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x86: efi: Update efi_get_next_mem_desc() to avoid needing a map

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At present this function requires a pointer to struct efi_entry_memmap
but the only field used in there is the desc_size. We want to be able
to use it from the app, so update it to use desc_size directly.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-01-04 03:51:11 -07:00 committed by Heinrich Schuchardt
parent 866e2ac5aa
commit ce1dc0cc17
3 changed files with 24 additions and 22 deletions
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8
arch/x86/cpu/efi/payload.c
View File

@ -51,7 +51,7 @@ ulong board_get_usable_ram_top(ulong total_size)
end = (struct efi_mem_desc *)((ulong)map + size);
desc = map->desc;
for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
for (; desc < end; desc = efi_get_next_mem_desc(desc, map->desc_size)) {
if (desc->type != EFI_CONVENTIONAL_MEMORY ||
desc->physical_start >= 1ULL << 32)
continue;
@ -89,7 +89,7 @@ int dram_init(void)
end = (struct efi_mem_desc *)((ulong)map + size);
gd->ram_size = 0;
desc = map->desc;
for (; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
for (; desc < end; desc = efi_get_next_mem_desc(desc, map->desc_size)) {
if (desc->type < EFI_MMAP_IO)
gd->ram_size += desc->num_pages << EFI_PAGE_SHIFT;
}
@ -114,7 +114,7 @@ int dram_init_banksize(void)
desc = map->desc;
for (num_banks = 0;
desc < end && num_banks < CONFIG_NR_DRAM_BANKS;
desc = efi_get_next_mem_desc(map, desc)) {
desc = efi_get_next_mem_desc(desc, map->desc_size)) {
/*
* We only use conventional memory and ignore
* anything less than 1MB.
@ -197,7 +197,7 @@ unsigned int install_e820_map(unsigned int max_entries,
end = (struct efi_mem_desc *)((ulong)map + size);
for (desc = map->desc; desc < end;
desc = efi_get_next_mem_desc(map, desc)) {
desc = efi_get_next_mem_desc(desc, map->desc_size)) {
if (desc->num_pages == 0)
continue;

34
cmd/efi.c
View File

@ -75,16 +75,17 @@ static int h_cmp_entry(const void *v1, const void *v2)
/**
* efi_build_mem_table() - make a sorted copy of the memory table
*
* @map: Pointer to EFI memory map table
* @desc_base: Pointer to EFI memory map table
* @size: Size of table in bytes
* @desc_size: Size of each @desc_base record
* @skip_bs: True to skip boot-time memory and merge it with conventional
* memory. This will significantly reduce the number of table
* entries.
* Return: pointer to the new table. It should be freed with free() by the
* caller.
*/
static void *efi_build_mem_table(struct efi_entry_memmap *map, int size,
bool skip_bs)
static void *efi_build_mem_table(struct efi_mem_desc *desc_base, int size,
int desc_size, bool skip_bs)
{
struct efi_mem_desc *desc, *end, *base, *dest, *prev;
int count;
@ -95,15 +96,16 @@ static void *efi_build_mem_table(struct efi_entry_memmap *map, int size,
debug("%s: Cannot allocate %#x bytes\n", __func__, size);
return NULL;
}
end = (struct efi_mem_desc *)((ulong)map + size);
count = ((ulong)end - (ulong)map->desc) / map->desc_size;
memcpy(base, map->desc, (ulong)end - (ulong)map->desc);
qsort(base, count, map->desc_size, h_cmp_entry);
end = (void *)desc_base + size;
count = ((ulong)end - (ulong)desc_base) / desc_size;
memcpy(base, desc_base, (ulong)end - (ulong)desc_base);
qsort(base, count, desc_size, h_cmp_entry);
prev = NULL;
addr = 0;
dest = base;
end = (struct efi_mem_desc *)((ulong)base + count * map->desc_size);
for (desc = base; desc < end; desc = efi_get_next_mem_desc(map, desc)) {
end = (struct efi_mem_desc *)((ulong)base + count * desc_size);
for (desc = base; desc < end;
desc = efi_get_next_mem_desc(desc, desc_size)) {
bool merge = true;
u32 type = desc->type;
@ -116,7 +118,7 @@ static void *efi_build_mem_table(struct efi_entry_memmap *map, int size,
if (skip_bs && is_boot_services(desc->type))
type = EFI_CONVENTIONAL_MEMORY;
memcpy(dest, desc, map->desc_size);
memcpy(dest, desc, desc_size);
dest->type = type;
if (!skip_bs || !prev)
merge = false;
@ -131,7 +133,7 @@ static void *efi_build_mem_table(struct efi_entry_memmap *map, int size,
prev->num_pages += desc->num_pages;
} else {
prev = dest;
dest = efi_get_next_mem_desc(map, dest);
dest = efi_get_next_mem_desc(dest, desc_size);
}
addr = desc->physical_start + (desc->num_pages <<
EFI_PAGE_SHIFT);
@ -143,8 +145,8 @@ static void *efi_build_mem_table(struct efi_entry_memmap *map, int size,
return base;
}
static void efi_print_mem_table(struct efi_entry_memmap *map,
struct efi_mem_desc *desc, bool skip_bs)
static void efi_print_mem_table(struct efi_mem_desc *desc, int desc_size,
bool skip_bs)
{
u64 attr_seen[ATTR_SEEN_MAX];
int attr_seen_count;
@ -158,7 +160,7 @@ static void efi_print_mem_table(struct efi_entry_memmap *map,
attr_seen_count = 0;
addr = 0;
for (upto = 0; desc->type != EFI_MAX_MEMORY_TYPE;
upto++, desc = efi_get_next_mem_desc(map, desc)) {
upto++, desc = efi_get_next_mem_desc(desc, desc_size)) {
const char *name;
u64 size;
@ -238,13 +240,13 @@ static int do_efi_mem(struct cmd_tbl *cmdtp, int flag, int argc,
goto done;
}
desc = efi_build_mem_table(map, size, skip_bs);
desc = efi_build_mem_table(map->desc, size, map->desc_size, skip_bs);
if (!desc) {
ret = -ENOMEM;
goto done;
}
efi_print_mem_table(map, desc, skip_bs);
efi_print_mem_table(desc, map->desc_size, skip_bs);
free(desc);
done:
if (ret)

4
include/efi.h
View File

@ -395,9 +395,9 @@ struct efi_entry_systable {
};
static inline struct efi_mem_desc *efi_get_next_mem_desc(
struct efi_entry_memmap *map, struct efi_mem_desc *desc)
struct efi_mem_desc *desc, int desc_size)
{
return (struct efi_mem_desc *)((ulong)desc + map->desc_size);
return (struct efi_mem_desc *)((ulong)desc + desc_size);
}
/**