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arm64: zynqmp: Use zynqmp_mmio_read/write functions

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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>
This commit is contained in:
T Karthik Reddy 2019-03-13 20:24:18 +05:30 • committed by Michal Simek
parent 1a474381b6
commit be52372ff1
1 changed files with 10 additions and 6 deletions

16
board/xilinx/zynqmp/zynqmp.c
View file

@ -482,18 +482,20 @@ static const struct {
{} {}
}; };
static u32 reset_reason(void) static int reset_reason(void)
{ {
u32 ret; u32 reg;
int i; int i, ret;
const char *reason = NULL; 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"); puts("Reset reason:\t");
for (i = 0; i < ARRAY_SIZE(reset_reasons); i++) { 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; reason = reset_reasons[i].name;
printf("%s ", reset_reasons[i].name); printf("%s ", reset_reasons[i].name);
break; break;
@ -504,7 +506,9 @@ static u32 reset_reason(void)
env_set("reset_reason", reason); 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; return ret;
} }