From: Michal Simek <michal.simek@xilinx.com>
Date: Mon, 5 Oct 2020 13:23:28 +0000 (+0200)
Subject: firmware: zynqmp: Swap addr_hi/low when PM_FPGA_LOAD is called
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=5690128f70a1a4038629be0465d0aa53e7b05f27;p=u-boot.git

firmware: zynqmp: Swap addr_hi/low when PM_FPGA_LOAD is called

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@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index 7583f24a20..d4dc856baf 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;