Intel: Replace MSR 0xcd with MSR_FSB_FREQ

And move the corresponding #define to speedstep.h

Change-Id: I8c884b8ab9ba54e01cfed7647a59deafeac94f2d
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/2339
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

6 files changed, 13 insertions, 7 deletions

diff --git a/src/northbridge/intel/gm45/delay.c b/src/northbridge/intel/gm45/delay.c
index 50bea2c1c8..c33bbe2bf0 100644
--- a/src/northbridge/intel/gm45/delay.c
+++ b/src/northbridge/intel/gm45/delay.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <cpu/x86/tsc.h>
 #include <cpu/x86/msr.h>
+#include <cpu/intel/speedstep.h>
 #include "delay.h"
 
 /* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow. */
@@ -45,7 +46,7 @@ static void _udelay(const u32 us, const u32 numerator, const int total)
 	u32 fsb = 0, divisor;
 	u32 d;			/* ticks per us */
 
-	msr = rdmsr(0xcd);
+	msr = rdmsr(MSR_FSB_FREQ);
 	switch (msr.lo & 0x07) {
 	case 5:
 		fsb = 400;
diff --git a/src/northbridge/intel/i3100/raminit.c b/src/northbridge/intel/i3100/raminit.c
index b453e8ba87..fa42efcac4 100644
--- a/src/northbridge/intel/i3100/raminit.c
+++ b/src/northbridge/intel/i3100/raminit.c
@@ -21,6 +21,7 @@
 
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
+#include <cpu/intel/speedstep.h>
 #include <stdlib.h>
 #include "raminit.h"
 #include "i3100.h"
@@ -583,7 +584,7 @@ static int spd_set_dram_controller_mode(const struct mem_controller *ctrl,
 	drc |= (1 << 4); /* independent clocks */
 
 	/* set front side bus speed */
-	msr = rdmsr(0xcd); /* returns 0 on Pentium M 90nm */
+	msr = rdmsr(MSR_FSB_FREQ); /* returns 0 on Pentium M 90nm */
 	value = msr.lo & 0x07;
 	drc &= ~(3 << 2);
 	drc |= (fsb_conversion[value] << 2);
diff --git a/src/northbridge/intel/i3100/raminit_ep80579.c b/src/northbridge/intel/i3100/raminit_ep80579.c
index 5fe206ff2a..4c688d55e9 100644
--- a/src/northbridge/intel/i3100/raminit_ep80579.c
+++ b/src/northbridge/intel/i3100/raminit_ep80579.c
@@ -20,6 +20,7 @@
 
 #include <cpu/x86/mtrr.h>
 #include <cpu/x86/cache.h>
+#include <cpu/intel/speedstep.h>
 #include "raminit_ep80579.h"
 #include "ep80579.h"
 
@@ -441,8 +442,8 @@ static int spd_set_dram_controller_mode(const struct mem_controller *ctrl,
 
 	/* TODO check: */
 	/* set front side bus speed */
-	msr = rdmsr(0xcd); /* returns 0 on Pentium M 90nm */
-	print_debug("msr 0xcd = ");
+	msr = rdmsr(MSR_FSB_FREQ); /* returns 0 on Pentium M 90nm */
+	print_debug("MSR FSB_FREQ(0xcd) = ");
 	print_debug_hex32(msr.hi);
 	print_debug_hex32(msr.lo);
 	print_debug("\n");
diff --git a/src/northbridge/intel/i5000/raminit.c b/src/northbridge/intel/i5000/raminit.c
index ffc579a32c..3c913cf66c 100644
--- a/src/northbridge/intel/i5000/raminit.c
+++ b/src/northbridge/intel/i5000/raminit.c
@@ -25,6 +25,7 @@
 #include <device/pci_def.h>
 #include <device/pnp_def.h>
 #include <cpu/x86/lapic.h>
+#include <cpu/intel/speedstep.h>
 #include <console/console.h>
 #include <spd.h>
 #include <types.h>
@@ -1560,7 +1561,7 @@ static int i5000_setup_clocking(struct i5000_fbd_setup *setup)
 		return 1;
 	}
 
-	msr = rdmsr(0xcd);
+	msr = rdmsr(MSR_FSB_FREQ);
 
 	switch(msr.lo & 7) {
 	case 1:
diff --git a/src/northbridge/intel/i5000/udelay.c b/src/northbridge/intel/i5000/udelay.c
index 6462fe0316..ff2da6f2a9 100644
--- a/src/northbridge/intel/i5000/udelay.c
+++ b/src/northbridge/intel/i5000/udelay.c
@@ -21,6 +21,7 @@
 #include <stdint.h>
 #include <cpu/x86/tsc.h>
 #include <cpu/x86/msr.h>
+#include <cpu/intel/speedstep.h>
 #include <console/console.h>
 /**
  * Intel Core(tm) cpus always run the TSC at the maximum possible CPU clock
@@ -35,7 +36,7 @@ void udelay(u32 us)
 	u32 d;			/* ticks per us */
 	u32 dn = 0x1000000 / 2;	/* how many us before we need to use hi */
 
-	msr = rdmsr(0xcd);
+	msr = rdmsr(MSR_FSB_FREQ);
 	switch (msr.lo & 0x07) {
 	case 5:
 		fsb = 400;
diff --git a/src/northbridge/intel/i945/udelay.c b/src/northbridge/intel/i945/udelay.c
index ce5e9d8943..be560085e1 100644
--- a/src/northbridge/intel/i945/udelay.c
+++ b/src/northbridge/intel/i945/udelay.c
@@ -22,6 +22,7 @@
 #include <stdint.h>
 #include <cpu/x86/tsc.h>
 #include <cpu/x86/msr.h>
+#include <cpu/intel/speedstep.h>
 
 /* Simple 32- to 64-bit multiplication. Uses 16-bit words to avoid overflow. */
 static inline void multiply_to_tsc(tsc_t *const tsc, const u32 a, const u32 b)
@@ -46,7 +47,7 @@ void udelay(u32 us)
 	u32 fsb = 0, divisor;
 	u32 d;			/* ticks per us */
 
-	msr = rdmsr(0xcd);
+	msr = rdmsr(MSR_FSB_FREQ);
 	switch (msr.lo & 0x07) {
 	case 5:
 		fsb = 400;