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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009,2013 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/memory.h>
#include <grub/machine/console.h>
#include <grub/machine/kernel.h>
#include <grub/offsets.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/video.h>
#include <grub/coreboot/lbio.h>
#include <grub/fdtbus.h>
extern grub_uint8_t _start[];
extern grub_uint8_t _end[];
extern grub_uint8_t _edata[];
grub_addr_t start_of_ram = ~(grub_addr_t)0;
void __attribute__ ((noreturn))
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 ();
}
static grub_uint64_t modend;
static int have_memory = 0;
/* Helper for grub_machine_init. */
static int
heap_init (grub_uint64_t addr, grub_uint64_t size, grub_memory_type_t type,
void *data __attribute__ ((unused)))
{
grub_uint64_t begin = addr, end = addr + size;
#if GRUB_CPU_SIZEOF_VOID_P == 4
/* Restrict ourselves to 32-bit memory space. */
if (begin > GRUB_ULONG_MAX)
return 0;
if (end > GRUB_ULONG_MAX)
end = GRUB_ULONG_MAX;
#endif
if (start_of_ram > begin)
start_of_ram = begin;
if (type != GRUB_MEMORY_AVAILABLE)
return 0;
if (modend && begin < modend)
{
if (begin < (grub_addr_t)_start)
{
grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) ((grub_addr_t)_start - begin));
have_memory = 1;
}
begin = modend;
}
/* Avoid DMA problems. */
if (end >= 0xfe000000)
end = 0xfe000000;
if (end <= begin)
return 0;
grub_mm_init_region ((void *) (grub_addr_t) begin, (grub_size_t) (end - begin));
have_memory = 1;
return 0;
}
void
grub_machine_init (void)
{
struct grub_module_header *header;
void *dtb = 0;
grub_size_t dtb_size = 0;
modend = grub_modules_get_end ();
grub_video_coreboot_fb_early_init ();
grub_machine_mmap_iterate (heap_init, NULL);
if (!have_memory)
grub_fatal ("No memory found");
grub_video_coreboot_fb_late_init ();
grub_font_init ();
grub_gfxterm_init ();
FOR_MODULES (header)
if (header->type == OBJ_TYPE_DTB)
{
char *dtb_orig_addr, *dtb_copy;
dtb_orig_addr = (char *) header + sizeof (struct grub_module_header);
dtb_size = header->size - sizeof (struct grub_module_header);
dtb = dtb_copy = grub_malloc (dtb_size);
grub_memmove (dtb_copy, dtb_orig_addr, dtb_size);
break;
}
if (!dtb)
grub_fatal ("No DTB found");
grub_fdtbus_init (dtb, dtb_size);
grub_rk3288_spi_init ();
grub_machine_timer_init ();
grub_cros_init ();
grub_pl050_init ();
}
void
grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
char **path __attribute__ ((unused)))
{
}
void
grub_machine_fini (int flags __attribute__ ((unused)))
{
}
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