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authorTsiChung Liew <Tsi-Chung.Liew@freescale.com>2008-08-11 13:41:49 +0000
committerJohn Rigby <jrigby@freescale.com>2008-08-14 12:31:56 -0600
commit05316f8ece8206339a208ec052f039cd0f7ca922 (patch)
tree189d0cc2a1eacf3d3732f04035387fa7a39b72ce /board/freescale/m54451evb/m54451evb.c
parent922cd7515597e9a2c07d68e2a6240b0b7b0f0136 (diff)
downloadblackbird-obmc-uboot-05316f8ece8206339a208ec052f039cd0f7ca922.tar.gz
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ColdFire: Add M54451EVB platform support for MCF5445x
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
Diffstat (limited to 'board/freescale/m54451evb/m54451evb.c')
-rw-r--r--board/freescale/m54451evb/m54451evb.c108
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 0000000000..5b33a8358e
--- /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);
+}
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