acpigen: Add functions to generate _STA() and _PRW()
Add helper functions for generating some common objects:
acpigen_write_STA(status) will generate a status method that will
indicate the device status as provided:
Method (_STA) { Return (status) }
Full status byte configuration is possible and macros are provided for
the common status bytes used for generated code:
ACPI_STATUS_DEVICE_ALL_OFF = 0x0
ACPI_STATUS_DEVICE_ALL_ON = 0xF
acpigen_write_PRW() will generate a Power Resoruce for Wake that describes
the GPE that will wake a particular device:
Name (_PRW, Package (2) { wake, level }
Change-Id: I10277f0f3820d272d3975abf34b9a8de577782e5
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/14795
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index e051c82..74efbb0534 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -449,6 +449,17 @@
acpigen_emit_namestring(name);
}
+void acpigen_write_STA(uint8_t status)
+{
+ /*
+ * Method (_STA, 0, NotSerialized) { Return (status) }
+ */
+ acpigen_write_method("_STA", 0);
+ acpigen_emit_byte(0xa4);
+ acpigen_write_byte(status);
+ acpigen_pop_len();
+}
+
/*
* Generates a func with max supported P-states.
*/
@@ -503,6 +514,18 @@
acpigen_pop_len();
}
+void acpigen_write_PRW(u32 wake, u32 level)
+{
+ /*
+ * Name (_PRW, Package () { wake, level }
+ */
+ acpigen_write_name("_PRW");
+ acpigen_write_package(2);
+ acpigen_write_integer(wake);
+ acpigen_write_integer(level);
+ acpigen_pop_len();
+}
+
void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat,
u32 busmLat, u32 control, u32 status)
{