1 // SPDX-License-Identifier: GPL-2.0
3 * Xilinx Zynq MPSoC Firmware driver
5 * Copyright (C) 2018-2019 Xilinx, Inc.
11 #if defined(CONFIG_ZYNQMP_IPI)
13 #include <asm/arch/sys_proto.h>
15 #define PMUFW_PAYLOAD_ARG_CNT 8
18 struct mbox_chan tx_chan;
19 struct mbox_chan rx_chan;
22 static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
24 struct zynqmp_ipi_msg msg;
27 if (req_len > PMUFW_PAYLOAD_ARG_CNT ||
28 res_maxlen > PMUFW_PAYLOAD_ARG_CNT)
31 if (!(zynqmp_power.tx_chan.dev) || !(&zynqmp_power.rx_chan.dev))
36 ret = mbox_send(&zynqmp_power.tx_chan, &msg);
38 debug("%s: Sending message failed\n", __func__);
44 ret = mbox_recv(&zynqmp_power.rx_chan, &msg, 100);
46 debug("%s: Receiving message failed\n", __func__);
51 unsigned int zynqmp_firmware_version(void)
54 u32 ret_payload[PAYLOAD_ARG_CNT];
55 static u32 pm_api_version = ZYNQMP_PM_VERSION_INVALID;
58 * Get PMU version only once and later
59 * just return stored values instead of
62 if (pm_api_version == ZYNQMP_PM_VERSION_INVALID) {
63 if (IS_ENABLED(CONFIG_SPL_BUILD)) {
64 const u32 request[] = { PM_GET_API_VERSION };
66 ret = ipi_req(request, ARRAY_SIZE(request),
69 ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0,
74 panic("PMUFW is not found - Please load it!\n");
76 pm_api_version = ret_payload[1];
77 if (pm_api_version < ZYNQMP_PM_VERSION)
78 panic("PMUFW version error. Expected: v%d.%d\n",
79 ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
82 return pm_api_version;
85 static int zynqmp_power_probe(struct udevice *dev)
89 debug("%s, (dev=%p)\n", __func__, dev);
91 ret = mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan);
93 debug("%s, cannot tx mailbox\n", __func__);
97 ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan);
99 debug("%s, cannot rx mailbox\n", __func__);
103 ret = zynqmp_firmware_version();
104 printf("PMUFW:\tv%d.%d\n",
105 ret >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
106 ret & ZYNQMP_PM_VERSION_MINOR_MASK);
111 static const struct udevice_id zynqmp_power_ids[] = {
112 { .compatible = "xlnx,zynqmp-power" },
116 U_BOOT_DRIVER(zynqmp_power) = {
117 .name = "zynqmp_power",
118 .id = UCLASS_FIRMWARE,
119 .of_match = zynqmp_power_ids,
120 .probe = zynqmp_power_probe,
124 static const struct udevice_id zynqmp_firmware_ids[] = {
125 { .compatible = "xlnx,zynqmp-firmware" },
126 { .compatible = "xlnx,versal-firmware"},
130 U_BOOT_DRIVER(zynqmp_firmware) = {
131 .id = UCLASS_FIRMWARE,
132 .name = "zynqmp-firmware",
133 .probe = dm_scan_fdt_dev,
134 .of_match = zynqmp_firmware_ids,