arm64: zynqmp: Fix lockstep mode cpu release functionality

For lockstep mode, cpu_release function is expecting to execute on R5 core 0, if there is attempt to pass other than R5 core 0, through an error saying "Lockstep mode should run on R5 core 0 only". Signed-off-by: Venkatesh Yadav Abbarapu <[email protected]> State: pending
anand-grl · Jun 7, 2023 · 870d031 · 870d031
1 parent 0635928
commit 870d031
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/arch/arm/mach-zynqmp/mp.c b/arch/arm/mach-zynqmp/mp.c
@@ -326,6 +326,10 @@ int cpu_release(u32 nr, int argc, char *const argv[])
 		flush_dcache_all();
 
 		if (!strncmp(argv[1], "lockstep", 8)) {
+			if (nr != ZYNQMP_CORE_RPU0) {
+				printf("Lockstep mode should run on ZYNQMP_CORE_RPU0\n");
+				return 1;
+			}
 			printf("R5 lockstep mode\n");
 			set_r5_reset(nr, LOCK);
 			set_r5_tcm_mode(LOCK);