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 <s...@chromium.org>
---
Changes in v4:
- Drop patch "video: Allow building video drivers for SPL"
Changes in v2:
- Drop patch to set high bits of the mtrr base register, for now
lib/efi_loader/efi_acpi.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/lib/efi_loader/efi_acpi.c b/lib/efi_loader/efi_acpi.c
index 2ddc3502b5df..f755af76f866 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);
}
--
2.41.0.162.gfafddb0af9-goog
