sandbox: implement reset
Up to now the sandbox would shutdown upon a cold reset request. Instead it
should be reset.
In our coding we use static variables like LIST_HEAD(efi_obj_list). A reset
can occur at any time, e.g. via an UEFI binary calling the reset service.
The only safe way to return to an initial state is to relaunch the U-Boot
binary.
The reset implementation uses execv() to relaunch U-Boot.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
index 34b6fff..59f37fa 100644
--- a/arch/sandbox/cpu/state.c
+++ b/arch/sandbox/cpu/state.c
@@ -358,6 +358,7 @@
/* No reset yet, so mark it as such. Always allow power reset */
state->last_sysreset = SYSRESET_COUNT;
state->sysreset_allowed[SYSRESET_POWER_OFF] = true;
+ state->sysreset_allowed[SYSRESET_COLD] = true;
state->allow_memio = false;
memset(&state->wdt, '\0', sizeof(state->wdt));