1 files changed, 57 insertions, 0 deletions
diff --git a/arch/powerpc/boot/redboot-83xx.c b/arch/powerpc/boot/redboot-83xx.c
new file mode 100644
index 000000000..b610e78b4
--- /dev/null
+++ b/arch/powerpc/boot/redboot-83xx.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * RedBoot firmware support
+ *
+ * Author: Scott Wood <scottwood@freescale.com>
+ *
+ * Copyright (c) 2007 Freescale Semiconductor, Inc.
+ * Copyright (c) 2008 Codehermit
+ */
+
+#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);
+}