139 lines
3.4 KiB
C
139 lines
3.4 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <grub/kernel.h>
|
|
#include <grub/mm.h>
|
|
#include <grub/machine/time.h>
|
|
#include <grub/machine/init.h>
|
|
#include <grub/machine/memory.h>
|
|
#include <grub/machine/console.h>
|
|
#include <grub/types.h>
|
|
#include <grub/err.h>
|
|
#include <grub/dl.h>
|
|
#include <grub/misc.h>
|
|
#include <grub/loader.h>
|
|
#include <grub/env.h>
|
|
#include <grub/cache.h>
|
|
#include <grub/time.h>
|
|
#include <grub/symbol.h>
|
|
#include <grub/cpu/io.h>
|
|
#include <grub/cpu/tsc.h>
|
|
#ifdef GRUB_MACHINE_QEMU
|
|
#include <grub/machine/kernel.h>
|
|
#endif
|
|
|
|
#define GRUB_FLOPPY_REG_DIGITAL_OUTPUT 0x3f2
|
|
|
|
extern char _start[];
|
|
extern char _end[];
|
|
|
|
grub_uint32_t
|
|
grub_get_rtc (void)
|
|
{
|
|
grub_fatal ("grub_get_rtc() is not implemented.\n");
|
|
}
|
|
|
|
/* Stop the floppy drive from spinning, so that other software is
|
|
jumped to with a known state. */
|
|
void
|
|
grub_stop_floppy (void)
|
|
{
|
|
grub_outb (0, GRUB_FLOPPY_REG_DIGITAL_OUTPUT);
|
|
}
|
|
|
|
void
|
|
grub_exit (void)
|
|
{
|
|
/* We can't use grub_fatal() in this function. This would create an infinite
|
|
loop, since grub_fatal() calls grub_abort() which in turn calls grub_exit(). */
|
|
while (1)
|
|
grub_cpu_idle ();
|
|
}
|
|
|
|
void
|
|
grub_machine_init (void)
|
|
{
|
|
#ifdef GRUB_MACHINE_QEMU
|
|
grub_qemu_init_cirrus ();
|
|
#endif
|
|
/* Initialize the console as early as possible. */
|
|
grub_vga_text_init ();
|
|
|
|
auto int NESTED_FUNC_ATTR heap_init (grub_uint64_t, grub_uint64_t, grub_uint32_t);
|
|
int NESTED_FUNC_ATTR heap_init (grub_uint64_t addr, grub_uint64_t size, grub_uint32_t type)
|
|
{
|
|
#if GRUB_CPU_SIZEOF_VOID_P == 4
|
|
/* Restrict ourselves to 32-bit memory space. */
|
|
if (addr > GRUB_ULONG_MAX)
|
|
return 0;
|
|
if (addr + size > GRUB_ULONG_MAX)
|
|
size = GRUB_ULONG_MAX - addr;
|
|
#endif
|
|
|
|
if (type != GRUB_MACHINE_MEMORY_AVAILABLE)
|
|
return 0;
|
|
|
|
/* Avoid the lower memory. */
|
|
if (addr < GRUB_MEMORY_MACHINE_LOWER_SIZE)
|
|
{
|
|
if (addr + size <= GRUB_MEMORY_MACHINE_LOWER_SIZE)
|
|
return 0;
|
|
else
|
|
{
|
|
size -= GRUB_MEMORY_MACHINE_LOWER_SIZE - addr;
|
|
addr = GRUB_MEMORY_MACHINE_LOWER_SIZE;
|
|
}
|
|
}
|
|
|
|
grub_mm_init_region ((void *) (grub_addr_t) addr, (grub_size_t) size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if defined (GRUB_MACHINE_MULTIBOOT) || defined (GRUB_MACHINE_QEMU)
|
|
grub_machine_mmap_init ();
|
|
#endif
|
|
grub_machine_mmap_iterate (heap_init);
|
|
|
|
grub_tsc_init ();
|
|
}
|
|
|
|
void
|
|
grub_machine_set_prefix (void)
|
|
{
|
|
/* Initialize the prefix. */
|
|
grub_env_set ("prefix", grub_prefix);
|
|
}
|
|
|
|
void
|
|
grub_machine_fini (void)
|
|
{
|
|
grub_vga_text_fini ();
|
|
grub_stop_floppy ();
|
|
}
|
|
|
|
/* Return the end of the core image. */
|
|
grub_addr_t
|
|
grub_arch_modules_addr (void)
|
|
{
|
|
#ifdef GRUB_MACHINE_QEMU
|
|
return grub_core_entry_addr + grub_kernel_image_size;
|
|
#else
|
|
return ALIGN_UP((grub_addr_t) _end, GRUB_KERNEL_MACHINE_MOD_ALIGN);
|
|
#endif
|
|
}
|