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MX31: Introduce get_reset_cause()

PATCH New Fabio Estevam 3 participants 4 messages Apr 18, 2011 – Apr 20, 2011 Arm (32-bit)

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Fabio Estevam

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#0 lore raw

PATCH v5 1/1 MX31: Introduce get_reset_cause()

Signed-off-by Fabio Estevam <[email protected]>

---
Changes since v4:
- Make get_reset_cause CPU specific code and no need to add any board specific call.

 arch/arm/cpu/arm1136/mx31/generic.c |   29 ++++++++++++++++++++++++++++-
 1 files changed, 28 insertions(+), 1 deletions(-)
arch/arm/cpu/arm1136/mx31/generic.c +28 -1
index 9b7a7a2..a92731e 100644
@@ -132,11 +132,38 @@ char *get_cpu_rev(void)
 		return "unknown";
 }
 
+char *get_reset_cause(void)
+{
+	/* read RCSR register from CCM module */
+	struct clock_control_regs *ccm =
+		(struct clock_control_regs *)CCM_BASE;
+
+	u32 cause = readl(&ccm->rcsr) & 0x07;
+
+	switch (cause) {
+	case 0x0000:
+		return "POR";
+		break;
+	case 0x0001:
+		return "RST";
+		break;
+	case 0x0002:
+		return "WDOG";
+		break;
+	case 0x0006:
+		return "JTAG";
+		break;
+	default:
+		return "unknown reset";
+	}
+}
+
 #if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo (void)
 {
-	printf("CPU:   Freescale i.MX31 rev %s at %d MHz\n",
+	printf("CPU:   Freescale i.MX31 rev %s at %d MHz.",
 			get_cpu_rev(), mx31_get_mcu_main_clk() / 1000000);
+	printf("Reset cause: %s\n", get_reset_cause());
 	return 0;
 }
 #endif
Signature · 1 line
1.6.0.4
author
#1 lore raw

PATCH 1/1 MX31: mx31pdk: Make the board name simpler.

Signed-off-by Fabio Estevam <[email protected]>
---
 board/freescale/mx31pdk/mx31pdk.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
board/freescale/mx31pdk/mx31pdk.c +1 -1
index 3f291fc..826fb4a 100644
@@ -70,7 +70,7 @@ int board_init(void)
 
 int checkboard(void)
 {
-	printf("Board: i.MX31 MAX PDK (3DS)\n");
+	printf("Board: MX31PDK\n");
 	return 0;
 }
Signature · 1 line
1.6.0.4
#2 lore raw

PATCH v5 1/1 MX31: Introduce get_reset_cause()

In reply to Fabio Estevam

Hi Fabio,

Quoted 8 lines
Signed-off-by Fabio Estevam <[email protected]>

---
Changes since v4:
- Make get_reset_cause CPU specific code and no need to add any board specific call.

 arch/arm/cpu/arm1136/mx31/generic.c |   29 ++++++++++++++++++++++++++++-
 1 files changed, 28 insertions(+), 1 deletions(-)

Thanks, this looks good. Now all i.MX31 boards profit!

Acked-by Detlev Zundel <[email protected]>
Signature · 7 lines
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#3 lore raw

PATCH v5 1/1 MX31: Introduce get_reset_cause()

Le 19/04/2011 17:17, Detlev Zundel a ?crit :

Quoted 8 lines

Hi Fabio,

Quoted 6 lines
Signed-off-by Fabio Estevam<[email protected]>

---
Changes since v4:
- Make get_reset_cause CPU specific code and no need to add any board specific call.

Quoted 6 lines
Quoted 2 lines
  arch/arm/cpu/arm1136/mx31/generic.c |   29 ++++++++++++++++++++++++++++-
  1 files changed, 28 insertions(+), 1 deletions(-)

Thanks, this looks good. Now all i.MX31 boards profit!

Acked-by Detlev Zundel<[email protected]>

Stefano, does this get in your tree?

Amicalement,

Signature · 1 line
Albert.