[coreboot] New patch to review for coreboot: 3af78a8 lynxpoint: Add helper functions for reading PM and GPIO base
Stefan Reinauer (stefan.reinauer@coreboot.org)
gerrit at coreboot.org
Tue Mar 19 01:59:28 CET 2013
Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2812
-gerrit
commit 3af78a8e1c90f2b6f3ae346b1f12215c29da0fcc
Author: Duncan Laurie <dlaurie at chromium.org>
Date: Thu Mar 7 14:08:04 2013 -0800
lynxpoint: Add helper functions for reading PM and GPIO base
These base addresses are used in several places and it
is helpful to have one location that is reading it.
Change-Id: Ibf589247f37771f06c18e3e58f92aaf3f0d11271
Signed-off-by: Duncan Laurie <dlaurie at chromium.org>
---
src/cpu/intel/haswell/acpi.c | 4 +++-
src/cpu/intel/haswell/haswell_init.c | 2 +-
src/southbridge/intel/lynxpoint/pch.c | 20 ++++++++++++++++++++
src/southbridge/intel/lynxpoint/pch.h | 3 ++-
4 files changed, 26 insertions(+), 3 deletions(-)
diff --git a/src/cpu/intel/haswell/acpi.c b/src/cpu/intel/haswell/acpi.c
index c0df9f6..a4d9cd9 100644
--- a/src/cpu/intel/haswell/acpi.c
+++ b/src/cpu/intel/haswell/acpi.c
@@ -33,6 +33,8 @@
#include "haswell.h"
#include "chip.h"
+#include <southbridge/intel/lynxpoint/pch.h>
+
static int get_cores_per_package(void)
{
struct cpuinfo_x86 c;
@@ -322,7 +324,7 @@ static int generate_P_state_entries(int core, int cores_per_package)
void generate_cpu_entries(void)
{
int len_pr;
- int coreID, cpuID, pcontrol_blk = PMB0_BASE, plen = 6;
+ int coreID, cpuID, pcontrol_blk = get_pmbase(), plen = 6;
int totalcores = dev_count_cpu();
int cores_per_package = get_cores_per_package();
int numcpus = totalcores/cores_per_package;
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c
index c7f89ee..0bb11a8 100644
--- a/src/cpu/intel/haswell/haswell_init.c
+++ b/src/cpu/intel/haswell/haswell_init.c
@@ -267,7 +267,7 @@ static void configure_c_states(void)
msr = rdmsr(MSR_PMG_IO_CAPTURE_BASE);
msr.lo &= ~0x7ffff;
- msr.lo |= (PMB0_BASE + 4); // LVL_2 base address
+ msr.lo |= (get_pmbase() + 4); // LVL_2 base address
msr.lo |= (2 << 16); // CST Range: C7 is max C-state
wrmsr(MSR_PMG_IO_CAPTURE_BASE, msr);
diff --git a/src/southbridge/intel/lynxpoint/pch.c b/src/southbridge/intel/lynxpoint/pch.c
index 6f03716..b4f64e1 100644
--- a/src/southbridge/intel/lynxpoint/pch.c
+++ b/src/southbridge/intel/lynxpoint/pch.c
@@ -65,6 +65,26 @@ int pch_is_lp(void)
return pch_silicon_type() == PCH_TYPE_LPT_LP;
}
+u16 get_pmbase(void)
+{
+ static u16 pmbase;
+
+ if (!pmbase)
+ pmbase = pci_read_config16(pch_get_lpc_device(),
+ PMBASE) & 0xfffc;
+ return pmbase;
+}
+
+u16 get_gpiobase(void)
+{
+ static u16 gpiobase;
+
+ if (!gpiobase)
+ gpiobase = pci_read_config16(pch_get_lpc_device(),
+ GPIOBASE) & 0xfffc;
+ return gpiobase;
+}
+
#ifndef __SMM__
/* Set bit in Function Disble register to hide this device */
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index 38202b5..db9bb77 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -130,7 +130,8 @@ void pch_config_rcba(const struct rcba_config_instruction *rcba_config);
int pch_silicon_revision(void);
int pch_silicon_type(void);
int pch_is_lp(void);
-
+u16 get_pmbase(void);
+u16 get_gpiobase(void);
#if !defined(__PRE_RAM__) && !defined(__SMM__)
#include <device/device.h>
#include <arch/acpi.h>
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