1 files changed, 56 insertions, 0 deletions

diff --git a/arch/powerpc/boot/treeboot-iss4xx.c b/arch/powerpc/boot/treeboot-iss4xx.c
new file mode 100644
index 000000000000..fcc44952874e
--- /dev/null
+++ b/arch/powerpc/boot/treeboot-iss4xx.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
+ *
+ * Based on earlier code:
+ *   Copyright (C) Paul Mackerras 1997.
+ *
+ *   Matt Porter <mporter@kernel.crashing.org>
+ *   Copyright 2002-2005 MontaVista Software Inc.
+ *
+ *   Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
+ *   Copyright (c) 2003, 2004 Zultys Technologies
+ *
+ *    Copyright 2007 David Gibson, IBM Corporation.
+ *
+ * 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 <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "string.h"
+#include "stdio.h"
+#include "page.h"
+#include "ops.h"
+#include "reg.h"
+#include "io.h"
+#include "dcr.h"
+#include "4xx.h"
+#include "44x.h"
+#include "libfdt.h"
+
+BSS_STACK(4096);
+
+static void iss_4xx_fixups(void)
+{
+        ibm4xx_sdram_fixup_memsize();
+}
+
+#define SPRN_PIR        0x11E   /* Processor Indentification Register */
+void platform_init(void)
+{
+        unsigned long end_of_ram = 0x08000000;
+        unsigned long avail_ram = end_of_ram - (unsigned long)_end;
+        u32 pir_reg;
+
+        simple_alloc_init(_end, avail_ram, 128, 64);
+        platform_ops.fixups = iss_4xx_fixups;
+        platform_ops.exit = ibm44x_dbcr_reset;
+        pir_reg = mfspr(SPRN_PIR);
+        fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
+        fdt_init(_dtb_start);
+        serial_console_init();
+}