diff options
| -rw-r--r-- | common/spl/spl_opensbi.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/common/spl/spl_opensbi.c b/common/spl/spl_opensbi.c index 58bf2468ce..6404373eca 100644 --- a/common/spl/spl_opensbi.c +++ b/common/spl/spl_opensbi.c @@ -76,9 +76,19 @@ void spl_invoke_opensbi(struct spl_image_info *spl_image) invalidate_icache_all(); #ifdef CONFIG_SMP + /* + * Start OpenSBI on all secondary harts and wait for acknowledgment. + * + * OpenSBI first relocates itself to its link address. This is done by + * the main hart. To make sure no hart is still running U-Boot SPL + * during relocation, we wait for all secondary harts to acknowledge + * the call-function request before entering OpenSBI on the main hart. + * Otherwise, code corruption can occur if the link address ranges of + * U-Boot SPL and OpenSBI overlap. + */ ret = smp_call_function((ulong)spl_image->entry_point, (ulong)spl_image->fdt_addr, - (ulong)&opensbi_info, 0); + (ulong)&opensbi_info, 1); if (ret) hang(); #endif |