riscv: hang if relocation of secondary harts fails

Print an error message and hang if smp_call_function() returns an error,
indicating that relocation of the secondary harts has failed.

Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>

diff --git a/arch/riscv/cpu/start.S b/arch/riscv/cpu/start.S
index 5ac899b141507c8f1ed3fdee8ec5a30a0e9317cd..a4433fbd6ba1b3689961c8bc64b4c2f0f0aa26c5 100644 (file)
--- a/arch/riscv/cpu/start.S
+++ b/arch/riscv/cpu/start.S
@@ -33,6 +33,10 @@
 #define SYM_SIZE               0x18
 #endif
 
+.section .data
+secondary_harts_relocation_error:
+       .ascii "Relocation of secondary harts has failed, error %d\n"
+
 .section .text
 .globl _start
 _start:
@@ -274,8 +278,15 @@ relocate_secondary_harts:
        mv      a2, s3
        jal     smp_call_function
 
+       /* hang if relocation of secondary harts has failed */
+       beqz    a0, 1f
+       mv      a1, a0
+       la      a0, secondary_harts_relocation_error
+       jal     printf
+       jal     hang
+
        /* restore relocation offset */
-       mv      t6, s5
+1:     mv      t6, s5
 #endif
 
 /*