diff options
Diffstat (limited to 'src/cpu')
| -rw-r--r-- | src/cpu/amd/model_lx/model_lx_init.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/cpu/amd/model_lx/model_lx_init.c b/src/cpu/amd/model_lx/model_lx_init.c index f7787538a9..ac075eca59 100644 --- a/src/cpu/amd/model_lx/model_lx_init.c +++ b/src/cpu/amd/model_lx/model_lx_init.c @@ -5,7 +5,7 @@ #include <cpu/cpu.h> #include <cpu/x86/lapic.h> #include <cpu/x86/cache.h> - +#include <cpu/amd/lxdef.h> static void vsm_end_post_smi(void) { @@ -19,9 +19,37 @@ static void vsm_end_post_smi(void) static void model_lx_init(device_t dev) { + + msr_t msr; + printk_debug("model_lx_init\n"); /* Turn on caching if we haven't already */ + + /* Instruction Memory Configuration register + * set EBE bit, required when L2 cache is enabled + */ + msr = rdmsr(CPU_IM_CONFIG); + msr.lo |= 0x400; + wrmsr(CPU_IM_CONFIG, msr); + + /* Data Memory Subsystem Configuration register + * set EVCTONRPL bit, required when L2 cache is enabled in victim mode + */ + msr = rdmsr(CPU_DM_CONFIG0); + msr.lo |= 0x4000; + wrmsr(CPU_DM_CONFIG0, msr); + + /* invalidate L2 cache */ + msr.hi = 0x00; + msr.lo = 0x10; + wrmsr(L2_CONFIG_MSR, msr); + + /* Enable L2 cache */ + msr.hi = 0x00; + msr.lo = 0x0f; + wrmsr(L2_CONFIG_MSR, msr); + x86_enable_cache(); /* Enable the local cpu apics */ |