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authorGerald Van Baren <vanbaren@cideas.com>2007-03-31 12:23:51 -0400
committerGerald Van Baren <vanbaren@cideas.com>2007-03-31 12:23:51 -0400
commit213bf8c822de8eecaf69860684469cdaba2e9e6a (patch)
tree178e19684d4024081de2caa27ec5f1806846672f /cpu/mpc83xx
parent781e09ee6e3e3e392ab362c1f0ef1068adc76e3e (diff)
Add a flattened device tree (fdt) command (2 of 2)
Modifications to the existing code to support the new fdt command.
Diffstat (limited to 'cpu/mpc83xx')
-rw-r--r--cpu/mpc83xx/cpu.c102
1 files changed, 101 insertions, 1 deletions
diff --git a/cpu/mpc83xx/cpu.c b/cpu/mpc83xx/cpu.c
index e4bc4052db5..851241adfb4 100644
--- a/cpu/mpc83xx/cpu.c
+++ b/cpu/mpc83xx/cpu.c
@@ -30,8 +30,14 @@
#include <watchdog.h>
#include <command.h>
#include <mpc83xx.h>
-#include <ft_build.h>
#include <asm/processor.h>
+#if defined(CONFIG_OF_FLAT_TREE)
+#include <ft_build.h>
+#endif
+#if defined(CONFIG_OF_LIBFDT)
+#include <libfdt.h>
+#include <libfdt_env.h>
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -291,6 +297,100 @@ void watchdog_reset (void)
}
#endif
+#if defined(CONFIG_OF_LIBFDT)
+
+/*
+ * Fixups to the fdt. If "create" is TRUE, the node is created
+ * unconditionally. If "create" is FALSE, the node is updated
+ * only if it already exists.
+ */
+#define FT_UPDATE 0x00000000 /* update existing property only */
+#define FT_CREATE 0x00000001 /* create property if it doesn't exist */
+#define FT_BUSFREQ 0x00000002 /* source is bd->bi_busfreq */
+#define FT_ENETADDR 0x00000004 /* source is bd->bi_enetaddr */
+static const struct {
+ int createflags;
+ char *node;
+ char *prop;
+} fixup_props[] = {
+ { FT_CREATE | FT_BUSFREQ,
+ "/cpus/" OF_CPU,
+ "bus-frequency",
+ },
+ { FT_CREATE | FT_BUSFREQ,
+ "/cpus/" OF_SOC,
+ "bus-frequency"
+ },
+ { FT_CREATE | FT_BUSFREQ,
+ "/" OF_SOC "/serial@4500/",
+ "clock-frequency"
+ },
+ { FT_CREATE | FT_BUSFREQ,
+ "/" OF_SOC "/serial@4600/",
+ "clock-frequency"
+ },
+#ifdef CONFIG_MPC83XX_TSEC1
+ { FT_UPDATE | FT_ENETADDR,
+ "/" OF_SOC "/ethernet@24000,
+ "mac-address",
+ },
+ { FT_UPDATE | FT_ENETADDR,
+ "/" OF_SOC "/ethernet@24000,
+ "local-mac-address",
+ },
+#endif
+#ifdef CONFIG_MPC83XX_TSEC2
+ { FT_UPDATE | FT_ENETADDR,
+ "/" OF_SOC "/ethernet@25000,
+ "mac-address",
+ },
+ { FT_UPDATE | FT_ENETADDR,
+ "/" OF_SOC "/ethernet@25000,
+ "local-mac-address",
+ },
+#endif
+};
+
+void
+ft_cpu_setup(void *blob, bd_t *bd)
+{
+ int nodeoffset;
+ int err;
+ int j;
+
+ for (j = 0; j < (sizeof(fixup_props) / sizeof(fixup_props[0])); j++) {
+ nodeoffset = fdt_path_offset (fdt, fixup_props[j].node);
+ if (nodeoffset >= 0) {
+ /*
+ * If unconditional create or the property already exists...
+ */
+ if ((fixup_props[j].createflags & FT_CREATE) ||
+ (fdt_get_property(fdt, nodeoffset, fixup_props[j].prop, 0))) {
+ if (fixup_props[j].createflags & FT_BUSFREQ) {
+ u32 tmp;
+
+ tmp = cpu_to_be32(bd->bi_busfreq);
+ err = fdt_setprop(fdt, nodeoffset,
+ fixup_props[j].prop, &tmp, sizeof(tmp));
+ } else if (fixup_props[j].createflags & FT_ENETADDR) {
+ err = fdt_setprop(fdt, nodeoffset,
+ fixup_props[j].prop, bd->bi_enetaddr, 6);
+ } else {
+ printf("ft_cpu_setup: %s %s has no flag for the value to set\n",
+ fixup_props[j].node,
+ fixup_props[j].prop);
+ }
+ if (err < 0)
+ printf("libfdt: %s %s returned %s\n",
+ fixup_props[j].node,
+ fixup_props[j].prop,
+ fdt_strerror(err));
+ }
+ }
+ }
+}
+#endif
+
#if defined(CONFIG_OF_FLAT_TREE)
void
ft_cpu_setup(void *blob, bd_t *bd)