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firmware: qcom_scm: Add calls for watchdog tests

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Add call to trigger secure watchdog and spin CPU.

Change-Id: I792c366528f46c87c68e73a49e276b1cd9462eaf
Signed-off-by: Elliot Berman <eberman@codeaurora.org>
This commit is contained in:
Elliot Berman 2019-11-19 15:35:53 -08:00
commit 871f20c5e1
4 changed files with 47 additions and 0 deletions
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28
drivers/firmware/qcom_scm-smc.c
View file

@ -696,6 +696,20 @@ int __qcom_scm_sec_wdog_deactivate(struct device *dev)
return qcom_scm_call(dev, &desc);
}
int __qcom_scm_sec_wdog_trigger(struct device *dev)
{
struct qcom_scm_desc desc = {
.svc = QCOM_SCM_SVC_BOOT,
.cmd = QCOM_SCM_BOOT_SEC_WDOG_TRIGGER,
.owner = ARM_SMCCC_OWNER_SIP,
};
int ret;
ret = qcom_scm_call(dev, &desc);
return ret ? : desc.res[0];
}
int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
{
struct qcom_scm_desc desc = {
@ -714,6 +728,20 @@ int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
return ret ? : desc.res[0];
}
int __qcom_scm_spin_cpu(struct device *dev)
{
struct qcom_scm_desc desc = {
.svc = QCOM_SCM_SVC_BOOT,
.cmd = QCOM_SCM_BOOT_SPIN_CPU,
.owner = ARM_SMCCC_OWNER_SIP
};
desc.args[0] = 0;
desc.arginfo = QCOM_SCM_ARGS(1);
return qcom_scm_call(dev, &desc);
}
int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
{
struct qcom_scm_desc desc = {

12
drivers/firmware/qcom_scm.c
View file

@ -124,12 +124,24 @@ int qcom_scm_sec_wdog_deactivate(void)
}
EXPORT_SYMBOL(qcom_scm_sec_wdog_deactivate);
int qcom_scm_sec_wdog_trigger(void)
{
return __qcom_scm_sec_wdog_trigger(__scm->dev);
}
EXPORT_SYMBOL(qcom_scm_sec_wdog_trigger);
int qcom_scm_set_remote_state(u32 state, u32 id)
{
return __qcom_scm_set_remote_state(__scm->dev, state, id);
}
EXPORT_SYMBOL(qcom_scm_set_remote_state);
int qcom_scm_spin_cpu(void)
{
return __qcom_scm_spin_cpu(__scm->dev);
}
EXPORT_SYMBOL(qcom_scm_spin_cpu);
static void qcom_scm_set_download_mode(bool enable)
{
bool avail;

3
drivers/firmware/qcom_scm.h
View file

@ -11,6 +11,7 @@
#define QCOM_SCM_BOOT_SEC_WDOG_DIS 0x07
#define QCOM_SCM_BOOT_SEC_WDOG_TRIGGER 0x08
#define QCOM_SCM_BOOT_SET_REMOTE_STATE 0x0a
#define QCOM_SCM_BOOT_SPIN_CPU 0x0d
#define QCOM_SCM_BOOT_SWITCH_MODE 0x0f
#define QCOM_SCM_BOOT_SET_DLOAD_MODE 0x10
#define QCOM_SCM_BOOT_CONFIG_CPU_ERRATA 0x12
@ -20,7 +21,9 @@ extern int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
const cpumask_t *cpus);
extern void __qcom_scm_cpu_power_down(struct device *dev, u32 flags);
extern int __qcom_scm_sec_wdog_deactivate(struct device *dev);
extern int __qcom_scm_sec_wdog_trigger(struct device *dev);
extern int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id);
extern int __qcom_scm_spin_cpu(struct device *dev);
extern int __qcom_scm_set_dload_mode(struct device *dev, bool enable);
extern int __qcom_scm_config_cpu_errata(struct device *dev);
#define QCOM_SCM_FLUSH_FLAG_MASK 0x3

4
include/linux/qcom_scm.h
View file

@ -76,7 +76,9 @@ extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
extern void qcom_scm_cpu_power_down(u32 flags);
extern int qcom_scm_sec_wdog_deactivate(void);
extern int qcom_scm_sec_wdog_trigger(void);
extern int qcom_scm_set_remote_state(u32 state, u32 id);
extern int qcom_scm_spin_cpu(void);
extern int qcom_scm_config_cpu_errata(void);
extern bool qcom_scm_pas_supported(u32 peripheral);
extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
@ -188,8 +190,10 @@ int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
{ return -ENODEV; }
static inline void qcom_scm_cpu_power_down(u32 flags) {}
static inline int qcom_scm_sec_wdog_deactivate(void) { return -ENODEV; }
static inline int qcom_scm_sec_wdog_trigger(void) { return -ENODEV; }
static inline u32 qcom_scm_set_remote_state(u32 state, u32 id)
{ return -ENODEV; }
static inline int qcom_scm_spin_cpu(void) { return -ENODEV; }
static inline int qcom_scm_config_cpu_errata(void)
{ return -ENODEV; }
static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }