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authorKyösti Mälkki <kyosti.malkki@gmail.com>2012-07-11 08:02:39 +0300
committerPatrick Georgi <patrick@georgi-clan.de>2012-07-16 18:45:09 +0200
commit55fff930ce01aff16dfd24cf0d446a3a181dd6f7 (patch)
tree9dab582083278a10d2141e0f9a73402340ae38c8 /src/northbridge/amd
parentd4821fc702767626cbf58940d4a08f6688b354a4 (diff)
downloadcoreboot-55fff930ce01aff16dfd24cf0d446a3a181dd6f7.tar.xz
Move setup_uma_memory() to Agesa Family14 northbridge
Following boards had identical code: amd/inagua amd/persimmon The following had only whitespace or debug level changes compared to ones above. amd/union_station amd/south_station asrock/e350m1 Change-Id: I11ee46e06e1dd510cba551166189ebcaa144464b Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1208 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/northbridge/amd')
-rw-r--r--src/northbridge/amd/agesa/family14/northbridge.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/northbridge/amd/agesa/family14/northbridge.c b/src/northbridge/amd/agesa/family14/northbridge.c
index 021a1db2bf..dbc432a3ea 100644
--- a/src/northbridge/amd/agesa/family14/northbridge.c
+++ b/src/northbridge/amd/agesa/family14/northbridge.c
@@ -31,6 +31,7 @@
#include <cbmem.h>
#include <cpu/x86/lapic.h>
+#include <cpu/amd/mtrr.h>
#include "agesawrapper.h"
#include "chip.h"
@@ -516,6 +517,48 @@ static void domain_read_resources(device_t dev)
#endif
}
+void setup_uma_memory(void)
+{
+#if CONFIG_GFXUMA
+ msr_t msr, msr2;
+ uint32_t sys_mem;
+
+ /* TOP_MEM: the top of DRAM below 4G */
+ msr = rdmsr(TOP_MEM);
+ printk
+ (BIOS_INFO, "%s, TOP MEM: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
+ __func__, msr.lo, msr.hi);
+
+ /* TOP_MEM2: the top of DRAM above 4G */
+ msr2 = rdmsr(TOP_MEM2);
+ printk
+ (BIOS_INFO, "%s, TOP MEM2: msr2.lo = 0x%08x, msr2.hi = 0x%08x\n",
+ __func__, msr2.lo, msr2.hi);
+
+ /* refer to UMA Size Consideration in Family14h BKDG. */
+ sys_mem = msr.lo + 0x1000000; // Ignore 16MB allocated for C6 when finding UMA size, refer MemNGetUmaSizeON()
+ if ((msr.hi & 0x0000000F) || (sys_mem >= 0x80000000)) {
+ uma_memory_size = 0x18000000; /* >= 2G memory, 384M recommended UMA */
+ }
+ else {
+ if (sys_mem >= 0x40000000) {
+ uma_memory_size = 0x10000000; /* >= 1G memory, 256M recommended UMA */
+ } else {
+ uma_memory_size = 0x4000000; /* <1G memory, 64M recommended UMA */
+ }
+ }
+
+ uma_memory_base = msr.lo - uma_memory_size; /* TOP_MEM1 */
+ printk(BIOS_INFO, "%s: uma size 0x%08llx, memory start 0x%08llx\n",
+ __func__, uma_memory_size, uma_memory_base);
+
+ /* TODO: TOP_MEM2 */
+#else
+ uma_memory_size = 0x10000000; /* 256M recommended UMA */
+ uma_memory_base = 0x30000000; /* 1GB system memory supported */
+#endif
+}
+
static void domain_set_resources(device_t dev)
{
printk(BIOS_DEBUG, "\nFam14h - domain_set_resources.\n");