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efi_loader: eliminate sandbox addresses 

Do not use the sandbox's virtual address space for the internal structures
of the memory map. This way we can eliminate a whole lot of unnecessary
conversions.

The only conversion remaining is the one when adding known memory.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Heinrich Schuchardt 2018-11-18 17:58:46 +01:00 committed by Alexander Graf
parent 5e2f039107
commit 49759743bf
1 changed files with 4 additions and 5 deletions
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9
lib/efi_loader/efi_memory.c
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@ -384,7 +384,7 @@ efi_status_t efi_allocate_pages(int type, int memory_type,
/* Reserve that map in our memory maps */
ret = efi_add_memory_map(addr, pages, memory_type, true);
if (ret == addr) {
*memory = (uintptr_t)map_sysmem(addr, len);
*memory = addr;
} else {
/* Map would overlap, bail out */
r = EFI_OUT_OF_RESOURCES;
@ -418,12 +418,11 @@ void *efi_alloc(uint64_t len, int memory_type)
efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages)
{
uint64_t r = 0;
uint64_t addr = map_to_sysmem((void *)(uintptr_t)memory);
r = efi_add_memory_map(addr, pages, EFI_CONVENTIONAL_MEMORY, false);
r = efi_add_memory_map(memory, pages, EFI_CONVENTIONAL_MEMORY, false);
/* Merging of adjacent free regions is missing */
if (r == addr)
if (r == memory)
return EFI_SUCCESS;
return EFI_NOT_FOUND;
@ -562,7 +561,7 @@ __weak void efi_add_known_memory(void)
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
u64 ram_end, ram_start, pages;
ram_start = gd->bd->bi_dram[i].start;
ram_start = (uintptr_t)map_sysmem(gd->bd->bi_dram[i].start, 0);
ram_end = ram_start + gd->bd->bi_dram[i].size;
/* Remove partial pages */