[POWERPC] 83xx: Add support for Analogue & Micro ASP837E board

The following adds support for the Analogue & Micro ASP 8347E, running
Redboot.

http://www.analogue-micro.com/ASP8347.html

Signed-off-by: Bryan O'Donoghue <bodonoghue@codehermit.ie>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 60 insertions, 0 deletions

diff --git a/arch/powerpc/boot/redboot-83xx.c b/arch/powerpc/boot/redboot-83xx.c
new file mode 100644
index 000000000000..79aa9e151fa7
--- /dev/null
+++ b/arch/powerpc/boot/redboot-83xx.c
@@ -0,0 +1,60 @@
+/*
+ * RedBoot firmware support
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2008 Codehermit
+ *
+ * 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 "stdio.h"
+#include "redboot.h"
+#include "fsl-soc.h"
+#include "io.h"
+
+static bd_t bd;
+BSS_STACK(4096);
+
+#define MHZ(x)  ((x + 500000) / 1000000)
+
+static void platform_fixups(void)
+{
+        void *node;
+
+        dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
+        dt_fixup_mac_addresses(bd.bi_enetaddr);
+        dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 16, bd.bi_busfreq);
+
+        node = finddevice("/soc/cpm/brg");
+        if (node) {
+                printf("BRG clock-frequency <- 0x%x (%dMHz)\r\n",
+                       bd.bi_busfreq, MHZ(bd.bi_busfreq));
+                setprop(node, "clock-frequency",  &bd.bi_busfreq, 4);
+        }
+
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                   unsigned long r6, unsigned long r7)
+{
+        memcpy(&bd, (char *)r3, sizeof(bd));
+
+        if (bd.bi_tag != 0x42444944)
+                return;
+
+        simple_alloc_init(_end,
+                          bd.bi_memstart + bd.bi_memsize - (unsigned long)_end,
+                          32, 64);
+
+        fdt_init(_dtb_start);
+        serial_console_init();
+        platform_ops.fixups = platform_fixups;
+
+        loader_info.cmdline = (char *)bd.bi_cmdline;
+        loader_info.cmdline_len = strlen((char *)bd.bi_cmdline);
+}