diff options
Diffstat (limited to 'target/linux/mpc83xx/patches-2.6.36/003-boot_rb600.patch')
| -rw-r--r-- | target/linux/mpc83xx/patches-2.6.36/003-boot_rb600.patch | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/target/linux/mpc83xx/patches-2.6.36/003-boot_rb600.patch b/target/linux/mpc83xx/patches-2.6.36/003-boot_rb600.patch new file mode 100644 index 0000000000..c199bdfd42 --- /dev/null +++ b/target/linux/mpc83xx/patches-2.6.36/003-boot_rb600.patch @@ -0,0 +1,83 @@ +--- /dev/null ++++ b/arch/powerpc/boot/rb600.c +@@ -0,0 +1,80 @@ ++/* ++ * The RouterBOARD platform -- for booting RB600(A) RouterBOARDs. ++ * ++ * Author: Michael Guntsche <mike@it-loops.com> ++ * ++ * 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 rb600_fixups(void) ++{ ++ const u32 *reg, *timebase, *clock; ++ int node, size; ++ void *chosen; ++ const char* bootargs; ++ ++ dt_fixup_memory(0, memsize64); ++ ++ /* Set the MAC addresses. */ ++ node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@24000"); ++ reg = fdt_getprop(fw_dtb, node, "mac-address", &size); ++ dt_fixup_mac_address_by_alias("ethernet1", (const u8 *)reg); ++ ++ node = fdt_path_offset(fw_dtb, "/soc8343@e0000000/ethernet@25000"); ++ reg = fdt_getprop(fw_dtb, node, "mac-address", &size); ++ dt_fixup_mac_address_by_alias("ethernet0", (const u8 *)reg); ++ ++ /* 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 = rb600_fixups; ++} |