On 2024/3/8 上午12:48, Song Gao wrote:
> Add init_systab and set boot_info->a2
>
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> Message-Id: <20240301093839.663947-6-gaosong@loongson.cn>
> ---
> hw/loongarch/boot.c | 22 +++++++++++++++++
> include/hw/loongarch/boot.h | 48 +++++++++++++++++++++++++++++++++++++
> 2 files changed, 70 insertions(+)
>
> diff --git a/hw/loongarch/boot.c b/hw/loongarch/boot.c
> index ca65dfde07..1e31e2a59f 100644
> --- a/hw/loongarch/boot.c
> +++ b/hw/loongarch/boot.c
> @@ -63,6 +63,25 @@ static const unsigned int slave_boot_code[] = {
> 0x4c000020, /* jirl $r0,$r1,0 */
> };
>
> +static void init_systab(struct loongarch_boot_info *info, void *p, void *start)
> +{
> + struct efi_system_table *systab = p;
> +
> + info->a2 = (uint64_t)p - (uint64_t)start;
> +
> + systab->hdr.signature = EFI_SYSTEM_TABLE_SIGNATURE;
> + systab->hdr.revision = EFI_SPECIFICATION_VERSION;
> + systab->hdr.revision = sizeof(struct efi_system_table),
> + systab->fw_revision = FW_VERSION << 16 | FW_PATCHLEVEL << 8;
> + systab->runtime = 0;
> + systab->boottime = 0;
> + systab->nr_tables = 0;
> +
> + p += ROUND_UP(sizeof(struct efi_system_table), 64);
> +
> + systab->tables = p;
> +}
> +
> static void init_cmdline(struct loongarch_boot_info *info, void *p, void *start)
> {
> hwaddr cmdline_addr = (hwaddr)p - (hwaddr)start;
> @@ -135,6 +154,7 @@ static void reset_load_elf(void *opaque)
> if (cpu == LOONGARCH_CPU(first_cpu)) {
> env->gpr[4] = env->boot_info->a0;
> env->gpr[5] = env->boot_info->a1;
> + env->gpr[6] = env->boot_info->a2;
> }
> cpu_set_pc(CPU(cpu), env->elf_address);
> }
> @@ -182,6 +202,8 @@ static void init_boot_rom(struct loongarch_boot_info *info, void *p)
>
> init_cmdline(info, p, start);
> p += COMMAND_LINE_SIZE;
> +
> + init_systab(info, p, start);
> }
>
> static void loongarch_direct_kernel_boot(struct loongarch_boot_info *info)
> diff --git a/include/hw/loongarch/boot.h b/include/hw/loongarch/boot.h
> index 3275c1e295..65ad406f02 100644
> --- a/include/hw/loongarch/boot.h
> +++ b/include/hw/loongarch/boot.h
> @@ -8,6 +8,54 @@
> #ifndef HW_LOONGARCH_BOOT_H
> #define HW_LOONGARCH_BOOT_H
>
> +/* UEFI 2.10 */
> +#define EFI_SYSTEM_TABLE_SIGNATURE 0x5453595320494249
> +#define EFI_2_100_SYSTEM_TABLE_REVISION ((2<<16) | (100))
> +#define EFI_SPECIFICATION_VERSION EFI_SYSTEM_TABLE_REVISION
> +#define EFI_SYSTEM_TABLE_REVISION EFI_2_100_SYSTEM_TABLE_REVISION
> +
> +#define FW_VERSION 0x1
> +#define FW_PATCHLEVEL 0x0
> +
> +typedef struct {
> + uint8_t b[16];
> +} efi_guid_t __attribute__((aligned(8)));
> +
> +struct efi_config_table {
> + efi_guid_t guid;
> + uint64_t *ptr;
> + const char name[16];
> +};
> +
> +typedef struct {
> + uint64_t signature;
> + uint32_t revision;
> + uint32_t headersize;
> + uint32_t crc32;
> + uint32_t reserved;
> +} efi_table_hdr_t;
> +
> +struct efi_configuration_table {
> + efi_guid_t guid;
> + void *table;
> +};
> +
> +struct efi_system_table {
> + efi_table_hdr_t hdr;
> + uint64_t fw_vendor; /* physical addr of CHAR16 vendor string */
> + uint32_t fw_revision;
> + uint64_t con_in_handle;
> + uint64_t *con_in;
> + uint64_t con_out_handle;
> + uint64_t *con_out;
> + uint64_t stderr_handle;
> + uint64_t stderr_placeholder;
> + uint64_t *runtime;
> + uint64_t *boottime;
> + uint64_t nr_tables;
> + struct efi_configuration_table *tables;
> +};
> +
> struct loongarch_boot_info {
> uint64_t ram_size;
> const char *kernel_filename;
>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>