Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 0a4b1e5c authored by Lingutla Chandrasekhar's avatar Lingutla Chandrasekhar
Browse files

power: reset: Support Minidump select option in dump type 



On system crash, some targets are able to collect Minidump,
so add option to collect fulldump as well as minidump or both dumps.
This is snapshot of minidump driver support in msm-4.4,
'commit f4beb492260b ("power: reset: msm: add support to select both
dumps")'

Change-Id: I090653097ba12abb4fc0a1ff44bf155cc0d7a3ed
Signed-off-by: default avatarLingutla Chandrasekhar <clingutla@codeaurora.org>
parent be48b076

drivers/power/reset/msm-poweroff.c

+59 −3
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <soc/qcom/scm.h>

#include <soc/qcom/restart.h>

#include <soc/qcom/watchdog.h>

#include <soc/qcom/minidump.h>



#define EMERGENCY_DLOAD_MAGIC1    0x322A4F99

#define EMERGENCY_DLOAD_MAGIC2    0xC67E4350
@@ -42,10 +43,11 @@ 
#define SCM_IO_DISABLE_PMIC_ARBITER	1

#define SCM_IO_DEASSERT_PS_HOLD		2

#define SCM_WDOG_DEBUG_BOOT_PART	0x9

#define SCM_DLOAD_MODE			0X10

#define SCM_DLOAD_FULLDUMP		0X10

#define SCM_EDLOAD_MODE			0X01

#define SCM_DLOAD_CMD			0x10



#define SCM_DLOAD_MINIDUMP		0X20

#define SCM_DLOAD_BOTHDUMPS	(SCM_DLOAD_MINIDUMP | SCM_DLOAD_FULLDUMP)



static int restart_mode;

static void __iomem *restart_reason, *dload_type_addr;
@@ -65,6 +67,7 @@ static struct kobject dload_kobj; 
#endif



static int in_panic;

static int dload_type = SCM_DLOAD_FULLDUMP;

static void *dload_mode_addr;

static bool dload_mode_enabled;

static void *emergency_dload_mode_addr;
@@ -137,7 +140,7 @@ static void set_dload_mode(int on) 
		mb();

	}



	ret = scm_set_dload_mode(on ? SCM_DLOAD_MODE : 0, 0);

	ret = scm_set_dload_mode(on ? dload_type : 0, 0);

	if (ret)

		pr_err("Failed to set secure DLOAD mode: %d\n", ret);
@@ -452,6 +455,9 @@ static ssize_t show_emmc_dload(struct kobject *kobj, struct attribute *attr, 
{

	uint32_t read_val, show_val;



	if (!dload_type_addr)

		return -ENODEV;



	read_val = __raw_readl(dload_type_addr);

	if (read_val == EMMC_DLOAD_TYPE)

		show_val = 1;
@@ -467,6 +473,9 @@ static size_t store_emmc_dload(struct kobject *kobj, struct attribute *attr, 
	uint32_t enabled;

	int ret;



	if (!dload_type_addr)

		return -ENODEV;



	ret = kstrtouint(buf, 0, &enabled);

	if (ret < 0)

		return ret;
@@ -481,10 +490,57 @@ static size_t store_emmc_dload(struct kobject *kobj, struct attribute *attr, 


	return count;

}



#ifdef CONFIG_QCOM_MINIDUMP

static DEFINE_MUTEX(tcsr_lock);



static ssize_t show_dload_mode(struct kobject *kobj, struct attribute *attr,

				char *buf)

{

	return scnprintf(buf, PAGE_SIZE, "DLOAD dump type: %s\n",

		(dload_type == SCM_DLOAD_BOTHDUMPS) ? "both" :

		((dload_type == SCM_DLOAD_MINIDUMP) ? "mini" : "full"));

}



static size_t store_dload_mode(struct kobject *kobj, struct attribute *attr,

				const char *buf, size_t count)

{

	if (sysfs_streq(buf, "full")) {

		dload_type = SCM_DLOAD_FULLDUMP;

	} else if (sysfs_streq(buf, "mini")) {

		if (!msm_minidump_enabled()) {

			pr_err("Minidump is not enabled\n");

			return -ENODEV;

		}

		dload_type = SCM_DLOAD_MINIDUMP;

	} else if (sysfs_streq(buf, "both")) {

		if (!msm_minidump_enabled()) {

			pr_err("Minidump not enabled, setting fulldump only\n");

			dload_type = SCM_DLOAD_FULLDUMP;

			return count;

		}

		dload_type = SCM_DLOAD_BOTHDUMPS;

	} else{

		pr_err("Invalid Dump setup request..\n");

		pr_err("Supported dumps:'full', 'mini', or 'both'\n");

		return -EINVAL;

	}



	mutex_lock(&tcsr_lock);

	/*Overwrite TCSR reg*/

	set_dload_mode(dload_type);

	mutex_unlock(&tcsr_lock);

	return count;

}

RESET_ATTR(dload_mode, 0644, show_dload_mode, store_dload_mode);

#endif

RESET_ATTR(emmc_dload, 0644, show_emmc_dload, store_emmc_dload);



static struct attribute *reset_attrs[] = {

	&reset_attr_emmc_dload.attr,

#ifdef CONFIG_QCOM_MINIDUMP

	&reset_attr_dload_mode.attr,

#endif

	NULL

};