U-Boot proper can still run in EL3 without using firmware interface wired via ATF. For supporting this use case there is a need to check EL level where U-Boot runs and based on that choose the way how to talk to firmware.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
drivers/firmware/firmware-zynqmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 2a2aa2f4f169..c37642569dda 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -51,7 +51,7 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
static int send_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen) { - if (IS_ENABLED(CONFIG_SPL_BUILD)) + if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3) return ipi_req(req, req_len, res, res_maxlen);
return xilinx_pm_request(req[0], 0, 0, 0, 0, res);