From 6e44ef686a9b329d837c61d7f121541abfcfed90 Mon Sep 17 00:00:00 2001 From: Himanshu Chauhan Date: Wed, 12 Jul 2023 10:04:35 +0530 Subject: lib: sbi: Add functions to map/unmap shared memory When Smepmp is enabled, M-mode will need to map/unmap the shared memory before it can read/write to it. This patch adds functions to create dynamic short-lived mappings. Signed-off-by: Himanshu Chauhan Reviewed-by: Anup Patel --- include/sbi/sbi_hart.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/sbi/sbi_hart.h b/include/sbi/sbi_hart.h index 1b783436..c150b7e4 100644 --- a/include/sbi/sbi_hart.h +++ b/include/sbi/sbi_hart.h @@ -90,6 +90,8 @@ unsigned long sbi_hart_pmp_granularity(struct sbi_scratch *scratch); unsigned int sbi_hart_pmp_addrbits(struct sbi_scratch *scratch); unsigned int sbi_hart_mhpm_bits(struct sbi_scratch *scratch); int sbi_hart_pmp_configure(struct sbi_scratch *scratch); +int sbi_hart_map_saddr(unsigned long base, unsigned long size); +int sbi_hart_unmap_saddr(void); int sbi_hart_priv_version(struct sbi_scratch *scratch); void sbi_hart_get_priv_version_str(struct sbi_scratch *scratch, char *version_str, int nvstr); -- cgit v1.3.1