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>

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");