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include: sbi: Add domains_init() platform operation

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We introduce domains_init() platform operation which can be used by
platform support to initialize/populate domains in the coldboot path.

The domains_init() is called late in the coldboot sequence from the
sbi_domain_finalize() so sbi_printf() can be used by platform support
to print errors/warnings at time of populating domains.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
This commit is contained in:
Anup Patel 2020-11-20 16:42:15 +05:30 • committed by Anup Patel
parent 555e73778a
commit 9b65dcaedd
2 changed files with 24 additions and 0 deletions
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16
include/sbi/sbi_platform.h
View file

@ -91,6 +91,8 @@ struct sbi_platform_operations {
*/
int (*misa_get_xlen)(void);
/** Initialize (or populate) domains for the platform */
int (*domains_init)(void);
/** Get domain pointer for given HART id */
struct sbi_domain *(*domain_get)(u32 hartid);
@ -451,6 +453,20 @@ static inline int sbi_platform_misa_xlen(const struct sbi_platform *plat)
return -1;
}
/**
* Initialize (or populate) domains for the platform
*
* @param plat pointer to struct sbi_platform
*
* @return 0 on success and negative error code on failure
*/
static inline int sbi_platform_domains_init(const struct sbi_platform *plat)
{
if (plat && sbi_platform_ops(plat)->domains_init)
return sbi_platform_ops(plat)->domains_init();
return 0;
}
/**
* Get domain pointer for given HART
*

8
lib/sbi/sbi_domain.c
View file

@ -375,6 +375,14 @@ int sbi_domain_finalize(struct sbi_scratch *scratch, u32 cold_hartid)
struct sbi_domain *dom, *tdom;
const struct sbi_platform *plat = sbi_platform_ptr(scratch);
/* Initialize domains for the platform */
rc = sbi_platform_domains_init(plat);
if (rc) {
sbi_printf("%s: platform domains_init() failed (error %d)\n",
__func__, rc);
return rc;
}
/* Discover domains */
for (i = 0; i < SBI_HARTMASK_MAX_BITS; i++) {
/* Ignore invalid HART */