From bda153be7365ab48b5414ce3a72267f566ced3f3 Mon Sep 17 00:00:00 2001 From: Scott Duplichan Date: Tue, 19 Oct 2010 21:08:11 +0000 Subject: For AMD family 10h processors, msr c0010058 is always programmed for 256 buses, even if fewer are configured. This patch lets msr c0010058 programming use the configured bus count, CONFIG_MMCONF_BUS_NUMBER. Signed-off-by: Scott Duplichan Acked-by: Myles Watson git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5976 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/cpu/amd/car/cache_as_ram.inc | 36 ++++++++++++++++++++++++++++-------- 1 file changed, 28 insertions(+), 8 deletions(-) (limited to 'src/cpu') diff --git a/src/cpu/amd/car/cache_as_ram.inc b/src/cpu/amd/car/cache_as_ram.inc index 5a19a0c0b0..0bea56dbbf 100644 --- a/src/cpu/amd/car/cache_as_ram.inc +++ b/src/cpu/amd/car/cache_as_ram.inc @@ -132,14 +132,34 @@ CAR_FAM10_out: wrmsr #if CONFIG_MMCONF_SUPPORT - /* Set MMIO config space BAR. */ - movl $MSR_MCFG_BASE, %ecx - rdmsr - andl $(~(0xfff00000 | (0xf << 2))), %eax - orl $((CONFIG_MMCONF_BASE_ADDRESS & 0xfff00000)), %eax - orl $((8 << 2) | (1 << 0)), %eax - andl $(~(0x0000ffff)), %edx - orl $(CONFIG_MMCONF_BASE_ADDRESS >> 32), %edx + #if (CONFIG_MMCONF_BASE_ADDRESS > 0xFFFFFFFF) + #error "MMCONF_BASE_ADDRESS too big" + #elif (CONFIG_MMCONF_BASE_ADDRESS & 0xFFFFF) + #error "MMCONF_BASE_ADDRESS not 1MB aligned" + #endif + movl $0, %edx + movl $((CONFIG_MMCONF_BASE_ADDRESS) | (1 << 0)), %eax + #if (CONFIG_MMCONF_BUS_NUMBER == 1) + #elif (CONFIG_MMCONF_BUS_NUMBER == 2) + orl $(1 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 4) + orl $(2 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 8) + orl $(3 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 16) + orl $(4 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 32) + orl $(5 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 64) + orl $(6 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 128) + orl $(7 << 2), %eax + #elif (CONFIG_MMCONF_BUS_NUMBER == 256) + orl $(8 << 2), %eax + #else + #error "bad MMCONF_BUS_NUMBER value" + #endif + movl $(0xc0010058), %ecx wrmsr #endif -- cgit v1.2.3