1 files changed, 67 insertions, 0 deletions
diff --git a/src/northbridge/intel/ironlake/memmap.c b/src/northbridge/intel/ironlake/memmap.c
new file mode 100644
index 0000000000..b2d61fe93a
--- /dev/null
+++ b/src/northbridge/intel/ironlake/memmap.c
@@ -0,0 +1,67 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2012 Google LLC
+ * Copyright (C) 2013 Vladimir Serbinenko.
+ *
+ * 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.
+ */
+
+#define __SIMPLE_DEVICE__
+
+#include <arch/romstage.h>
+#include <device/pci_ops.h>
+#include <cbmem.h>
+#include <cpu/x86/mtrr.h>
+#include <cpu/x86/smm.h>
+#include <program_loading.h>
+#include <cpu/intel/smm_reloc.h>
+#include "ironlake.h"
+
+static uintptr_t smm_region_start(void)
+{
+	/* Base of TSEG is top of usable DRAM */
+	uintptr_t tom = pci_read_config32(PCI_DEV(0,0,0), TSEG);
+	return tom;
+}
+
+static uintptr_t northbridge_get_tseg_base(void)
+{
+	return smm_region_start();
+}
+
+static size_t northbridge_get_tseg_size(void)
+{
+	return CONFIG_SMM_TSEG_SIZE;
+}
+
+void *cbmem_top_chipset(void)
+{
+	return (void *) smm_region_start();
+}
+
+void smm_region(uintptr_t *start, size_t *size)
+{
+	*start = northbridge_get_tseg_base();
+	*size = northbridge_get_tseg_size();
+}
+
+void fill_postcar_frame(struct postcar_frame *pcf)
+{
+	uintptr_t top_of_ram;
+
+	/* Cache at least 8 MiB below the top of ram, and at most 8 MiB
+	 * above top of the ram. This satisfies MTRR alignment requirement
+	 * with different TSEG size configurations.
+	 */
+	top_of_ram = ALIGN_DOWN((uintptr_t)cbmem_top(), 8*MiB);
+	postcar_frame_add_mtrr(pcf, top_of_ram - 8*MiB, 8*MiB, MTRR_TYPE_WRBACK);
+	postcar_frame_add_mtrr(pcf, top_of_ram, 8*MiB, MTRR_TYPE_WRBACK);
+}