diff options
| author | Simon Glass <sjg@chromium.org> | 2023-07-16 06:39:17 +0300 |
|---|---|---|
| committer | Bin Meng <bmeng@tinylab.org> | 2023-07-17 12:23:15 +0300 |
| commit | 085f8db6b98dfdd8c1707797003d677ce654904f (patch) | |
| tree | 26ba1e7ff0080bc9820a52627a199bfd31207b58 /lib/efi_loader | |
| parent | 92ccaf7d97b0fafd3f1b2095ac998c9bd30d8d87 (diff) | |
| download | u-boot-085f8db6b98dfdd8c1707797003d677ce654904f.tar.xz | |
efi: Use the installed ACPI tables
U-Boot sets up the ACPI tables during startup. Rather than creating a
new set, install the existing ones. Create a memory-map record to cover
the tables.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'lib/efi_loader')
| -rw-r--r-- | lib/efi_loader/efi_acpi.c | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/lib/efi_loader/efi_acpi.c b/lib/efi_loader/efi_acpi.c index 2ddc3502b5..f755af76f8 100644 --- a/lib/efi_loader/efi_acpi.c +++ b/lib/efi_loader/efi_acpi.c @@ -10,6 +10,9 @@ #include <log.h> #include <mapmem.h> #include <acpi/acpi_table.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID; @@ -20,26 +23,28 @@ static const efi_guid_t acpi_guid = EFI_ACPI_TABLE_GUID; */ efi_status_t efi_acpi_register(void) { - /* Map within the low 32 bits, to allow for 32bit ACPI tables */ - u64 acpi = U32_MAX; + ulong addr, start, end; efi_status_t ret; - ulong addr; - /* Reserve 64kiB page for ACPI */ - ret = efi_allocate_pages(EFI_ALLOCATE_MAX_ADDRESS, - EFI_ACPI_RECLAIM_MEMORY, 16, &acpi); + /* Mark space used for tables */ + start = ALIGN_DOWN(gd->arch.table_start, EFI_PAGE_MASK); + end = ALIGN(gd->arch.table_end, EFI_PAGE_MASK); + ret = efi_add_memory_map(start, end - start, EFI_ACPI_RECLAIM_MEMORY); if (ret != EFI_SUCCESS) return ret; + if (gd->arch.table_start_high) { + start = ALIGN_DOWN(gd->arch.table_start_high, EFI_PAGE_MASK); + end = ALIGN(gd->arch.table_end_high, EFI_PAGE_MASK); + ret = efi_add_memory_map(start, end - start, + EFI_ACPI_RECLAIM_MEMORY); + if (ret != EFI_SUCCESS) + return ret; + } - /* - * Generate ACPI tables - we know that efi_allocate_pages() returns - * a 4k-aligned address, so it is safe to assume that - * write_acpi_tables() will write the table at that address. - */ - addr = map_to_sysmem((void *)(ulong)acpi); - write_acpi_tables(addr); + addr = gd_acpi_start(); + printf("EFI using ACPI tables at %lx\n", addr); /* And expose them to our EFI payload */ return efi_install_configuration_table(&acpi_guid, - (void *)(uintptr_t)acpi); + (void *)(ulong)addr); } |