[POWERPC] 4xx: Base support for 440GX Taishan eval board

This patch adds base support for the AMCC Taishan 440GX evaluation
board.

Signed-off-by: Hugh Blemings <hugh@blemings.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>

1 files changed, 56 insertions, 0 deletions

diff --git a/arch/powerpc/boot/cuboot-taishan.c b/arch/powerpc/boot/cuboot-taishan.c
new file mode 100644
index 000000000000..4ef92021d012
--- /dev/null
+++ b/arch/powerpc/boot/cuboot-taishan.c
@@ -0,0 +1,56 @@
+/*
+ * Old U-boot compatibility for Taishan
+ *
+ * Author: Hugh Blemings <hugh@au.ibm.com>
+ *
+ * Copyright 2007 Hugh Blemings, IBM Corporation.
+ *   Based on cuboot-ebony.c which is:
+ * Copyright 2007 David Gibson, IBM Corporation.
+ *   Based on cuboot-83xx.c, which is:
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ *
+ * 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 "cuboot.h"
+#include "reg.h"
+#include "dcr.h"
+#include "4xx.h"
+
+#define TARGET_44x
+#include "ppcboot.h"
+
+static bd_t bd;
+
+BSS_STACK(4096);
+
+static void taishan_fixups(void)
+{
+        /* FIXME: sysclk should be derived by reading the FPGA
+           registers */
+        unsigned long sysclk = 33000000;
+
+        /* 440EP Clock logic is all but identical to 440GX
+           so we just use that code for now at least */
+        ibm440ep_fixup_clocks(sysclk, 6 * 1843200);
+
+        ibm4xx_fixup_memsize();
+
+        dt_fixup_mac_addresses(bd.bi_enetaddr, bd.bi_enet1addr);
+
+        ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                   unsigned long r6, unsigned long r7)
+{
+        CUBOOT_INIT();
+
+        platform_ops.fixups = taishan_fixups;
+        fdt_init(_dtb_start);
+        serial_console_init();
+}