summaryrefslogtreecommitdiffstats
path: root/arch/m68k/cpu/mcf523x/cpu.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68k/cpu/mcf523x/cpu.c')
-rw-r--r--arch/m68k/cpu/mcf523x/cpu.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/arch/m68k/cpu/mcf523x/cpu.c b/arch/m68k/cpu/mcf523x/cpu.c
new file mode 100644
index 0000000..a3f5684
--- /dev/null
+++ b/arch/m68k/cpu/mcf523x/cpu.c
@@ -0,0 +1,127 @@
+/*
+ *
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 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 <netdev.h>
+
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ ccm_t *ccm = (ccm_t *) MMAP_CCM;
+
+ out_8(&ccm->rcr, CCM_RCR_SOFTRST);
+ /* we don't return! */
+ return 0;
+}
+
+int checkcpu(void)
+{
+ ccm_t *ccm = (ccm_t *) MMAP_CCM;
+ u16 msk;
+ u16 id = 0;
+ u8 ver;
+
+ puts("CPU: ");
+ msk = (in_be16(&ccm->cir) >> 6);
+ ver = (in_be16(&ccm->cir) & 0x003f);
+ switch (msk) {
+ case 0x31:
+ id = 5235;
+ break;
+ }
+
+ if (id) {
+ char buf1[32], buf2[32];
+
+ printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
+ ver);
+ printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
+ strmhz(buf1, gd->cpu_clk),
+ strmhz(buf2, gd->bus_clk));
+ }
+
+ return 0;
+};
+
+#if defined(CONFIG_WATCHDOG)
+/* Called by macro WATCHDOG_RESET */
+void watchdog_reset(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+ /* Count register */
+ out_be16(&wdp->sr, 0x5555);
+ asm("nop");
+ out_be16(&wdp->sr, 0xaaaa);
+}
+
+int watchdog_disable(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+
+ /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
+ /* halted watchdog timer */
+ setbits_be16(&wdp->cr, WTM_WCR_HALTED);
+
+ puts("WATCHDOG:disabled\n");
+ return (0);
+}
+
+int watchdog_init(void)
+{
+ wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
+ u32 wdog_module = 0;
+
+ /* set timeout and enable watchdog */
+ wdog_module = ((CONFIG_SYS_CLK / CONFIG_SYS_HZ) * CONFIG_WATCHDOG_TIMEOUT);
+ wdog_module |= (wdog_module / 8192);
+ out_be16(&wdp->mr, wdog_module);
+
+ out_be16(&wdp->cr, WTM_WCR_EN);
+ puts("WATCHDOG:enabled\n");
+
+ return (0);
+}
+#endif /* CONFIG_WATCHDOG */
+
+#if defined(CONFIG_MCFFEC)
+/* Default initializations for MCFFEC controllers. To override,
+ * create a board-specific function called:
+ * int board_eth_init(bd_t *bis)
+ */
+
+int cpu_eth_init(bd_t *bis)
+{
+ return mcffec_initialize(bis);
+}
+#endif
OpenPOWER on IntegriCloud