mirror of
https://git.savannah.gnu.org/git/grub.git
synced 2026-10-22 07:12:39 +00:00
2010-01-01 Robert Millan <rmh.grub@aybabtu.com>
Use more standard `doc' directory. * docs: Rename to ... * doc: ... this. Update all users. * doc/multiboot.texi: Fix an obsolete reference to `docs' directory in GRUB distribution.
This commit is contained in:
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@@ -0,0 +1,34 @@
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info_TEXINFOS = multiboot.texi
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EXAMPLES = boot.S kernel.c multiboot.h
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multiboot_TEXINFOS = boot.S.texi kernel.c.texi multiboot.h.texi
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SRC2TEXI = src2texi
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noinst_SCRIPTS = $(SRC2TEXI)
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EXTRA_PROGRAMS = kernel
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# The example kernel is built if you specify --enable-example-kernel.
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if BUILD_EXAMPLE_KERNEL
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noinst_PROGRAMS = kernel
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kernel_SOURCES = $(EXAMPLES)
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kernel_CFLAGS = -fno-builtin -nostdinc -O -g -Wall \
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-imacros $(top_builddir)/config.h
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kernel_LDFLAGS = -nostdlib -Wl,-N -Wl,-Ttext -Wl,100000 -Wl,--build-id=none
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boot.o: multiboot.h
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endif
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EXTRA_DIST = $(man_MANS) $(noinst_SCRIPTS) \
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$(EXAMPLES) $(multiboot_TEXINFOS)
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CLEANFILES = $(noinst_PROGRAMS)
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# Cancel the rule %.texi -> %. This rule may confuse make to determine
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# the dependecies.
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.texi:
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%.c.texi: %.c $(srcdir)/$(SRC2TEXI)
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$(SHELL) $(srcdir)/$(SRC2TEXI) $(srcdir) $< $@
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%.h.texi: %.h $(srcdir)/$(SRC2TEXI)
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$(SHELL) $(srcdir)/$(SRC2TEXI) $(srcdir) $< $@
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%.S.texi: %.S $(srcdir)/$(SRC2TEXI)
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$(SHELL) $(srcdir)/$(SRC2TEXI) $(srcdir) $< $@
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+96
@@ -0,0 +1,96 @@
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/* boot.S - bootstrap the kernel */
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/* Copyright (C) 1999, 2001 Free Software Foundation, Inc.
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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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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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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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#define ASM_FILE 1
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#include <multiboot.h>
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/* C symbol format. HAVE_ASM_USCORE is defined by configure. */
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#ifdef HAVE_ASM_USCORE
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# define EXT_C(sym) _ ## sym
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#else
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# define EXT_C(sym) sym
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#endif
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/* The size of our stack (16KB). */
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#define STACK_SIZE 0x4000
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/* The flags for the Multiboot header. */
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#ifdef __ELF__
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# define MULTIBOOT_HEADER_FLAGS 0x00000003
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#else
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# define MULTIBOOT_HEADER_FLAGS 0x00010003
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#endif
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.text
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.globl start, _start
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start:
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_start:
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jmp multiboot_entry
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/* Align 32 bits boundary. */
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.align 4
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/* Multiboot header. */
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multiboot_header:
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/* magic */
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.long MULTIBOOT_HEADER_MAGIC
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/* flags */
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.long MULTIBOOT_HEADER_FLAGS
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/* checksum */
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.long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
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#ifndef __ELF__
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/* header_addr */
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.long multiboot_header
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/* load_addr */
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.long _start
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/* load_end_addr */
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.long _edata
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/* bss_end_addr */
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.long _end
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/* entry_addr */
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.long multiboot_entry
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#endif /* ! __ELF__ */
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multiboot_entry:
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/* Initialize the stack pointer. */
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movl $(stack + STACK_SIZE), %esp
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/* Reset EFLAGS. */
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pushl $0
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popf
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/* Push the pointer to the Multiboot information structure. */
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pushl %ebx
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/* Push the magic value. */
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pushl %eax
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/* Now enter the C main function... */
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call EXT_C(cmain)
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/* Halt. */
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pushl $halt_message
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call EXT_C(printf)
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loop: hlt
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jmp loop
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halt_message:
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.asciz "Halted."
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/* Our stack area. */
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.comm stack, STACK_SIZE
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+284
@@ -0,0 +1,284 @@
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/* kernel.c - the C part of the kernel */
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/* Copyright (C) 1999 Free Software Foundation, Inc.
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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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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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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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#include <multiboot.h>
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/* Macros. */
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/* Check if the bit BIT in FLAGS is set. */
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#define CHECK_FLAG(flags,bit) ((flags) & (1 << (bit)))
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/* Some screen stuff. */
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/* The number of columns. */
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#define COLUMNS 80
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/* The number of lines. */
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#define LINES 24
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/* The attribute of an character. */
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#define ATTRIBUTE 7
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/* The video memory address. */
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#define VIDEO 0xB8000
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/* Variables. */
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/* Save the X position. */
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static int xpos;
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/* Save the Y position. */
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static int ypos;
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/* Point to the video memory. */
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static volatile unsigned char *video;
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/* Forward declarations. */
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void cmain (unsigned long magic, unsigned long addr);
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static void cls (void);
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static void itoa (char *buf, int base, int d);
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static void putchar (int c);
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void printf (const char *format, ...);
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/* Check if MAGIC is valid and print the Multiboot information structure
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pointed by ADDR. */
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void
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cmain (unsigned long magic, unsigned long addr)
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{
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multiboot_info_t *mbi;
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/* Clear the screen. */
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cls ();
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/* Am I booted by a Multiboot-compliant boot loader? */
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if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
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{
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printf ("Invalid magic number: 0x%x\n", (unsigned) magic);
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return;
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}
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/* Set MBI to the address of the Multiboot information structure. */
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mbi = (multiboot_info_t *) addr;
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/* Print out the flags. */
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printf ("flags = 0x%x\n", (unsigned) mbi->flags);
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/* Are mem_* valid? */
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if (CHECK_FLAG (mbi->flags, 0))
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printf ("mem_lower = %uKB, mem_upper = %uKB\n",
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(unsigned) mbi->mem_lower, (unsigned) mbi->mem_upper);
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/* Is boot_device valid? */
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if (CHECK_FLAG (mbi->flags, 1))
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printf ("boot_device = 0x%x\n", (unsigned) mbi->boot_device);
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/* Is the command line passed? */
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if (CHECK_FLAG (mbi->flags, 2))
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printf ("cmdline = %s\n", (char *) mbi->cmdline);
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/* Are mods_* valid? */
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if (CHECK_FLAG (mbi->flags, 3))
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{
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multiboot_module_t *mod;
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int i;
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printf ("mods_count = %d, mods_addr = 0x%x\n",
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(int) mbi->mods_count, (int) mbi->mods_addr);
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for (i = 0, mod = (multiboot_module_t *) mbi->mods_addr;
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i < mbi->mods_count;
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i++, mod++)
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printf (" mod_start = 0x%x, mod_end = 0x%x, cmdline = %s\n",
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(unsigned) mod->mod_start,
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(unsigned) mod->mod_end,
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(char *) mod->cmdline);
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}
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/* Bits 4 and 5 are mutually exclusive! */
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if (CHECK_FLAG (mbi->flags, 4) && CHECK_FLAG (mbi->flags, 5))
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{
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printf ("Both bits 4 and 5 are set.\n");
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return;
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}
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/* Is the symbol table of a.out valid? */
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if (CHECK_FLAG (mbi->flags, 4))
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{
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multiboot_aout_symbol_table_t *multiboot_aout_sym = &(mbi->u.aout_sym);
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printf ("multiboot_aout_symbol_table: tabsize = 0x%0x, "
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"strsize = 0x%x, addr = 0x%x\n",
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(unsigned) multiboot_aout_sym->tabsize,
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(unsigned) multiboot_aout_sym->strsize,
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(unsigned) multiboot_aout_sym->addr);
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}
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/* Is the section header table of ELF valid? */
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if (CHECK_FLAG (mbi->flags, 5))
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{
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multiboot_elf_section_header_table_t *multiboot_elf_sec = &(mbi->u.elf_sec);
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printf ("multiboot_elf_sec: num = %u, size = 0x%x,"
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" addr = 0x%x, shndx = 0x%x\n",
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(unsigned) multiboot_elf_sec->num, (unsigned) multiboot_elf_sec->size,
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(unsigned) multiboot_elf_sec->addr, (unsigned) multiboot_elf_sec->shndx);
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}
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/* Are mmap_* valid? */
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if (CHECK_FLAG (mbi->flags, 6))
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{
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multiboot_memory_map_t *mmap;
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printf ("mmap_addr = 0x%x, mmap_length = 0x%x\n",
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(unsigned) mbi->mmap_addr, (unsigned) mbi->mmap_length);
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for (mmap = (multiboot_memory_map_t *) mbi->mmap_addr;
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(unsigned long) mmap < mbi->mmap_addr + mbi->mmap_length;
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mmap = (multiboot_memory_map_t *) ((unsigned long) mmap
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+ mmap->size + sizeof (mmap->size)))
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printf (" size = 0x%x, base_addr = 0x%x%x,"
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" length = 0x%x%x, type = 0x%x\n",
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(unsigned) mmap->size,
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mmap->addr >> 32,
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mmap->addr & 0xffffffff,
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mmap->len >> 32,
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mmap->len & 0xffffffff,
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(unsigned) mmap->type);
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}
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}
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/* Clear the screen and initialize VIDEO, XPOS and YPOS. */
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static void
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cls (void)
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{
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int i;
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video = (unsigned char *) VIDEO;
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for (i = 0; i < COLUMNS * LINES * 2; i++)
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*(video + i) = 0;
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xpos = 0;
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ypos = 0;
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}
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/* Convert the integer D to a string and save the string in BUF. If
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BASE is equal to 'd', interpret that D is decimal, and if BASE is
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equal to 'x', interpret that D is hexadecimal. */
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static void
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itoa (char *buf, int base, int d)
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{
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char *p = buf;
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char *p1, *p2;
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unsigned long ud = d;
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int divisor = 10;
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/* If %d is specified and D is minus, put `-' in the head. */
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if (base == 'd' && d < 0)
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{
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*p++ = '-';
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buf++;
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ud = -d;
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}
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else if (base == 'x')
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divisor = 16;
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/* Divide UD by DIVISOR until UD == 0. */
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||||
do
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||||
{
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||||
int remainder = ud % divisor;
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||||
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||||
*p++ = (remainder < 10) ? remainder + '0' : remainder + 'a' - 10;
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||||
}
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while (ud /= divisor);
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/* Terminate BUF. */
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||||
*p = 0;
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/* Reverse BUF. */
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p1 = buf;
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p2 = p - 1;
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||||
while (p1 < p2)
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||||
{
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char tmp = *p1;
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*p1 = *p2;
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*p2 = tmp;
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p1++;
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p2--;
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}
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}
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|
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/* Put the character C on the screen. */
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static void
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putchar (int c)
|
||||
{
|
||||
if (c == '\n' || c == '\r')
|
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{
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||||
newline:
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||||
xpos = 0;
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||||
ypos++;
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||||
if (ypos >= LINES)
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ypos = 0;
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return;
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}
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*(video + (xpos + ypos * COLUMNS) * 2) = c & 0xFF;
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*(video + (xpos + ypos * COLUMNS) * 2 + 1) = ATTRIBUTE;
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xpos++;
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if (xpos >= COLUMNS)
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goto newline;
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}
|
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|
||||
/* Format a string and print it on the screen, just like the libc
|
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function printf. */
|
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void
|
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printf (const char *format, ...)
|
||||
{
|
||||
char **arg = (char **) &format;
|
||||
int c;
|
||||
char buf[20];
|
||||
|
||||
arg++;
|
||||
|
||||
while ((c = *format++) != 0)
|
||||
{
|
||||
if (c != '%')
|
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putchar (c);
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||||
else
|
||||
{
|
||||
char *p;
|
||||
|
||||
c = *format++;
|
||||
switch (c)
|
||||
{
|
||||
case 'd':
|
||||
case 'u':
|
||||
case 'x':
|
||||
itoa (buf, c, *((int *) arg++));
|
||||
p = buf;
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||||
goto string;
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||||
break;
|
||||
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||||
case 's':
|
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p = *arg++;
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||||
if (! p)
|
||||
p = "(null)";
|
||||
|
||||
string:
|
||||
while (*p)
|
||||
putchar (*p++);
|
||||
break;
|
||||
|
||||
default:
|
||||
putchar (*((int *) arg++));
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
+223
@@ -0,0 +1,223 @@
|
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/* multiboot.h - Multiboot header file. */
|
||||
/* Copyright (C) 1999,2003,2007,2008,2009 Free Software Foundation, Inc.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to
|
||||
* deal in the Software without restriction, including without limitation the
|
||||
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
||||
* sell copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL ANY
|
||||
* DEVELOPER OR DISTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
||||
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
|
||||
* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef MULTIBOOT_HEADER
|
||||
#define MULTIBOOT_HEADER 1
|
||||
|
||||
/* How many bytes from the start of the file we search for the header. */
|
||||
#define MULTIBOOT_SEARCH 8192
|
||||
|
||||
/* The magic field should contain this. */
|
||||
#define MULTIBOOT_HEADER_MAGIC 0x1BADB002
|
||||
|
||||
/* This should be in %eax. */
|
||||
#define MULTIBOOT_BOOTLOADER_MAGIC 0x2BADB002
|
||||
|
||||
/* The bits in the required part of flags field we don't support. */
|
||||
#define MULTIBOOT_UNSUPPORTED 0x0000fffc
|
||||
|
||||
/* Alignment of multiboot modules. */
|
||||
#define MULTIBOOT_MOD_ALIGN 0x00001000
|
||||
|
||||
/* Alignment of the multiboot info structure. */
|
||||
#define MULTIBOOT_INFO_ALIGN 0x00000004
|
||||
|
||||
/* Flags set in the 'flags' member of the multiboot header. */
|
||||
|
||||
/* Align all boot modules on i386 page (4KB) boundaries. */
|
||||
#define MULTIBOOT_PAGE_ALIGN 0x00000001
|
||||
|
||||
/* Must pass memory information to OS. */
|
||||
#define MULTIBOOT_MEMORY_INFO 0x00000002
|
||||
|
||||
/* Must pass video information to OS. */
|
||||
#define MULTIBOOT_VIDEO_MODE 0x00000004
|
||||
|
||||
/* This flag indicates the use of the address fields in the header. */
|
||||
#define MULTIBOOT_AOUT_KLUDGE 0x00010000
|
||||
|
||||
/* Flags to be set in the 'flags' member of the multiboot info structure. */
|
||||
|
||||
/* is there basic lower/upper memory information? */
|
||||
#define MULTIBOOT_INFO_MEMORY 0x00000001
|
||||
/* is there a boot device set? */
|
||||
#define MULTIBOOT_INFO_BOOTDEV 0x00000002
|
||||
/* is the command-line defined? */
|
||||
#define MULTIBOOT_INFO_CMDLINE 0x00000004
|
||||
/* are there modules to do something with? */
|
||||
#define MULTIBOOT_INFO_MODS 0x00000008
|
||||
|
||||
/* These next two are mutually exclusive */
|
||||
|
||||
/* is there a symbol table loaded? */
|
||||
#define MULTIBOOT_INFO_AOUT_SYMS 0x00000010
|
||||
/* is there an ELF section header table? */
|
||||
#define MULTIBOOT_INFO_ELF_SHDR 0X00000020
|
||||
|
||||
/* is there a full memory map? */
|
||||
#define MULTIBOOT_INFO_MEM_MAP 0x00000040
|
||||
|
||||
/* Is there drive info? */
|
||||
#define MULTIBOOT_INFO_DRIVE_INFO 0x00000080
|
||||
|
||||
/* Is there a config table? */
|
||||
#define MULTIBOOT_INFO_CONFIG_TABLE 0x00000100
|
||||
|
||||
/* Is there a boot loader name? */
|
||||
#define MULTIBOOT_INFO_BOOT_LOADER_NAME 0x00000200
|
||||
|
||||
/* Is there a APM table? */
|
||||
#define MULTIBOOT_INFO_APM_TABLE 0x00000400
|
||||
|
||||
/* Is there video information? */
|
||||
#define MULTIBOOT_INFO_VIDEO_INFO 0x00000800
|
||||
|
||||
#ifndef ASM_FILE
|
||||
|
||||
typedef unsigned short multiboot_uint16_t;
|
||||
typedef unsigned int multiboot_uint32_t;
|
||||
typedef unsigned long long multiboot_uint64_t;
|
||||
|
||||
struct multiboot_header
|
||||
{
|
||||
/* Must be MULTIBOOT_MAGIC - see above. */
|
||||
multiboot_uint32_t magic;
|
||||
|
||||
/* Feature flags. */
|
||||
multiboot_uint32_t flags;
|
||||
|
||||
/* The above fields plus this one must equal 0 mod 2^32. */
|
||||
multiboot_uint32_t checksum;
|
||||
|
||||
/* These are only valid if MULTIBOOT_AOUT_KLUDGE is set. */
|
||||
multiboot_uint32_t header_addr;
|
||||
multiboot_uint32_t load_addr;
|
||||
multiboot_uint32_t load_end_addr;
|
||||
multiboot_uint32_t bss_end_addr;
|
||||
multiboot_uint32_t entry_addr;
|
||||
|
||||
/* These are only valid if MULTIBOOT_VIDEO_MODE is set. */
|
||||
multiboot_uint32_t mode_type;
|
||||
multiboot_uint32_t width;
|
||||
multiboot_uint32_t height;
|
||||
multiboot_uint32_t depth;
|
||||
};
|
||||
|
||||
/* The symbol table for a.out. */
|
||||
struct multiboot_aout_symbol_table
|
||||
{
|
||||
multiboot_uint32_t tabsize;
|
||||
multiboot_uint32_t strsize;
|
||||
multiboot_uint32_t addr;
|
||||
multiboot_uint32_t reserved;
|
||||
};
|
||||
typedef struct multiboot_aout_symbol_table multiboot_aout_symbol_table_t;
|
||||
|
||||
/* The section header table for ELF. */
|
||||
struct multiboot_elf_section_header_table
|
||||
{
|
||||
multiboot_uint32_t num;
|
||||
multiboot_uint32_t size;
|
||||
multiboot_uint32_t addr;
|
||||
multiboot_uint32_t shndx;
|
||||
};
|
||||
typedef struct multiboot_elf_section_header_table multiboot_elf_section_header_table_t;
|
||||
|
||||
struct multiboot_info
|
||||
{
|
||||
/* Multiboot info version number */
|
||||
multiboot_uint32_t flags;
|
||||
|
||||
/* Available memory from BIOS */
|
||||
multiboot_uint32_t mem_lower;
|
||||
multiboot_uint32_t mem_upper;
|
||||
|
||||
/* "root" partition */
|
||||
multiboot_uint32_t boot_device;
|
||||
|
||||
/* Kernel command line */
|
||||
multiboot_uint32_t cmdline;
|
||||
|
||||
/* Boot-Module list */
|
||||
multiboot_uint32_t mods_count;
|
||||
multiboot_uint32_t mods_addr;
|
||||
|
||||
union
|
||||
{
|
||||
multiboot_aout_symbol_table_t aout_sym;
|
||||
multiboot_elf_section_header_table_t elf_sec;
|
||||
} u;
|
||||
|
||||
/* Memory Mapping buffer */
|
||||
multiboot_uint32_t mmap_length;
|
||||
multiboot_uint32_t mmap_addr;
|
||||
|
||||
/* Drive Info buffer */
|
||||
multiboot_uint32_t drives_length;
|
||||
multiboot_uint32_t drives_addr;
|
||||
|
||||
/* ROM configuration table */
|
||||
multiboot_uint32_t config_table;
|
||||
|
||||
/* Boot Loader Name */
|
||||
multiboot_uint32_t boot_loader_name;
|
||||
|
||||
/* APM table */
|
||||
multiboot_uint32_t apm_table;
|
||||
|
||||
/* Video */
|
||||
multiboot_uint32_t vbe_control_info;
|
||||
multiboot_uint32_t vbe_mode_info;
|
||||
multiboot_uint16_t vbe_mode;
|
||||
multiboot_uint16_t vbe_interface_seg;
|
||||
multiboot_uint16_t vbe_interface_off;
|
||||
multiboot_uint16_t vbe_interface_len;
|
||||
};
|
||||
typedef struct multiboot_info multiboot_info_t;
|
||||
|
||||
struct multiboot_mmap_entry
|
||||
{
|
||||
multiboot_uint32_t size;
|
||||
multiboot_uint64_t addr;
|
||||
multiboot_uint64_t len;
|
||||
#define MULTIBOOT_MEMORY_AVAILABLE 1
|
||||
#define MULTIBOOT_MEMORY_RESERVED 2
|
||||
multiboot_uint32_t type;
|
||||
} __attribute__((packed));
|
||||
typedef struct multiboot_mmap_entry multiboot_memory_map_t;
|
||||
|
||||
struct multiboot_mod_list
|
||||
{
|
||||
/* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
|
||||
multiboot_uint32_t mod_start;
|
||||
multiboot_uint32_t mod_end;
|
||||
|
||||
/* Module command line */
|
||||
multiboot_uint32_t cmdline;
|
||||
|
||||
/* padding to take it to 16 bytes (must be zero) */
|
||||
multiboot_uint32_t pad;
|
||||
};
|
||||
typedef struct multiboot_mod_list multiboot_module_t;
|
||||
|
||||
#endif /* ! ASM_FILE */
|
||||
|
||||
#endif /* ! MULTIBOOT_HEADER */
|
||||
+1229
File diff suppressed because it is too large.
Load diff
@@ -0,0 +1,16 @@
|
||||
#! /bin/sh
|
||||
#
|
||||
# Convert a source file to a TeXinfo file. Stolen from glibc.
|
||||
#
|
||||
# Usage: src2texi SRCDIR SRC TEXI
|
||||
|
||||
dir=$1
|
||||
src=`basename $2`
|
||||
texi=`basename $3`
|
||||
|
||||
sed -e 's,[{}],@&,g' \
|
||||
-e 's,/\*\(@.*\)\*/,\1,g' \
|
||||
-e 's,/\* *,/* @r{,g' -e 's, *\*/,} */,' \
|
||||
-e 's/\(@[a-z][a-z]*\)@{\([^}]*\)@}/\1{\2}/g' \
|
||||
${dir}/${src} | expand > ${texi}.new
|
||||
mv -f ${texi}.new ${dir}/${texi}
|
||||
Reference in new issue
Block a user