New patch to review for coreboot: 6076858 baytrail: add in C0 stepping idenitification support.

[Aaron Durbin]

Aaron Durbin ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5062

-gerrit

commit 60768589c0916bd7a41abf570f4506d6d2d6bdcd
Author: Aaron Durbin 
Date:   Thu Jan 23 16:25:11 2014 -0600

baytrail: add in C0 stepping idenitification support.

The C0 cpuid's were added as well as the microcode, but we
    weren't making C0 a first class citizen in the pattrs.

BUG=chrome-os-partner:24542
    BRANCH=baytrail
    TEST=Built and booted b3.

Change-Id: Ie23f8ce867f339eab3b55b8c5f49ab822f23eebb
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://chromium-review.googlesource.com/183594
    Reviewed-by: Duncan Laurie 
---
 src/soc/intel/baytrail/baytrail/lpc.h | 2 ++
 src/soc/intel/baytrail/ramstage.c     | 9 +++++++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/soc/intel/baytrail/baytrail/lpc.h b/src/soc/intel/baytrail/baytrail/lpc.h
index 71391ad..31de310 100644
--- a/src/soc/intel/baytrail/baytrail/lpc.h
+++ b/src/soc/intel/baytrail/baytrail/lpc.h
@@ -36,6 +36,7 @@

#define RID_A_STEPPING_START 1
 #define RID_B_STEPPING_START 5
+#define RID_C_STEPPING_START 0xe
 enum baytrail_stepping {
    STEP_A0,
    STEP_A1,
@@ -43,6 +44,7 @@ enum baytrail_stepping {
    STEP_B1,
    STEP_B2,
    STEP_B3,
+	STEP_C0,
 };

#endif /* _BAYTRAIL_LPC_H_ */
diff --git a/src/soc/intel/baytrail/ramstage.c b/src/soc/intel/baytrail/ramstage.c
index 0cc9327..e8f441f 100644
--- a/src/soc/intel/baytrail/ramstage.c
+++ b/src/soc/intel/baytrail/ramstage.c
@@ -72,7 +72,9 @@ static inline void fill_in_msr(msr_t *msr, int idx)
    }
 }

-static const char *stepping_str[] = { "A0", "A1", "B0", "B1", "B2", "B3" };
+static const char *stepping_str[] = {
+	"A0", "A1", "B0", "B1", "B2", "B3", "C0"
+};

static void fill_in_pattrs(void)
 {
@@ -84,7 +86,10 @@ static void fill_in_pattrs(void)
    dev = dev_find_slot(0, PCI_DEVFN(LPC_DEV, LPC_FUNC));
    attrs->revid = pci_read_config8(dev, REVID);
    /* The revision to stepping IDs have two values per metal stepping. */
-	if (attrs->revid >= RID_B_STEPPING_START) {
+	if (attrs->revid >= RID_C_STEPPING_START) {
+		attrs->stepping = (attrs->revid - RID_C_STEPPING_START) / 2;
+		attrs->stepping += STEP_C0;
+	} else if (attrs->revid >= RID_B_STEPPING_START) {
    	attrs->stepping = (attrs->revid - RID_B_STEPPING_START) / 2;
    	attrs->stepping += STEP_B0;
    } else {