ppc4xx: Bring 4xx fdt support up-to-date

This patch update the 4xx fdt support. It enabled fdt booting
on the AMCC Kilauea and Sequoia for now. More can follow later
quite easily.

Signed-off-by: Stefan Roese <sr@denx.de>

board/amcc/kilauea/kilauea.c

@@ -25,6 +25,7 @@
 #include <ppc4xx.h>
 #include <ppc405.h>
 #include <libfdt.h>
+#include <fdt_support.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 

board/amcc/sequoia/sequoia.c

@@ -23,9 +23,11 @@
  */
 
 #include <common.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <ppc440.h>
 #include <asm/processor.h>
 #include <asm/io.h>
-#include <ppc440.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -583,3 +585,24 @@ int post_hotkeys_pressed(void)
 	return 0;	/* No hotkeys supported */
 }
 #endif /* CONFIG_POST */
+
+#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
+void ft_board_setup(void *blob, bd_t *bd)
+{
+	u32 val[4];
+	int rc;
+
+	ft_cpu_setup(blob, bd);
+
+	/* Fixup NOR mapping */
+	val[0] = 0;				/* chip select number */
+	val[1] = 0;				/* always 0 */
+	val[2] = gd->bd->bi_flashstart;
+	val[3] = gd->bd->bi_flashsize;
+	rc = fdt_find_and_setprop(blob, "/plb/opb/ebc", "ranges",
+				  val, sizeof(val), 1);
+	if (rc)
+		printf("Unable to update property NOR mapping, err=%s\n",
+		       fdt_strerror(rc));
+}
+#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */

cpu/ppc4xx/fdt.c

@@ -35,25 +35,18 @@
 #if defined(CONFIG_OF_LIBFDT)
 #include <libfdt.h>
 #include <libfdt_env.h>
+#include <fdt_support.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
-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("(%d)\n", *(u32 *)val);
-#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));
-}
+/*
+ * The aliases needed for this generic etherne MAC address
+ * fixup function are not in place yet. So don't use this
+ * approach for now. This will be enabled later.
+ */
+#undef USES_FDT_ALIASES
 
+#ifndef USES_FDT_ALIASES
 static void do_fixup_macaddr(void *fdt, int offset, const void *val, int i)
 {
 	int rc;
@@ -69,87 +62,47 @@ static void do_fixup_macaddr(void *fdt, int offset, const void *val, int i)
 		printf("Unable to update property %s, err=%s\n",
 		       "local-mac-address", 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);
-}
-
-static void do_fixup_uart(void *fdt, int offset, int i, bd_t *bd)
-{
-	int rc;
-	u32 val;
-	PPC4xx_SYS_INFO sys_info;
-
-	get_sys_info(&sys_info);
-
-	debug("Updating node UART%d: clock-frequency=%d\n", i, gd->uart_clk);
-
-	val = cpu_to_fdt32(gd->uart_clk);
-	rc = fdt_setprop(fdt, offset, "clock-frequency", &val, 4);
-	if (rc)
-		printf("Unable to update node UART, err=%s\n", fdt_strerror(rc));
-
-	val = cpu_to_fdt32(bd->bi_baudrate);
-	rc = fdt_setprop(fdt, offset, "current-speed", &val, 4);
-	if (rc)
-		printf("Unable to update node UART, err=%s\n", fdt_strerror(rc));
-}
+#endif /* USES_FDT_ALIASES */
 
 void ft_cpu_setup(void *blob, bd_t *bd)
 {
-	char * cpu_path = "/cpus/" OF_CPU;
+	char *cpu_path = "/cpus/" OF_CPU;
 	sys_info_t sys_info;
 	int offset;
 	int i;
-	int tmp[2];
 
-	get_sys_info (&sys_info);
+	get_sys_info(&sys_info);
 
-	do_fixup_u32(blob, cpu_path, "timebase-frequency", bd->bi_intfreq, 1);
-	do_fixup_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
-	do_fixup_u32(blob, "/plb", "clock-frequency", sys_info.freqPLB, 1);
-	do_fixup_u32(blob, "/plb/opb", "clock-frequency", sys_info.freqOPB, 1);
-	do_fixup_u32(blob, "/plb/opb/ebc", "clock-frequency", sys_info.freqEBC, 1);
-
-	/* update, or add and update /memory node */
-	offset = fdt_find_node_by_path(blob, "/memory");
-	if (offset < 0) {
-		offset = fdt_add_subnode(blob, 0, "memory");
-		if (offset < 0)
-			debug("failed to add /memory node: %s\n",
-			      fdt_strerror(offset));
-	}
-	if (offset >= 0) {
-		fdt_setprop(blob, offset, "device_type",
-			    "memory", sizeof("memory"));
-		tmp[0] = cpu_to_fdt32(bd->bi_memstart);
-		tmp[1] = cpu_to_fdt32(bd->bi_memsize);
-		fdt_setprop(blob, offset, "reg", tmp, sizeof(tmp));
-		debug("Updating /memory node to %d:%d\n",
-		      bd->bi_memstart, bd->bi_memsize);
-	}
+	do_fixup_by_path_u32(blob, cpu_path, "timebase-frequency", bd->bi_intfreq, 1);
+	do_fixup_by_path_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
+	do_fixup_by_path_u32(blob, "/plb", "clock-frequency", sys_info.freqPLB, 1);
+	do_fixup_by_path_u32(blob, "/plb/opb", "clock-frequency", sys_info.freqOPB, 1);
+	do_fixup_by_path_u32(blob, "/plb/opb/ebc", "clock-frequency",
+			     sys_info.freqEBC, 1);
+	fdt_fixup_memory(blob, (u64)bd->bi_memstart, (u64)bd->bi_memsize);
 
 	/*
 	 * Setup all baudrates for the UARTs
 	 */
-	offset = 0;
-	for (i = 0; i < 4; i++) {
-		offset = fdt_find_node_by_type(blob, offset, "serial");
-		if (offset < 0)
-			break;
-
-		do_fixup_uart(blob, offset, i, bd);
-	}
+	do_fixup_by_compat_u32(blob, "ns16550", "clock-frequency", gd->uart_clk, 1);
 
+#ifdef USES_FDT_ALIASES
 	/*
-	 * Setup all MAC addresses in fdt
+	 * The aliases needed for this generic etherne MAC address
+	 * fixup function are not in place yet. So don't use this
+	 * approach for now. This will be enabled later.
 	 */
-	offset = 0;
+	fdt_fixup_ethernet(blob, bd);
+#else
+	offset = -1;
 	for (i = 0; i < 4; i++) {
-		offset = fdt_find_node_by_type(blob, offset, "network");
+		/*
+		 * FIXME: This will cause problems with emac3 compatible
+		 * devices, like on 405GP. But hopefully when we deal
+		 * with those devices, the aliases stuff will be in
+		 * place.
+		 */
+		offset = fdt_node_offset_by_compatible(blob, offset, "ibm,emac4");
 		if (offset < 0)
 			break;
 
@@ -174,5 +127,6 @@ void ft_cpu_setup(void *blob, bd_t *bd)
 #endif
 		}
 	}
+#endif /* USES_FDT_ALIASES */
 }
 #endif /* CONFIG_OF_LIBFDT */

include/configs/kilauea.h

@@ -519,7 +519,6 @@
 /* pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT	1
 #define CONFIG_OF_BOARD_SETUP	1
-
-#define OF_CPU			"PowerPC,405EX@0"
+#define OF_CPU			"cpu@0"
 
 #endif	/* __CONFIG_H */

include/configs/sequoia.h

@@ -487,4 +487,10 @@
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */
 #define CONFIG_KGDB_SER_INDEX	2	    /* which serial port to use */
 #endif
+
+/* pass open firmware flat tree */
+#define CONFIG_OF_LIBFDT	1
+#define CONFIG_OF_BOARD_SETUP	1
+#define OF_CPU			"cpu@0"
+
 #endif	/* __CONFIG_H */