commit be52372ff1bb52872e20543562b095424f040564
author T Karthik Reddy <t.karthik.reddy@xilinx.com> Wed Mar 13 20:24:18 2019 +0530
committer Michal Simek <michal.simek@xilinx.com> Tue Apr 16 11:51:34 2019 +0200
tree 5f045d7122601f9062811dd05f2e7cf1eef571f3
parent 1a474381b6f709582c5d71d0d7cc826ab96f8411

arm64: zynqmp: Use zynqmp_mmio_read/write functions

Changed the return type of reset_reason() to int from u32, because
zynqmp_mmio_read/write() returns signed value on error.
Replaced readl and writel functions with zynqmp_mmio_read &
zynqmp_mmio_write functions to access RESET_REASON(CRL_APB) registers.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/zynqmp/zynqmp.c

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index db27247..1e9e441 100644
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -482,18 +482,20 @@
 	{}
 };
 
-static u32 reset_reason(void)
+static int reset_reason(void)
 {
-	u32 ret;
-	int i;
+	u32 reg;
+	int i, ret;
 	const char *reason = NULL;
 
-	ret = readl(&crlapb_base->reset_reason);
+	ret = zynqmp_mmio_read((ulong)&crlapb_base->reset_reason, &reg);
+	if (ret)
+		return -EINVAL;
 
 	puts("Reset reason:\t");
 
 	for (i = 0; i < ARRAY_SIZE(reset_reasons); i++) {
-		if (ret & reset_reasons[i].bit) {
+		if (reg & reset_reasons[i].bit) {
 			reason = reset_reasons[i].name;
 			printf("%s ", reset_reasons[i].name);
 			break;
@@ -504,7 +506,9 @@
 
 	env_set("reset_reason", reason);
 
-	writel(~0, &crlapb_base->reset_reason);
+	ret = zynqmp_mmio_write(~0, ~0, (ulong)&crlapb_base->reset_reason);
+	if (ret)
+		return -EINVAL;
 
 	return ret;
 }