105 lines
1.9 KiB
C
105 lines
1.9 KiB
C
#include <grub/kernel.h>
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#include <grub/misc.h>
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#include <grub/env.h>
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#include <grub/time.h>
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/time.h>
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#include <grub/machine/memory.h>
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#include <grub/machine/kernel.h>
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#include <grub/machine/console.h>
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#include <grub/cpu/memory.h>
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#include <grub/memory.h>
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#include <grub/video.h>
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#include <grub/terminfo.h>
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#include <grub/keyboard_layouts.h>
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#include <grub/serial.h>
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#include <grub/loader.h>
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#include <grub/at_keyboard.h>
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static inline int
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probe_mem (grub_addr_t addr)
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{
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volatile grub_uint8_t *ptr = (grub_uint8_t *) (0xa0000000 | addr);
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grub_uint8_t c = *ptr;
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*ptr = 0xAA;
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if (*ptr != 0xAA)
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return 0;
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*ptr = 0x55;
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if (*ptr != 0x55)
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return 0;
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*ptr = c;
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return 1;
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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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grub_addr_t modend;
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if (grub_arch_memsize == 0)
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{
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int i;
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for (i = 27; i >= 0; i--)
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if (probe_mem (grub_arch_memsize | (1 << i)))
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grub_arch_memsize |= (1 << i);
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grub_arch_memsize++;
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}
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/* FIXME: measure this. */
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grub_arch_cpuclock = 64000000;
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modend = grub_modules_get_end ();
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grub_mm_init_region ((void *) modend, grub_arch_memsize
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- (modend - GRUB_ARCH_LOWMEMVSTART));
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grub_install_get_time_ms (grub_rtc_get_time_ms);
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grub_keylayouts_init ();
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grub_at_keyboard_init ();
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grub_qemu_init_cirrus ();
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grub_vga_text_init ();
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grub_terminfo_init ();
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grub_serial_init ();
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grub_boot_init ();
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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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}
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void
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grub_exit (void)
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{
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grub_halt ();
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}
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void
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grub_halt (void)
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{
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grub_outl (42, 0xbfbf0004);
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while (1);
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}
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grub_err_t
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grub_machine_mmap_iterate (grub_memory_hook_t hook, void *hook_data)
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{
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hook (0, grub_arch_memsize, GRUB_MEMORY_AVAILABLE, hook_data);
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return GRUB_ERR_NONE;
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}
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void
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grub_machine_get_bootlocation (char **device __attribute__ ((unused)),
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char **path __attribute__ ((unused)))
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{
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}
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extern char _end[];
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grub_addr_t grub_modbase = (grub_addr_t) _end;
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