[PATCH V2 3/6] riscv: Implement test for architecture ID register

[cem@kernel.org <cem@kernel.org>]

From: Carlos Maiolino <cem@kernel.org>

Probe the MARCHID register and compare it to the specified MARCHID
environment variable.

Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
---
V2:
	- Wrap commit message around 70 chars
	- Remove unneeded blank lines

 riscv/sbi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/riscv/sbi.c b/riscv/sbi.c
index 519fcbe3..76f6111d 100644
--- a/riscv/sbi.c
+++ b/riscv/sbi.c
@@ -52,6 +52,15 @@ static void check_base(void)
 	gen_report(&ret, expected);
 	report_prefix_pop();
 
+	report_prefix_push("marchid");
+	if (env_or_skip("MARCHID")) {
+		expected = strtol(getenv("MARCHID"), NULL, 0);
+		ret = sbi_ecall(SBI_EXT_BASE, SBI_EXT_BASE_PROBE_EXT,
+				SBI_EXT_BASE_GET_MARCHID, 0, 0, 0, 0, 0);
+		gen_report(&ret, expected);
+	}
+	report_prefix_pop();
+
 	report_prefix_pop();
 }
 
-- 
2.44.0