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>

diff --git a/board/xilinx/zynqmp/zynqmp.c b/board/xilinx/zynqmp/zynqmp.c
index db27247..1e9e441 100644 (file)
--- a/board/xilinx/zynqmp/zynqmp.c
+++ b/board/xilinx/zynqmp/zynqmp.c
@@ -482,18 +482,20 @@ static const struct {
        {}
 };
 
-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 @@ static u32 reset_reason(void)
 
        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;
 }