* grub-core/loader/i386/coreboot/chainloader.c: Support tianocore.
This commit is contained in:
Vladimir Serbinenko
parent
8997730612
commit
5460cfeba8
2 changed files with 164 additions and 1 deletions
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@ -1,3 +1,7 @@
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2013-11-10 Vladimir Serbinenko <phcoder@gmail.com>
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* grub-core/loader/i386/coreboot/chainloader.c: Support tianocore.
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2013-11-10 Vladimir Serbinenko <phcoder@gmail.com>
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* grub-core/loader/i386/coreboot/chainloader.c: Support lzma-compressed
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@ -31,6 +31,8 @@
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#include <grub/i18n.h>
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#include <grub/cbfs_core.h>
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#include <grub/lib/LzmaDec.h>
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#include <grub/efi/pe32.h>
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#include <grub/i386/cpuid.h>
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GRUB_MOD_LICENSE ("GPLv3+");
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@ -197,6 +199,157 @@ load_segment (grub_file_t file, const char *filename,
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}
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}
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static grub_err_t
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load_tianocore (grub_file_t file)
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{
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grub_uint16_t header_length;
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grub_uint32_t section_head;
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grub_uint8_t mz[2], pe[4];
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struct grub_pe32_coff_header coff_head;
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struct file_header
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{
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grub_uint8_t unused[18];
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grub_uint8_t type;
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grub_uint8_t unused2;
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grub_uint8_t size[3];
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grub_uint8_t unused3;
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} file_head;
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grub_relocator_chunk_t ch;
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if (grub_file_seek (file, 48) == (grub_off_t) -1
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|| grub_file_read (file, &header_length, sizeof (header_length))
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!= sizeof (header_length)
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|| grub_file_seek (file, header_length) == (grub_off_t) -1)
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goto fail;
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while (1)
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{
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grub_off_t off;
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if (grub_file_read (file, &file_head, sizeof (file_head))
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!= sizeof (file_head))
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goto fail;
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if (file_head.type != 0xf0)
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break;
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off = grub_get_unaligned32 (file_head.size) & 0xffffff;
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if (off < sizeof (file_head))
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goto fail;
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if (grub_file_seek (file, grub_file_tell (file) + off
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- sizeof (file_head)) == (grub_off_t) -1)
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goto fail;
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}
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if (file_head.type != 0x03)
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goto fail;
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while (1)
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{
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if (grub_file_read (file, §ion_head, sizeof (section_head))
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!= sizeof (section_head))
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goto fail;
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if ((section_head >> 24) != 0x19)
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break;
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if ((section_head & 0xffffff) < sizeof (section_head))
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goto fail;
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if (grub_file_seek (file, grub_file_tell (file)
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+ (section_head & 0xffffff)
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- sizeof (section_head)) == (grub_off_t) -1)
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goto fail;
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}
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if ((section_head >> 24) != 0x10)
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goto fail;
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grub_off_t exe_start = grub_file_tell (file);
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if (grub_file_read (file, &mz, sizeof (mz)) != sizeof (mz))
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goto fail;
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if (mz[0] != 'M' || mz[1] != 'Z')
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goto fail;
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if (grub_file_seek (file, grub_file_tell (file) + 0x3a) == (grub_off_t) -1)
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goto fail;
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if (grub_file_read (file, §ion_head, sizeof (section_head))
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!= sizeof (section_head))
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goto fail;
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if (section_head < 0x40)
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goto fail;
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if (grub_file_seek (file, grub_file_tell (file)
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+ section_head - 0x40) == (grub_off_t) -1)
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goto fail;
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if (grub_file_read (file, &pe, sizeof (pe))
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!= sizeof (pe))
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goto fail;
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if (pe[0] != 'P' || pe[1] != 'E' || pe[2] != '\0' || pe[3] != '\0')
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goto fail;
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if (grub_file_read (file, &coff_head, sizeof (coff_head))
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!= sizeof (coff_head))
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goto fail;
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grub_uint32_t loadaddr;
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switch (coff_head.machine)
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{
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case GRUB_PE32_MACHINE_I386:
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{
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struct grub_pe32_optional_header oh;
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if (grub_file_read (file, &oh, sizeof (oh))
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!= sizeof (oh))
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goto fail;
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if (oh.magic != GRUB_PE32_PE32_MAGIC)
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goto fail;
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loadaddr = oh.image_base - exe_start;
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entry = oh.image_base + oh.entry_addr;
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break;
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}
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case GRUB_PE32_MACHINE_X86_64:
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{
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struct grub_pe64_optional_header oh;
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if (! grub_cpuid_has_longmode)
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{
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grub_error (GRUB_ERR_BAD_OS, "your CPU does not implement AMD64 architecture");
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goto fail;
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}
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if (grub_file_read (file, &oh, sizeof (oh))
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!= sizeof (oh))
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goto fail;
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if (oh.magic != GRUB_PE32_PE64_MAGIC)
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goto fail;
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loadaddr = oh.image_base - exe_start;
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entry = oh.image_base + oh.entry_addr;
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break;
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}
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default:
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goto fail;
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}
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if (grub_file_seek (file, 0) == (grub_off_t) -1)
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goto fail;
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grub_size_t fz = grub_file_size (file);
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if (grub_relocator_alloc_chunk_addr (relocator, &ch,
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loadaddr, fz))
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goto fail;
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if (grub_file_read (file, get_virtual_current_address (ch), fz)
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!= (grub_ssize_t) fz)
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goto fail;
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return GRUB_ERR_NONE;
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fail:
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if (!grub_errno)
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grub_error (GRUB_ERR_BAD_OS, "fv volume is invalid");
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return grub_errno;
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}
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static grub_err_t
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load_chewed (grub_file_t file, const char *filename)
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{
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@ -320,7 +473,13 @@ grub_cmd_chain (grub_command_t cmd __attribute__ ((unused)),
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break;
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default:
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err = grub_error (GRUB_ERR_BAD_OS, "unrecognised payload type");
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if (grub_file_seek (file, 40) == (grub_off_t) -1
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|| grub_file_read (file, &head, sizeof (head)) != sizeof (head)
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|| grub_file_seek (file, 0) == (grub_off_t) -1
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|| head != 0x4856465f)
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err = grub_error (GRUB_ERR_BAD_OS, "unrecognised payload type");
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else
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err = load_tianocore (file);
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break;
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}
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grub_file_close (file);
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