diff options
| author | Ronald G. Minnich <rminnich@gmail.com> | 2006-05-15 04:44:15 +0000 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2006-05-15 04:44:15 +0000 |
| commit | 98e904ea7cfe9ef1ffeda4d3eaac2d42a5345760 (patch) | |
| tree | a2f33a9b5ecb449c2708801bf1e485c2e5e62816 /src/northbridge/amd/gx2 | |
| parent | b9a335cb9b70bc8b0a5ebd099e1f2194ecaeef27 (diff) | |
OLPC now builds and works just fine.
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2305 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/northbridge/amd/gx2')
| -rw-r--r-- | src/northbridge/amd/gx2/northbridge.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/src/northbridge/amd/gx2/northbridge.c b/src/northbridge/amd/gx2/northbridge.c index 1dd4c9c7a3..e70938dafb 100644 --- a/src/northbridge/amd/gx2/northbridge.c +++ b/src/northbridge/amd/gx2/northbridge.c @@ -70,7 +70,7 @@ sizeram(void) /* ram has none of this stuff */ #define RAM_PROPERTIES (0) #define DEVICE_PROPERTIES (WRITE_SERIALIZE|CACHE_DISABLE) -#define ROM_PROPERTIES (WRITE_SERIALIZE|WRITE_THROUGH|CACHE_DISABLE) +#define ROM_PROPERTIES (WRITE_SERIALIZE|WRITE_THROUGH) #define MSR_WS_CD_DEFAULT (0x21212121) /* 1810-1817 give you 8 registers with which to program protection regions */ @@ -138,8 +138,8 @@ setup_gx2_cache(void) /* set romrp */ val = ((unsigned long long) ROM_PROPERTIES) << 56; /* make rom base useful for 1M roms */ - /* Flash base address -- sized for 1/2M for now*/ - val |= ((unsigned long long) 0xfff800)<<36; + /* Flash base address -- sized for 1M for now*/ + val |= ((unsigned long long) 0xfff00)<<36; /* set the devrp properties */ val |= ((unsigned long long) DEVICE_PROPERTIES) << 28; /* sigh. Take our TOM, RIGHT shift 12, since it page-aligned, then LEFT-shift 8 for reg. */ @@ -176,7 +176,12 @@ setup_gx2(void) sizem = setup_gx2_cache(); membytes = sizem * 1048576; -#if 0 + /* NOTE! setup_gx2_cache returns the SIZE OF RAM - RAMADJUST! + * so it is safe to use. You should NOT at this point call + * sizeram() directly. + */ + + /* we need to set 0x10000028 and 0x40000029 */ printk_debug("sizem 0x%x, membytes 0x%x\n", sizem, membytes); msr.hi = 0x20000000 | membytes>>24; @@ -190,7 +195,7 @@ setup_gx2(void) msr = rdmsr(0x40000029); printk_debug("MSR 0x%x is now 0x%x:0x%x\n", 0x40000029, msr.hi,msr.lo); - +#if 1 /* fixme: SMM MSR 0x10000026 and 0x400000023 */ /* calculate the OFFSET field */ tmp = membytes - SMM_OFFSET; @@ -206,22 +211,16 @@ setup_gx2(void) msr.hi = tmp; msr.lo = tmp2; wrmsr(0x10000026, msr); -#else - msr.hi = 0x2000000f; - msr.lo = 0xfbf00100; - wrmsr(0x10000028, msr); - msr = rdmsr(0x10000028); - printk_debug("MSR 0x%x is now 0x%x:0x%x\n", 0x10000028, msr.hi, msr.lo); - wrmsr(0x40000029, msr); - msr = rdmsr(0x40000029); - printk_debug("MSR 0x%x is now 0x%x:0x%x\n", 0x40000029, msr.hi, msr.lo); +#endif +#if 0 msr.hi = 0x2cfbc040; msr.lo = 0x400fffc0; wrmsr(0x10000026, msr); msr = rdmsr(0x10000026); printk_debug("MSR 0x%x is now 0x%x:0x%x\n", 0x10000026, msr.hi, msr.lo); - +#endif +#if 0 msr.hi = 0x22fffc02; msr.lo = 0x10ffbf00; wrmsr(0x1808, msr); |