patch-2.4.23 linux-2.4.23/arch/ppc/boot/simple/misc-44x.c

• Lines: 35
• Date: 2003-11-28 10:26:19.000000000 -0800
• Orig file: linux-2.4.22/arch/ppc/boot/simple/misc-44x.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.22/arch/ppc/boot/simple/misc-44x.c linux-2.4.23/arch/ppc/boot/simple/misc-44x.c
@@ -0,0 +1,34 @@
+/*
+ * arch/ppc/simple/misc-44x.c
+ *
+ * Misc. bootloader code for IBM PPC 44x reference boards (Ebony, Ocotea)
+ *
+ * Matt Porter <mporter@mvista.com>
+ * Eugene Surovegin <ebs@ebshome.net>
+ * 
+ * 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.
+ */
+#include <linux/config.h> 
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/ibm4xx.h>
+
+extern struct bi_record *decompress_kernel(unsigned long load_addr,
+	int num_words, unsigned long cksum);
+extern unsigned long timebase_period_ns;
+
+struct bi_record *
+load_kernel(unsigned long load_addr, int num_words, unsigned long cksum)
+{
+	timebase_period_ns = 3;
+	mtdcr(DCRN_MALCR(DCRN_MAL_BASE), MALCR_MMSR);		  /* reset MAL */
+	while (mfdcr(DCRN_MALCR(DCRN_MAL_BASE)) & MALCR_MMSR) {}; /* wait for reset */
+	*(volatile unsigned long *)PPC44x_EMAC0_MR0 = 0x20000000; /* reset EMAC */
+	eieio();
+
+	return decompress_kernel(load_addr, num_words, cksum);
+}