[U-Boot] [PATCH 8/9] kmp204x/qrio: support for setting the CPU reset request mode

[Rainer Boschung]

To acheive this, the qrio_uprstreq() function that sets the UPRSTREQN
flag in the qrio RESCNF reg is added.

Signed-off-by: Rainer Boschung <rainer.boschung at keymile.com>
Signed-off-by: Valentin Longchamp <valentin.longchamp at keymile.com>
---
 board/keymile/kmp204x/kmp204x.h |  5 +++++
 board/keymile/kmp204x/qrio.c    | 17 +++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/board/keymile/kmp204x/kmp204x.h b/board/keymile/kmp204x/kmp204x.h
index 64c0afb..e90e8ab 100644
--- a/board/keymile/kmp204x/kmp204x.h
+++ b/board/keymile/kmp204x/kmp204x.h
@@ -27,4 +27,9 @@ void qrio_enable_app_buffer(void);
 void qrio_cpuwd_flag(bool flag);
 int qrio_reset_reason(void);
 
+#define UPREQ_UNIT_RST		0x0
+#define UPREQ_CORE_RST		0x1
+
+void qrio_uprstreq(u8 mode);
+
 void pci_of_setup(void *blob, bd_t *bd);
diff --git a/board/keymile/kmp204x/qrio.c b/board/keymile/kmp204x/qrio.c
index 92e8022..edf3bf1 100644
--- a/board/keymile/kmp204x/qrio.c
+++ b/board/keymile/kmp204x/qrio.c
@@ -188,3 +188,20 @@ void qrio_cpuwd_flag(bool flag)
 		reason1 &= ~REASON1_CPUWD;
 	out_8(qrio_base + REASON1_OFF, reason1);
 }
+
+#define RSTCFG_OFF	0x11
+
+void qrio_uprstreq(u8 mode)
+{
+	u32 rstcfg;
+	void __iomem *qrio_base = (void *)CONFIG_SYS_QRIO_BASE;
+
+	rstcfg = in_8(qrio_base + RSTCFG_OFF);
+
+	if (mode & UPREQ_CORE_RST)
+		rstcfg |= UPREQ_CORE_RST;
+	else
+		rstcfg &= ~UPREQ_CORE_RST;
+
+	out_8(qrio_base + RSTCFG_OFF, rstcfg);
+}
-- 
1.8.0.1