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>

diff --git a/board/amcc/kilauea/kilauea.c b/board/amcc/kilauea/kilauea.c
index 96c0dd4..2ee896a 100644 (file)
--- a/board/amcc/kilauea/kilauea.c
+++ b/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>
 

diff --git a/board/amcc/sequoia/sequoia.c b/board/amcc/sequoia/sequoia.c
index 4e47ab3..f81f071 100644 (file)
--- a/board/amcc/sequoia/sequoia.c
+++ b/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) */

diff --git a/cpu/ppc4xx/fdt.c b/cpu/ppc4xx/fdt.c
index dcedbbb..3ef3000 100644 (file)
--- a/cpu/ppc4xx/fdt.c
+++ b/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 */

diff --git a/include/configs/kilauea.h b/include/configs/kilauea.h
index e3f24a4..bec9fde 100644 (file)
--- a/include/configs/kilauea.h
+++ b/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 */

diff --git a/include/configs/sequoia.h b/include/configs/sequoia.h
index 2af675a..58acbc0 100644 (file)
--- a/include/configs/sequoia.h
+++ b/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 */