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authorKyösti Mälkki <kyosti.malkki@gmail.com>2012-07-11 08:03:13 +0300
committerPatrick Georgi <patrick@georgi-clan.de>2012-07-16 18:46:33 +0200
commitba589e3630b0e3259b1f3d54434589e76ec48398 (patch)
treeffafff40f2f663cf70a10624bb42c2a2aae80b90 /src/northbridge/amd
parent231f2614021967c9645d9e5b83dbea2089600be3 (diff)
Move setup_uma_memory() to K8 northbridge
These boards had identical UMA code: amd/dbm690t amd/pistachio technexion/tim5690 technexion/tim8690 The ones below had whitespace or debug level change compared to the one above: kontron/kt690 siemens/sitemp_g1p1 These boards use AMDFAM10 guidelines in code: asrock/939a785gmh amd/mahogany Change-Id: Id7c3f48035727f5847f2d7c3a6e87a3d15582003 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1210 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/amdk8/northbridge.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdk8/northbridge.c b/src/northbridge/amd/amdk8/northbridge.c
index 8b9140dd5f..a7aa19dc42 100644
--- a/src/northbridge/amd/amdk8/northbridge.c
+++ b/src/northbridge/amd/amdk8/northbridge.c
@@ -18,6 +18,7 @@
#include <cpu/cpu.h>
#include <cpu/x86/lapic.h>
+#include <cpu/amd/mtrr.h>
#include <cpu/amd/multicore.h>
#if CONFIG_LOGICAL_CPUS
@@ -822,6 +823,68 @@ static u32 hoist_memory(unsigned long hole_startk, int node_id)
#include <cbmem.h>
#endif
+void setup_uma_memory(void)
+{
+#if CONFIG_GFXUMA
+ msr_t msr, msr2;
+
+ /* 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: msr.lo = 0x%08x, msr.hi = 0x%08x\n",
+ __func__, msr2.lo, msr2.hi);
+
+#if !CONFIG_BOARD_ASROCK_939A785GMH && !CONFIG_BOARD_AMD_MAHOGANY
+
+ switch (msr.lo) {
+ case 0x10000000: /* 256M system memory */
+ uma_memory_size = 0x2000000; /* 32M recommended UMA */
+ break;
+
+ case 0x18000000: /* 384M system memory */
+ uma_memory_size = 0x4000000; /* 64M recommended UMA */
+ break;
+
+ case 0x20000000: /* 512M system memory */
+ uma_memory_size = 0x4000000; /* 64M recommended UMA */
+ break;
+
+ default: /* 1GB and above system memory */
+ uma_memory_size = 0x8000000; /* 128M recommended UMA */
+ break;
+ }
+#else
+ /* refer to UMA Size Consideration in 780 BDG. */
+ switch (msr.lo) {
+ case 0x10000000: /* 256M system memory */
+ uma_memory_size = 0x4000000; /* 64M recommended UMA */
+ break;
+
+ case 0x20000000: /* 512M system memory */
+ uma_memory_size = 0x8000000; /* 128M recommended UMA */
+ break;
+
+ default: /* 1GB and above system memory */
+ uma_memory_size = 0x10000000; /* 256M recommended UMA */
+ break;
+ }
+#endif
+
+ 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 = 0x8000000; /* 128M recommended UMA */
+ uma_memory_base = 0x38000000; /* 1GB system memory supposed */
+#endif
+}
+
static void amdk8_domain_set_resources(device_t dev)
{
#if CONFIG_PCI_64BIT_PREF_MEM