[coreboot-gerrit] Patch set updated for coreboot: acpigen: Add functions to generate _STA() and _PRW()
Duncan Laurie (dlaurie@google.com)
gerrit at coreboot.org
Mon May 16 19:55:14 CEST 2016
Duncan Laurie (dlaurie at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14795
-gerrit
commit ada306834a2aa700f3b180339931726ecc0afaf5
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Mon May 9 11:08:46 2016 -0700
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 at chromium.org>
---
src/arch/x86/acpigen.c | 23 +++++++++++++++++++++++
src/arch/x86/include/arch/acpigen.h | 14 ++++++++++++++
2 files changed, 37 insertions(+)
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index e051c82..74efbb0 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -449,6 +449,17 @@ void acpigen_write_device(const char *name)
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 @@ void acpigen_write_TPC(const char *gnvs_tpc_limit)
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)
{
diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h
index 2555164..e968778 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -22,6 +22,18 @@
#include <stdint.h>
#include <arch/acpi.h>
+/* Values that can be returned for ACPI Device _STA method */
+#define ACPI_STATUS_DEVICE_PRESENT (1 << 0)
+#define ACPI_STATUS_DEVICE_ENABLED (1 << 1)
+#define ACPI_STATUS_DEVICE_SHOW_IN_UI (1 << 2)
+#define ACPI_STATUS_DEVICE_STATE_OK (1 << 3)
+
+#define ACPI_STATUS_DEVICE_ALL_OFF 0
+#define ACPI_STATUS_DEVICE_ALL_ON (ACPI_STATUS_DEVICE_PRESENT |\
+ ACPI_STATUS_DEVICE_ENABLED |\
+ ACPI_STATUS_DEVICE_SHOW_IN_UI |\
+ ACPI_STATUS_DEVICE_STATE_OK)
+
void acpigen_write_len_f(void);
void acpigen_pop_len(void);
void acpigen_set_current(char *curr);
@@ -58,6 +70,8 @@ void acpigen_write_PPC(u8 nr);
void acpigen_write_PPC_NVS(void);
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_TPC(const char *gnvs_tpc_limit);
void acpigen_write_PSS_package(u32 coreFreq, u32 power, u32 transLat, u32 busmLat,
u32 control, u32 status);
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