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

York Sun
2015-03-19T16:45:47Z

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

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

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