From 329dccc0675b97d8a1ab9debfb610165262f35c6 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Tue, 27 Oct 2020 20:29:25 +0100 Subject: 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 Reviewed-by: Simon Glass --- drivers/sysreset/sysreset_sandbox.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/sysreset') diff --git a/drivers/sysreset/sysreset_sandbox.c b/drivers/sysreset/sysreset_sandbox.c index 71cabd1956..7026a48c4b 100644 --- a/drivers/sysreset/sysreset_sandbox.c +++ b/drivers/sysreset/sysreset_sandbox.c @@ -56,6 +56,9 @@ static int sandbox_sysreset_request(struct udevice *dev, enum sysreset_t type) switch (type) { case SYSRESET_COLD: state->last_sysreset = type; + if (!state->sysreset_allowed[type]) + return -EACCES; + sandbox_reset(); break; case SYSRESET_POWER_OFF: state->last_sysreset = type; -- cgit v1.2.3