[coreboot-gerrit] Patch set updated for coreboot: acpigen: Add functions to generate _STA() and _PRW()
Duncan Laurie (dlaurie@google.com)
gerrit at coreboot.org
Thu May 12 23:19:07 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 e536daf38a9824e5571fb6c87f728e78d95a35b0
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_always_on() will generate a status method that will
indicate the device is always present:
Method (_STA) { Return (0xF) }
acpigen_write_STA_always_off() will generate a status method that will
indicate the device is not present or powered or operational:
Method (_STA) { Return (0x0) }
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 | 28 ++++++++++++++++++++++++++++
src/arch/x86/include/arch/acpigen.h | 3 +++
2 files changed, 31 insertions(+)
diff --git a/src/arch/x86/acpigen.c b/src/arch/x86/acpigen.c
index 2b59fda..efb257f 100644
--- a/src/arch/x86/acpigen.c
+++ b/src/arch/x86/acpigen.c
@@ -455,6 +455,22 @@ void acpigen_write_device(const char *name)
acpigen_emit_namestring(name);
}
+void acpigen_write_STA_always_on(void)
+{
+ acpigen_write_method("_STA", 0);
+ acpigen_emit_byte(0xa4);
+ acpigen_write_byte(0x0f);
+ acpigen_pop_len();
+}
+
+void acpigen_write_STA_always_off(void)
+{
+ acpigen_write_method("_STA", 0);
+ acpigen_emit_byte(0xa4);
+ acpigen_write_byte(0x00);
+ acpigen_pop_len();
+}
+
/*
* Generates a func with max supported P-states.
*/
@@ -509,6 +525,18 @@ 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..3c45cd5 100644
--- a/src/arch/x86/include/arch/acpigen.h
+++ b/src/arch/x86/include/arch/acpigen.h
@@ -58,6 +58,9 @@ 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_always_on(void);
+void acpigen_write_STA_always_off(void);
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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