[U-Boot] [PATCH v5 16/28] armv8/fsl-ch3: Add support to print RCW configuration

[York Sun]

From: Bhupesh Sharma <bhupesh.sharma at freescale.com>

This patch adds support to print out the Reset Configuration Word
information.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma at freescale.com>
Signed-off-by: York Sun <yorksun at freescale.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

 arch/arm/cpu/armv8/fsl-lsch3/cpu.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
index caa48f2..07064a3 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-lsch3/cpu.c
@@ -371,6 +371,7 @@ u32 fsl_qoriq_core_to_type(unsigned int core)
 #ifdef CONFIG_DISPLAY_CPUINFO
 int print_cpuinfo(void)
 {
+	struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR);
 	struct sys_info sysinfo;
 	char buf[32];
 	unsigned int i, core;
@@ -394,6 +395,19 @@ int print_cpuinfo(void)
 	printf("     DP-DDR:   %-4s MHz", strmhz(buf, sysinfo.freq_ddrbus2));
 	puts("\n");
 
+	/* 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_le32(&gur->rcwsr[i]);
+
+		if ((i % 4) == 0)
+			printf("\n       %02x:", i * 4);
+		printf(" %08x", rcw);
+	}
+	puts("\n");
+
 	return 0;
 }
 #endif
-- 
1.7.9.5