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lib: sbi_platform: expose hart_features to extension_init callback 

The platform-specific extension_init callback is supposed to
set specific things for the platform opensbi is running on.

So it's also the right place to override specific hart_features
if needed - when it's know that autodetection has provided
wrong results for example.

Suggested-by: Atish Patra <atishp@atishpatra.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Heiko Stuebner 2022-10-04 18:42:25 +02:00 committed by Anup Patel
parent c316fa38c2
commit 4f2acb53e2
2 changed files with 7 additions and 4 deletions
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8
include/sbi/sbi_platform.h
View File

@ -48,6 +48,7 @@
struct sbi_domain_memregion;
struct sbi_trap_info;
struct sbi_trap_regs;
struct sbi_hart_features;
/** Possible feature flags of a platform */
enum sbi_platform_features {
@ -90,7 +91,7 @@ struct sbi_platform_operations {
int (*misa_get_xlen)(void);
/** Initialize (or populate) HART extensions for the platform */
int (*extensions_init)(void);
int (*extensions_init)(struct sbi_hart_features *hfeatures);
/** Initialize (or populate) domains for the platform */
int (*domains_init)(void);
@ -464,10 +465,11 @@ static inline int sbi_platform_misa_xlen(const struct sbi_platform *plat)
* @return 0 on success and negative error code on failure
*/
static inline int sbi_platform_extensions_init(
const struct sbi_platform *plat)
const struct sbi_platform *plat,
struct sbi_hart_features *hfeatures)
{
if (plat && sbi_platform_ops(plat)->extensions_init)
return sbi_platform_ops(plat)->extensions_init();
return sbi_platform_ops(plat)->extensions_init(hfeatures);
return 0;
}

3
lib/sbi/sbi_hart.c
View File

@ -672,7 +672,8 @@ __mhpm_skip:
}
/* Let platform populate extensions */
rc = sbi_platform_extensions_init(sbi_platform_thishart_ptr());
rc = sbi_platform_extensions_init(sbi_platform_thishart_ptr(),
hfeatures);
if (rc)
return rc;