[coreboot-gerrit] Change in coreboot[master]: nb/intel/sandybridge: improve indexed register helper macros

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/38577 )

Change subject: nb/intel/sandybridge: improve indexed register helper macros
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nb/intel/sandybridge: improve indexed register helper macros

Replace the multiplications with corresponding shifts, so that it's
easier to see at which bit offsets the values get assigned.

Change-Id: I0b0d5172394ff65edfe57bdad474631938e58872
Signed-off-by: Felix Held 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38577
Tested-by: build bot (Jenkins) 
Reviewed-by: HAOUAS Elyes 
Reviewed-by: Patrick Rudolph 
Reviewed-by: Angel Pons 
---
M src/northbridge/intel/sandybridge/sandybridge.h
1 file changed, 5 insertions(+), 5 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  HAOUAS Elyes: Looks good to me, but someone else must approve
  Patrick Rudolph: Looks good to me, approved
  Angel Pons: Looks good to me, approved

diff --git a/src/northbridge/intel/sandybridge/sandybridge.h b/src/northbridge/intel/sandybridge/sandybridge.h
index f5c1e41..ffc1d9f 100644
--- a/src/northbridge/intel/sandybridge/sandybridge.h
+++ b/src/northbridge/intel/sandybridge/sandybridge.h
@@ -128,11 +128,11 @@
 #define MCHBAR32_AND_OR(x, and, or) (MCHBAR32(x) = (MCHBAR32(x) & (and)) | (or))

/* Indexed register helper macros */
-#define Gz(r, z)	((r) + ((z) * 0x100))
-#define Ly(r, y)	((r) + ((y) * 4))
-#define Cx(r, x)	((r) + ((x) * 0x400))
-#define CxLy(r, x, y)	((r) + ((x) * 0x400) + ((y) * 4))
-#define GzLy(r, z, y)	((r) + ((z) * 0x100) + ((y) * 4))
+#define Gz(r, z)	((r) + ((z) <<  8))
+#define Ly(r, y)	((r) + ((y) <<  2))
+#define Cx(r, x)	((r) + ((x) << 10))
+#define CxLy(r, x, y)	((r) + ((x) << 10) + ((y) << 2))
+#define GzLy(r, z, y)	((r) + ((z) <<  8) + ((y) << 2))

/* byte lane training register base addresses */
 #define LANEBASE_B0	0x0000