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--- /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;
+}
|
