mirror of
https://git.proxmox.com/git/grub2
synced 2025-05-19 07:52:18 +00:00
e6eced7150
* fs/ext2.c (pupa_ext2_read_file): Correct the value of BLOCKEND when it is EXT2_BLOCK_SIZE (data). New argument READ_HOOK, all callers changed. Set DATA->DISK->READ_HOOK to READ_HOOK before reading and reset it after reading. (pupa_ext2_close): Return PUPA_ERR_NONE. * include/pupa/i386/pc/linux.h (PUPA_LINUX_INITRD_MAX_ADDRESS): Correct value. (struct linux_kernel_header): Add kernel_version and initrd_addr_max. * loader/i386/pc/linux.c (pupa_rescue_cmd_linux): Check whether pupa_file_read succeeds. (pupa_rescue_cmd_initrd): Implement.
88 lines
3.6 KiB
C
88 lines
3.6 KiB
C
/*
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* PUPA -- Preliminary Universal Programming Architecture for GRUB
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* Copyright (C) 1999,2000,2001,2002,2004 Free Software Foundation, Inc.
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* Copyright (C) 2003 Yoshinori K. Okuji <okuji@enbug.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef PUPA_LINUX_MACHINE_HEADER
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#define PUPA_LINUX_MACHINE_HEADER 1
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#define PUPA_LINUX_MAGIC_SIGNATURE 0x53726448 /* "HdrS" */
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#define PUPA_LINUX_DEFAULT_SETUP_SECTS 4
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#define PUPA_LINUX_FLAG_CAN_USE_HEAP 0x80
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#define PUPA_LINUX_INITRD_MAX_ADDRESS 0x37FFFFFF
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#define PUPA_LINUX_MAX_SETUP_SECTS 64
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#define PUPA_LINUX_BOOT_LOADER_TYPE 0x72
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#define PUPA_LINUX_HEAP_END_OFFSET (0x9000 - 0x200)
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#define PUPA_LINUX_BZIMAGE_ADDR 0x100000
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#define PUPA_LINUX_ZIMAGE_ADDR 0x10000
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#define PUPA_LINUX_OLD_REAL_MODE_ADDR 0x90000
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#define PUPA_LINUX_SETUP_STACK 0x9000
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#define PUPA_LINUX_FLAG_BIG_KERNEL 0x1
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/* Linux's video mode selection support. Actually I hate it! */
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#define PUPA_LINUX_VID_MODE_NORMAL 0xFFFF
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#define PUPA_LINUX_VID_MODE_EXTENDED 0xFFFE
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#define PUPA_LINUX_VID_MODE_ASK 0xFFFD
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#define PUPA_LINUX_CL_OFFSET 0x9000
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#define PUPA_LINUX_CL_END_OFFSET 0x90FF
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#define PUPA_LINUX_SETUP_MOVE_SIZE 0x9100
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#define PUPA_LINUX_CL_MAGIC 0xA33F
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#ifndef ASM_FILE
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/* For the Linux/i386 boot protocol version 2.03. */
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struct linux_kernel_header
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{
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pupa_uint8_t code1[0x0020];
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pupa_uint16_t cl_magic; /* Magic number 0xA33F */
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pupa_uint16_t cl_offset; /* The offset of command line */
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pupa_uint8_t code2[0x01F1 - 0x0020 - 2 - 2];
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pupa_uint8_t setup_sects; /* The size of the setup in sectors */
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pupa_uint16_t root_flags; /* If the root is mounted readonly */
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pupa_uint16_t syssize; /* obsolete */
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pupa_uint16_t swap_dev; /* obsolete */
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pupa_uint16_t ram_size; /* obsolete */
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pupa_uint16_t vid_mode; /* Video mode control */
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pupa_uint16_t root_dev; /* Default root device number */
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pupa_uint16_t boot_flag; /* 0xAA55 magic number */
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pupa_uint16_t jump; /* Jump instruction */
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pupa_uint32_t header; /* Magic signature "HdrS" */
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pupa_uint16_t version; /* Boot protocol version supported */
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pupa_uint32_t realmode_swtch; /* Boot loader hook */
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pupa_uint16_t start_sys; /* The load-low segment (obsolete) */
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pupa_uint16_t kernel_version; /* Points to kernel version string */
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pupa_uint8_t type_of_loader; /* Boot loader identifier */
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pupa_uint8_t loadflags; /* Boot protocol option flags */
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pupa_uint16_t setup_move_size; /* Move to high memory size */
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pupa_uint32_t code32_start; /* Boot loader hook */
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pupa_uint32_t ramdisk_image; /* initrd load address */
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pupa_uint32_t ramdisk_size; /* initrd size */
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pupa_uint32_t bootsect_kludge; /* obsolete */
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pupa_uint16_t heap_end_ptr; /* Free memory after setup end */
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pupa_uint16_t pad1; /* Unused */
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char *cmd_line_ptr; /* Points to the kernel command line */
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pupa_uint32_t initrd_addr_max; /* Highest address for initrd */
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} __attribute__ ((packed));
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#endif /* ! ASM_FILE */
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#endif /* ! PUPA_LINUX_MACHINE_HEADER */
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