[ot] hw/opentitan: ot_otbn: fix FIPS compliance management

rivos-eblot · rivos-eblot · commit b9a909be86b7 · 2025-03-29T10:44:18.000+01:00
FIPS status should be reset after each entropy packet is delivered to the OTBN core.

Signed-off-by: Emmanuel Blot &lt;eblot@rivosinc.com&gt;
diff --git a/hw/opentitan/ot_otbn.c b/hw/opentitan/ot_otbn.c
@@ -328,6 +328,7 @@ static void ot_otbn_fill_entropy(void *opaque, uint32_t bits, bool fips)
         break;
     }
     ot_fifo32_reset(&rnd->packer);
+    rnd->no_fips = false;
     if (res) {
         trace_ot_otbn_error("cannot push entropy");
     }

Original file line number	Diff line number	Diff line change
`@@ -328,6 +328,7 @@ static void ot_otbn_fill_entropy(void *opaque, uint32_t bits, bool fips)`
`328`	`328`	`break;`
`329`	`329`	`}`
`330`	`330`	`ot_fifo32_reset(&rnd->packer);`
	`331`	`+ rnd->no_fips = false;`
`331`	`332`	`if (res) {`
`332`	`333`	`trace_ot_otbn_error("cannot push entropy");`
`333`	`334`	`}`