GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/firmware/Kconfig

@@ -0,0 +1,38 @@
+config FIRMWARE
+	bool "Enable Firmware driver support"
+
+config SPL_FIRMWARE
+	bool "Enable Firmware driver support in SPL"
+	depends on FIRMWARE
+
+config SPL_ARM_PSCI_FW
+	bool
+	select SPL_FIRMWARE
+
+config ARM_PSCI_FW
+	bool
+	select FIRMWARE
+
+config TI_SCI_PROTOCOL
+	tristate "TI System Control Interface (TISCI) Message Protocol"
+	depends on K3_SEC_PROXY
+	select FIRMWARE
+	select SPL_FIRMWARE if SPL
+	help
+	  TI System Control Interface (TISCI) Message Protocol is used to manage
+	  compute systems such as ARM, DSP etc with the system controller in
+	  complex System on Chip (SoC) such as those found on certain K3
+	  generation SoC from TI.
+
+	  This protocol library is used by client drivers to use the features
+	  provided by the system controller.
+
+config ZYNQMP_FIRMWARE
+	bool "ZynqMP Firmware interface"
+	select FIRMWARE
+	help
+	  Firmware interface driver is used by different
+	  drivers to communicate with the firmware for
+	  various platform management services.
+	  Say yes to enable ZynqMP firmware interface driver.
+	  If in doubt, say N.

source/bootloader/u-boot-2020.01/drivers/firmware/Makefile

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+obj-$(CONFIG_FIRMWARE)		+= firmware-uclass.o
+obj-$(CONFIG_$(SPL_)ARM_PSCI_FW)	+= psci.o
+obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o
+obj-$(CONFIG_SANDBOX)		+= firmware-sandbox.o
+obj-$(CONFIG_ZYNQMP_FIRMWARE)	+= firmware-zynqmp.o

source/bootloader/u-boot-2020.01/drivers/firmware/firmware-sandbox.c

@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * sandbox firmware driver
+ *
+ * Copyright (C) 2018 Xilinx, Inc.
+ */
+
+#include <common.h>
+#include <dm.h>
+
+static const struct udevice_id generic_sandbox_firmware_ids[] = {
+	{ .compatible = "sandbox,firmware" },
+	{ }
+};
+
+U_BOOT_DRIVER(sandbox_firmware) = {
+	.name = "sandbox_firmware",
+	.id = UCLASS_FIRMWARE,
+	.of_match = generic_sandbox_firmware_ids,
+};

source/bootloader/u-boot-2020.01/drivers/firmware/firmware-uclass.c

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <common.h>
+#include <dm.h>
+
+/* Firmware access is platform-dependent.  No generic code in uclass */
+UCLASS_DRIVER(firmware) = {
+	.id		= UCLASS_FIRMWARE,
+	.name		= "firmware",
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+	.post_bind	= dm_scan_fdt_dev,
+#endif
+};

source/bootloader/u-boot-2020.01/drivers/firmware/firmware-zynqmp.c

@@ -0,0 +1,192 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx Zynq MPSoC Firmware driver
+ *
+ * Copyright (C) 2018-2019 Xilinx, Inc.
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <zynqmp_firmware.h>
+
+#if defined(CONFIG_ZYNQMP_IPI)
+#include <mailbox.h>
+#include <asm/arch/sys_proto.h>
+
+#define PMUFW_PAYLOAD_ARG_CNT	8
+
+struct zynqmp_power {
+	struct mbox_chan tx_chan;
+	struct mbox_chan rx_chan;
+} zynqmp_power;
+
+static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen)
+{
+	struct zynqmp_ipi_msg msg;
+	int ret;
+
+	if (req_len > PMUFW_PAYLOAD_ARG_CNT ||
+	    res_maxlen > PMUFW_PAYLOAD_ARG_CNT)
+		return -EINVAL;
+
+	if (!(zynqmp_power.tx_chan.dev) || !(&zynqmp_power.rx_chan.dev))
+		return -EINVAL;
+
+	msg.buf = (u32 *)req;
+	msg.len = req_len;
+	ret = mbox_send(&zynqmp_power.tx_chan, &msg);
+	if (ret) {
+		debug("%s: Sending message failed\n", __func__);
+		return ret;
+	}
+
+	msg.buf = res;
+	msg.len = res_maxlen;
+	ret = mbox_recv(&zynqmp_power.rx_chan, &msg, 100);
+	if (ret)
+		debug("%s: Receiving message failed\n", __func__);
+
+	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))
+		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;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	static u32 pm_api_version = ZYNQMP_PM_VERSION_INVALID;
+
+	/*
+	 * Get PMU version only once and later
+	 * just return stored values instead of
+	 * 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);
+		if (ret)
+			panic("PMUFW is not found - Please load it!\n");
+
+		pm_api_version = ret_payload[1];
+		if (pm_api_version < ZYNQMP_PM_VERSION)
+			panic("PMUFW version error. Expected: v%d.%d\n",
+			      ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR);
+	}
+
+	return pm_api_version;
+};
+
+/**
+ * Send a configuration object to the PMU firmware.
+ *
+ * @cfg_obj: Pointer to the configuration object
+ * @size:    Size of @cfg_obj in bytes
+ */
+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;
+	int err;
+
+	printf("Loading new PMUFW cfg obj (%ld bytes)\n", size);
+
+	err = send_req(request, ARRAY_SIZE(request), &response, 1);
+	if (err)
+		panic("Cannot load PMUFW configuration object (%d)\n", err);
+	if (response != 0)
+		panic("PMUFW returned 0x%08x status!\n", response);
+}
+
+static int zynqmp_power_probe(struct udevice *dev)
+{
+	int ret;
+
+	debug("%s, (dev=%p)\n", __func__, dev);
+
+	ret = mbox_get_by_name(dev, "tx", &zynqmp_power.tx_chan);
+	if (ret) {
+		debug("%s: Cannot find tx mailbox\n", __func__);
+		return ret;
+	}
+
+	ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan);
+	if (ret) {
+		debug("%s: Cannot find rx mailbox\n", __func__);
+		return ret;
+	}
+
+	ret = zynqmp_firmware_version();
+	printf("PMUFW:\tv%d.%d\n",
+	       ret >> ZYNQMP_PM_VERSION_MAJOR_SHIFT,
+	       ret & ZYNQMP_PM_VERSION_MINOR_MASK);
+
+	return 0;
+};
+
+static const struct udevice_id zynqmp_power_ids[] = {
+	{ .compatible = "xlnx,zynqmp-power" },
+	{ }
+};
+
+U_BOOT_DRIVER(zynqmp_power) = {
+	.name = "zynqmp_power",
+	.id = UCLASS_FIRMWARE,
+	.of_match = zynqmp_power_ids,
+	.probe = zynqmp_power_probe,
+};
+#endif
+
+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;
+
+	if (current_el() == 3) {
+		printf("%s: Can't call SMC from EL3 context\n", __func__);
+		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);
+
+	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];
+}
+
+static const struct udevice_id zynqmp_firmware_ids[] = {
+	{ .compatible = "xlnx,zynqmp-firmware" },
+	{ .compatible = "xlnx,versal-firmware"},
+	{ }
+};
+
+U_BOOT_DRIVER(zynqmp_firmware) = {
+	.id = UCLASS_FIRMWARE,
+	.name = "zynqmp-firmware",
+	.probe = dm_scan_fdt_dev,
+	.of_match = zynqmp_firmware_ids,
+};

source/bootloader/u-boot-2020.01/drivers/firmware/psci.c

@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * Based on drivers/firmware/psci.c from Linux:
+ * Copyright (C) 2015 ARM Limited
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <irq_func.h>
+#include <dm/lists.h>
+#include <efi_loader.h>
+#include <linux/libfdt.h>
+#include <linux/arm-smccc.h>
+#include <linux/errno.h>
+#include <linux/printk.h>
+#include <linux/psci.h>
+
+#define DRIVER_NAME "psci"
+
+#define PSCI_METHOD_HVC 1
+#define PSCI_METHOD_SMC 2
+
+int __efi_runtime_data psci_method;
+
+unsigned long __efi_runtime invoke_psci_fn
+		(unsigned long function_id, unsigned long arg0,
+		 unsigned long arg1, unsigned long arg2)
+{
+	struct arm_smccc_res res;
+
+	/*
+	 * In the __efi_runtime we need to avoid the switch statement. In some
+	 * cases the compiler creates lookup tables to implement switch. These
+	 * tables are not correctly relocated when SetVirtualAddressMap is
+	 * called.
+	 */
+	if (psci_method == PSCI_METHOD_SMC)
+		arm_smccc_smc(function_id, arg0, arg1, arg2, 0, 0, 0, 0, &res);
+	else if (psci_method == PSCI_METHOD_HVC)
+		arm_smccc_hvc(function_id, arg0, arg1, arg2, 0, 0, 0, 0, &res);
+	else
+		res.a0 = PSCI_RET_DISABLED;
+	return res.a0;
+}
+
+static int psci_bind(struct udevice *dev)
+{
+	/* No SYSTEM_RESET support for PSCI 0.1 */
+	if (device_is_compatible(dev, "arm,psci-0.2") ||
+	    device_is_compatible(dev, "arm,psci-1.0")) {
+		int ret;
+
+		/* bind psci-sysreset optionally */
+		ret = device_bind_driver(dev, "psci-sysreset", "psci-sysreset",
+					 NULL);
+		if (ret)
+			pr_debug("PSCI System Reset was not bound.\n");
+	}
+
+	return 0;
+}
+
+static int psci_probe(struct udevice *dev)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	const char *method;
+
+	method = fdt_stringlist_get(gd->fdt_blob, dev_of_offset(dev), "method",
+				    0, NULL);
+	if (!method) {
+		pr_warn("missing \"method\" property\n");
+		return -ENXIO;
+	}
+
+	if (!strcmp("hvc", method)) {
+		psci_method = PSCI_METHOD_HVC;
+	} else if (!strcmp("smc", method)) {
+		psci_method = PSCI_METHOD_SMC;
+	} else {
+		pr_warn("invalid \"method\" property: %s\n", method);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/**
+ * void do_psci_probe() - probe PSCI firmware driver
+ *
+ * Ensure that psci_method is initialized.
+ */
+static void __maybe_unused do_psci_probe(void)
+{
+	struct udevice *dev;
+
+	uclass_get_device_by_name(UCLASS_FIRMWARE, DRIVER_NAME, &dev);
+}
+
+#if IS_ENABLED(CONFIG_EFI_LOADER) && IS_ENABLED(CONFIG_PSCI_RESET)
+efi_status_t efi_reset_system_init(void)
+{
+	do_psci_probe();
+	return EFI_SUCCESS;
+}
+
+void __efi_runtime EFIAPI efi_reset_system(enum efi_reset_type reset_type,
+					   efi_status_t reset_status,
+					   unsigned long data_size,
+					   void *reset_data)
+{
+	if (reset_type == EFI_RESET_COLD ||
+	    reset_type == EFI_RESET_WARM ||
+	    reset_type == EFI_RESET_PLATFORM_SPECIFIC) {
+		invoke_psci_fn(PSCI_0_2_FN_SYSTEM_RESET, 0, 0, 0);
+	} else if (reset_type == EFI_RESET_SHUTDOWN) {
+		invoke_psci_fn(PSCI_0_2_FN_SYSTEM_OFF, 0, 0, 0);
+	}
+	while (1)
+		;
+}
+#endif /* IS_ENABLED(CONFIG_EFI_LOADER) && IS_ENABLED(CONFIG_PSCI_RESET) */
+
+#ifdef CONFIG_PSCI_RESET
+void reset_misc(void)
+{
+	do_psci_probe();
+	invoke_psci_fn(PSCI_0_2_FN_SYSTEM_RESET, 0, 0, 0);
+}
+#endif /* CONFIG_PSCI_RESET */
+
+#ifdef CONFIG_CMD_POWEROFF
+int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	do_psci_probe();
+
+	puts("poweroff ...\n");
+	udelay(50000); /* wait 50 ms */
+
+	disable_interrupts();
+	invoke_psci_fn(PSCI_0_2_FN_SYSTEM_OFF, 0, 0, 0);
+	enable_interrupts();
+
+	log_err("Power off not supported on this platform\n");
+	return CMD_RET_FAILURE;
+}
+#endif
+
+static const struct udevice_id psci_of_match[] = {
+	{ .compatible = "arm,psci" },
+	{ .compatible = "arm,psci-0.2" },
+	{ .compatible = "arm,psci-1.0" },
+	{},
+};
+
+U_BOOT_DRIVER(psci) = {
+	.name = DRIVER_NAME,
+	.id = UCLASS_FIRMWARE,
+	.of_match = psci_of_match,
+	.bind = psci_bind,
+	.probe = psci_probe,
+};