ColdFire: Add M54451EVB platform support for MCF5445x

Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/board/freescale/m54451evb/m54451evb.c b/board/freescale/m54451evb/m54451evb.c
new file mode 100644
index 0000000..5b33a83
--- /dev/null
+++ b/board/freescale/m54451evb/m54451evb.c
@@ -0,0 +1,108 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.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 <spi.h>
+#include <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+	/*
+	 * need to to:
+	 * Check serial flash size. if 2mb evb, else 8mb demo
+	 */
+	puts("Board: ");
+	puts("Freescale M54451 EVB\n");
+	return 0;
+};
+
+phys_size_t initdram(int board_type)
+{
+	u32 dramsize;
+#ifdef CONFIG_CF_SBF
+	/*
+	 * Serial Boot: The dram is already initialized in start.S
+	 * only require to return DRAM size
+	 */
+	dramsize = CFG_SDRAM_SIZE * 0x100000 >> 1;
+#else
+	volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM);
+	volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO);
+	u32 i;
+
+	dramsize = CFG_SDRAM_SIZE * 0x100000;
+
+	if ((sdram->sdcfg1 == CFG_SDRAM_CFG1) &&
+	    (sdram->sdcfg2 == CFG_SDRAM_CFG2))
+		return dramsize;
+
+	for (i = 0x13; i < 0x20; i++) {
+		if (dramsize == (1 << i))
+			break;
+	}
+	i--;
+
+	gpio->mscr_sdram = 0x44;
+
+	sdram->sdcs0 = (CFG_SDRAM_BASE | i);
+
+	sdram->sdcfg1 = CFG_SDRAM_CFG1;
+	sdram->sdcfg2 = CFG_SDRAM_CFG2;
+
+	udelay(200);
+
+	/* Issue PALL */
+	sdram->sdcr = CFG_SDRAM_CTRL | 2;
+	__asm__("nop");
+
+	/* Perform two refresh cycles */
+	sdram->sdcr = CFG_SDRAM_CTRL | 4;
+	__asm__("nop");
+	sdram->sdcr = CFG_SDRAM_CTRL | 4;
+	__asm__("nop");
+
+	/* Issue LEMR */
+	sdram->sdmr = CFG_SDRAM_MODE;
+	__asm__("nop");
+	sdram->sdmr = CFG_SDRAM_EMOD;
+	__asm__("nop");
+
+	sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000000;
+
+	udelay(100);
+#endif
+	return (dramsize);
+};
+
+int testdram(void)
+{
+	/* TODO: XXX XXX XXX */
+	printf("DRAM test not implemented!\n");
+
+	return (0);
+}