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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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13
lib/sbi/sbi_system.c
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@@ -18,7 +18,16 @@
#include <sbi/sbi_ipi.h>
#include <sbi/sbi_init.h>
void __noreturn sbi_system_reset(u32 reset_type)
bool sbi_system_reset_supported(u32 reset_type, u32 reset_reason)
{
if (sbi_platform_system_reset_check(sbi_platform_thishart_ptr(),
reset_type, reset_reason))
return TRUE;
return FALSE;
}
void __noreturn sbi_system_reset(u32 reset_type, u32 reset_reason)
{
ulong hbase = 0, hmask;
u32 cur_hartid = current_hartid();
@@ -40,7 +49,7 @@ void __noreturn sbi_system_reset(u32 reset_type)
/* Platform specific reset if domain allowed system reset */
if (dom->system_reset_allowed)
sbi_platform_system_reset(sbi_platform_ptr(scratch),
reset_type);
reset_type, reset_reason);
/* If platform specific reset did not work then do sbi_exit() */
sbi_exit(scratch);