Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / powerpc / boot / cuboot-52xx.c

diff --git a/kernel/arch/powerpc/boot/cuboot-52xx.c b/kernel/arch/powerpc/boot/cuboot-52xx.c
new file mode 100644 (file)
index 0000000..4c42ec8
--- /dev/null
+++ b/kernel/arch/powerpc/boot/cuboot-52xx.c
@@ -0,0 +1,63 @@
+/*
+ * Old U-boot compatibility for MPC5200
+ *
+ * Author: Grant Likely <grant.likely@secretlab.ca>
+ *
+ * Copyright (c) 2007 Secret Lab Technologies Ltd.
+ * 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 "io.h"
+#include "cuboot.h"
+
+#define TARGET_PPC_MPC52xx
+#include "ppcboot.h"
+
+static bd_t bd;
+
+static void platform_fixups(void)
+{
+       void *soc, *reg;
+       int div;
+       u32 sysfreq;
+
+
+       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 / 4, bd.bi_busfreq);
+
+       /* Unfortunately, the specific model number is encoded in the
+        * soc node name in existing dts files -- once that is fixed,
+        * this can do a simple path lookup.
+        */
+       soc = find_node_by_devtype(NULL, "soc");
+       if (!soc)
+               soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
+       if (!soc)
+               soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
+       if (soc) {
+               setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
+                       sizeof(bd.bi_ipbfreq));
+
+               if (!dt_xlate_reg(soc, 0, (void*)&reg, NULL))
+                       return;
+               div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
+               sysfreq = bd.bi_busfreq * div;
+               setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
+       }
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+                   unsigned long r6, unsigned long r7)
+{
+       CUBOOT_INIT();
+       fdt_init(_dtb_start);
+       serial_console_init();
+       platform_ops.fixups = platform_fixups;
+}