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authorAlexandros C. Couloumbis <alex@ozo.com>2010-10-25 17:59:14 +0000
committerAlexandros C. Couloumbis <alex@ozo.com>2010-10-25 17:59:14 +0000
commite8e1084654f50904e6bf77b70b2de3f137d7b3ec (patch)
tree8333c5767087ec49b473467a4ca747fd31f574fd /target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch
parent0ee31ca22e253b027abd71d683e6f85350c6e2a9 (diff)
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linux/mpc83xx: add preliminary 2.6.36 kernel support
SVN-Revision: 23633
Diffstat (limited to 'target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch')
-rw-r--r--target/linux/mpc83xx/patches-2.6.36/022-boot_rb333.patch76
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;
++}