linux/mpc83xx: add preliminary 2.6.36 kernel support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23633 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 76 insertions, 0 deletions

diff --git a/target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch b/target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch
new file mode 100644
index 0000000000..8c70a0b563
--- /dev/null
+++ b/target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch
@@ -0,0 +1,76 @@
+--- /dev/null
++++ b/arch/powerpc/boot/rb333.c
+@@ -0,0 +1,73 @@
++/*
++ * The RouterBOARD platform -- for booting RB333 RouterBOARDs.
++ *
++ * Author: Alexandros C. Couloumbis  <alex@ozo.com>
++ * Author: Michael Guntsche <mike@it-loops.com>
++ *
++ * Copyright (c) 2010 Alexandros C. Couloumbis
++ * Copyright (c) 2009 Michael Guntsche
++ *
++ * This program is free software; you can redistribute it and/or modify it
++ * under the terms of the GNU General Public License version 2 as published
++ * by the Free Software Foundation.
++ */
++
++#include "ops.h"
++#include "types.h"
++#include "io.h"
++#include "stdio.h"
++#include <libfdt.h>
++
++BSS_STACK(4*1024);
++
++u64 memsize64;
++const void *fw_dtb;
++
++static void rb333_fixups(void)
++{
++	const u32 *reg, *timebase, *clock;
++	int node, size;
++	void *chosen;
++	const char* bootargs;
++
++	dt_fixup_memory(0, memsize64);
++
++	/* Find the CPU timebase and clock frequencies. */
++	node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "cpu", sizeof("cpu"));
++	timebase = fdt_getprop(fw_dtb, node, "timebase-frequency", &size);
++	clock = fdt_getprop(fw_dtb, node, "clock-frequency", &size);
++	dt_fixup_cpu_clocks(*clock, *timebase, 0);
++
++	/* Fixup chosen
++	 * The bootloader reads the kernelparm segment and adds the content to
++	 * bootargs. This is needed to specify root and other boot flags.
++	 */
++	chosen = finddevice("/chosen");
++	node = fdt_path_offset(fw_dtb, "/chosen");
++	bootargs = fdt_getprop(fw_dtb, node, "bootargs", &size);
++	setprop_str(chosen, "bootargs", bootargs);
++}
++
++void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
++		   unsigned long r6, unsigned long r7)
++{
++	const u32 *reg;
++	int node, size;
++
++	fw_dtb = (const void *)r3;
++	
++	/* Find the memory range. */
++	node = fdt_node_offset_by_prop_value(fw_dtb, -1, "device_type", "memory", sizeof("memory"));
++	reg = fdt_getprop(fw_dtb, node, "reg", &size);
++	memsize64 = reg[1];
++
++	/* Now we have the memory size; initialize the heap. */
++	simple_alloc_init(_end, memsize64 - (unsigned long)_end, 32, 64);
++
++	/* Prepare the device tree and find the console. */
++	fdt_init(_dtb_start);
++	serial_console_init();
++
++	/* Remaining fixups... */
++	platform_ops.fixups = rb333_fixups;
++}