[coreboot] [commit] r5976 - trunk/src/cpu/amd/car
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svn at coreboot.org
Tue Oct 19 23:08:12 CEST 2010
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 <scott at notabs.org>
Acked-by: Myles Watson <mylesgw at gmail.com>
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
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