From 983fda8391fa0ccfd4e0fd0bfb5a5e662e07b222 Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Thu, 28 Oct 2004 00:09:35 +0000
Subject: Patch by TsiChung Liew, 23 Sep 2004: - add support for MPC8220 CPU -
 Add support for Alaska and Yukon boards

---
 cpu/mpc8220/cpu.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 cpu/mpc8220/cpu.c

(limited to 'cpu/mpc8220/cpu.c')

diff --git a/cpu/mpc8220/cpu.c b/cpu/mpc8220/cpu.c
new file mode 100644
index 0000000..0cfe808
--- /dev/null
+++ b/cpu/mpc8220/cpu.c
@@ -0,0 +1,93 @@
+/*
+ * (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 MPC8220 CPUs
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc8220.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 *) (CFG_MBAR + 0x50));
+
+	printf (" at %s MHz\n", strmhz (buf, clock));
+
+	return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+	volatile gptmr8220_t *gptmr = (volatile gptmr8220_t *) MMAP_GPTMR;
+	ulong msr;
+
+	/* 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));
+
+	/* Charge the watchdog timer */
+	gptmr->Prescl = 10;
+	gptmr->Count = 1;
+
+	gptmr->Mode = GPT_TMS_SGPIO;
+
+	gptmr->Control = GPT_CTRL_WDEN | GPT_CTRL_CE;
+
+	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);
+}
+
+/* ------------------------------------------------------------------------- */
-- 
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