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lib: sbi: Add initial domain context management support

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The domain context management component in OpenSBI provides basic CPU
context management routines for existing OpenSBI domain. As domain
extension, it was initially designed to facilitate the suspension
and resumption of domains, enabling secure domains to efficiently
share CPU resources.

The patch also provides an addition to the OpenSBI domain to provide
updates on hart-domain assignment and declarations of contexts within
the domain.

Signed-off-by: Qingyu Shang <2931013282@sjtu.edu.cn>
Reviewed-by: Yu Chien Peter Lin <peterlin@andestech.com>
Tested-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Qingyu Shang
2024-03-06 19:15:58 +08:00
committed by Anup Patel
parent 87d8fe7865
commit e11025c52d
6 changed files with 242 additions and 2 deletions
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6
include/sbi/sbi_domain.h
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@@ -12,6 +12,7 @@
#include <sbi/sbi_types.h>
#include <sbi/sbi_hartmask.h>
#include <sbi/sbi_domain_context.h>
struct sbi_scratch;
@@ -176,6 +177,8 @@ struct sbi_domain {
char name[64];
/** Possible HARTs in this domain */
const struct sbi_hartmask *possible_harts;
/** Contexts for possible HARTs indexed by hartindex */
struct sbi_context *hartindex_to_context_table[SBI_HARTMASK_MAX_BITS];
/** Array of memory regions terminated by a region with order zero */
struct sbi_domain_memregion *regions;
/** HART id of the HART booting this domain */
@@ -200,6 +203,9 @@ extern struct sbi_domain root;
/** Get pointer to sbi_domain from HART index */
struct sbi_domain *sbi_hartindex_to_domain(u32 hartindex);
/** Update HART local pointer to point to specified domain */
void sbi_update_hartindex_to_domain(u32 hartindex, struct sbi_domain *dom);
/** Get pointer to sbi_domain for current HART */
#define sbi_domain_thishart_ptr() \
sbi_hartindex_to_domain(sbi_hartid_to_hartindex(current_hartid()))