses the high 16-bits */
 	mtspr	SPRN_IVPR,r4
 
-	addis	r22,r22,KERNELBASE@h
+	/*
+	 * If the kernel was loaded at a non-zero 256 MB page, we need to
+	 * mask off the most significant 4 bits to get the relative address
+	 * from the start of physical memory
+	 */
+	rlwinm	r22,r22,0,4,31
+	addis	r22,r22,PAGE_OFFSET@h
 	mtlr	r22
 	isync
 	blr

arch/powerpc/kernel/setup_32.c

@@ -127,6 +127,8 @@ notrace void __init machine_init(unsigned long dt_ptr)
 	/* Do some early initialization based on the flat device tree */
 	early_init_devtree(__va(dt_ptr));
 
+	early_init_mmu();
+
 	probe_machine();
 
 	setup_kdump_trampoline();

arch/powerpc/mm/44x_mmu.c

@@ -186,10 +186,11 @@ void __init MMU_init_hw(void)
 unsigned long __init mmu_mapin_ram(unsigned long top)
 {
 	unsigned long addr;
+	unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1);
 
 	/* Pin in enough TLBs to cover any lowmem not covered by the
 	 * initial 256M mapping established in head_44x.S */
-	for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
+	for (addr = memstart + PPC_PIN_SIZE; addr < lowmem_end_addr;
 	     addr += PPC_PIN_SIZE) {
 		if (mmu_has_feature(MMU_FTR_TYPE_47x))
 			ppc47x_pin_tlb(addr + PAGE_OFFSET, addr);
@@ -218,19 +219,25 @@ unsigned long __init mmu_mapin_ram(unsigned long top)
 void setup_initial_memory_limit(phys_addr_t first_memblock_base,
 				phys_addr_t first_memblock_size)
 {
+	u64 size;
+
+#ifndef CONFIG_RELOCATABLE
 	/* We don't currently support the first MEMBLOCK not mapping 0
 	 * physical on those processors
 	 */
 	BUG_ON(first_memblock_base != 0);
+#endif
 
 	/* 44x has a 256M TLB entry pinned at boot */
-	memblock_set_current_limit(min_t(u64, first_memblock_size, PPC_PIN_SIZE));
+	size = (min_t(u64, first_memblock_size, PPC_PIN_SIZE));
+	memblock_set_current_limit(first_memblock_base + size);
 }
 
 #ifdef CONFIG_SMP
 void __cpuinit mmu_init_secondary(int cpu)
 {
 	unsigned long addr;
+	unsigned long memstart = memstart_addr & ~(PPC_PIN_SIZE - 1);
 
 	/* Pin in enough TLBs to cover any lowmem not covered by the
 	 * initial 256M mapping established in head_44x.S
@@ -241,7 +248,7 @@ void __cpuinit mmu_init_secondary(int cpu)
 	 * stack. current (r2) isn't initialized, smp_processor_id()
 	 * will not work, current thread info isn't accessible, ...
 	 */
-	for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
+	for (addr = memstart + PPC_PIN_SIZE; addr < lowmem_end_addr;
 	     addr += PPC_PIN_SIZE) {
 		if (mmu_has_feature(MMU_FTR_TYPE_47x))
 			ppc47x_pin_tlb(addr + PAGE_OFFSET, addr);

arch/powerpc/mm/tlb_hash32.c

@@ -177,3 +177,7 @@ void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 	flush_range(vma->vm_mm, start, end);
 }
 EXPORT_SYMBOL(flush_tlb_range);
+
+void __init early_init_mmu(void)
+{
+}

arch/powerpc/mm/tlb_nohash.c

@@ -35,6 +35,7 @@
 #include <linux/preempt.h>
 #include <linux/spinlock.h>
 #include <linux/memblock.h>
+#include <linux/of_fdt.h>
 
 #include <asm/tlbflush.h>
 #include <asm/tlb.h>
@@ -272,6 +273,17 @@ EXPORT_SYMBOL(flush_tlb_page);
 
 #endif /* CONFIG_SMP */
 
+#ifdef CONFIG_PPC_47x
+void __init early_init_mmu_47x(void)
+{
+#ifdef CONFIG_SMP
+	unsigned long root = of_get_flat_dt_root();
+	if (of_get_flat_dt_prop(root, "cooperative-partition", NULL))
+		mmu_clear_feature(MMU_FTR_USE_TLBIVAX_BCAST);
+#endif /* CONFIG_SMP */
+}
+#endif /* CONFIG_PPC_47x */
+
 /*
  * Flush kernel TLB entries in the given range
  */
@@ -599,4 +611,11 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base,
 	/* Finally limit subsequent allocations */
 	memblock_set_current_limit(first_memblock_base + ppc64_rma_size);
 }
+#else /* ! CONFIG_PPC64 */
+void __init early_init_mmu(void)
+{
+#ifdef CONFIG_PPC_47x
+	early_init_mmu_47x();
+#endif
+}
 #endif /* CONFIG_PPC64 */

arch/powerpc/sysdev/ppc4xx_pci.c

@@ -650,12 +650,74 @@ struct ppc4xx_pciex_hwops
 	int (*core_init)(struct device_node *np);
 	int (*port_init_hw)(struct ppc4xx_pciex_port *port);
 	int (*setup_utl)(struct ppc4xx_pciex_port *port);
+	void (*check_link)(struct ppc4xx_pciex_port *port);
 };
 
 static struct ppc4xx_pciex_hwops *ppc4xx_pciex_hwops;
 
 #ifdef CONFIG_44x
 
+static int __init ppc4xx_pciex_wait_on_sdr(struct ppc4xx_pciex_port *port,
+					   unsigned int sdr_offset,
+					   unsigned int mask,
+					   unsigned int value,
+					   int timeout_ms)
+{
+	u32 val;
+
+	while(timeout_ms--) {
+		val = mfdcri(SDR0, port->sdr_base + sdr_offset);
+		if ((val & mask) == value) {
+			pr_debug("PCIE%d: Wait on SDR %x success with tm %d (%08x)\n",
+				 port->index, sdr_offset, timeout_ms, val);
+			return 0;
+		}
+		msleep(1);
+	}
+	return -1;
+}
+
+static int __init ppc4xx_pciex_port_reset_sdr(struct ppc4xx_pciex_port *port)
+{
+	/* Wait for reset to complete */
+	if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS, 1 << 20, 0, 10)) {
+		printk(KERN_WARNING "PCIE%d: PGRST failed\n",
+		       port->index);
+		return -1;
+	}
+	return 0;
+}
+
+static void __init ppc4xx_pciex_check_link_sdr(struct ppc4xx_pciex_port *port)
+{
+	printk(KERN_INFO "PCIE%d: Checking link...\n", port->index);
+
+	/* Check for card presence detect if supported, if not, just wait for
+	 * link unconditionally.
+	 *
+	 * note that we don't fail if there is no link, we just filter out
+	 * config space accesses. That way, it will be easier to implement
+	 * hotplug later on.
+	 */
+	if (!port->has_ibpre ||
+	    !ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
+				      1 << 28, 1 << 28, 100)) {
+		printk(KERN_INFO
+		       "PCIE%d: Device detected, waiting for link...\n",
+		       port->index);
+		if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
+					     0x1000, 0x1000, 2000))
+			printk(KERN_WARNING
+			       "PCIE%d: Link up failed\n", port->index);
+		else {
+			printk(KERN_INFO
+			       "PCIE%d: link is up !\n", port->index);
+			port->link = 1;
+		}
+	} else
+		printk(KERN_INFO "PCIE%d: No device detected.\n", port->index);
+}
+
 /* Check various reset bits of the 440SPe PCIe core */
 static int __init ppc440spe_pciex_check_reset(struct device_node *np)
 {
@@ -806,7 +868,7 @@ static int ppc440spe_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 	dcri_clrset(SDR0, port->sdr_base + PESDRn_RCSSET,
 			(1 << 24) | (1 << 16), 1 << 12);
 
-	return 0;
+	return ppc4xx_pciex_port_reset_sdr(port);
 }
 
 static int ppc440speA_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
@@ -856,6 +918,7 @@ static struct ppc4xx_pciex_hwops ppc440speA_pcie_hwops __initdata =
 	.core_init	= ppc440spe_pciex_core_init,
 	.port_init_hw	= ppc440speA_pciex_init_port_hw,
 	.setup_utl	= ppc440speA_pciex_init_utl,
+	.check_link	= ppc4xx_pciex_check_link_sdr,
 };
 
 static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata =
@@ -863,6 +926,7 @@ static struct ppc4xx_pciex_hwops ppc440speB_pcie_hwops __initdata =
 	.core_init	= ppc440spe_pciex_core_init,
 	.port_init_hw	= ppc440speB_pciex_init_port_hw,
 	.setup_utl	= ppc440speB_pciex_init_utl,
+	.check_link	= ppc4xx_pciex_check_link_sdr,
 };
 
 static int __init ppc460ex_pciex_core_init(struct device_node *np)
@@ -944,7 +1008,7 @@ static int ppc460ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 
 	port->has_ibpre = 1;
 
-	return 0;
+	return ppc4xx_pciex_port_reset_sdr(port);
 }
 
 static int ppc460ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
@@ -972,6 +1036,7 @@ static struct ppc4xx_pciex_hwops ppc460ex_pcie_hwops __initdata =
 	.core_init	= ppc460ex_pciex_core_init,
 	.port_init_hw	= ppc460ex_pciex_init_port_hw,
 	.setup_utl	= ppc460ex_pciex_init_utl,
+	.check_link	= ppc4xx_pciex_check_link_sdr,
 };
 
 static int __init ppc460sx_pciex_core_init(struct device_node *np)
@@ -1075,7 +1140,7 @@ static int ppc460sx_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 
 	port->has_ibpre = 1;
 
-	return 0;
+	return ppc4xx_pciex_port_reset_sdr(port);
 }
 
 static int ppc460sx_pciex_init_utl(struct ppc4xx_pciex_port *port)
@@ -1089,6 +1154,7 @@ static struct ppc4xx_pciex_hwops ppc460sx_pcie_hwops __initdata = {
 	.core_init	= ppc460sx_pciex_core_init,
 	.port_init_hw	= ppc460sx_pciex_init_port_hw,
 	.setup_utl	= ppc460sx_pciex_init_utl,
+	.check_link	= ppc4xx_pciex_check_link_sdr,
 };
 
 #endif /* CONFIG_44x */
@@ -1154,7 +1220,7 @@ static int ppc405ex_pciex_init_port_hw(struct ppc4xx_pciex_port *port)
 
 	port->has_ibpre = 1;
 
-	return 0;
+	return ppc4xx_pciex_port_reset_sdr(port);
 }
 
 static int ppc405ex_pciex_init_utl(struct ppc4xx_pciex_port *port)
@@ -1183,11 +1249,11 @@ static struct ppc4xx_pciex_hwops ppc405ex_pcie_hwops __initdata =
 	.core_init	= ppc405ex_pciex_core_init,
 	.port_init_hw	= ppc405ex_pciex_init_port_hw,
 	.setup_utl	= ppc405ex_pciex_init_utl,
+	.check_link	= ppc4xx_pciex_check_link_sdr,
 };
 
 #endif /* CONFIG_40x */
 
-
 /* Check that the core has been initied and if not, do it */
 static int __init ppc4xx_pciex_check_core_init(struct device_node *np)
 {
@@ -1261,26 +1327,6 @@ static void __init ppc4xx_pciex_port_init_mapping(struct ppc4xx_pciex_port *port
 	dcr_write(port->dcrs, DCRO_PEGPL_MSGMSK, 0);
 }
 
-static int __init ppc4xx_pciex_wait_on_sdr(struct ppc4xx_pciex_port *port,
-					   unsigned int sdr_offset,
-					   unsigned int mask,
-					   unsigned int value,
-					   int timeout_ms)
-{
-	u32 val;
-
-	while(timeout_ms--) {
-		val = mfdcri(SDR0, port->sdr_base + sdr_offset);
-		if ((val & mask) == value) {
-			pr_debug("PCIE%d: Wait on SDR %x success with tm %d (%08x)\n",
-				 port->index, sdr_offset, timeout_ms, val);
-			return 0;
-		}
-		msleep(1);
-	}
-	return -1;
-}
-
 static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
 {
 	int rc = 0;
@@ -1291,40 +1337,8 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
 	if (rc != 0)
 		return rc;
 
-	printk(KERN_INFO "PCIE%d: Checking link...\n",
+	if (ppc4xx_pciex_hwops->check_link)
-	       port->index);
+		ppc4xx_pciex_hwops->check_link(port);
-
-	/* Wait for reset to complete */
-	if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS, 1 << 20, 0, 10)) {
-		printk(KERN_WARNING "PCIE%d: PGRST failed\n",
-		       port->index);
-		return -1;
-	}
-
-	/* Check for card presence detect if supported, if not, just wait for
-	 * link unconditionally.
-	 *
-	 * note that we don't fail if there is no link, we just filter out
-	 * config space accesses. That way, it will be easier to implement
-	 * hotplug later on.
-	 */
-	if (!port->has_ibpre ||
-	    !ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
-				      1 << 28, 1 << 28, 100)) {
-		printk(KERN_INFO
-		       "PCIE%d: Device detected, waiting for link...\n",
-		       port->index);
-		if (ppc4xx_pciex_wait_on_sdr(port, PESDRn_LOOP,
-					     0x1000, 0x1000, 2000))
-			printk(KERN_WARNING
-			       "PCIE%d: Link up failed\n", port->index);
-		else {
-			printk(KERN_INFO
-			       "PCIE%d: link is up !\n", port->index);
-			port->link = 1;
-		}
-	} else
-		printk(KERN_INFO "PCIE%d: No device detected.\n", port->index);
 
 	/*
 	 * Initialize mapping: disable all regions and configure
@@ -1347,14 +1361,17 @@ static int __init ppc4xx_pciex_port_init(struct ppc4xx_pciex_port *port)
 	/*
 	 * Check for VC0 active and assert RDY.
 	 */
-	if (port->link &&
+	if (port->sdr_base) {
-	    ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS,
+		if (port->link &&
-				     1 << 16, 1 << 16, 5000)) {
+		    ppc4xx_pciex_wait_on_sdr(port, PESDRn_RCSSTS,
-		printk(KERN_INFO "PCIE%d: VC0 not active\n", port->index);
+					     1 << 16, 1 << 16, 5000)) {
-		port->link = 0;
+			printk(KERN_INFO "PCIE%d: VC0 not active\n", port->index);
+			port->link = 0;
+		}
+
+		dcri_clrset(SDR0, port->sdr_base + PESDRn_RCSSET, 0, 1 << 20);
 	}
 
-	dcri_clrset(SDR0, port->sdr_base + PESDRn_RCSSET, 0, 1 << 20);
 	msleep(100);
 
 	return 0;