X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Ffirmware%2Ffirmware-zynqmp.c;h=903a8f5878203a5e7216929ab527a40dc471edbd;hb=7a1a01c6029039e4fa6aa185cdbbf9a357eecba7;hp=66edc1693016794642a2ca04414ac5a1d71df66d;hpb=526fe06a5d1d96ce22cca743576945016ec4e2ef;p=platform%2Fkernel%2Fu-boot.git

diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c
index 66edc16..903a8f5 100644
--- a/drivers/firmware/firmware-zynqmp.c
+++ b/drivers/firmware/firmware-zynqmp.c
@@ -37,6 +37,7 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
 	if (!(zynqmp_power.tx_chan.dev) || !(&zynqmp_power.rx_chan.dev))
 		return -EINVAL;
 
+	debug("%s, Sending IPI message with ID: 0x%0x\n", __func__, req[0]);
 	msg.buf = (u32 *)req;
 	msg.len = req_len;
 	ret = mbox_send(&zynqmp_power.tx_chan, &msg);
@@ -54,14 +55,6 @@ static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
 	return ret;
 }
 
-static int send_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
-{
-	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);
-}
-
 unsigned int zynqmp_firmware_version(void)
 {
 	int ret;
@@ -74,9 +67,9 @@ unsigned int zynqmp_firmware_version(void)
 	 * asking PMUFW again.
 	 **/
 	if (pm_api_version == ZYNQMP_PM_VERSION_INVALID) {
-		const u32 request[] = { PM_GET_API_VERSION };
 
-		ret = send_req(request, ARRAY_SIZE(request), ret_payload, 2);
+		ret = xilinx_pm_request(PM_GET_API_VERSION, 0, 0, 0, 0,
+					ret_payload);
 		if (ret)
 			panic("PMUFW is not found - Please load it!\n");
 
@@ -97,16 +90,13 @@ unsigned int zynqmp_firmware_version(void)
  */
 void zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size)
 {
-	const u32 request[] = {
-		PM_SET_CONFIGURATION,
-		(u32)((u64)cfg_obj)
-	};
-	u32 response = 0;
 	int err;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
 
 	printf("Loading new PMUFW cfg obj (%ld bytes)\n", size);
 
-	err = send_req(request, ARRAY_SIZE(request), &response, 1);
+	err = xilinx_pm_request(PM_SET_CONFIGURATION, (u32)(u64)cfg_obj, 0, 0,
+				0, ret_payload);
 	if (err == XST_PM_NO_ACCESS) {
 		printf("PMUFW no permission to change config object\n");
 		return;
@@ -115,10 +105,10 @@ void zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size)
 	if (err)
 		printf("Cannot load PMUFW configuration object (%d)\n", err);
 
-	if (response)
-		printf("PMUFW returned 0x%08x status!\n", response);
+	if (ret_payload[0])
+		printf("PMUFW returned 0x%08x status!\n", ret_payload[0]);
 
-	if ((err || response) && IS_ENABLED(CONFIG_SPL_BUILD))
+	if ((err || ret_payload[0]) && IS_ENABLED(CONFIG_SPL_BUILD))
 		panic("PMUFW config object loading failed in EL3\n");
 }
 
@@ -164,32 +154,44 @@ U_BOOT_DRIVER(zynqmp_power) = {
 int __maybe_unused xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2,
 				     u32 arg3, u32 *ret_payload)
 {
-	/*
-	 * Added SIP service call Function Identifier
-	 * Make sure to stay in x0 register
-	 */
-	struct pt_regs regs;
+	debug("%s at EL%d, API ID: 0x%0x\n", __func__, current_el(), api_id);
 
-	if (current_el() == 3) {
-		printf("%s: Can't call SMC from EL3 context\n", __func__);
+	if (IS_ENABLED(CONFIG_SPL_BUILD) || current_el() == 3) {
+#if defined(CONFIG_ZYNQMP_IPI)
+		/*
+		 * Use fixed payload and arg size as the EL2 call. The firmware
+		 * is capable to handle PMUFW_PAYLOAD_ARG_CNT bytes but the
+		 * firmware API is limited by the SMC call size
+		 */
+		u32 regs[] = {api_id, arg0, arg1, arg2, arg3};
+
+		ipi_req(regs, PAYLOAD_ARG_CNT, ret_payload, PAYLOAD_ARG_CNT);
+#else
 		return -EPERM;
-	}
-
-	regs.regs[0] = PM_SIP_SVC | api_id;
-	regs.regs[1] = ((u64)arg1 << 32) | arg0;
-	regs.regs[2] = ((u64)arg3 << 32) | arg2;
-
-	smc_call(&regs);
+#endif
+	} else {
+		/*
+		 * Added SIP service call Function Identifier
+		 * Make sure to stay in x0 register
+		 */
+		struct pt_regs regs;
+
+		regs.regs[0] = PM_SIP_SVC | api_id;
+		regs.regs[1] = ((u64)arg1 << 32) | arg0;
+		regs.regs[2] = ((u64)arg3 << 32) | arg2;
+
+		smc_call(&regs);
+
+		if (ret_payload) {
+			ret_payload[0] = (u32)regs.regs[0];
+			ret_payload[1] = upper_32_bits(regs.regs[0]);
+			ret_payload[2] = (u32)regs.regs[1];
+			ret_payload[3] = upper_32_bits(regs.regs[1]);
+			ret_payload[4] = (u32)regs.regs[2];
+		}
 
-	if (ret_payload) {
-		ret_payload[0] = (u32)regs.regs[0];
-		ret_payload[1] = upper_32_bits(regs.regs[0]);
-		ret_payload[2] = (u32)regs.regs[1];
-		ret_payload[3] = upper_32_bits(regs.regs[1]);
-		ret_payload[4] = (u32)regs.regs[2];
 	}
-
-	return regs.regs[0];
+	return (ret_payload) ? ret_payload[0] : 0;
 }
 
 static const struct udevice_id zynqmp_firmware_ids[] = {