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-rw-r--r--cpu/mcf52x2/cpu.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/cpu/mcf52x2/cpu.c b/cpu/mcf52x2/cpu.c
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+/*
+ * (C) Copyright 2003
+ * Josef Baumgartner <josef.baumgartner@telex.de>
+ *
+ * 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>
+
+#ifdef CONFIG_M5272
+#include <asm/immap_5272.h>
+#include <asm/m5272.h>
+#endif
+
+#ifdef CONFIG_M5282
+
+#endif
+
+
+#ifdef CONFIG_M5272
+int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
+ volatile wdog_t * wdp = (wdog_t *)(CFG_MBAR + MCFSIM_WRRR);
+
+ wdp->wdog_wrrr = 0;
+ udelay (1000);
+
+ /* enable watchdog, set timeout to 0 and wait */
+ wdp->wdog_wrrr = 1;
+ while (1);
+
+ /* we don't return! */
+ return 0;
+};
+
+int checkcpu(void) {
+ ulong *dirp = (ulong *)(CFG_MBAR + MCFSIM_DIR);
+ uchar msk;
+ char *suf;
+
+ puts ("CPU: ");
+ msk = (*dirp > 28) & 0xf;
+ switch (msk) {
+ case 0x2: suf = "1K75N"; break;
+ case 0x4: suf = "3K75N"; break;
+ default:
+ suf = NULL;
+ printf ("MOTOROLA MCF5272 (Mask:%01x)\n", msk);
+ break;
+ }
+
+ if (suf)
+ printf ("MOTOROLA MCF5272 %s\n", suf);
+ return 0;
+};
+
+
+#if defined(CONFIG_WATCHDOG)
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset (void)
+{
+ volatile immap_t * regp = (volatile immap_t *)CFG_MBAR;
+ regp->wdog_reg.wdog_wcr = 0;
+}
+
+int watchdog_disable (void)
+{
+ volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
+
+ regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
+ regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
+ regp->wdog_reg.wdog_wrrr = 0; /* disable watchdog timer */
+
+ puts ("WATCHDOG:disabled\n");
+ return (0);
+}
+
+int watchdog_init (void)
+{
+ volatile immap_t *regp = (volatile immap_t *)CFG_MBAR;
+
+ regp->wdog_reg.wdog_wirr = 0; /* disable watchdog interrupt */
+
+ /* set timeout and enable watchdog */
+ regp->wdog_reg.wdog_wrrr = ((CONFIG_WATCHDOG_TIMEOUT * CFG_HZ) / (32768 * 1000)) - 1;
+ regp->wdog_reg.wdog_wcr = 0; /* reset watchdog counter */
+
+ puts ("WATCHDOG:enabled\n");
+ return (0);
+}
+#endif /* #ifdef CONFIG_WATCHDOG */
+
+#endif /* #ifdef CONFIG_M5272 */
+
+
+#ifdef CONFIG_M5282
+int checkcpu (void)
+{
+ puts ("CPU: MOTOROLA Coldfire MCF5282\n");
+ return 0;
+}
+
+int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[]) {
+ return 0;
+};
+#endif