* Add support for IceCube board (with MGT5100 and MPC5200 CPUs)

* Add support for MGT5100 and MPC5200 processors

1 files changed, 103 insertions, 0 deletions

diff --git a/cpu/mpc5xxx/cpu.c b/cpu/mpc5xxx/cpu.c
new file mode 100644
index 0000000..7d95d2f
--- /dev/null
+++ b/cpu/mpc5xxx/cpu.c
@@ -0,0 +1,103 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.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
+ */
+
+/*
+ * CPU specific code for the MPC5xxx CPUs
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc5xxx.h>
+#include <asm/processor.h>
+
+int checkcpu (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	ulong clock = gd->cpu_clk;
+	char buf[32];
+
+	puts ("CPU:   ");
+
+	printf (CPU_ID_STR);
+
+	printf (" (JTAG ID %08lx)", *(vu_long *)MPC5XXX_CDM_JTAGID);
+
+	printf (" at %s MHz\n", strmhz (buf, clock));
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+int
+do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	ulong msr, addr;
+
+	*(vu_long *)MPC5XXX_CDM_SRESET &= ~(1 << 16);	/* Checkstop Reset enable */
+
+	/* Interrupts and MMU off */
+	__asm__ __volatile__ ("mfmsr    %0":"=r" (msr):);
+
+	msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
+	__asm__ __volatile__ ("mtmsr    %0"::"r" (msr));
+
+	/*
+	 * Trying to execute the next instruction at a non-existing address
+	 * should cause a machine check, resulting in reset
+	 */
+#ifdef CFG_RESET_ADDRESS
+	addr = CFG_RESET_ADDRESS;
+#else
+	/*
+	 * note: when CFG_MONITOR_BASE points to a RAM address, CFG_MONITOR_BASE
+	 * - sizeof (ulong) is usually a valid address. Better pick an address
+	 * known to be invalid on your system and assign it to CFG_RESET_ADDRESS.
+	 */
+	addr = CFG_MONITOR_BASE - sizeof (ulong);
+#endif
+	((void (*)(void)) addr) ();
+	return 1;
+
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Get timebase clock frequency (like cpu_clk in Hz)
+ *
+ */
+unsigned long get_tbclk (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	ulong tbclk;
+
+	tbclk = (gd->bus_clk + 3L) / 4L;
+
+	return (tbclk);
+}
+
+/* ------------------------------------------------------------------------- */