[PATCH 08/10] ARM: VFxxx: Add code to detect reset reason
Andrey Smirnov
andrew.smirnov at gmail.com
Sat Apr 14 10:50:22 PDT 2018
Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
arch/arm/mach-imx/imx.c | 78 +++++++++++++++++----------
arch/arm/mach-imx/include/mach/reset-reason.h | 11 ++++
2 files changed, 62 insertions(+), 27 deletions(-)
diff --git a/arch/arm/mach-imx/imx.c b/arch/arm/mach-imx/imx.c
index fb1160de9..e84713766 100644
--- a/arch/arm/mach-imx/imx.c
+++ b/arch/arm/mach-imx/imx.c
@@ -158,6 +158,7 @@ void imx_set_reset_reason(void __iomem *srsr)
{
enum reset_src_type type = RESET_UKWN;
const u32 reg = readl(srsr);
+ const bool is_vf610 = cpu_is_vf610();
/*
* SRSR register captures ALL reset event that occured since
@@ -166,37 +167,60 @@ void imx_set_reset_reason(void __iomem *srsr)
*/
writel(reg, srsr);
- switch (reg) {
- case IMX_SRC_SRSR_IPP_RESET: /* FALLTHROUGH */
- case IMX_SRC_SRSR_IPP_RESET | IMX_SRC_SRSR_WDOG1_RESET:
- type = RESET_POR;
- break;
- case IMX_SRC_SRSR_WDOG3_RESET: /* FALLTHROUGH */
- case IMX_SRC_SRSR_WDOG4_RESET: /* FALLTHROUGH */
- case IMX_SRC_SRSR_WDOG1_RESET:
- type = RESET_WDG;
- break;
- case IMX_SRC_SRSR_JTAG_RESET: /* FALLTHROUGH */
- case IMX_SRC_SRSR_JTAG_SW_RESET:
- type = RESET_JTAG;
- break;
- case IMX_SRC_SRSR_TEMPSENSE_RESET:
- type = RESET_THERM;
- break;
- case IMX_SRC_SRSR_WARM_BOOT:
- type = RESET_RST;
- break;
+ if (is_vf610) {
+ /*
+ * Layout of SRSR on Vybrid is quite different so we
+ * handle it separately.
+ */
+ if (reg & VF610_SRC_SRSR_POR_RST) {
+ type = RESET_POR;
+ } else if (reg & VF610_SRC_SRSR_WDOG_xx) {
+ type = RESET_WDG;
+ } else if (reg & VF610_SRC_SRSR_JTAG_RST) {
+ type = RESET_JTAG;
+ } else if (reg & VF610_SRC_SRSR_SW_RST) {
+ type = RESET_RST;
+ } else if (reg & VF610_SRC_SRSR_RESETB) {
+ type = RESET_EXT;
+ }
+ } else {
+ switch (reg) {
+ case IMX_SRC_SRSR_IPP_RESET: /* FALLTHROUGH */
+ case IMX_SRC_SRSR_IPP_RESET | IMX_SRC_SRSR_WDOG1_RESET:
+ type = RESET_POR;
+ break;
+ case IMX_SRC_SRSR_WDOG3_RESET: /* FALLTHROUGH */
+ case IMX_SRC_SRSR_WDOG4_RESET: /* FALLTHROUGH */
+ case IMX_SRC_SRSR_WDOG1_RESET:
+ type = RESET_WDG;
+ break;
+ case IMX_SRC_SRSR_JTAG_RESET: /* FALLTHROUGH */
+ case IMX_SRC_SRSR_JTAG_SW_RESET:
+ type = RESET_JTAG;
+ break;
+ case IMX_SRC_SRSR_TEMPSENSE_RESET:
+ type = RESET_THERM;
+ break;
+ case IMX_SRC_SRSR_WARM_BOOT:
+ type = RESET_RST;
+ break;
+ }
}
reset_source_set(type);
- switch (reg) {
- case IMX_SRC_SRSR_WDOG3_RESET:
- reset_source_set_instance(type, 1);
- break;
- case IMX_SRC_SRSR_WDOG4_RESET:
- reset_source_set_instance(type, 2);
- break;
+ if (is_vf610) {
+ if (reg & VF610_SRC_SRSR_WDOG_M4)
+ reset_source_set_instance(type, 1);
+ } else {
+ switch (reg) {
+ case IMX_SRC_SRSR_WDOG3_RESET:
+ reset_source_set_instance(type, 1);
+ break;
+ case IMX_SRC_SRSR_WDOG4_RESET:
+ reset_source_set_instance(type, 2);
+ break;
+ }
}
pr_info("i.MX reset reason %s (SRSR: 0x%08x)\n",
diff --git a/arch/arm/mach-imx/include/mach/reset-reason.h b/arch/arm/mach-imx/include/mach/reset-reason.h
index a8a9dc682..543fec4a1 100644
--- a/arch/arm/mach-imx/include/mach/reset-reason.h
+++ b/arch/arm/mach-imx/include/mach/reset-reason.h
@@ -14,6 +14,17 @@
#define IMX6_SRC_SRSR 0x008
#define IMX7_SRC_SRSR 0x05c
+#define VF610_SRC_SRSR 0x008
+
+
+#define VF610_SRC_SRSR_SW_RST BIT(18)
+#define VF610_SRC_SRSR_RESETB BIT(7)
+#define VF610_SRC_SRSR_JTAG_RST BIT(5)
+#define VF610_SRC_SRSR_WDOG_M4 BIT(4)
+#define VF610_SRC_SRSR_WDOG_A5 BIT(3)
+#define VF610_SRC_SRSR_WDOG_xx (VF610_SRC_SRSR_WDOG_A5 | \
+ VF610_SRC_SRSR_WDOG_M4)
+#define VF610_SRC_SRSR_POR_RST BIT(0)
void imx_set_reset_reason(void __iomem *srsr);
--
2.14.3
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