[PATCH 2/2] cmd/sbi: add missing SBI information

[Heinrich Schuchardt <xypron.glpk@gmx.de>]

Let the sbi command display:

* SBI implementation version
* machine vendor ID
* machine architecture ID
* machine implementation ID

With this patch the output for the HiFive Unmatched looks like

    => sbi
    SBI 0.3
    OpenSBI 0.9
    Machine:
      Vendor ID 489
      Architecture ID 8000000000000007
      Implementation ID 20181004
    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
      System Reset Extension

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
---
 cmd/riscv/sbi.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/cmd/riscv/sbi.c b/cmd/riscv/sbi.c
index 90c0811e14..c0db763ba7 100644
--- a/cmd/riscv/sbi.c
+++ b/cmd/riscv/sbi.c
@@ -59,13 +59,30 @@ static int do_sbi(struct cmd_tbl *cmdtp, int flag, int argc,
 	if (ret >= 0) {
 		for (i = 0; i < ARRAY_SIZE(implementations); ++i) {
 			if (ret == implementations[i].id) {
-				printf("%s\n", implementations[i].name);
+				printf("%s", implementations[i].name);
+				ret = sbi_get_impl_version();
+				if (ret > 0) {
+					/* OpenSBI specific version encoding */
+					printf(" %ld", ret >> 16);
+					printf(".%ld", ret & 0xffff);
+				}
+				printf("\n");
 				break;
 			}
 		}
 		if (i == ARRAY_SIZE(implementations))
 			printf("Unknown implementation ID %ld\n", ret);
 	}
+	printf("Machine:\n");
+	ret = sbi_get_mvendorid();
+	if (ret != -ENOTSUPP)
+		printf("  Vendor ID %lx\n", ret);
+	ret = sbi_get_marchid();
+	if (ret != -ENOTSUPP)
+		printf("  Architecture ID %lx\n", ret);
+	ret = sbi_get_mimpid();
+	if (ret != -ENOTSUPP)
+		printf("  Implementation ID %lx\n", ret);
 	printf("Extensions:\n");
 	for (i = 0; i < ARRAY_SIZE(extensions); ++i) {
 		ret = sbi_probe_extension(extensions[i].id);
--
2.30.2