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authorTsiChungLiew <Tsi-Chung.Liew@freescale.com>2008-01-14 17:43:33 -0600
committerTsiChungLiew <Tsi-Chung.Liew@freescale.com>2008-01-17 14:59:41 -0600
commit1552af70ecab11b9f3dceff7528ed15faf678b9d (patch)
tree19f641d3a5ff6ccd0a6089eb49a090a509e90dc3 /board/freescale/m52277evb/m52277evb.c
parent397b7b81a1f1008798ae1206913508cc89cb3a7d (diff)
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ColdFire: Add MCF5227x cpu and M52277EVB support-1
Signed-off-by: TsiChungLiew <Tsi-Chung.Liew@freescale.com> Signed-off by: John Rigby <jrigby@freescale.com>
Diffstat (limited to 'board/freescale/m52277evb/m52277evb.c')
-rw-r--r--board/freescale/m52277evb/m52277evb.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/board/freescale/m52277evb/m52277evb.c b/board/freescale/m52277evb/m52277evb.c
new file mode 100644
index 0000000..98424c8
--- /dev/null
+++ b/board/freescale/m52277evb/m52277evb.c
@@ -0,0 +1,86 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 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 <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+ puts("Board: ");
+ puts("Freescale M52277 EVB\n");
+ return 0;
+};
+
+long int initdram(int board_type)
+{
+ volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM);
+ u32 dramsize, i;
+
+ dramsize = CFG_SDRAM_SIZE * 0x100000;
+
+ for (i = 0x13; i < 0x20; i++) {
+ if (dramsize == (1 << i))
+ break;
+ }
+ i--;
+
+ sdram->sdcs0 = (CFG_SDRAM_BASE | i);
+
+ sdram->sdcfg1 = CFG_SDRAM_CFG1;
+ sdram->sdcfg2 = CFG_SDRAM_CFG2;
+
+ /* Issue PALL */
+ sdram->sdcr = CFG_SDRAM_CTRL | 2;
+
+ /* Issue LEMR */
+ /*sdram->sdmr = CFG_SDRAM_EMOD; */
+ sdram->sdmr = CFG_SDRAM_MODE;
+
+ udelay(1000);
+
+ /* Issue PALL */
+ sdram->sdcr = CFG_SDRAM_CTRL | 2;
+
+ /* Perform two refresh cycles */
+ sdram->sdcr = CFG_SDRAM_CTRL | 4;
+ sdram->sdcr = CFG_SDRAM_CTRL | 4;
+
+ sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000c00;
+
+ udelay(100);
+
+ return (dramsize);
+};
+
+int testdram(void)
+{
+ /* TODO: XXX XXX XXX */
+ printf("DRAM test not implemented!\n");
+
+ return (0);
+}