diff options
| author | Simon Glass | 2020-09-22 12:44:53 -0600 |
|---|---|---|
| committer | Bin Meng | 2020-09-25 11:27:13 +0800 |
| commit | 55109f1d4ed5ffde978bf71c240deff27f6e9b8a (patch) | |
| tree | 5eaf24eeaf32872af1d0e18114045ae0d4425c50 /arch/x86/include | |
| parent | 167c3f6e93abc1675669e2defe28e9d2708f87bb (diff) | |
x86: acpi: Support external GNVS tables
At present U-Boot puts a magic number in the ASL for the GNVS table and
searches for it later.
Add a Kconfig option to use a different approach, where the ASL files
declare the table as an external symbol. U-Boot can then put it wherever
it likes, without any magic numbers or searching.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/acpi/global_nvs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/acpi/global_nvs.h b/arch/x86/include/asm/acpi/global_nvs.h index d56d35ca533..a552cf6374f 100644 --- a/arch/x86/include/asm/acpi/global_nvs.h +++ b/arch/x86/include/asm/acpi/global_nvs.h @@ -11,6 +11,9 @@ * ACPI_GNVS_SIZE. They are to be used in platform's global_nvs.asl file * to declare the GNVS OperationRegion, as well as write_acpi_tables() * for the GNVS address runtime fix up. + * + * If using CONFIG_ACPI_GNVS_EXTERNAL, we don't need to locate the GNVS in + * DSDT, since it is created by code, so ACPI_GNVS_ADDR is unused. */ #define ACPI_GNVS_ADDR 0xdeadbeef #define ACPI_GNVS_SIZE 0x100 |