Author: sduplichan Date: Tue Oct 19 23:08:11 2010 New Revision: 5976 URL: https://tracker.coreboot.org/trac/coreboot/changeset/5976
Log: 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 <[email protected]> Acked-by: Myles Watson <[email protected]> Modified: trunk/src/cpu/amd/car/cache_as_ram.inc Modified: trunk/src/cpu/amd/car/cache_as_ram.inc ============================================================================== --- trunk/src/cpu/amd/car/cache_as_ram.inc Tue Oct 19 17:25:06 2010 (r5975) +++ trunk/src/cpu/amd/car/cache_as_ram.inc Tue Oct 19 23:08:11 2010 (r5976) @@ -132,14 +132,34 @@ 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 -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
