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-rw-r--r--src/soc/amd/stoneyridge/bootblock/bootblock.c23
-rw-r--r--src/soc/amd/stoneyridge/include/soc/cpu.h4
2 files changed, 25 insertions, 2 deletions
diff --git a/src/soc/amd/stoneyridge/bootblock/bootblock.c b/src/soc/amd/stoneyridge/bootblock/bootblock.c
index 56f6437fb6..7b2c42086d 100644
--- a/src/soc/amd/stoneyridge/bootblock/bootblock.c
+++ b/src/soc/amd/stoneyridge/bootblock/bootblock.c
@@ -32,7 +32,14 @@
#include <timestamp.h>
#include <halt.h>
-/* Set the MMIO Configuration Base Address and Bus Range. */
+#if CONFIG_PI_AGESA_TEMP_RAM_BASE < 0x100000
+#error "Error: CONFIG_PI_AGESA_TEMP_RAM_BASE must be >= 1MB"
+#endif
+#if CONFIG_PI_AGESA_CAR_HEAP_BASE < 0x100000
+#error "Error: CONFIG_PI_AGESA_CAR_HEAP_BASE must be >= 1MB"
+#endif
+
+/* Set the MMIO Configuration Base Address, Bus Range, and misc MTRRs. */
static void amd_initmmio(void)
{
msr_t mmconf;
@@ -47,9 +54,23 @@ static void amd_initmmio(void)
/*
* todo: AGESA currently writes variable MTRRs. Once that is
* corrected, un-hardcode this MTRR.
+ *
+ * Be careful not to use get_free_var_mtrr/set_var_mtrr pairs
+ * where all cores execute the path. Both cores within a compute
+ * unit share MTRRs. Programming core0 has the appearance of
+ * modifying core1 too. Using the pair again will create
+ * duplicate copies.
*/
mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_FLASH;
set_var_mtrr(mtrr, FLASH_BASE_ADDR, CONFIG_ROM_SIZE, MTRR_TYPE_WRPROT);
+
+ mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_CAR_HEAP;
+ set_var_mtrr(mtrr, CONFIG_PI_AGESA_CAR_HEAP_BASE,
+ CONFIG_PI_AGESA_HEAP_SIZE, MTRR_TYPE_WRBACK);
+
+ mtrr = (mtrr_cap.lo & MTRR_CAP_VCNT) - SOC_EARLY_VMTRR_TEMPRAM;
+ set_var_mtrr(mtrr, CONFIG_PI_AGESA_TEMP_RAM_BASE,
+ CONFIG_PI_AGESA_HEAP_SIZE, MTRR_TYPE_UNCACHEABLE);
}
asmlinkage void bootblock_c_entry(uint64_t base_timestamp)
diff --git a/src/soc/amd/stoneyridge/include/soc/cpu.h b/src/soc/amd/stoneyridge/include/soc/cpu.h
index bf8ed496ef..3d230c311e 100644
--- a/src/soc/amd/stoneyridge/include/soc/cpu.h
+++ b/src/soc/amd/stoneyridge/include/soc/cpu.h
@@ -25,7 +25,9 @@
*
* todo: Revisit this once AGESA no longer programs MTRRs.
*/
-#define SOC_EARLY_VMTRR_FLASH 2
+#define SOC_EARLY_VMTRR_FLASH 1
+#define SOC_EARLY_VMTRR_CAR_HEAP 2
+#define SOC_EARLY_VMTRR_TEMPRAM 3
void stoney_init_cpus(struct device *dev);