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-rw-r--r--src/cpu/amd/mtrr/amd_mtrr.c49
1 files changed, 21 insertions, 28 deletions
diff --git a/src/cpu/amd/mtrr/amd_mtrr.c b/src/cpu/amd/mtrr/amd_mtrr.c
index 9349ad4a3b..bff67023e9 100644
--- a/src/cpu/amd/mtrr/amd_mtrr.c
+++ b/src/cpu/amd/mtrr/amd_mtrr.c
@@ -102,20 +102,6 @@ static void set_fixed_mtrr_resource(void *gp, struct device *dev, struct resourc
}
-static void uma_fb_resource(void *gp, struct device *dev, struct resource *res)
-{
- struct mem_state *state = gp;
- unsigned long topk;
-
- topk = resk(res->base + res->size);
- if (state->tom2k < topk) {
- state->tom2k = topk;
- }
- if ((topk < 4*1024*1024) && (state->tomk < topk)) {
- state->tomk = topk;
- }
-}
-
/* These will likely move to some device node or cbmem. */
static uint64_t amd_topmem = 0;
static uint64_t amd_topmem2 = 0;
@@ -154,6 +140,25 @@ void setup_bsp_ramtop(void)
amd_topmem2 = (uint64_t) msr2.hi<<32 | msr2.lo;
}
+static void setup_ap_ramtop(void)
+{
+ msr_t msr;
+ uint64_t v;
+
+ v = bsp_topmem();
+ if (!v)
+ return;
+
+ msr.hi = v >> 32;
+ msr.lo = (uint32_t) v;
+ wrmsr(TOP_MEM, msr);
+
+ v = bsp_topmem2();
+ msr.hi = v >> 32;
+ msr.lo = (uint32_t) v;
+ wrmsr(TOP_MEM2, msr);
+}
+
void amd_setup_mtrrs(void)
{
unsigned long address_bits;
@@ -185,9 +190,6 @@ void amd_setup_mtrrs(void)
state.tomk = state.tom2k = 0;
search_global_resources(
- IORESOURCE_MEM | IORESOURCE_UMA_FB, IORESOURCE_MEM | IORESOURCE_UMA_FB,
- uma_fb_resource, &state);
- search_global_resources(
IORESOURCE_MEM | IORESOURCE_CACHEABLE, IORESOURCE_MEM | IORESOURCE_CACHEABLE,
set_fixed_mtrr_resource, &state);
@@ -195,20 +197,11 @@ void amd_setup_mtrrs(void)
disable_cache();
- /* Round state.tomk up to the next greater size that will fit in TOP_MEM */
- state.tomk = (state.tomk + TOP_MEM_MASK_KB) & ~TOP_MEM_MASK_KB;
- msr.hi = state.tomk >> 22;
- msr.lo = state.tomk << 10;
- wrmsr(TOP_MEM, msr);
+ setup_ap_ramtop();
/* if DRAM above 4GB: set SYSCFG_MSR_TOM2En and SYSCFG_MSR_TOM2WB */
sys_cfg.lo &= ~(SYSCFG_MSR_TOM2En | SYSCFG_MSR_TOM2WB);
- if(state.tom2k > (4*1024*1024)) {
- /* Round state.tomk up to the next greater size that will fit in TOP_MEM2 */
- state.tom2k = (state.tom2k + TOP_MEM_MASK_KB) & ~TOP_MEM_MASK_KB;
- msr.hi = state.tom2k >> 22;
- msr.lo = state.tom2k << 10;
- wrmsr(TOP_MEM2, msr);
+ if (bsp_topmem2() > (uint64_t)1<<32) {
sys_cfg.lo |= SYSCFG_MSR_TOM2En;
if(has_tom2wb)
sys_cfg.lo |= SYSCFG_MSR_TOM2WB;