* kern/powerpc/ieee1275/openfw.c (grub_devalias_iterate): Skip any
property named `name'. Correctly handle the error returned by
`grub_ieee1275_finddevice' if a device can not be opened.
* term/i386/pc/vga.c (VGA_HEIGHT): Changed to 350.
(PAGE_OFFSET): New macro.
(CRTC_ADDR_PORT): Likewise.
(CRTC_DATA_PORT): Likewise.
(START_ADDR_HIGH_REGISTER): Likewise.
(START_ADDR_LOW_REGISTER): Likewise.
(GRAPHICS_ADDR_PORT): Likewise.
(GRAPHICS_DATA_PORT): Likewise.
(READ_MAP_REGISTER): Likewise.
(INPUT_STATUS1_REGISTER): Likewise.
(INPUT_STATUS1_VERTR_BIT): Likewise.
(page): New variable.
(wait_vretrace): New function.
(set_read_map): Likewise.
(set_start_address): Likewise.
(grub_vga_init): Use mode 0x10 instead of mode 0x12. Switch to
the right page.
(check_vga_mem): Take the page into account.
(write_char): Likewise.
(write_cursor): Likewise.
(scroll_up): Likewise. Copy the page to the page that is not
shown and switch between both pages.
(grub_vga_putchar): Fix off by one error.
(grub_vga_cls): Wait for the vertical retrace. Take the page into
account.
* disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_open): Do not
append ":0" to devpath if the GRUB_IEEE1275_NO_PARTITION_0 flag is
set in grub_ieee1275_flags.
* include/grub/powerpc/ieee1275/ieee1275.h (abort): Add function
prototype.
* kern/powerpc/ieee1275/init.c (grub_machine_init): Call
grub_console_init first.
Change the memory range used for grub_ieee1275_claim and
grub_mm_init_region.
Print an error message if the claim fails.
Include <grub/misc.h>.
* disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_iterate):
Call grub_children_iterate for device nodes of type `scsi',
`ide', or `ata'.
(grub_ofdisk_open): Remove manual device alias resolution.
Fix memory leak when device cannot be opened.
* include/grub/powerpc/ieee1275/ieee1275.h
(grub_children_iterate): New prototype.
* kern/powerpc/ieee1275/openfw.c (grub_children_iterate):
New function.
* boot/powerpc/ieee1275/ieee1275.c (grub_ieee1275_get_property):
Return -1 if args.size was -1.
* boot/powerpc/ieee1275/cmain.c (grub_ieee1275_flags): New global.
(cmain): Accept 3 parameters. Test for 0xdeadbeef, indicating Old
World Macintosh. If Old Wold, set flag in grub_ieee1275_flags; claim
Open Firmware's memory for it; claim memory from _start to _end.
* boot/powerpc/ieee1275/crt0.S (__bss_start): New extern.
(_end): New extern.
(_start): Zero BSS from __bss_start to _end.
* include/grub/powerpc/ieee1275/ieee1275.h (grub_ieee1275_flags):
New extern.
(GRUB_IEEE1275_NO_PARTITION_0): New #define.
* boot/powerpc/ieee1275/ieee1275.c (grub_ieee1275_claim): change
void * arguments to grub_addr_t. All callers updated. Also make
the `result' argument optional.
(grub_ieee1275_release): change void * arguments to grub_addr_t.
All callers updated.
* commands/ls.c (grub_ls_list_files): Use the string following the
initial ')', if present, as the filesystem path.
* kern/rescue.c (grub_rescue_cmd_ls): Likewise.
* conf/powerpc-ieee1275.rmk (grubof_SOURCES): List crt0.S first.
Make the source code of the menu interface more readable.
* normal/menu.c: Include grub/mm.h.
(TERM_WIDTH): New macro.
(TERM_HEIGHT): Likewise.
(TERM_INFO_HEIGHT): Likewise.
(TERM_MARGIN): Likewise.
(TERM_SCROLL_WIDTH): Likewise.
(TERM_TOP_BORDER_Y): Likewise.
(TERM_LEFT_BORDER_X): Likewise.
(TERM_BORDER_WIDTH): Likewise.
(TERM_MESSAGE_HEIGHT): Likewise.
(TERM_BORDER_HEIGHT): Likewise.
(TERM_NUM_ENTRIES): Likewise.
(TERM_FIRST_ENTRY_Y): Likewise.
(TERM_ENTRY_WIDTH): Likewise.
(TERM_CURSOR_X): Likewise.
(draw_border): Use macros instead of magic numbers.
(print_entry): Likewise.
(print_entries): Likewise.
(run_menu): Likewise. Also, handle the key 'e'.
(run_menu_entry): Ignore empty command lines.
(print_message): Added a new argument EDIT. If EDIT is true,
print a different message.
(init_page): Likewise.
(edit_menu_entry): New function. Not implemented yet.
Add `linux.mod' and `multiboot.mod' so linux and multiboot kernels
can be loaded from normal mode.
* conf/i386-pc.rmk (pkgdata_MODULES): Add `linux.mod' and
`multiboot.mod'.
(linux_mod_SOURCES, linux_mod_CFLAGS, multiboot_mod_SOURCES)
(multiboot_mod_CFLAGS): New variables.
* loader/i386/pc/linux_normal.c: New file.
* loader/i386/pc/multiboot_normal.c: Likewise.
* loader/i386/pc/linux.c (grub_rescue_cmd_initrd): Don't use the
attribute `unused'.
* fs/ext2.c (grub_ext2_iterate_dir): Fix typos in inode type. Use
`fdiro' to read the mode information from instead of `diro'.
* fs/fshelp.c (grub_fshelp_find_file): Set type to foundtype after
looking up a symlink.
* include/grub/normal.h (GRUB_COMMAND_FLAG_NO_ARG_PARSE): New
macro.
* normal/command.c (grub_command_execute): Don't parse the
arguments when `GRUB_COMMAND_FLAG_NO_ARG_PARSE' is set in the
flags of the command.
* normal/menu.c (grub_menu_run): Fix typo.
From Hollis Blanchard <hollis@penguinppc.org>:
* kern/misc.c (memmove): New alias for grub_memmove.
(memcmp): New alias for grub_memcmp.
(memset): New alias for grub_memset.
* boot/powerpc/ieee1275/ieee1275.c (grub_ieee1275_get_property):
Change "int handle" to "grub_ieee1275_phandle_t handle".
* include/grub/powerpc/ieee1275/ieee1275.h
(grub_ieee1275_get_property): Likewise.
Added normal mode command `chainloader' as module chain.mod, which
depends on normal.mod and _chain.mod.
* conf/i386-pc.rmk (pkgdata_MODULES): Add `chain.mod'.
(chain_mod_SOURCES, chain_mod_CFLAGS): Variables added.
* include/grub/i386/pc/loader.h (grub_rescue_cmd_chainloader):
Deleted prototype.
* loader/i386/pc/chainloader.c (grub_rescue_cmd_chainloader): All
but arguments parsing moved to ...
(grub_chainloader_cmd): ... here. New function.
* include/grub/i386/pc/chainloader.h: New file.
* loader/i386/pc/chainloader_normal.c: Likewise.
* conf/i386-pc.rmk (kernel_img_SOURCES): Added kern/fshelp.c.
(grub_mkimage_LDFLAGS): Likewise.
(grub_emu_SOURCES): Likewise.
(kernel_img_HEADERS): Added fshelp.h.
* fs/ext2.c: Include <grub/fshelp.h>.
(FILETYPE_REG): New macro.
(FILETYPE_INO_REG): Likewise.
(grub_ext_sblock): Renamed to `grub_ext2_sblock'.
Changed all users.
(ext2_block_group): Renamed to `grub_ext2_block_group'. Changed
all users.
(grub_fshelp_node): New struct.
(grub_ext2_data): Added member `diropen'. Changed member `inode'
to a pointer.
(grub_ext2_get_file_block): Removed function.
(grub_ext2_read_block): New function.
(grub_ext2_read_file): Replaced parameter `data' by `node'.
This function was written.
(grub_ext2_mount): Read the root inode. Create a diropen struct.
(grub_ext2_find_file): Removed function.
(grub_ext2_read_symlink): New function.
(grub_ext2_iterate_dir): Likewise.
(grub_ext2_open): Rewritten.
(grub_ext2_dir): Rewritten.
* include/grub/fshelp.h: New file.
* fs/fshelp.c: Likewise.
* normal/menu.c: Include grub/loader.h and grub/machine/time.h.
(print_message): Add a missing newline.
(run_menu): Added timeout support.
(run_menu_entry): New local function.
(grub_menu_run): Added support for booting.
* kern/loader.c (grub_loader_is_loaded): New function.
* include/grub/powerpc/ieee1275/time.h: Include grub/symbol.h.
(grub_get_rtc): Exported.
* include/grub/i386/pc/time.h: Include grub/symbol.h.
(grub_get_rtc): Exported.
* include/grub/normal.h (struct grub_command_list): Remove
constant from the member `command'.
* include/grub/loader.h (grub_loader_is_loaded): Declared.
* include/grub/err.h (GRUB_ERR_INVALID_COMMAND): New constant.
* conf/i386-pc.rmk (kernel_img_HEADERS): Added machine/time.h.
Add support for the JFS filesystem.
* fs/jfs.c: New file.
* include/grub/fs.h (grub_jfs_init): New prototype.
(grub_jfs_fini): New prototype.
* conf/i386-pc.rmk (grub_setup_SOURCES): Add fs/jfs.c.
(grub_emu_SOURCES): Likewise.
(pkgdata_MODULES): Add jfs.mod.
(jfs_mod_SOURCES): New variable.
(jfs_mod_CFLAGS): Likewise.
* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Add fs.jfs.c.
(grubof_SOURCES): Likewise.
* util/grub-emu.c (main): Initialize and deinitialize JFS support.
* fs/fat.c (grub_fat_find_dir): Convert the filename little
endian to the host endian.
(grub_fat_utf16_to_utf8): Move function from there...
* kern/misc.c (grub_utf16_to_utf8): ...to here. Do not convert
the endianess of the source string anymore.
* include/grub/misc.h (grub_utf16_to_utf8): New prototype.
* commands/boot.c (grub_boot_init) [GRUB_UTIL]: Make conditional.
(grub_boot_fini) [GRUB_UTIL]: Likewise.
(GRUB_MOD_INIT) [!GRUB_UTIL]: Likewise.
(GRUB_MOD_FINI) [!GRUB_UTIL]: Likewise.
* fs/hfs.c (grub_hfs_find_node): Add a prototype for `node_found'.
(grub_hfs_iterate_dir): Make the function static. Add prototypes
for `node_found' and `it_dir'.
(grub_hfs_dir): Add prototype for `dir_hook'.
* fs/minix.c (grub_minix_get_file_block): Add prototype for
`grub_get_indir'. Rename `indir' in two blocks to `indir16'
and `indir32' to silence a gcc warning.
* include/grub/fs.h (grub_hfs_init): New prototype.
(grub_hfs_fini): Likewise.
Each disk device has its own id now. This is useful to make use
of multiple disk devices.
* include/grub/disk.h (grub_disk_dev_id): New enum.
(GRUB_DISK_DEVICE_BIOSDISK_ID): New constant.
(GRUB_DISK_DEVICE_OFDISK_ID): Likewise.
* disk/i386/pc/biosdisk.c (grub_biosdisk_dev): Specify
GRUB_DISK_DEVICE_BIOSDISK_ID as an id.
* disk/powerpc/ieee1275/ofdisk.c (grub_ofdisk_dev): Specify
GRUB_DISK_DEVICE_OFDISK_ID as an id.
* util/i386/pc/biosdisk.c (grub_util_biosdisk_dev): Specify
GRUB_DISK_DEVICE_BIOSDISK_ID as an id.
* include/grub/disk.h (struct grub_disk_dev): Added a new member
"id" which is used by the cache manager.
* normal/main.c (grub_normal_init_page): Use "GNU GRUB" instead
of just "GRUB".
* include/grub/arg.h (GRUB_ARG_OPTION_OPTIONAL): Surround macro
with parentheses.
* fs/ext2.c (FILETYPE_UNKNOWN): New macro.
(grub_ext2_dir): In case the directory entry type is unknown, read
it from the inode.
* loader/powerpc/ieee1275/linux.c (grub_linux_init): Pass
grub_load_linux instead of grub_rescue_cmd_linux as second
argument of grub_rescue_register_command.
* Makefile.in (RMKFILES): Add conf/powerpc-ieee1275.rmk.
* normal/arg.c (grub_arg_parse): Correct error handling after
reallocating the argumentlist (check if `argl' is not null instead
of checking if `args' is not null).
* kern/mm.c (grub_realloc): Return the same pointer when using the
same region, instead of returning the header address.
* disk/powerpc/ieee1275/partition.c (grub_partition_iterate): Skip
one block instead of two when looking for the initial partition.
(grub_partition_probe): Initialize the local variable `p' with 0.
Use base 10 for the grub_strtoul call.
* kern/misc.c (grub_strncpy): Fix off by one bug. Eliminated the
need for one local variable.
(grub_strtoul): Don't add the new value to `num', instead of that
just assign it.
* conf/i386-pc.rmk (pkgdata_IMAGE): Add pxeboot.img.
(pxeboot_img_SOURCES): New variable.
(pxeboot_img_ASFLAGS): Likewise.
(pxeboot_img_LDFLAGS): Likewise.
* boot/i386/pc/pxeboot.S: New file. Based on pxeloader.S from
GRUB Legacy and boot.S. Adopted for GRUB 2 by lode leroy
<lode_leroy@hotmail.com>.
* fs/ext2.c (FILETYPE_INO_MASK, FILETYPE_INO_DIRECTORY)
(FILETYPE_INO_SYMLINK): New macros.
(grub_ext2_find_file): Check if the node is a directory using the
inode stat information instead of using the filetype in the
dirent. Exclude the first character of an absolute symlink.
(grub_ext2_dir): Mask out the filetype part of the mode member of
the inode.
Add support for UFS version 1 and 2. Add support for the minix
filesystem version 1 and 2, both the variants with 14 and 30 long
filenames.
* conf/i386-pc.rmk (grub_setup_SOURCES): Add fs/ufs.c and
fs/minix.c.
(grub_emu_SOURCES): Likewise.
(pkgdata_MODULES): Add ufs.mod and minix.mod.
(ufs_mod_SOURCES): New variable.
(ufs_mod_CFLAGS): Likewise.
(minix_mod_SOURCES): Likewise.
(minix_mod_CFLAGS): Likewise.
* conf/powerpc-ieee1275.rmk (grub_emu_SOURCES): Add fs/ufs.c and
fs/minix.c.
(grubof_SOURCES): Likewise.
* fs/ufs.c: New file.
* fs/minix.c: New file.
* include/grub/fs.h (grub_ufs_init): New prototype.
(grub_ufs_fini): Likewise.
(grub_minix_init): Likewise.
(grub_minix_fini): Likewise.
* util/grub-emu.c (main): Initialize and deinitialize UFS and
minix fs.
All symbols prefixed with PUPA_ and pupa_ are renamed to GRUB_
and grub_, respectively. Because the conversion is trivial and
mechanical, I omit the details here. Please refer to the CVS
if you need more information.
Add support for the newworld apple macintosh (PPC). This has been
tested on the powerbook 2000 only. It only adds support for
generic ieee1275 functions, console and disk support. This should
be easy to port to other architectures with support for Open
Firmware.
* configure.ac: Accept the powerpc as host_cpu. In the case of
the powerpc cpu set the host_vendor to ieee1275. Make sure the i386
specific tests are only executed while building for the i386.
Inverse test for crosscompile.
* genmk.rb (Utility): Allow assembler files.
* normal/cmdline.c (pupa_tab_complete): Reset pupa_errno.
* conf/powerpc-ieee1275.rmk: New file.
* disk/powerpc/ieee1275/ofdisk.c: Likewise.
* disk/powerpc/ieee1275/partition.c: Likewise.
* include/pupa/powerpc/ieee1275/biosdisk.h: Likewise.
* include/pupa/powerpc/ieee1275/console.h: Likewise.
* include/pupa/powerpc/ieee1275/partition.h: Likewise.
* include/pupa/powerpc/ieee1275/time.h: Likewise.
* include/pupa/powerpc/ieee1275/util/biosdisk.h: Likewise.
* include/pupa/powerpc/ieee1275/multiboot.h: Likewise.
* include/pupa/powerpc/ieee1275/loader.h
* include/pupa/powerpc/setjmp.h: Likewise.
* include/pupa/powerpc/types.h: Likewise.
* kern/powerpc/ieee1275/init.c: Likewise.
* kern/powerpc/ieee1275/openfw.c: Likewise.
* term/powerpc/ieee1275/ofconsole.c: Likewise.
These files were written by Johan Rydberg
(jrydberg@night.trouble.net) and I only modified them slightly.
* boot/powerpc/ieee1275/cmain.c: New file.
* boot/powerpc/ieee1275/crt0.S: Likewise.
* boot/powerpc/ieee1275/ieee1275.c: Likewise.
* include/pupa/powerpc/ieee1275/ieee1275.h: Likewise.
* commands/boot.c: New file.
* commands/cat.c: Likewise.
* commands/cmp.c: Likewise.
* commands/ls.c: Likewise.
* commands/terminal.c: Likewise.
* normal/command.c: Include <pupa/env.h> and <pupa/dl.h>.
(pupa_register_command): Changed interface to match the new
argument parser.
(pupa_command_execute): Changed (almost rewritten) so it uses
pupa_split_command. Added support for setting variables using the
syntax `foo=bar'.
(rescue_command): Changed to work with the new argument parser.
(terminal_command): Moved from here to commands/terminal.c.
(set_command): New function.
(unset_command): New function.
(insmod_command): New function.
(rmmod_command): New function.
(lsmod_command): New function.
(pupa_command_init): Don't initialize the command terminal
anymore. Initialize the commands set, unset, insmod, rmmod and
lsmod.
* conf/i386-pc.rmk (kernel_img_SOURCES): Add kern/env.c.
(kernel_img_HEADERS): Add arg.h and env.h.
(pupa_mkimage_LDFLAGS): Add kern/env.c.
(pupa_emu_SOURCES): Add kern/env.c, commands/ls.c,
commands/terminal.c commands/boot.c commands/cmp.c commands/cat.c,
normal/arg.c.
(pkgdata_MODULES): Add ls.mod, boot.mod, cmp.mod, cat.mod and
terminal.mod.
(normal_mod_SOURCES): Add normal/arg.c and normal/arg.c.
(boot_mod_SOURCES): New variable.
(terminal_mod_SOURCES): Likewise.
(ls_mod_SOURCES): Likewise.
(cmp_mod_SOURCES): Likewise.
(cat_mod_SOURCES): Likewise.
* normal/arg.c: New file.
* kern/env.c: Likewise.
* include/pupa/arg.h: Likewise.
* include/pupa/env.h: Likewise.
* font/manager.c (font_command): Changed to match argument parsing
interface changes.
(PUPA_MOD_INIT): Likewise.
* hello/hello.c (pupa_cmd_hello): Likewise.
(PUPA_MOD_INIT): Likewise.
* include/pupa/disk.h: Include <pupa/device.h>.
(pupa_print_partinfo): New prototype.
* include/pupa/dl.h (pupa_dl_set_prefix): Prototype removed.
(pupa_dl_get_prefix): Likewise.
* include/pupa/misc.h: Include <pupa/err.h>.
(pupa_isgraph): New prototype.
(pupa_isdigit): Likewise.
(pupa_split_cmdline): Likewise.
* include/pupa/normal.h: Include <pupa/arg.h>.
(pupa_command): Changed the prototype of the member `func' to
match the argument parsing interface. Added member `options'.
(pupa_register_command): Updated to match function.
(pupa_arg_parse): New prototype.
(pupa_hello_init) [PUPA_UTIL]: New prototype.
(pupa_hello_fini) [PUPA_UTIL]: Likewise.
(pupa_ls_init) [PUPA_UTIL]: Likewise.
(pupa_ls_fini) [PUPA_UTIL]: Likewise.
(pupa_cat_init) [PUPA_UTIL]: Likewise.
(pupa_cat_fini) [PUPA_UTIL]: Likewise.
(pupa_boot_init) [PUPA_UTIL]: Likewise.
(pupa_boot_fini) [PUPA_UTIL]: Likewise.
(pupa_cmp_init) [PUPA_UTIL]: Likewise.
(pupa_cmp_fini) [PUPA_UTIL]: Likewise.
(pupa_terminal_init) [PUPA_UTIL]: Likewise.
(pupa_terminal_fini) [PUPA_UTIL]: Likewise.
* kern/disk.c: Include <pupa/file.h>.
(pupa_print_partinfo): New function.
* kern/dl.c: Include <pupa/env.h>.
(pupa_dl_dir): Variable removed.
(pupa_dl_load): Use the environment variable `prefix' instead of
the variable pupa_dl_dir.
(pupa_dl_set_prefix): Function removed.
(pupa_dl_get_prefix): Likewise.
* kern/i386/pc/init.c: Include <pupa/env.h>.
(pupa_machine_init): Use the environment variable `prefix' instead of
using pupa_dl_set_prefix to set the prefix.
* kern/main.c: Include <pupa/env.h>.
(pupa_set_root_dev): Use the environment variable `prefix' instead of
using pupa_dl_get_prefix to get the prefix.
* kern/misc.c: Include <pupa/env.h>.
(pupa_isdigit): New function.
(pupa_isgraph): Likewise.
(pupa_ftoa): Likewise.
(pupa_vsprintf): Added support for printing values of the type
`double'. Make it possible to format variable output when using
formatting like `%1.2%f'.
(pupa_split_cmdline): New function.
* kern/rescue.c: Include <pupa/env.h>.
(next_word): Removed function.
(pupa_rescue_cmd_prefix): Likewise.
(pupa_rescue_cmd_set): New function.
(pupa_rescue_cmd_unset): New function.
(pupa_enter_rescue_mode): Use the `pupa_split_cmdline' function to
split the command line instead of splitting it here. Added
support for setting variables using the syntax `foo=bar'. Don't
initialize the prefix command anymore. Initialized the set and
unset commands.
* normal/cmdline.c: Include <pupa/env.h>.
(pupa_tab_complete): Added prototypes for print_simple_completion,
print_partition_completion, add_completion, iterate_commands,
iterate_dev, iterate_part and iterate_dir. Moved code to print
partition information from here to kern/disk.c.
(pupa_cmdline_run): Don't check if the funtion exists anymore.
* normal/main.c: Include <pupa/env.h>.
(pupa_rescue_cmd_normal): Use the environment variable `prefix'
instead of using pupa_dl_get_prefix to get the prefix.
* term/i386/pc/vga.c: Include <pupa/arg.h>.
(check_vga_mem): Cast pointers to `void *' to silence a gcc
warning.
(pupa_vga_putchar) [! DEBUG_VGA]: Removed for this case.
(pupa_vga_setcolor): Declare unused variables with `__attribute__
((unused))' to silence a gcc warning.
(pupa_vga_setcolor): Likewise.
(debug_command): Changed to match argument parsing
interface changes.
* util/pupa-emu.c: Include <pupa/env.h>.
(options): Added 0's for unused fields to silence a gcc warning.
(argp): Likewise.
(main): Use the environment variable `prefix' instead of using
pupa_dl_set_prefix to set the prefix. Initialize the commands ls,
boot, cmp, cat and terminal. Finish the commands boot, cmp, cat
and terminal.
* util/i386/pc/getroot.c: Include <pupa/i386/pc/util/biosdisk.h>.
* util/misc.c: Include <malloc.h>.
(pupa_malloc): Rewritten so errors are correctly reported.
(pupa_realloc): Likewise.
(pupa_memalign): Likewise.
(pupa_mm_init_region): Declare unused variables with
`__attribute__ ((unused))' to silence a gcc warning.
* normal/i386/setjmp.S: Remove tab at the end of the file to
silence a gcc warning.
* loader/i386/pc/linux.c (pupa_rescue_cmd_initrd): Declare unused
variables with `__attribute__ ((unused))' to silence a gcc
warning.
* loader/i386/pc/multiboot.c (pupa_multiboot_unload): Make the
local variable i unsigned to silence a gcc warning.
* kern/term.c: Include <pupa/misc.h>.
(pupa_more_lines): New variable.
(pupa_more): Likewise.
(pupa_putcode): When the pager is active pause at the end of every
screen.
(pupa_set_more): New function.
* include/pupa/term.h (pupa_set_more): New prototype.
Now this project is GRUB 2 rather than PUPA. The location of
the CVS repository was moved to GRUB's.
* configure.ac: Use bug-grub as the reporting address.
Use GRUB instead of PUPA.
Change the version number to 1.90.
* 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.
