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-rw-r--r--src/soc/amd/stoneyridge/bootblock/bootblock.c3
-rw-r--r--src/soc/amd/stoneyridge/include/soc/cpu.h11
2 files changed, 13 insertions, 1 deletions
diff --git a/src/soc/amd/stoneyridge/bootblock/bootblock.c b/src/soc/amd/stoneyridge/bootblock/bootblock.c
index fafaf079ce..db5c9b62b9 100644
--- a/src/soc/amd/stoneyridge/bootblock/bootblock.c
+++ b/src/soc/amd/stoneyridge/bootblock/bootblock.c
@@ -25,6 +25,7 @@
#include <amdblocks/agesawrapper.h>
#include <amdblocks/agesawrapper_call.h>
#include <soc/pci_devs.h>
+#include <soc/cpu.h>
#include <soc/northbridge.h>
#include <soc/southbridge.h>
#include <amdblocks/psp.h>
@@ -61,7 +62,7 @@ static void amd_initmmio(void)
* todo: AGESA currently writes variable MTRRs. Once that is
* corrected, un-hardcode this MTRR.
*/
- mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - 2;
+ mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_FLASH;
set_var_mtrr(mtrr, FLASH_BASE_ADDR, CONFIG_ROM_SIZE, MTRR_TYPE_WRPROT);
}
diff --git a/src/soc/amd/stoneyridge/include/soc/cpu.h b/src/soc/amd/stoneyridge/include/soc/cpu.h
index d2c412f4ef..bf8ed496ef 100644
--- a/src/soc/amd/stoneyridge/include/soc/cpu.h
+++ b/src/soc/amd/stoneyridge/include/soc/cpu.h
@@ -16,6 +16,17 @@
#ifndef __STONEYRIDGE_CPU_H__
#define __STONEYRIDGE_CPU_H__
+#include <device/device.h>
+
+/*
+ * Set a variable MTRR in bootblock and/or romstage. AGESA will use the lowest
+ * numbered registers. Any values defined below are subtracted from the
+ * highest numbered registers.
+ *
+ * todo: Revisit this once AGESA no longer programs MTRRs.
+ */
+#define SOC_EARLY_VMTRR_FLASH 2
+
void stoney_init_cpus(struct device *dev);
#endif /* __STONEYRIDGE_CPU_H__ */