ColdFire: Add M5235EVB Platform for MCF523x

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

1 files changed, 109 insertions, 0 deletions

diff --git a/cpu/mcf523x/cpu.c b/cpu/mcf523x/cpu.c
new file mode 100644
index 0000000..f0d954b
--- /dev/null
+++ b/cpu/mcf523x/cpu.c
@@ -0,0 +1,109 @@
+/*
+ *
+ * (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 <watchdog.h>
+#include <command.h>
+
+#include <asm/immap.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_reset(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
+{
+	volatile ccm_t *ccm = (ccm_t *) MMAP_CCM;
+
+	ccm->rcr = CCM_RCR_SOFTRST;
+	/* we don't return! */
+	return 0;
+};
+
+int checkcpu(void)
+{
+	volatile ccm_t *ccm = (ccm_t *) MMAP_CCM;
+	u16 msk;
+	u16 id = 0;
+	u8 ver;
+
+	puts("CPU:   ");
+	msk = (ccm->cir >> 6);
+	ver = (ccm->cir & 0x003f);
+	switch (msk) {
+	case 0x31:
+		id = 5235;
+		break;
+	}
+
+	if (id) {
+		printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
+		       ver);
+		printf("       CPU CLK %d Mhz BUS CLK %d Mhz\n",
+		       (int)(gd->cpu_clk / 1000000),
+		       (int)(gd->bus_clk / 1000000));
+	}
+
+	return 0;
+};
+
+#if defined(CONFIG_WATCHDOG)
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset(void)
+{
+	volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+	wdp->sr = 0x5555;	/* Count register */
+	asm("nop");
+	wdp->sr = 0xAAAA;	/* Count register */
+}
+
+int watchdog_disable(void)
+{
+	volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+	/* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
+	wdp->cr |= WTM_WCR_HALTED;	/* halted watchdog timer */
+
+	puts("WATCHDOG:disabled\n");
+	return (0);
+}
+
+int watchdog_init(void)
+{
+	volatile wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+	u32 wdog_module = 0;
+
+	/* set timeout and enable watchdog */
+	wdog_module = ((CFG_CLK / CFG_HZ) * CONFIG_WATCHDOG_TIMEOUT);
+	wdog_module |= (wdog_module / 8192);
+	wdp->mr = wdog_module;
+
+	wdp->cr = WTM_WCR_EN;
+	puts("WATCHDOG:enabled\n");
+
+	return (0);
+}
+#endif				/* CONFIG_WATCHDOG */