add ft_cpu_setup(..) on mpc8260

Add ft_cpu_setup(..)-function to adapt it for use with libfdt
based on code from mpc5xxx

Sigend-off-by: Sergej Stepanov <Sergej.Stepanov@ids.de>
--

1 files changed, 38 insertions, 0 deletions

diff --git a/cpu/mpc8260/cpu.c b/cpu/mpc8260/cpu.c
index 94651dc4a..c2b753d6b 100644
--- a/cpu/mpc8260/cpu.c
+++ b/cpu/mpc8260/cpu.c
@@ -47,6 +47,11 @@
 #include <asm/processor.h>
 #include <asm/cpm_8260.h>
 
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#include <libfdt_env.h>
+#endif
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #if defined(CONFIG_GET_CPU_STR_F)
@@ -294,3 +299,36 @@ void watchdog_reset (void)
 #endif /* CONFIG_WATCHDOG */
 
 /* ------------------------------------------------------------------------- */
+#if defined(CONFIG_OF_LIBFDT)
+static void do_fixup(void *fdt, const char *node, const char *prop,
+			const void *val, int len, int create)
+{
+#if defined(DEBUG)
+	int i;
+	debug("Updating property '%s/%s' = ", node, prop);
+	for (i = 0; i < len; i++)
+		debug(" %.2x", *(u8*)(val+i));
+	debug("\n");
+#endif
+	int rc = fdt_find_and_setprop(fdt, node, prop, val, len, create);
+	if (rc)
+		printf("Unable to update property %s:%s, err=%s\n",
+			node, prop, fdt_strerror(rc));
+}
+
+static void do_fixup_u32(void *fdt, const char *node, const char *prop,
+			 u32 val, int create)
+{
+	val = cpu_to_fdt32(val);
+	do_fixup(fdt, node, prop, &val, sizeof(val), create);
+}
+
+void ft_cpu_setup (void *blob, bd_t *bd)
+{
+	char * cpu_path = "/cpus/" OF_CPU;
+
+	do_fixup_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
+	do_fixup_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
+	do_fixup_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
+}
+#endif /* CONFIG_OF_LIBFDT */