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[arch][riscv] add new extensions for SBI 2.0

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No actual features enabled, just detection.
This commit is contained in:
Travis Geiselbrecht
2024-04-23 23:27:02 -07:00
parent 9a4fae0714
commit 284bf108bc
2 changed files with 21 additions and 1 deletions
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7
arch/riscv/include/arch/riscv/sbi.h
View File

@@ -59,7 +59,12 @@ enum sbi_return_code {
#define SBI_EXT_RFENCE_SIG 0x52464e43 // RFNC
#define SBI_EXT_HSM_SIG 0x0048534d // HSM
#define SBI_EXT_SRST_SIG 0x53525354 // SRST
#define SBI_EXT_PMU_SIG 0x00504d55 // PMU
#define SBI_EXT_PMU_SIG 0x00504d55 // PMU
#define SBI_EXT_DBCN_SIG 0x4442434e // DBCN
#define SBI_EXT_SUSP_SIG 0x53555350 // SUSP
#define SBI_EXT_CPPC_SIG 0x43505043 // CPPC
#define SBI_EXT_NACL_SIG 0x4e41434c // NACL
#define SBI_EXT_STA_SIG 0x00535441 // STA
void sbi_early_init(void);
void sbi_init(void);

15
arch/riscv/sbi.c
View File

@@ -26,6 +26,11 @@ enum sbi_extension {
SBI_EXTENSION_HSM,
SBI_EXTENSION_SRST,
SBI_EXTENSION_PMU,
SBI_EXTENSION_DBCN,
SBI_EXTENSION_SUSP,
SBI_EXTENSION_CPPC,
SBI_EXTENSION_NACL,
SBI_EXTENSION_STA,
};
static uint sbi_ext;
@@ -132,6 +137,11 @@ void sbi_early_init(void) {
sbi_ext |= sbi_probe_extension(SBI_EXT_HSM_SIG) ? (1<<SBI_EXTENSION_HSM) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_SRST_SIG) ? (1<<SBI_EXTENSION_SRST) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_PMU_SIG) ? (1<<SBI_EXTENSION_PMU) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_DBCN_SIG) ? (1<<SBI_EXTENSION_DBCN) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_SUSP_SIG) ? (1<<SBI_EXTENSION_SUSP) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_CPPC_SIG) ? (1<<SBI_EXTENSION_CPPC) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_NACL_SIG) ? (1<<SBI_EXTENSION_NACL) : 0;
sbi_ext |= sbi_probe_extension(SBI_EXT_STA_SIG) ? (1<<SBI_EXTENSION_STA) : 0;
}
void sbi_init(void) {
@@ -150,6 +160,11 @@ void sbi_init(void) {
if (sbi_ext_present(SBI_EXTENSION_HSM)) dprintf(INFO, "HSM ");
if (sbi_ext_present(SBI_EXTENSION_SRST)) dprintf(INFO, "SRST ");
if (sbi_ext_present(SBI_EXTENSION_PMU)) dprintf(INFO, "PMU ");
if (sbi_ext_present(SBI_EXTENSION_DBCN)) dprintf(INFO, "DBCN ");
if (sbi_ext_present(SBI_EXTENSION_SUSP)) dprintf(INFO, "SUSP ");
if (sbi_ext_present(SBI_EXTENSION_CPPC)) dprintf(INFO, "CPPC ");
if (sbi_ext_present(SBI_EXTENSION_NACL)) dprintf(INFO, "NACL ");
if (sbi_ext_present(SBI_EXTENSION_STA)) dprintf(INFO, "STA ");
dprintf(INFO, "\n");
}
}