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-rw-r--r--src/northbridge/intel/i945/Kconfig5
-rw-r--r--src/northbridge/intel/i945/Makefile.inc4
-rw-r--r--src/northbridge/intel/i945/stage_cache.c32
3 files changed, 41 insertions, 0 deletions
diff --git a/src/northbridge/intel/i945/Kconfig b/src/northbridge/intel/i945/Kconfig
index 996e1d9d4d..2c21420088 100644
--- a/src/northbridge/intel/i945/Kconfig
+++ b/src/northbridge/intel/i945/Kconfig
@@ -31,6 +31,7 @@ config NORTHBRIDGE_SPECIFIC_OPTIONS # dummy
select POSTCAR_CONSOLE
select SMM_TSEG
select PARALLEL_MP
+ select CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM
config NORTHBRIDGE_INTEL_SUBTYPE_I945GC
def_bool n
@@ -90,4 +91,8 @@ config CHECK_SLFRCS_ON_RESUME
On other boards the check always creates a false positive,
effectively making it impossible to resume.
+config SMM_RESERVED_SIZE
+ hex
+ default 0x100000
+
endif
diff --git a/src/northbridge/intel/i945/Makefile.inc b/src/northbridge/intel/i945/Makefile.inc
index ffeabdc678..47014bc291 100644
--- a/src/northbridge/intel/i945/Makefile.inc
+++ b/src/northbridge/intel/i945/Makefile.inc
@@ -31,4 +31,8 @@ smm-y += udelay.c
postcar-y += ram_calc.c
+romstage-$(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM) += stage_cache.c
+ramstage-$(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM) += stage_cache.c
+postcar-$(CONFIG_CACHE_RELOCATED_RAMSTAGE_OUTSIDE_CBMEM) += stage_cache.c
+
endif
diff --git a/src/northbridge/intel/i945/stage_cache.c b/src/northbridge/intel/i945/stage_cache.c
new file mode 100644
index 0000000000..26d4e7e5a6
--- /dev/null
+++ b/src/northbridge/intel/i945/stage_cache.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2015 Google, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <arch/io.h>
+#include <cbmem.h>
+#include <device/pci.h>
+#include <stage_cache.h>
+#include <cpu/intel/smm/gen1/smi.h>
+#include "i945.h"
+
+void stage_cache_external_region(void **base, size_t *size)
+{
+ /*
+ * The ramstage cache lives in the TSEG region at RESERVED_SMM_OFFSET.
+ * The top of RAM is defined to be the TSEG base address.
+ */
+ *size = CONFIG_SMM_RESERVED_SIZE;
+ *base = (void *)(northbridge_get_tseg_base()
+ + CONFIG_SMM_RESERVED_SIZE);
+}