powerpc/corenet_ds: display the RCW at boot

Display the 64-byte Reset Configuration Word (RCW) during boot, so that
there's no confusion as to what RCW U-boot is using.

Reset Configuration Word (RCW):
       00000000: 4a500000 00000000 18181818 00008888
       00000010: 28402400 00002000 fe800000 01200000
       00000020: 00000000 00000000 00000000 000b0000
       00000030: 00000000 00000000 00000000 00000000

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/board/freescale/corenet_ds/corenet_ds.c b/board/freescale/corenet_ds/corenet_ds.c
index 68c63ac027b8844a98bf97071f7233cefb59d7ce..f183cf61d24ddb6800782100dd4aca5cb0acfc75 100644 (file)
--- a/board/freescale/corenet_ds/corenet_ds.c
+++ b/board/freescale/corenet_ds/corenet_ds.c
@@ -45,6 +45,8 @@ int checkboard (void)
 {
        u8 sw;
        struct cpu_type *cpu = gd->cpu;
+       ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+       unsigned int i;
 
        printf("Board: %sDS, ", cpu->name);
        printf("Sys ID: 0x%02x, Sys Ver: 0x%02x, FPGA Ver: 0x%02x, ",
@@ -66,6 +68,19 @@ int checkboard (void)
        puts("36-bit Addressing\n");
 #endif
 
+       /* Display the RCW, so that no one gets confused as to what RCW
+        * we're actually using for this boot.
+        */
+       puts("Reset Configuration Word (RCW):");
+       for (i = 0; i < ARRAY_SIZE(gur->rcwsr); i++) {
+               u32 rcw = in_be32(&gur->rcwsr[i]);
+
+               if ((i % 4) == 0)
+                       printf("\n       %08x:", i * 4);
+               printf(" %08x", rcw);
+       }
+       puts("\n");
+
        /* Display the actual SERDES reference clocks as configured by the
         * dip switches on the board.  Note that the SWx registers could
         * technically be set to force the reference clocks to match the