diff options
| author | Arthur Heymans <arthur@aheymans.xyz> | 2016-10-08 21:37:13 +0200 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-10-11 23:32:37 +0200 |
| commit | 626f8c84405fc4a16e72fc3e4dc829ca106ea2cf (patch) | |
| tree | 5cc775f55693a975d4573aacb09bcea60a956de3 /src/northbridge | |
| parent | 6f8b7df8ab69cd2be7d024dfbd7fbeb3a684c6b3 (diff) | |
| download | coreboot-626f8c84405fc4a16e72fc3e4dc829ca106ea2cf.tar.xz | |
i945/raminit.c: correctly write CLKCFG for 945GC
MHCBAR(CLKCFG) was previously incorrectly written by the
sdram_program_memory_frequency function which required falsely
limiting the max dram frequency for 945GC.
TESTED on Intel d945gclf (memclock 667 and fsb 533) and
Gigabyte ga-945gcm-s2l (memclock 667 and fsb 1067)
Change-Id: I520efd69fa09fc9fde87c5301fd81121fde6a700
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/16940
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/i945/raminit.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/src/northbridge/intel/i945/raminit.c b/src/northbridge/intel/i945/raminit.c index 5248b00d38..6ca95ee220 100644 --- a/src/northbridge/intel/i945/raminit.c +++ b/src/northbridge/intel/i945/raminit.c @@ -495,9 +495,6 @@ static void sdram_detect_cas_latency_and_ram_speed(struct sys_info * sysinfo, u8 case 667: max_ram_speed = 2; break; } - if (fsbclk() == 533) - max_ram_speed = 1; - sysinfo->memory_frequency = 0; sysinfo->cas = 0; @@ -2079,6 +2076,7 @@ static void sdram_program_memory_frequency(struct sys_info *sysinfo) { u32 clkcfg; u8 reg8; + u8 offset = IS_ENABLED(CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM) ? 1 : 0; printk(BIOS_DEBUG, "Setting Memory Frequency... "); @@ -2100,9 +2098,9 @@ static void sdram_program_memory_frequency(struct sys_info *sysinfo) } switch (sysinfo->memory_frequency) { - case 400: clkcfg |= (2 << 4); break; - case 533: clkcfg |= (3 << 4); break; - case 667: clkcfg |= (4 << 4); break; + case 400: clkcfg |= ((1 + offset) << 4); break; + case 533: clkcfg |= ((2 + offset) << 4); break; + case 667: clkcfg |= ((3 + offset) << 4); break; default: die("Target Memory Frequency Error"); } |