Mirrors/opensbi
1
0
Fork 1
mirror of https://github.com/riscv-software-src/opensbi.git synced 2025-08-24 23:41:23 +01:00
Code Issues Packages Projects Releases Wiki Activity

lib: Add system early_exit and final_exit APIs

Browse Source 
This patch adds system-level early_exit and final_exit APIs
with corresponding platform hooks. These new APIs will be
primarily used by sbi_exit() in OpenSBI exit path.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel
2020-01-03 09:10:41 +05:30
parent c3e406f160
commit 55e191e3b0
4 changed files with 45 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
include/sbi/sbi_platform.h
View File

@@ -76,6 +76,11 @@ struct sbi_platform_operations {
/** Platform final initialization */ /** Platform final initialization */
int (*final_init)(bool cold_boot); int (*final_init)(bool cold_boot);
/** Platform early exit */
void (*early_exit)(void);
/** Platform final exit */
void (*final_exit)(void);
/** For platforms that do not implement misa, non-standard /** For platforms that do not implement misa, non-standard
* methods are needed to determine cpu extension. * methods are needed to determine cpu extension.
*/ */
@@ -301,6 +306,28 @@ static inline int sbi_platform_final_init(const struct sbi_platform *plat,
return 0; return 0;
} }
/**
* Early exit for current HART
*
* @param plat pointer to struct sbi_platform
*/
static inline void sbi_platform_early_exit(const struct sbi_platform *plat)
{
if (plat && sbi_platform_ops(plat)->early_exit)
sbi_platform_ops(plat)->early_exit();
}
/**
* Final exit for current HART
*
* @param plat pointer to struct sbi_platform
*/
static inline void sbi_platform_final_exit(const struct sbi_platform *plat)
{
if (plat && sbi_platform_ops(plat)->final_exit)
sbi_platform_ops(plat)->final_exit();
}
/** /**
* Check CPU extension in MISA * Check CPU extension in MISA
* *

4
include/sbi/sbi_system.h
View File

@@ -18,6 +18,10 @@ int sbi_system_early_init(struct sbi_scratch *scratch, bool cold_boot);
int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot); int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot);
void sbi_system_early_exit(struct sbi_scratch *scratch);
void sbi_system_final_exit(struct sbi_scratch *scratch);
void __attribute__((noreturn)) void __attribute__((noreturn))
sbi_system_reboot(struct sbi_scratch *scratch, u32 type); sbi_system_reboot(struct sbi_scratch *scratch, u32 type);

4
lib/sbi/sbi_init.c
View File

@@ -203,5 +203,9 @@ void __noreturn sbi_exit(struct sbi_scratch *scratch)
sbi_hart_unmark_available(hartid); sbi_hart_unmark_available(hartid);
sbi_platform_early_exit(plat);
sbi_platform_final_exit(plat);
sbi_hart_hang(); sbi_hart_hang();
} }

10
lib/sbi/sbi_system.c
View File

@@ -23,6 +23,16 @@ int sbi_system_final_init(struct sbi_scratch *scratch, bool cold_boot)
return sbi_platform_final_init(sbi_platform_ptr(scratch), cold_boot); return sbi_platform_final_init(sbi_platform_ptr(scratch), cold_boot);
} }
void sbi_system_early_exit(struct sbi_scratch *scratch)
{
sbi_platform_early_exit(sbi_platform_ptr(scratch));
}
void sbi_system_final_exit(struct sbi_scratch *scratch)
{
sbi_platform_final_exit(sbi_platform_ptr(scratch));
}
void __attribute__((noreturn)) void __attribute__((noreturn))
sbi_system_reboot(struct sbi_scratch *scratch, u32 type) sbi_system_reboot(struct sbi_scratch *scratch, u32 type)