diff options
Diffstat (limited to 'src/mainboard/amd/db800/cache_as_ram_auto.c')
| -rw-r--r-- | src/mainboard/amd/db800/cache_as_ram_auto.c | 60 |
1 files changed, 31 insertions, 29 deletions
diff --git a/src/mainboard/amd/db800/cache_as_ram_auto.c b/src/mainboard/amd/db800/cache_as_ram_auto.c index 5ee6dbb74821..c18b0bb154d3 100644 --- a/src/mainboard/amd/db800/cache_as_ram_auto.c +++ b/src/mainboard/amd/db800/cache_as_ram_auto.c @@ -35,6 +35,7 @@ #include <cpu/amd/geode_post_code.h> #include "southbridge/amd/cs5536/cs5536.h" +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) #define POST_CODE(x) outb(x, 0x80) #define SERIAL_DEV PNP_DEV(0x2e, W83627HF_SP1) @@ -60,37 +61,38 @@ static inline int spd_read_byte(unsigned int device, unsigned int address) #include "cpu/amd/model_lx/cpureginit.c" #include "cpu/amd/model_lx/syspreinit.c" +struct msrinit { + u32 msrnum; + msr_t msr; + }; + +static const struct msrinit msr_table[] = +{ + {CPU_RCONF_DEFAULT, {.hi = 0x24fffc02,.lo = 0x1000A000}}, /* Setup access to cache under 1MB. + * Rom Properties: Write Serialize, WriteProtect. + * RomBase: 0xFFFC0 + * SysTop to RomBase Properties: Write Serialize, Cache Disable. + * SysTop: 0x000A0 + * System Memory Properties: (Write Back) */ + {CPU_RCONF_A0_BF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xA0000-0xBFFFF : (Write Back) */ + {CPU_RCONF_C0_DF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xC0000-0xDFFFF : (Write Back) */ + {CPU_RCONF_E0_FF, {.hi = 0x00000000,.lo = 0x00000000}}, /* 0xE0000-0xFFFFF : (Write Back) */ + + /* Setup access to memory under 1MB. Note: VGA hole at 0xA0000-0xBFFFF */ + {MSR_GLIU0_BASE1, {.hi = 0x20000000,.lo = 0x000fff80}}, // 0x00000-0x7FFFF + {MSR_GLIU0_BASE2, {.hi = 0x20000000,.lo = 0x080fffe0}}, // 0x80000-0x9FFFF + {MSR_GLIU0_SHADOW, {.hi = 0x2000FFFF,.lo = 0xFFFF0003}}, // 0xC0000-0xFFFFF + {MSR_GLIU1_BASE1, {.hi = 0x20000000,.lo = 0x000fff80}}, // 0x00000-0x7FFFF + {MSR_GLIU1_BASE2, {.hi = 0x20000000,.lo = 0x080fffe0}}, // 0x80000-0x9FFFF + {MSR_GLIU1_SHADOW, {.hi = 0x2000FFFF,.lo = 0xFFFF0003}}, // 0xC0000-0xFFFFF +}; + + static void msr_init(void) { - msr_t msr; - - /* Setup access to the cache for under 1MB. */ - msr.hi = 0x24fffc02; - msr.lo = 0x1000A000; /* 0-A0000 write back */ - wrmsr(CPU_RCONF_DEFAULT, msr); - - msr.hi = 0x0; /* Write back */ - msr.lo = 0x0; - wrmsr(CPU_RCONF_A0_BF, msr); - wrmsr(CPU_RCONF_C0_DF, msr); - wrmsr(CPU_RCONF_E0_FF, msr); - - /* Setup access to the cache for under 640K. Note MC not setup yet. */ - msr.hi = 0x20000000; - msr.lo = 0xfff80; - wrmsr(MSR_GLIU0 + 0x20, msr); - - msr.hi = 0x20000000; - msr.lo = 0x80fffe0; - wrmsr(MSR_GLIU0 + 0x21, msr); - - msr.hi = 0x20000000; - msr.lo = 0xfff80; - wrmsr(MSR_GLIU1 + 0x20, msr); - - msr.hi = 0x20000000; - msr.lo = 0x80fffe0; - wrmsr(MSR_GLIU1 + 0x21, msr); + int i; + for (i = 0; i < ARRAY_SIZE(msr_table); i++) + wrmsr(msr_table[i].msrnum, msr_table[i].msr); } static void mb_gpio_init(void) |