Firmware/opensbi
8
0
Fork 0
forked from Mirrors/opensbi
Code Pull Requests Activity

lib: Emulate HTIMEDELTA CSR for platforms not having TIME CSR

Browse Source 
For platforms not having TIME CSR, we trap-n-emulate TIME CSR
read/write in OpenSBI. Same rationale applies to HTIMEDELTA CSR
as well so we trap-n-emulate HTIMEDELTA CSR for platforms not
having TIME CSR.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
This commit is contained in:
Anup Patel
2019-08-18 13:14:44 +05:30
committed by Anup Patel
parent 7d4420bd69
commit 1e9f88889f
6 changed files with 124 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
include/sbi/sbi_emulate_csr.h
View File

@@ -12,12 +12,13 @@
#include <sbi/sbi_types.h>
struct sbi_trap_regs;
struct sbi_scratch;
int sbi_emulate_csr_read(int csr_num, u32 hartid, ulong mstatus,
int sbi_emulate_csr_read(int csr_num, u32 hartid, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch, ulong *csr_val);
int sbi_emulate_csr_write(int csr_num, u32 hartid, ulong mstatus,
int sbi_emulate_csr_write(int csr_num, u32 hartid, struct sbi_trap_regs *regs,
struct sbi_scratch *scratch, ulong csr_val);
#endif