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lib: sbi: convert reset to list

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To support different handlers for different types of resets, we are
adding a sbi_list of restart handlers.

Instead of sbi_system_reset_set_device we use
sbi_system_reset_add_device to reflect the actual meaning.

Signed-off-by: Nikita Shubin <n.shubin@yadro.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Nikita Shubin
2021-10-01 11:31:16 +03:00
committed by Anup Patel
parent 754d51192b
commit 516161c46f
10 changed files with 50 additions and 25 deletions
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39
lib/sbi/sbi_system.c
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@@ -18,28 +18,36 @@
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_init.h>
static const struct sbi_system_reset_device *reset_dev = NULL;
static SBI_LIST_HEAD(reset_devices_list);
const struct sbi_system_reset_device *sbi_system_reset_get_device(void)
const struct sbi_system_reset_device *sbi_system_reset_get_device(
u32 reset_type, u32 reset_reason)
{
return reset_dev;
struct sbi_system_reset_device *dev = 0;
struct sbi_dlist *pos;
/* Check each reset device registered for supported reset type */
sbi_list_for_each(pos, &(reset_devices_list)) {
dev = to_system_reset_device(pos);
if (dev->system_reset_check &&
dev->system_reset_check(reset_type, reset_reason))
break;
}
return dev;
}
void sbi_system_reset_set_device(const struct sbi_system_reset_device *dev)
void sbi_system_reset_add_device(struct sbi_system_reset_device *dev)
{
if (!dev || reset_dev)
if (!dev || !dev->system_reset_check)
return;
reset_dev = dev;
sbi_list_add(&(dev->node), &(reset_devices_list));
}
bool sbi_system_reset_supported(u32 reset_type, u32 reset_reason)
{
if (reset_dev && reset_dev->system_reset_check &&
reset_dev->system_reset_check(reset_type, reset_reason))
return TRUE;
return FALSE;
return !!sbi_system_reset_get_device(reset_type, reset_reason);
}
void __noreturn sbi_system_reset(u32 reset_type, u32 reset_reason)
@@ -62,9 +70,12 @@ void __noreturn sbi_system_reset(u32 reset_type, u32 reset_reason)
sbi_hsm_hart_stop(scratch, FALSE);
/* Platform specific reset if domain allowed system reset */
if (dom->system_reset_allowed &&
reset_dev && reset_dev->system_reset)
reset_dev->system_reset(reset_type, reset_reason);
if (dom->system_reset_allowed) {
const struct sbi_system_reset_device *dev =
sbi_system_reset_get_device(reset_type, reset_reason);
if (dev)
dev->system_reset(reset_type, reset_reason);
}
/* If platform specific reset did not work then do sbi_exit() */
sbi_exit(scratch);