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

lib: sbi: Convert hart features into hart extensions

Browse Source 
Since past few years, we have been using "hart features" in OpenSBI
to represent all optionalities and multi-letter extensions defined
by the RISC-V specifications.

The RISC-V profiles specification has taken a different approach and
started assigning extension names for all optionalities which did not
have any extension name previously.
(Refer, https://github.com/riscv/riscv-profiles/blob/main/profiles.adoc)

Inspired from the RISC-V profiles specification, we convert OpenSBI
hart features into hart extensions. Going forward, we align the
extension naming with RISC-V profiles specification. Currently, only
"time CSR" and "AIA CSR" have not been assigned extension name but
for everything else we have a name.

Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
This commit is contained in:
Anup Patel
2022-04-28 21:29:22 +05:30
committed by Anup Patel
parent a6ab94fdbf
commit cad6c91045
7 changed files with 86 additions and 93 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
lib/sbi/sbi_timer.c
View File

@@ -129,7 +129,7 @@ void sbi_timer_event_start(u64 next_event)
* Update the stimecmp directly if available. This allows
* the older software to leverage sstc extension on newer hardware.
*/
if (sbi_hart_has_feature(sbi_scratch_thishart_ptr(), SBI_HART_HAS_SSTC)) {
if (sbi_hart_has_extension(sbi_scratch_thishart_ptr(), SBI_HART_EXT_SSTC)) {
#if __riscv_xlen == 32
csr_write(CSR_STIMECMP, next_event & 0xFFFFFFFF);
csr_write(CSR_STIMECMPH, next_event >> 32);
@@ -151,7 +151,7 @@ void sbi_timer_process(void)
* directly without M-mode come in between. This function should
* only invoked if M-mode programs the timer for its own purpose.
*/
if (!sbi_hart_has_feature(sbi_scratch_thishart_ptr(), SBI_HART_HAS_SSTC))
if (!sbi_hart_has_extension(sbi_scratch_thishart_ptr(), SBI_HART_EXT_SSTC))
csr_set(CSR_MIP, MIP_STIP);
}
@@ -180,7 +180,7 @@ int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot)
if (!time_delta_off)
return SBI_ENOMEM;
if (sbi_hart_has_feature(scratch, SBI_HART_HAS_TIME))
if (sbi_hart_has_extension(scratch, SBI_HART_EXT_TIME))
get_time_val = get_ticks;
} else {
if (!time_delta_off)