tegra: Refactor board.c

This moves everything except the query_sdram_size() function into a common
board.c file.

BUG=chromium-os:19004
TEST=build and boot on Seaboard

Change-Id: I4578f08cd4cfde5e9e28ff800d7a12dbb8e13841
Reviewed-on: http://gerrit.chromium.org/gerrit/7125
Reviewed-by: Yen Lin <yelin@nvidia.com>
Reviewed-by: Che-Liang Chiou <clchiou@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/tegra-common/board.c b/arch/arm/cpu/armv7/tegra-common/board.c
new file mode 100644
index 0000000000..2920802527
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra-common/board.c
@@ -0,0 +1,53 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra.h>
+#include <asm/arch/pmc.h>
+#include <fdt_decode.h>
+
+/*
+ * Boot ROM initializes the odmdata in APBDEV_PMC_SCRATCH20_0,
+ * so we are using this value to identify memory size.
+ */
+
+unsigned int board_query_sdram_size(void)
+{
+	struct pmc_ctlr *const pmc = (struct pmc_ctlr *)NV_PA_PMC_BASE;
+	u32 reg;
+
+	reg = readl(&pmc->pmc_scratch20);
+	debug("pmc->pmc_scratch20 (ODMData) = 0x%08X\n", reg);
+
+	/* bits 31:28 in OdmData are used for RAM size  */
+	switch ((reg) >> 28) {
+	case 1:
+		return 0x10000000;	/* 256 MB */
+	case 2:
+		return 0x20000000;	/* 512 MB */
+	case 3:
+	default:
+		return 0x40000000;	/* 1GB */
+	}
+}