Merge pull request #210 from riscv/reset_before_hart_enum

complete reset before writing to hartsel field
2018-02-07 18:35:06 -08:00 · 2018-02-07 18:35:06 -08:00 · 2e415b3930
parent 6e278cded6 5c543ee3a1
commit 2e415b3930
1 changed files with 3 additions and 1 deletions
--- a/src/target/riscv/riscv-013.c
+++ b/src/target/riscv/riscv-013.c
@ -1164,8 +1164,10 @@ static int examine(struct target *target)
 	}

 	/* Reset the Debug Module. */
+	dmi_write(target, DMI_DMCONTROL, 0);
+	dmi_write(target, DMI_DMCONTROL, DMI_DMCONTROL_DMACTIVE);
+
 	uint32_t max_hartsel_mask = ((1L<<10)-1) << DMI_DMCONTROL_HARTSEL_OFFSET;
-	dmi_write(target, DMI_DMCONTROL, max_hartsel_mask);
 	dmi_write(target, DMI_DMCONTROL, max_hartsel_mask | DMI_DMCONTROL_DMACTIVE);
 	uint32_t dmcontrol = dmi_read(target, DMI_DMCONTROL);