2d2da60fb4
The efi boot stub tries to read the entire initrd in 1 go, however some efi implementations hang if too much if asked to read too much data at the same time. After some experimentation I found out that my asrock p67 board will hang if asked to read chunks of 4MiB, so use a safe value. elilo reads in chunks of 16KiB, but since that requires many read calls I use a value of 1 MiB. hpa suggested adding individual blacklists for when systems are found where this value causes a crash. Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com> Link: http://lkml.kernel.org/r/4EEB3A02.3090201@gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#ifndef BOOT_COMPRESSED_EBOOT_H
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#define BOOT_COMPRESSED_EBOOT_H
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#define SEG_TYPE_DATA (0 << 3)
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#define SEG_TYPE_READ_WRITE (1 << 1)
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#define SEG_TYPE_CODE (1 << 3)
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#define SEG_TYPE_EXEC_READ (1 << 1)
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#define SEG_TYPE_TSS ((1 << 3) | (1 << 0))
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#define SEG_OP_SIZE_32BIT (1 << 0)
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#define SEG_GRANULARITY_4KB (1 << 0)
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#define DESC_TYPE_CODE_DATA (1 << 0)
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#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
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#define EFI_READ_CHUNK_SIZE (1024 * 1024)
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#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
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#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
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#define PIXEL_BIT_MASK 2
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#define PIXEL_BLT_ONLY 3
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#define PIXEL_FORMAT_MAX 4
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struct efi_pixel_bitmask {
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u32 red_mask;
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u32 green_mask;
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u32 blue_mask;
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u32 reserved_mask;
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};
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struct efi_graphics_output_mode_info {
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u32 version;
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u32 horizontal_resolution;
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u32 vertical_resolution;
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int pixel_format;
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struct efi_pixel_bitmask pixel_information;
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u32 pixels_per_scan_line;
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} __packed;
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struct efi_graphics_output_protocol_mode {
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u32 max_mode;
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u32 mode;
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unsigned long info;
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unsigned long size_of_info;
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u64 frame_buffer_base;
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unsigned long frame_buffer_size;
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} __packed;
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struct efi_graphics_output_protocol {
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void *query_mode;
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unsigned long set_mode;
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unsigned long blt;
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struct efi_graphics_output_protocol_mode *mode;
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};
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struct efi_uga_draw_protocol {
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void *get_mode;
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void *set_mode;
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void *blt;
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};
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#endif /* BOOT_COMPRESSED_EBOOT_H */
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