cmd: provide command sbi
Provide a command to display information about the SBI implementation.
The output might look like:
=> sbi
SBI 0.2
OpenSBI
Extensions:
sbi_set_timer
sbi_console_putchar
sbi_console_getchar
sbi_clear_ipi
sbi_send_ipi
sbi_remote_fence_i
sbi_remote_sfence_vma
sbi_remote_sfence_vma_asid
sbi_shutdown
SBI Base Functionality
Timer Extension
IPI Extension
RFENCE Extension
Hart State Management Extension
The command can be used to construct a unit test checking that the
communication with the SEE is working.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@openfive.com>
Tested-by: Pragnesh Patel <pragnesh.patel@openfive.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Tested-by: Rick Chen <rick@andestech.com>
diff --git a/arch/riscv/lib/sbi.c b/arch/riscv/lib/sbi.c
index 8fbc238..77845a7 100644
--- a/arch/riscv/lib/sbi.c
+++ b/arch/riscv/lib/sbi.c
@@ -54,6 +54,42 @@
}
/**
+ * sbi_get_spec_version() - get current SBI specification version
+ *
+ * Return: version id
+ */
+long sbi_get_spec_version(void)
+{
+ struct sbiret ret;
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_SPEC_VERSION,
+ 0, 0, 0, 0, 0, 0);
+ if (!ret.error)
+ if (ret.value)
+ return ret.value;
+
+ return -ENOTSUPP;
+}
+
+/**
+ * sbi_get_impl_id() - get SBI implementation ID
+ *
+ * Return: implementation ID
+ */
+int sbi_get_impl_id(void)
+{
+ struct sbiret ret;
+
+ ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_GET_IMP_ID,
+ 0, 0, 0, 0, 0, 0);
+ if (!ret.error)
+ if (ret.value)
+ return ret.value;
+
+ return -ENOTSUPP;
+}
+
+/**
* sbi_probe_extension() - Check if an SBI extension ID is supported or not.
* @extid: The extension ID to be probed.
*