[U-Boot] [PATCH] powerpc/corenet_ds: display the RCW at boot

[Kumar Gala]

From: Timur Tabi <timur at freescale.com>

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 at freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang at freescale.com>
Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
---
 board/freescale/corenet_ds/corenet_ds.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/board/freescale/corenet_ds/corenet_ds.c b/board/freescale/corenet_ds/corenet_ds.c
index 68c63ac..f183cf6 100644
--- 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
-- 
1.7.2.3