2007-10-31 Robert Millan <rmh@aybabtu.com>
* configure.ac: Add `i386-linuxbios' to the list of supported targets. * conf/i386-linuxbios.rmk: New file. * kern/i386/pc/hardware.c: Likewise. * term/i386/pc/at_keyboard.c: Likewise. * term/i386/pc/vga_text.c: Likewise. * include/grub/i386/linuxbios/boot.h: Likewise. * include/grub/i386/linuxbios/console.h: Likewise. * include/grub/i386/linuxbios/init.h: Likewise. * include/grub/i386/linuxbios/kernel.h: Likewise. * include/grub/i386/linuxbios/loader.h: Likewise. * include/grub/i386/linuxbios/memory.h: Likewise. * include/grub/i386/linuxbios/serial.h: Likewise. * include/grub/i386/linuxbios/time.h: Likewise. * kern/i386/linuxbios/init.c: Likewise. * kern/i386/linuxbios/startup.S: Likewise. * kern/i386/linuxbios/table.c: Likewise.
This commit is contained in:
robertmh
parent
e911ecc1c2
commit
ca25d8f0c1
19 changed files with 6147 additions and 3373 deletions
186
kern/i386/linuxbios/init.c
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186
kern/i386/linuxbios/init.c
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/kernel.h>
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#include <grub/mm.h>
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#include <grub/machine/time.h>
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#include <grub/machine/init.h>
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#include <grub/machine/memory.h>
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#include <grub/machine/console.h>
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#include <grub/machine/kernel.h>
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#include <grub/types.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/misc.h>
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#include <grub/loader.h>
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#include <grub/env.h>
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#include <grub/cache.h>
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#include <grub/time.h>
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#include <grub/symbol.h>
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#include <grub/cpu/io.h>
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#define GRUB_FLOPPY_REG_DIGITAL_OUTPUT 0x3f2
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extern char _start[];
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extern char _end[];
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grub_addr_t grub_os_area_addr;
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grub_size_t grub_os_area_size;
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grub_size_t grub_lower_mem, grub_upper_mem;
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/* FIXME: we need interrupts to do this right */
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static grub_uint32_t grub_time_tics = 0;
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grub_uint32_t
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grub_get_rtc (void)
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{
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return grub_time_tics;
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}
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/* Stop the floppy drive from spinning, so that other software is
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jumped to with a known state. */
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void
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grub_stop_floppy (void)
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{
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grub_outb (0, GRUB_FLOPPY_REG_DIGITAL_OUTPUT);
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}
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void
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grub_millisleep (grub_uint32_t ms __attribute__ ((unused)))
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{
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}
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void
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grub_exit ()
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{
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grub_printf ("grub_exit() is not implemented.\n");
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grub_stop ();
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}
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void
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grub_reboot ()
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{
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grub_printf ("grub_reboot() is not implemented.\n");
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grub_stop ();
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}
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void
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grub_halt (int no_apm __attribute__ ((unused)))
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{
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grub_printf ("grub_halt() is not implemented.\n");
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grub_stop ();
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}
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void
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grub_arch_sync_caches (void *address __attribute__ ((unused)),
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grub_size_t len __attribute__ ((unused)))
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{
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}
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static char *
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make_install_device (void)
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{
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return NULL;
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}
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void
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grub_machine_init (void)
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{
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/* Initialize the console as early as possible. */
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grub_console_init ();
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grub_lower_mem = GRUB_MEMORY_MACHINE_LOWER_USABLE;
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grub_upper_mem = 0;
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auto int heap_init (mem_region_t);
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int heap_init (mem_region_t mem_region)
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{
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grub_uint64_t addr = mem_region->addr;
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grub_uint64_t size = mem_region->size;
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#if GRUB_CPU_SIZEOF_VOID_P == 4
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/* Restrict ourselves to 32-bit memory space. */
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if (addr > ULONG_MAX)
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{
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grub_upper_mem = ULONG_MAX;
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return 0;
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}
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if (addr + size > ULONG_MAX)
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size = ULONG_MAX - addr;
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#endif
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grub_upper_mem = grub_max (grub_upper_mem, addr + size);
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if (mem_region->type != GRUB_LINUXBIOS_MEMORY_AVAILABLE)
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return 0;
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/* Avoid the lower memory. */
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if (addr < GRUB_MEMORY_MACHINE_LOWER_SIZE)
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{
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if (addr + size <= GRUB_MEMORY_MACHINE_LOWER_SIZE)
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return 0;
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else
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{
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size -= GRUB_MEMORY_MACHINE_LOWER_SIZE - addr;
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addr = GRUB_MEMORY_MACHINE_LOWER_SIZE;
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}
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}
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if (addr == GRUB_MEMORY_MACHINE_UPPER_START
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|| (addr >= GRUB_MEMORY_MACHINE_LOWER_SIZE
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&& addr <= GRUB_MEMORY_MACHINE_UPPER_START
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&& (addr + size > GRUB_MEMORY_MACHINE_UPPER_START)))
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{
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grub_size_t quarter = size >> 2;
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grub_os_area_addr = addr;
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grub_os_area_size = size - quarter;
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grub_mm_init_region ((void *) (grub_os_area_addr + grub_os_area_size),
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quarter);
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}
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else
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grub_mm_init_region ((void *) addr, (grub_size_t) size);
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return 0;
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}
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grub_available_iterate (heap_init);
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/* This variable indicates size, not offset. */
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grub_upper_mem -= GRUB_MEMORY_MACHINE_UPPER_START;
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}
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void
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grub_machine_set_prefix (void)
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{
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/* Initialize the prefix. */
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grub_env_set ("prefix", make_install_device ());
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}
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void
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grub_machine_fini (void)
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{
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grub_console_fini ();
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}
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/* Return the end of the core image. */
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grub_addr_t
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grub_arch_modules_addr (void)
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{
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return ALIGN_UP(_end, GRUB_MOD_ALIGN);
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}
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77
kern/i386/linuxbios/startup.S
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77
kern/i386/linuxbios/startup.S
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@ -0,0 +1,77 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define ASM_FILE 1
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#include <grub/symbol.h>
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#include <grub/machine/memory.h>
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#include <grub/cpu/linux.h>
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#include <multiboot.h>
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#include <multiboot2.h>
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/*
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* Note: GRUB is compiled with the options -mrtd and -mregparm=3.
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* So the first three arguments are passed in %eax, %edx, and %ecx,
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* respectively, and if a function has a fixed number of arguments
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* and the number if greater than three, the function must return
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* with "ret $N" where N is ((the number of arguments) - 3) * 4.
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*/
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.file "startup.S"
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.text
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.globl start, _start
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#if 0
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/*
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* Support for booting GRUB from a Multiboot boot loader (e.g. GRUB itself).
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*/
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multiboot_header:
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/* magic */
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.long 0x1BADB002
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/* flags */
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.long 0
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/* checksum */
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.long -0x1BADB002
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#endif
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start:
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_start:
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/* initialize the stack */
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movl $GRUB_MEMORY_MACHINE_PROT_STACK, %esp
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/* jump to the main body of C code */
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jmp EXT_C(grub_main)
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/*
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* This call is special... it never returns... in fact it should simply
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* hang at this point!
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*/
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FUNCTION(grub_stop)
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hlt
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jmp EXT_C(grub_stop)
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/*
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* prot_to_real and associated structures (but NOT real_to_prot, that is
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* only needed for BIOS gates).
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*/
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#include "../realmode.S"
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/*
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* Routines needed by Linux and Multiboot loaders.
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*/
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#include "../loader.S"
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69
kern/i386/linuxbios/table.c
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69
kern/i386/linuxbios/table.c
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@ -0,0 +1,69 @@
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2007 Free Software Foundation, Inc.
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*
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* GRUB 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 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/machine/memory.h>
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#include <grub/types.h>
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#include <grub/err.h>
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static grub_err_t
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grub_linuxbios_table_iterate (grub_linuxbios_table_header_t table_header,
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int (*hook) (grub_linuxbios_table_item_t))
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{
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grub_linuxbios_table_item_t table_item;
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if (grub_memcmp (table_header->signature, "LBIO", 4))
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grub_fatal ("Could not find LinuxBIOS table\n");
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table_item =
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(grub_linuxbios_table_item_t) ((long) table_header +
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(long) table_header->size);
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for (; table_item->size;
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table_item = (grub_linuxbios_table_item_t) ((long) table_item + (long) table_item->size))
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if (hook (table_item))
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return 1;
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return 0;
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}
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grub_err_t
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grub_available_iterate (int (*hook) (mem_region_t))
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{
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mem_region_t mem_region;
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auto int iterate_linuxbios_table (grub_linuxbios_table_item_t);
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int iterate_linuxbios_table (grub_linuxbios_table_item_t table_item)
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{
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if (table_item->tag != GRUB_LINUXBIOS_MEMBER_MEMORY)
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return 0;
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mem_region =
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(mem_region_t) ((long) table_item +
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sizeof (struct grub_linuxbios_table_item));
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for (; (long) mem_region < (long) table_item + (long) table_item->size;
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mem_region++)
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if (hook (mem_region))
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return 1;
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return 0;
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}
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grub_linuxbios_table_iterate (GRUB_MEMORY_MACHINE_LINUXBIOS_TABLE_ADDR,
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iterate_linuxbios_table);
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return 0;
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}
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