summaryrefslogtreecommitdiff
path: root/src/cpu/amd
diff options
context:
space:
mode:
authorScott Duplichan <scott@notabs.org>2011-05-15 21:01:42 +0000
committerMarc Jones <marc.jones@amd.com>2011-05-15 21:01:42 +0000
commita72425a7e624efd01bacbea87154383b05e41b57 (patch)
tree24f3db823bde8c0039bdc1f5c8b3ad91fae049b3 /src/cpu/amd
parenteb97e9688f4ae8060c12cd1c57c3bc80c547e5b2 (diff)
downloadcoreboot-a72425a7e624efd01bacbea87154383b05e41b57.tar.xz
1) Initialize BSP fixed MTRRs to match AP fixed MTRR initialization.
2) Remove coreboot variable MTRR initialization because AMD reference code handles it. Signed-off-by: Scott Duplichan <scott@notabs.org> Acked-by: Marc Jones <marcj303@gmail.com> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@6570 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/cpu/amd')
-rw-r--r--src/cpu/amd/agesa_wrapper/family14/model_14_init.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/src/cpu/amd/agesa_wrapper/family14/model_14_init.c b/src/cpu/amd/agesa_wrapper/family14/model_14_init.c
index 01bd2639f0..d4d9667908 100644
--- a/src/cpu/amd/agesa_wrapper/family14/model_14_init.c
+++ b/src/cpu/amd/agesa_wrapper/family14/model_14_init.c
@@ -62,6 +62,7 @@ static void model_14_init(device_t dev)
u8 i;
msr_t msr;
+ int msrno;
struct node_core_id id;
#if CONFIG_LOGICAL_CPUS == 1
u32 siblings;
@@ -70,12 +71,24 @@ static void model_14_init(device_t dev)
// id = get_node_core_id(read_nb_cfg_54()); /* nb_cfg_54 can not be set */
// printk(BIOS_DEBUG, "nodeid = %02d, coreid = %02d\n", id.nodeid, id.coreid);
- /* Turn on caching if we haven't already */
- x86_enable_cache();
- amd_setup_mtrrs();
- x86_mtrr_check();
-
- disable_cache();
+ disable_cache ();
+ /* Enable access to AMD RdDram and WrDram extension bits */
+ msr = rdmsr(SYSCFG_MSR);
+ msr.lo |= SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYSCFG_MSR, msr);
+
+ // BSP: make a0000-bffff UC, c0000-fffff WB, same as OntarioApMtrrSettingsList for APs
+ msr.lo = msr.hi = 0;
+ wrmsr (0x259, msr);
+ msr.lo = msr.hi = 0x1e1e1e1e;
+ for (msrno = 0x268; msrno <= 0x26f; msrno++)
+ wrmsr (msrno, msr);
+
+ /* disable access to AMD RdDram and WrDram extension bits */
+ msr = rdmsr(SYSCFG_MSR);
+ msr.lo &= ~SYSCFG_MSR_MtrrFixDramModEn;
+ wrmsr(SYSCFG_MSR, msr);
+ enable_cache ();
/* zero the machine check error status registers */
msr.lo = 0;
@@ -84,8 +97,6 @@ static void model_14_init(device_t dev)
wrmsr(MCI_STATUS + (i * 4), msr);
}
- enable_cache();
-
/* Enable the local cpu apics */
setup_lapic();