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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright (c) 2020, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/* System Includes */
+#include <assert.h>
+
+/* Project Includes */
+#include <common/bl_common.h>
+#include <common/debug.h>
+#include <common/desc_image_load.h>
+#include <drivers/generic_delay_timer.h>
+#include <drivers/ti/uart/uart_16550.h>
+#include <lib/coreboot.h>
+
+/* Platform Includes */
+#include <devapc/devapc.h>
+#include <emi_mpu/emi_mpu.h>
+#include <gpio/mtgpio.h>
+#include <mt_gic_v3.h>
+#include <mt_spm.h>
+#include <mt_timer.h>
+#include <mtk_dcm.h>
+#include <plat_params.h>
+#include <plat_private.h>
+
+static entry_point_info_t bl32_ep_info;
+static entry_point_info_t bl33_ep_info;
+
+/*******************************************************************************
+ * Return a pointer to the 'entry_point_info' structure of the next image for
+ * the security state specified. BL33 corresponds to the non-secure image type
+ * while BL32 corresponds to the secure image type. A NULL pointer is returned
+ * if the image does not exist.
+ ******************************************************************************/
+entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
+{
+	entry_point_info_t *next_image_info;
+
+	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
+	assert(next_image_info->h.type == PARAM_EP);
+
+	/* None of the images on this platform can have 0x0 as the entrypoint */
+	if (next_image_info->pc) {
+		return next_image_info;
+	} else {
+		return NULL;
+	}
+}
+
+/*******************************************************************************
+ * Perform any BL31 early platform setup. Here is an opportunity to copy
+ * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
+ * are lost (potentially). This needs to be done before the MMU is initialized
+ * so that the memory layout can be used while creating page tables.
+ * BL2 has flushed this information to memory, so we are guaranteed to pick up
+ * good data.
+ ******************************************************************************/
+void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
+				u_register_t arg2, u_register_t arg3)
+{
+	static console_t console;
+
+	params_early_setup(arg1);
+
+#if COREBOOT
+	if (coreboot_serial.type) {
+		console_16550_register(coreboot_serial.baseaddr,
+				       coreboot_serial.input_hertz,
+				       coreboot_serial.baud,
+				       &console);
+	}
+#else
+	console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);
+#endif
+
+	NOTICE("MT8192 bl31_setup\n");
+
+	bl31_params_parse_helper(arg0, &bl32_ep_info, &bl33_ep_info);
+}
+
+
+/*******************************************************************************
+ * Perform any BL31 platform setup code
+ ******************************************************************************/
+void bl31_platform_setup(void)
+{
+	/* Set dcm on */
+	if (!dcm_set_default()) {
+		ERROR("Failed to set default dcm on!!\n");
+	}
+
+	/* MPU Init */
+	emi_mpu_init();
+
+	/* DAPC Init */
+	devapc_init();
+
+	/* Initialize the GIC driver, CPU and distributor interfaces */
+	mt_gic_driver_init();
+	mt_gic_init();
+
+	mt_gpio_init();
+	mt_systimer_init();
+	generic_delay_timer_init();
+	spm_boot_init();
+}
+
+/*******************************************************************************
+ * Perform the very early platform specific architectural setup here. At the
+ * moment this is only intializes the mmu in a quick and dirty way.
+ ******************************************************************************/
+void bl31_plat_arch_setup(void)
+{
+	plat_configure_mmu_el3(BL31_START,
+			       BL31_END - BL31_START,
+			       BL_CODE_BASE,
+			       BL_CODE_END);
+}