Patch set updated for coreboot: 6750450 northbridge/gm45/raminit.c: enable GS45 high-performance mode

[Francis Rowe]

Francis Rowe ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/7786

-gerrit

commit 67504507ce9611eefbcc8a47ac50322308a98f0f
Author: Francis Rowe 
Date:   Fri Dec 12 12:42:01 2014 +0000

northbridge/gm45/raminit.c: enable GS45 high-performance mode

X200S uses GS45 chipset, unlike X200 which uses GM45. These two
    chipsets are mostly compatible except for raminit.

The datasheets for GS45 describe a high- and low-performance mode
    for different CPUs. Coreboot currently disables GS45 altogether,
    but forcing coreboot to treat high-performance GS45 as GM45 makes
    the X200S boot if it has the right CPU type.

Hardcode-enable GS45 high-performance mode in coreboot, passing it
    off as GM45. This is known to work with all CPUs except the SU
    (low performance) models.

Patch courtesy of sgsit.

Change-Id: I57032bb6e1ebdaf4e2aa09548e73d253afb9b078
    Signed-off-by: Francis Rowe 
    Signed-off-by: Steve Shenton 
---
 src/northbridge/intel/gm45/raminit.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/northbridge/intel/gm45/raminit.c b/src/northbridge/intel/gm45/raminit.c
index 60b05bd..da38ef4 100644
--- a/src/northbridge/intel/gm45/raminit.c
+++ b/src/northbridge/intel/gm45/raminit.c
@@ -109,8 +109,8 @@ void get_gmch_info(sysinfo_t *sysinfo)
    		printk(BIOS_SPEW, "GMCH: GS40\n");
    		break;
    	case GMCH_GS45:
-			printk(BIOS_SPEW, "GMCH: GS45, using low power mode by default\n");
-			sysinfo->gs45_low_power_mode = 1;
+			printk(BIOS_SPEW, "GMCH: GS45, using high performance mode by default\n");
+			sysinfo->gs45_low_power_mode = 0;
    		break;
    	case GMCH_PM45:
    		printk(BIOS_SPEW, "GMCH: PM45\n");
@@ -1693,7 +1693,7 @@ void raminit(sysinfo_t *const sysinfo, const int s3resume)
 {
    const dimminfo_t *const dimms = sysinfo->dimms;
    const timings_t *const timings = &sysinfo->selected_timings;
-	const int sff = sysinfo->gfx_type == GMCH_GS45;
+	const int sff = (sysinfo->gfx_type == GMCH_GS45) && (sysinfo->gs45_low_power_mode == 1);

int ch;
    u8 reg8;