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| author | Sugnan Prabhu S <sugnan.prabhu.s@intel.com> | 2020-06-10 09:51:02 +0530 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-07-07 14:44:55 +0000 |
| commit | 4f77f61d2dc8088a710611936680228d00eabed4 (patch) | |
| tree | cf3a316a82d3a9c1266907267ecef1f5b095f4e2 /src | |
| parent | 879b3c195f6b441c88c768f0cff025128a54986d (diff) | |
| download | coreboot-4f77f61d2dc8088a710611936680228d00eabed4.tar.xz | |
acpi: add STA function to return external variable
This change adds support function to add STA function which returns an
external variable.
Change-Id: I31755a76ee985ee6059289ae194537d531270761
Signed-off-by: Sugnan Prabhu S <sugnan.prabhu.s@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42245
Reviewed-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/acpi/acpigen.c | 11 | ||||
| -rw-r--r-- | src/include/acpi/acpigen.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/acpi/acpigen.c b/src/acpi/acpigen.c index fc6da1beb9..bf1b373a60 100644 --- a/src/acpi/acpigen.c +++ b/src/acpi/acpigen.c @@ -742,6 +742,17 @@ void acpigen_write_STA(uint8_t status) acpigen_pop_len(); } +void acpigen_write_STA_ext(const char *namestring) +{ + /* + * Method (_STA, 0, NotSerialized) { Return (ext_val) } + */ + acpigen_write_method("_STA", 0); + acpigen_emit_byte(RETURN_OP); + acpigen_emit_namestring(namestring); + acpigen_pop_len(); +} + /* * Generates a func with max supported P-states. */ diff --git a/src/include/acpi/acpigen.h b/src/include/acpi/acpigen.h index dffde851f5..701e44ba97 100644 --- a/src/include/acpi/acpigen.h +++ b/src/include/acpi/acpigen.h @@ -319,6 +319,7 @@ void acpigen_write_empty_PCT(void); void acpigen_write_empty_PTC(void); void acpigen_write_PRW(u32 wake, u32 level); void acpigen_write_STA(uint8_t status); +void acpigen_write_STA_ext(const char *namestring); void acpigen_write_TPC(const char *gnvs_tpc_limit); void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat, u32 control, u32 status); |