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lib: sbi: Improve system reset platform operations

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To implement the SBI SRST extension, we need two platform operations
for system reset:
1) system_reset_check() - This operation will check whether given
   reset type and reason are supported by the platform
2) system_reset() - This operation will do the actual platform
   system reset and it will not return if reset type and reason
   are supported by the platform

This patch updates system reset related code everywhere as-per above.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-11-24 11:59:05 +05:30
committed by Anup Patel
parent da074796df
commit 5c429ae213
17 changed files with 137 additions and 36 deletions
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9
platform/thead/c910/platform.c
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@@ -108,10 +108,14 @@ static int c910_timer_init(bool cold_boot)
return clint_warm_timer_init();
}
static int c910_system_reset(u32 type)
static int c910_system_reset_check(u32 type, u32 reason)
{
return 1;
}
static void c910_system_reset(u32 type, u32 reason)
{
asm volatile ("ebreak");
return 0;
}
int c910_hart_start(u32 hartid, ulong saddr)
@@ -135,6 +139,7 @@ const struct sbi_platform_operations platform_ops = {
.timer_init = c910_timer_init,
.timer_event_start = clint_timer_event_start,
.system_reset_check = c910_system_reset_check,
.system_reset = c910_system_reset,
.hart_start = c910_hart_start,