kmp204x/qrio: prepare support for the CPU watchdog reset reason
To achieve this, the qrio_cpuwd_flag() function that sets the CPU watchdog
flag in the REASON1 reg is added.
Signed-off-by: Rainer Boschung <rainer.boschung@keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/keymile/kmp204x/qrio.c b/board/keymile/kmp204x/qrio.c
index b6ba93a..92e8022 100644
--- a/board/keymile/kmp204x/qrio.c
+++ b/board/keymile/kmp204x/qrio.c
@@ -173,3 +173,18 @@
ctrll |= (CTRLL_WRB_BUFENA);
out_8(qrio_base + CTRLL_OFF, ctrll);
}
+
+#define REASON1_OFF 0x12
+#define REASON1_CPUWD 0x01
+
+void qrio_cpuwd_flag(bool flag)
+{
+ u8 reason1;
+ void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+ reason1 = in_8(qrio_base + REASON1_OFF);
+ if (flag)
+ reason1 |= REASON1_CPUWD;
+ else
+ reason1 &= ~REASON1_CPUWD;
+ out_8(qrio_base + REASON1_OFF, reason1);
+}