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First version of allocation from firmware

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-04-03 11:53:29 +02:00
parent accbdc88a5
commit 3a5768645c
5 changed files with 440 additions and 147 deletions
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46
include/grub/relocator_private.h
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@ -21,6 +21,7 @@
#include <grub/types.h>
#include <grub/err.h>
#include <grub/mm_private.h>
extern grub_size_t grub_relocator_align;
extern grub_size_t grub_relocator_forward_size;
@ -38,4 +39,49 @@ void grub_cpu_relocator_backward (void *rels, void *src, void *tgt,
grub_size_t size);
void grub_cpu_relocator_jumper (void *rels, grub_addr_t addr);
#ifdef GRUB_MACHINE_IEEE1275
#define GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS 1
#else
#define GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS 0
#endif
struct grub_relocator_mmap_event
{
enum {
IN_REG_START = 0,
IN_REG_END = 1,
REG_BEG_START = 2,
REG_BEG_END = REG_BEG_START | 1,
#if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
REG_FIRMWARE_START = 4,
REG_FIRMWARE_END = REG_FIRMWARE_START | 1,
/* To track the regions already in heap. */
FIRMWARE_BLOCK_START = 6,
FIRMWARE_BLOCK_END = FIRMWARE_BLOCK_START | 1,
#endif
COLLISION_START = 8,
COLLISION_END = COLLISION_START | 1
} type;
grub_addr_t pos;
union
{
struct
{
grub_mm_region_t reg;
grub_mm_header_t hancestor;
grub_mm_region_t *regancestor;
grub_mm_header_t head;
};
};
};
/* Return 0 on failure, 1 on success. The failure here
can be very time-expensive, so please make sure fill events is accurate. */
#if GRUB_RELOCATOR_HAVE_FIRMWARE_REQUESTS
int grub_relocator_firmware_alloc_region (grub_addr_t start, grub_size_t size);
unsigned grub_relocator_firmware_fill_events (struct grub_relocator_mmap_event *events);
unsigned grub_relocator_firmware_get_max_events (void);
void grub_relocator_firmware_free_region (grub_addr_t start, grub_size_t size);
#endif
#endif