changelog

Linux启动程序grub的源码分析与实现；

	
	* stage2/disk_io.c (set_bootdev): Copy the partition information
	here. Now this function can call rawread, so it can fail.
	(boot_part_offset): Removed.

	* stage2/builtins.c (boot_func): Don't copy the partition
	information here.
	(real_root_func): Check ERRNUM after calling set_bootdev.

2002-07-04  Yoshinori K. Okuji  <[e-mail]>

	* docs/grub.texi (Reporting bugs): Use the group name (i.e.
	grub) instead of the group id (i.e. 68) for the URL of the BTS.

2002-07-03  Yoshinori K. Okuji  <[e-mail]>

	* stage2/serial.c [!GRUB_UTIL] (inb): Added a delay into this
	function itself.
	[!GRUB_UTIL] (outb): Likewise.
	[!GRUB_UTIL] (serial_hw_put): Increase the timeout value, and
	don't call serial_hw_delay explicitly any longer.
	(fill_input_buf): Increase the maximum number of retries, reset
	the counter to zero after getting a valid character, and don't
	call serial_hw_delay explicitly any longer.

2002-07-03  Yoshinori K. Okuji  <[e-mail]>

	* stage2/serial.c [!GRUB_UTIL] (serial_hw_fetch): Fixed a typo.
	Reported by Ilguiz Latypov.

2002-07-01  Yoshinori K. Okuji <[e-mail]>

	* Makefile.am (AUTOMAKE_OPTIONS): New variable. Specify the
	required Automake version explicitly.
	
2002-06-30  Yoshinori K. Okuji <[e-mail]>

	* stage2/builtins.c [SUPPORT_SERIAL || SUPPORT_HERCULES]
	(terminal_func): Set CURRENT_TERM to each of selected terminals
	before calling grub_printf, and restore CURRENT_TERM after it.
	Reported by Ilguiz Latypov.
	Prepend a carriage return to the prompting message, because it
	is ugly that the same messages fulfill the whole screen.

2002-06-30  Yoshinori K. Okuji  <[e-mail]>

	* stage2/serial.c [!GRUB_UTIL] (serial_hw_fetch): Fixed the
	conditional statement. Reported by Ilguiz Latypov.
	
2002-06-24  Yoshinori K. Okuji  <[e-mail]>

	* MAINTENANCE: New file.
	
2002-06-15  Yoshinori K. Okuji  <[e-mail]>

	* stage2/disk_io.c [SUPPORT_NETBOOT] (GRUB): Defined.
	[SUPPORT_NETBOOT]: Include etherboot.h.
	[!STAGE1_5] (print_completions) [SUPPORT_NETBOOT]: When
	completing a disk name, if NETWORK_READY is true, add "nd" as a
	completion.
	
2002-06-15  Yoshinori K. Okuji  <[e-mail]>

	* stage2/fsys_xfs.c (le32): Don't use bswap, but use xchgb and
	roll, because 386 doesn't have bswap. Reported by Frode Vatvedt
	Fjeld <[e-mail]>.
	
2002-06-12  Yoshinori K. Okuji  <[e-mail]>

	* netboot/main.c (ifconfig): If GW is specified, clear out the
	ARP entry for the gateway. If SVR is specified, clear out the
	ARP entry for the server. Reported by Uwe Dannowski
	<[e-mail]>.
	
2002-06-12  Yoshinori K. Okuji  <[e-mail]>

	* util/grub-md5-crypt.in: Prompt to retype a password, and check
	if the passwords matches. Suggested by Matt Perry
	<[e-mail]>.
	Also, don't use Perl any longer, because *BSD's sh and GNU
	support ``read -r'', and GRUB doesn't support any other
	operating system anyway.
	
2002-06-12  Yoshinori K. Okuji  <[e-mail]>

	The terminal handling code is rewritten radically.
	
	* stage2/console.c: New file.
	* stage2/term.h: Likewise.
	
	* stage2/Makefile.am (noinst_HEADERS): Added term.h.
	(libgrub_a_SOURCES): Added serial.c.
	(pre_stage2_exec_SOURCES): Added console.c.

	* stage2/asm.S (console_putchar): Rewritten from scratch.
	[!STAGE1_5] (translation_table): New variable.
	[!STAGE1_5] (translate_keycode): New function.
	[!STAGE1_5] (console_getkey): Call translate_keycode.
	[!STAGE1_5] (console_checkkey): Likewise.
	[!STAGE1_5] (nocursor): Renamed to ...
	[!STAGE1_5] (console_nocursor): ... this.
	[!STAGE1_5] (console_set_attrib): Removed.

	* stage2/builtins.c: Include term.h.
	(terminal): Removed.
	(normal_color): Likewise.
	(highlight_color): Likewise.
	(cat_func): Display a question mark when a non-printable
	character was read.
	(terminal_func): Rewritten almost from scratch.

	* stage2/char_io.c: Include term.h.
	[!STAGE1_5] (auto_fill): Removed.
	[!STAGE1_5] (term_table): New variable.
	[!STAGE1_5] (current_term): Likewise.
	[!STAGE1_5] (real_get_cmdline): New function. The code was
	stolen from the previous version of get_cmdline.
	[!STAGE1_5] (get_cmdline): Rewritten from scratch.
	[!STAGE1_5] (translate_keycode): Removed.
	[!STAGE1_5] (getkey): Rewritten from scratch.
	[!STAGE1_5] (checkkey): Likewise.
	(grub_putchar): Likewise.
	[!STAGE1_5] (gotoxy): Likewise.
	[!STAGE1_5] (getxy): Likewise.
	[!STAGE1_5] (cls): Likewise.
	[!STAGE1_5] (nocursor): New function.
	[SUPPORT_SERIAL] (serial_getxy): Removed.
	[SUPPORT_SERIAL] (serial_gotoxy): Likewise.
	[SUPPORT_SERIAL] (serial_cls): Likewise.
	[SUPPORT_SERIAL] (serial_getxy): Likewise.
	[!STAGE1_5] (set_attrib): Likewise.

	* stage2/cmdline.c (init_cmdline): Set COUNT_LINES to -1.

	* stage2/common.c [!STAGE1_5] (err_list): Removed
	ERR_NEED_SERIAL and added ERR_DEV_NEED_INIT.

	* stage2/hercules.c: Rewritten almost from scratch.
	* stage2/hercules.h (herc_putchar): Removed.
	(herc_cls): Likewise.
	(herc_getxy): Likewise.
	(herc_gotoxy): Likewise.
	(herc_set_attrib): Likewise.

	* stage2/serial.c: Rewritten almost from scratch.
	* stage2/serial.h: Likewise.

	* stage2/shared.h [GRUB_UTIL] (DISP_UL): Set to the same value
	as VGA's.
	[GRUB_UTIL] (DISP_UR): Likewise.
	[GRUB_UTIL] (DISP_LL): Likewise.
	[GRUB_UTIL] (DISP_LR): Likewise.
	[GRUB_UTIL] (DISP_HORIZ): Likewise.
	[GRUB_UTIL] (DISP_VERT): Likewise.
	[GRUB_UTIL] (DISP_LEFT): Likewise.
	[GRUB_UTIL] (DISP_RIGHT): Likewise.
	[GRUB_UTIL] (DISP_UP): Likewise.
	[GRUB_UTIL] (DISP_DOWN): Likewise.
	(grub_error_t): Removed ERR_NEED_SERIAL.
	Added ERR_DEV_NEED_INIT.
	(normal_color): Removed.
	(highlight_color): Likewise.
	(console_cls): Removed, because this is declared in term.h.
	(console_getxy): Likewise.
	(console_gotoxy): Likewise.
	(console_putchar): Likewise.
	(console_getkey): Likewise.
	(console_checkkey): Likewise.
	(console_set_attrib): Removed.
	(set_attrib): Likewise.
	[GRUB_UTIL] (nocursor): Declared.
	(auto_fill): Removed.
	(terminal): Likewise.
	(TERMINAL_CONSOLE): Likewise.
	(TERMINAL_SERIAL): Likewise.
	(TERMINAL_HERCULES): Likewise.
	(TERMINAL_DUMB): Likewise.
	(translate_keycode): Likewise.

	* stage2/stage2.c: Include term.h.
	(print_entry): Rewritten from scratch.
	(print_entries): Likewise.
	(print_border): Likewise.
	(set_line): Removed.
	(set_line_normal): Likewise.
	(set_line_highlight): Likewise.
	
	* grub/Makefile.am (AM_CFLAGS): Added -DSUPPORT_HERCULES=1.
	
	* grub/asmstub.c: Don't include hercules.h. Include term.h.
	(console_current_color): New variable.
	(console_translate_key): New function.
	(console_checkkey): Rewritten from scratch.
	(console_getkey): Likewise.
	(console_putchar): Likewise.
	(console_set_attrib): Removed.
	(console_highlight): New function.
	(console_setcolor): Likewise.
	(console_nocursor): Likewise.
	(serial_getkey): Removed.
	(serial_checkkey): Likewise.
	(serial_putchar): Likewise.
	(serial_exists): Likewise.
	(serial_get_port): Likewise.
	(serial_init): Likewise.
	(serial_hw_fetch): New function.
	(serial_hw_put): Likewise.
	(serial_hw_delay): Likewise.
	(serial_hw_get_port): Likewise.
	(serial_hw_init): Likewise.
	(set_serial_device): Renamed to ...
	(serial_set_device): ... this.
	(herc_putchar): Renamed to ...
	(hercules_putchar): ... this.
	(herc_cls): Renamed to ...
	(hercules_cls): ... this.
	(herc_getxy): Renamed to ...
	(hercules_getxy): ... this.
	(herc_gotoxy): Renamed to ...
	(hercules_gotoxy): ... this.
	(hercules_highlight): New function.
	(hercules_setcolor): Likewise.
	(hercules_nocursor): Likewise.
	(herc_set_attrib): Removed.

	* grub/main.c: Include term.h.
	(main): If USE_CURSES is false, set CURRENT_TERM->FLAGS to
	TERM_NO_EDIT | TERM_DUMB. TERMINAL is not used any longer.
	
2002-06-01  Yoshinori K. Okuji  <[e-mail]>

	* docs/grub.texi (FAQ): Removed. See the GNU GRUB FAQ on the web
	instead.
	
2002-05-31  Yoshinori K. Okuji  <[e-mail]>

	* docs/grub.texi (Reporting bugs): Recommend using the BTS on
	Savannah rather than the list bug-grub.
	
2002-05-25  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c (boot_func): Load the boot partition
	information, only if the address of the boot partition entry is
	set appropriately.
	(real_root_func): If ATTEMPT_MOUNT is false, call open_partition
	and if successful, call set_bootdev, to set the offset of the
	boot partition and the address of the boot paetition entry.
	IF ATTEMPT_MOUNT is false, don't set BOOTDEV. The BSD evil hack
	is useless with the command "rootnoverify" anyway.
	* stage2/disk_io.c (boot_part_addr): Initialized with zero
	explicitly, to emphasize that it is invalid.
	
2002-05-24  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c (real_root_func): New function.
	(root_func): Just call real_root_func.
	(rootnoverify_func): Likewise.
	
2002-05-23  Yoshinori K. Okuji  <[e-mail]>

	* configure.in (AM_INIT_AUTOMAKE): Changed the version number to
	0.93.
	
2002-05-23  Yoshinori K. Okuji  <[e-mail]>

	Define the behavior of the boot loader when the load end address
	and the bss end address are zero in the Multiboot Specification,
	and add the support into GRUB. I've modified a patch from Yuri
	Zaporogets <[e-mail]>.
	
	* stage2/boot.c (load_image): In the case of Multiboot a.out
	kludge, set the load end address to the load address plus the
	size of the OS image file, if it is zero. Similarly, set the bss
	end address to the load end address, if it is zero.
	
	* util/mbchk.c (check_multiboot): Don't check if the load
	address is greater than or equal to the load end address, if the
	load end address is zero. Don't check if the load end address is
	greater than the bss end address, if the bss end address is
	zero. And, don't check if the load end address is less than or
	equal to the entry address, if the load end address is zero.
	
	* docs/multiboot.texi (The address fields of Multiboot header):
	Added descriptions about the behavior of the boot loader when
	LOAD_END_ADDR is zero and BSS_END_ADDR is zero.
	
2002-05-22  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c (boot_func): If DEBUG is true, print
	BOOT_DRIVE and BOOT_PART_OFFSET.
	Don't set ERRNUM after rawread failed, because rawread should
	set ERRNUM itself.
	
2002-05-20  Yoshinori K. Okuji  <[e-mail]>

	* lib/device.c (read_device_map): Show an error message and exit
	abnormally, if MAP[DRIVE] has already been filled.
	* util/grub-install.in: If there is any dulicated entry, print
	an error message and exit abnormally.
	
2002-05-20  Yoshinori K. Okuji  <[e-mail]>

	* lib/device.c: Don't include linux/hdreg.h, linux/major.h,
	or linux/kdev_t.h.
	[__linux__] (HDIO_GETGEO): Defined.
	[__linux__] (hd_geometry): Likewise.
	[__linux__] (FLOPPY_MAJOR): Likewise.
	[__linux__] (MINORBITS): Likewise.
	[__linux__] (MAJOR): Likewise.
	
2002-05-08  Yoshinori K. Okuji  <[e-mail]>

	* netboot/fsys_tftp.c (tftp_read): Don't call buf_fill unless
	SIZE is positive.
	
2002-05-08  Yoshinori K. Okuji  <[e-mail]>

	* netboot/etherboot.h (ETH_MAX_MTU): Because some DHCP/BOOTP
	servers don't treat the maximum length the same as Etherboot,
	subtract the size of an IP header and that of an UDP header.
	
2002-04-30  Yoshinori K. Okuji  <[e-mail]>

	From Jean-Jacques Michel <[e-mail]>:
	* stage2/boot.c (load_image): For Linux, check if DATA_LEN is
	greater than MULTIBOOT_SEARCH. If that's true, read the rest
	after copying data already read in BUFFER.
	
2002-04-30  Yoshinori K. Okuji  <[e-mail]>

	* stage2/boot.c (load_image): For Linux, don't check if the
	length of protected mode code is greater than or equal to the
	expected length minus 16. Instead, just check if no error
	occurred. That was problematic, because memdisk has no protected
	mode code. Also, I don't see what the magic number 16 was for.
	
2002-04-29  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c [SUPPORT_SERIAL] (terminal_func): Added a
	new option ``--silent''. This suppresses messages, if specified.
	
2002-04-29  Yoshinori K. Okuji  <[e-mail]>

	* config.guess: New upstream version.
	* config.sub: Likewise.
	
2002-04-20  Yoshinori K. Okuji  <[e-mail]>

	* netboot/config.c (PCI_NIC) [INCLUDE_DAVICOM]: Fix typos.
	Reported by Julien Perrot <[e-mail]>.
	
2002-04-17  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c [SUPPORT_SERIAL] (terminal_func): Set
	COUNT_LINES to -1, to disable the pager.
	
2002-04-16  Yoshinori K. Okuji  <[e-mail]>

	* docs/grub.texi (Obtaining and Building GRUB): Update the link
	to the binutils site.

2002-04-06  Pavel Roskin  <[e-mail]>

	* util/grub-install.in: Fix hardcoded /dev/hda1.

2002-04-06  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c [GRUB_UTIL] (dump_func): New function.
	[GRUB_UTIL] (builtin_dump): New variable.
	(builtin_table) [GRUB_UTIL]: Added a pointer to BUILTIN_DUMP.
	* util/grub-install.in: Make sure that GRUB reads the same
	images as the host operating system by comparing the result of
	running the command "dump" with the contents of the OS file.
	
2002-04-04  Yoshinori K. Okuji  <[e-mail]>

	* stage2/builtins.c (setup_func): Don't embed a drive number, if
	unnecessary.
	
2002-03-29  Yoshinori K. Okuji  <[e-mail]>