ColdFire: Add MCF547x_8x cpu arch

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

1 files changed, 143 insertions, 0 deletions

diff --git a/cpu/mcf547x_8x/cpu.c b/cpu/mcf547x_8x/cpu.c
new file mode 100644
index 0000000..528bca6
--- /dev/null
+++ b/cpu/mcf547x_8x/cpu.c
@@ -0,0 +1,143 @@
+/*
+ *
+ * (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 gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
+
+	gptmr->pre = 10;
+	gptmr->cnt = 1;
+
+	/* enable watchdog, set timeout to 0 and wait */
+	gptmr->mode = GPT_TMS_SGPIO;
+	gptmr->ctrl = GPT_CTRL_WDEN | GPT_CTRL_CE;
+
+	/* we don't return! */
+	return 1;
+};
+
+int checkcpu(void)
+{
+	volatile siu_t *siu = (siu_t *) MMAP_SIU;
+	u16 id = 0;
+
+	puts("CPU:   ");
+
+	switch ((siu->jtagid & 0x000FF000) >> 12) {
+	case 0x0C:
+		id = 5485;
+		break;
+	case 0x0D:
+		id = 5484;
+		break;
+	case 0x0E:
+		id = 5483;
+		break;
+	case 0x0F:
+		id = 5482;
+		break;
+	case 0x10:
+		id = 5481;
+		break;
+	case 0x11:
+		id = 5480;
+		break;
+	case 0x12:
+		id = 5475;
+		break;
+	case 0x13:
+		id = 5474;
+		break;
+	case 0x14:
+		id = 5473;
+		break;
+	case 0x15:
+		id = 5472;
+		break;
+	case 0x16:
+		id = 5471;
+		break;
+	case 0x17:
+		id = 5470;
+		break;
+	}
+
+	if (id) {
+		printf("Freescale MCF%d\n", id);
+		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_HW_WATCHDOG)
+/* Called by macro WATCHDOG_RESET */
+void hw_watchdog_reset(void)
+{
+	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
+
+	gptmr->ocpw = 0xa5;
+}
+
+int watchdog_disable(void)
+{
+	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
+
+	/* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
+	gptmr->mode = 0;
+	gptmr->ctrl = 0;
+
+	puts("WATCHDOG:disabled\n");
+
+	return (0);
+}
+
+int watchdog_init(void)
+{
+
+	volatile gptmr_t *gptmr = (gptmr_t *) (MMAP_GPTMR);
+
+	gptmr->pre = CONFIG_WATCHDOG_TIMEOUT;
+	gptmr->cnt = CFG_TIMER_PRESCALER * 1000;
+
+	gptmr->mode = GPT_TMS_SGPIO;
+	gptmr->ctrl = GPT_CTRL_CE | GPT_CTRL_WDEN;
+	puts("WATCHDOG:enabled\n");
+
+	return (0);
+}
+#endif				/* CONFIG_HW_WATCHDOG */