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hw/loongarch: Init efi_initrd table 

The efi_system_table adds a efi_initrd configuration table.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <20240426091551.2397867-8-gaosong@loongson.cn>
This commit is contained in:
Song Gao 2024-04-26 17:15:41 +08:00
parent 252b8e6899
commit 060685041c
2 changed files with 30 additions and 2 deletions
hw/loongarch
boot.c
include/hw/loongarch
boot.h

23
hw/loongarch/boot.c
View File

@ -15,6 +15,9 @@
#include "sysemu/reset.h"
#include "sysemu/qtest.h"
ram_addr_t initrd_offset;
uint64_t initrd_size;
static const unsigned int slave_boot_code[] = {
/* Configure reset ebase. */
0x0400302c, /* csrwr $t0, LOONGARCH_CSR_EENTRY */
@ -95,6 +98,21 @@ static void init_efi_boot_memmap(struct efi_system_table *systab,
}
}
static void init_efi_initrd_table(struct efi_system_table *systab,
void *p, void *start)
{
efi_guid_t tbl_guid = LINUX_EFI_INITRD_MEDIA_GUID;
struct efi_initrd *initrd_table = p;
/* efi_configuration_table 2 */
guidcpy(&systab->tables[1].guid, &tbl_guid);
systab->tables[1].table = (struct efi_configuration_table *)(p - start);
systab->nr_tables = 2;
initrd_table->base = initrd_offset;
initrd_table->size = initrd_size;
}
static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
{
void *bp_tables_start;
@ -118,6 +136,8 @@ static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
init_efi_boot_memmap(systab, p, start);
p += ROUND_UP(sizeof(struct efi_boot_memmap) +
sizeof(efi_memory_desc_t) * memmap_entries, 64 * KiB);
init_efi_initrd_table(systab, p, start);
p += ROUND_UP(sizeof(struct efi_initrd), 64 * KiB);
systab->tables = (struct efi_configuration_table *)(bp_tables_start - start);
}
@ -139,8 +159,7 @@ static uint64_t cpu_loongarch_virt_to_phys(void *opaque, uint64_t addr)
static int64_t load_kernel_info(struct loongarch_boot_info *info)
{
uint64_t kernel_entry, kernel_low, kernel_high, initrd_size;
ram_addr_t initrd_offset;
uint64_t kernel_entry, kernel_low, kernel_high;
ssize_t kernel_size;
kernel_size = load_elf(info->kernel_filename, NULL,

9
include/hw/loongarch/boot.h
View File

@ -30,6 +30,10 @@ typedef struct {
EFI_GUID(0x800f683f, 0xd08b, 0x423a, 0xa2, 0x93, \
0x96, 0x5c, 0x3c, 0x6f, 0xe2, 0xb4)
#define LINUX_EFI_INITRD_MEDIA_GUID \
EFI_GUID(0x5568e427, 0x68fc, 0x4f3d, 0xac, 0x74, \
0xca, 0x55, 0x52, 0x31, 0xcc, 0x68)
struct efi_config_table {
efi_guid_t guid;
uint64_t *ptr;
@ -83,6 +87,11 @@ struct efi_boot_memmap {
efi_memory_desc_t map[32];
};
struct efi_initrd {
uint64_t base;
uint64_t size;
};
struct loongarch_boot_info {
uint64_t ram_size;
const char *kernel_filename;