diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2012-07-11 08:02:57 +0300 |
|---|---|---|
| committer | Patrick Georgi <patrick@georgi-clan.de> | 2012-07-16 18:45:37 +0200 |
| commit | 231f2614021967c9645d9e5b83dbea2089600be3 (patch) | |
| tree | eeb6529641384e8003e19213797d12feb925ecf7 /src/northbridge/amd/amdfam10 | |
| parent | 55fff930ce01aff16dfd24cf0d446a3a181dd6f7 (diff) | |
Move setup_uma_memory() to AMDFAM10 northbridge
Following boards had identical code:
advansus/a785e-i
amd/bimini_fam10
amd/mahogany_fam10
asus/m5a88-v
avalue/eax-785e
gigabyte/ma78gm
iei/kino-780am2-fam10
jetway/pa78vm5
Following boards had identical code:
amd/tilapia_fam10
asus/m4a78-em
asus/m4a785-m
gigabyte/ma785gm
gigabyte/ma785gmt
In between the two, only whitespace difference.
Change-Id: Iaa48cc7b0038ebcc81be49219b4fc87670aa9941
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1209
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/northbridge/amd/amdfam10')
| -rw-r--r-- | src/northbridge/amd/amdfam10/northbridge.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/src/northbridge/amd/amdfam10/northbridge.c b/src/northbridge/amd/amdfam10/northbridge.c index 41434e8fe5..2c9b6a22c4 100644 --- a/src/northbridge/amd/amdfam10/northbridge.c +++ b/src/northbridge/amd/amdfam10/northbridge.c @@ -30,6 +30,7 @@ #include <cpu/cpu.h> #include <cpu/x86/lapic.h> +#include <cpu/amd/mtrr.h> #if CONFIG_LOGICAL_CPUS #include <cpu/amd/multicore.h> @@ -847,6 +848,49 @@ static void disable_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); + + /* 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; + } + + 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 amdfam10_domain_set_resources(device_t dev) { #if CONFIG_PCI_64BIT_PREF_MEM |