[PATCH 1/4] firmware: zynqmp: Swap addr_hi/low when PM_FPGA_LOAD is called

[Michal Simek]

Don't know reason but in regular flow addr_hi/low are swapped in ATF. It
means when fpga load is done from EL3 there is a need to swap it for PMUFW
to load bitstream.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 drivers/firmware/firmware-zynqmp.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index 7583f24a200d..d4dc856bafa4 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -165,6 +165,14 @@ int __maybe_unused xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2,
 		 */
 		u32 regs[] = {api_id, arg0, arg1, arg2, arg3};
 
+		if (api_id == PM_FPGA_LOAD) {
+			/* Swap addr_hi/low because of incompatibility */
+			u32 temp = regs[1];
+
+			regs[1] = regs[2];
+			regs[2] = temp;
+		}
+
 		ipi_req(regs, PAYLOAD_ARG_CNT, ret_payload, PAYLOAD_ARG_CNT);
 #else
 		return -EPERM;
-- 
2.28.0