cmd: sbi: add Performance Monitoring Unit Extension

Version 1.0-rc3 of the RISC-V Supervisor Binary Interface Specification
has added the Performance Monitoring Unit Extension.

The sbi command should be able to detect it.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/arch/riscv/include/asm/sbi.h b/arch/riscv/include/asm/sbi.h
index bfcd204..7645312 100644 (file)
--- a/arch/riscv/include/asm/sbi.h
+++ b/arch/riscv/include/asm/sbi.h
@@ -27,6 +27,7 @@ enum sbi_ext_id {
        SBI_EXT_RFENCE = 0x52464E43,
        SBI_EXT_HSM = 0x48534D,
        SBI_EXT_SRST = 0x53525354,
+       SBI_EXT_PMU = 0x504D55,
 };
 
 enum sbi_ext_base_fid {

diff --git a/cmd/riscv/sbi.c b/cmd/riscv/sbi.c
index c4a9c84..8349123 100644 (file)
--- a/cmd/riscv/sbi.c
+++ b/cmd/riscv/sbi.c
@@ -44,6 +44,7 @@ static struct sbi_ext extensions[] = {
        { SBI_EXT_RFENCE,                     "RFENCE Extension" },
        { SBI_EXT_HSM,                        "Hart State Management Extension" },
        { SBI_EXT_SRST,                       "System Reset Extension" },
+       { SBI_EXT_PMU,                        "Performance Monitoring Unit Extension" },
 };
 
 static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,