137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Xilinx Zynq MPSoC Firmware driver
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*
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* Copyright (C) 2018-2019 Xilinx, Inc.
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*/
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#include <common.h>
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#include <dm.h>
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#if defined(CONFIG_ZYNQMP_IPI)
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#include <mailbox.h>
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#include <zynqmp_firmware.h>
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#include <asm/arch/sys_proto.h>
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#define PMUFW_PAYLOAD_ARG_CNT 8
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struct zynqmp_power {
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struct mbox_chan tx_chan;
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struct mbox_chan rx_chan;
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} zynqmp_power;
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static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
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{
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struct zynqmp_ipi_msg msg;
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int ret;
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if (req_len > PMUFW_PAYLOAD_ARG_CNT ||
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res_maxlen > PMUFW_PAYLOAD_ARG_CNT)
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return -EINVAL;
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if (!(zynqmp_power.tx_chan.dev) || !(&zynqmp_power.rx_chan.dev))
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return -EINVAL;
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msg.buf = (u32 *)req;
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msg.len = req_len;
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ret = mbox_send(&zynqmp_power.tx_chan, &msg);
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if (ret) {
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debug("%s: Sending message failed\n", __func__);
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return ret;
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}
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msg.buf = res;
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msg.len = res_maxlen;
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ret = mbox_recv(&zynqmp_power.rx_chan, &msg, 100);
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if (ret)
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debug("%s: Receiving message failed\n", __func__);
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return ret;
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}
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unsigned int zynqmp_firmware_version(void)
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{
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int ret;
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u32 ret_payload[PAYLOAD_ARG_CNT];
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static u32 pm_api_version = ZYNQMP_PM_VERSION_INVALID;
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/*
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* Get PMU version only once and later
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* just return stored values instead of
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* asking PMUFW again.
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**/
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if (pm_api_version == ZYNQMP_PM_VERSION_INVALID) {
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if (IS_ENABLED(CONFIG_SPL_BUILD)) {
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const u32 request[] = { PM_GET_API_VERSION };
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ret = ipi_req(request, ARRAY_SIZE(request),
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ret_payload, 2);
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} else {
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ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0,
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0, 0, ret_payload);
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};
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if (ret)
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panic("PMUFW is not found - Please load it!\n");
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pm_api_version = ret_payload[1];
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if (pm_api_version < ZYNQMP_PM_VERSION)
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panic("PMUFW version error. Expected: v%d.%d\n",
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ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
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}
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return pm_api_version;
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};
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static int zynqmp_power_probe(struct udevice *dev)
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{
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int ret = 0;
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debug("%s, (dev=%p)\n", __func__, dev);
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ret = mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan);
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if (ret) {
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debug("%s, cannot tx mailbox\n", __func__);
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return ret;
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}
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ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan);
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if (ret) {
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debug("%s, cannot rx mailbox\n", __func__);
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return ret;
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}
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ret = zynqmp_firmware_version();
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printf("PMUFW:\tv%d.%d\n",
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ret >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
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ret & ZYNQMP_PM_VERSION_MINOR_MASK);
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return 0;
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};
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static const struct udevice_id zynqmp_power_ids[] = {
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{ .compatible = "xlnx,zynqmp-power" },
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{ }
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};
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U_BOOT_DRIVER(zynqmp_power) = {
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.name = "zynqmp_power",
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.id = UCLASS_FIRMWARE,
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.of_match = zynqmp_power_ids,
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.probe = zynqmp_power_probe,
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};
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#endif
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static const struct udevice_id zynqmp_firmware_ids[] = {
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{ .compatible = "xlnx,zynqmp-firmware" },
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{ .compatible = "xlnx,versal-firmware"},
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{ }
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};
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U_BOOT_DRIVER(zynqmp_firmware) = {
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.id = UCLASS_FIRMWARE,
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.name = "zynqmp-firmware",
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.probe = dm_scan_fdt_dev,
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.of_match = zynqmp_firmware_ids,
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};
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