ColdFire: Add M5253DEMO platform support for MCF5253
Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>
diff --git a/board/freescale/m5253demo/m5253demo.c b/board/freescale/m5253demo/m5253demo.c
new file mode 100644
index 0000000..2eb6a04
--- /dev/null
+++ b/board/freescale/m5253demo/m5253demo.c
@@ -0,0 +1,140 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
+ * Hayden Fraser (Hayden.Fraser@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>
+
+int checkboard(void)
+{
+ puts("Board: ");
+ puts("Freescale MCF5253 DEMO\n");
+ return 0;
+};
+
+phys_size_t initdram(int board_type)
+{
+ u32 dramsize = 0;
+
+ /*
+ * Check to see if the SDRAM has already been initialized
+ * by a run control tool
+ */
+ if (!(mbar_readLong(MCFSIM_DCR) & 0x8000)) {
+ u32 RC, temp;
+
+ RC = (CFG_CLK / 1000000) >> 1;
+ RC = (RC * 15) >> 4;
+
+ /* Initialize DRAM Control Register: DCR */
+ mbar_writeShort(MCFSIM_DCR, (0x8400 | RC));
+ __asm__("nop");
+
+ mbar_writeLong(MCFSIM_DACR0, 0x00003224);
+ __asm__("nop");
+
+ /* Initialize DMR0 */
+ dramsize = (CFG_SDRAM_SIZE << 20);
+ temp = (dramsize - 1) & 0xFFFC0000;
+ mbar_writeLong(MCFSIM_DMR0, temp | 1);
+ __asm__("nop");
+
+ mbar_writeLong(MCFSIM_DACR0, 0x0000322c);
+ __asm__("nop");
+
+ /* Write to this block to initiate precharge */
+ *(u32 *) (CFG_SDRAM_BASE) = 0xa5a5a5a5;
+ __asm__("nop");
+
+ /* Set RE bit in DACR */
+ mbar_writeLong(MCFSIM_DACR0,
+ mbar_readLong(MCFSIM_DACR0) | 0x8000);
+ __asm__("nop");
+
+ /* Wait for at least 8 auto refresh cycles to occur */
+ udelay(500);
+
+ /* Finish the configuration by issuing the MRS */
+ mbar_writeLong(MCFSIM_DACR0,
+ mbar_readLong(MCFSIM_DACR0) | 0x0040);
+ __asm__("nop");
+
+ *(u32 *) (CFG_SDRAM_BASE + 0x800) = 0xa5a5a5a5;
+ }
+
+ return dramsize;
+}
+
+int testdram(void)
+{
+ /* TODO: XXX XXX XXX */
+ printf("DRAM test not implemented!\n");
+
+ return (0);
+}
+
+#ifdef CONFIG_CMD_IDE
+#include <ata.h>
+int ide_preinit(void)
+{
+ return (0);
+}
+
+void ide_set_reset(int idereset)
+{
+ volatile atac_t *ata = (atac_t *) CFG_ATA_BASE_ADDR;
+ long period;
+ /* t1, t2, t3, t4, t5, t6, t9, tRD, tA */
+ int piotms[5][9] = { {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */
+ {50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */
+ {30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */
+ {30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */
+ {25, 70, 20, 10, 20, 5, 10, 0, 35} /* PIO 4 */
+ };
+
+ if (idereset) {
+ ata->cr = 0; /* control reset */
+ udelay(100);
+ } else {
+ mbar2_writeLong(CIM_MISCCR, CIM_MISCCR_CPUEND);
+
+#define CALC_TIMING(t) (t + period - 1) / period
+ period = 1000000000 / (CFG_CLK / 2); /* period in ns */
+
+ /*ata->ton = CALC_TIMING (180); */
+ ata->t1 = CALC_TIMING(piotms[2][0]);
+ ata->t2w = CALC_TIMING(piotms[2][1]);
+ ata->t2r = CALC_TIMING(piotms[2][1]);
+ ata->ta = CALC_TIMING(piotms[2][8]);
+ ata->trd = CALC_TIMING(piotms[2][7]);
+ ata->t4 = CALC_TIMING(piotms[2][3]);
+ ata->t9 = CALC_TIMING(piotms[2][6]);
+
+ ata->cr = 0x40; /* IORDY enable */
+ udelay(2000);
+ ata->cr |= 0x01; /* IORDY enable */
+ }
+}
+#endif /* CONFIG_CMD_IDE */