plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c - TF-A/trusted-firmware-a - Gitiles

 /*
  * Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <assert.h>
 #include <stdbool.h>

 #include <platform_def.h>

 #include <arch_helpers.h>
 #include <common/bl_common.h>
 #include <common/debug.h>
 #include <context.h>
 #include <drivers/arm/tzc380.h>
 #include <drivers/console.h>
 #include <drivers/generic_delay_timer.h>
 #include <lib/el3_runtime/context_mgmt.h>
 #include <lib/mmio.h>
 #include <lib/xlat_tables/xlat_tables_v2.h>
 #include <plat/common/platform.h>

 #include <gpc.h>
 #include <imx_aipstz.h>
 #include <imx_uart.h>
 #include <imx8m_caam.h>
 #include <plat_imx8.h>

 #define TRUSTY_PARAMS_LEN_BYTES      (4096*2)

 static const mmap_region_t imx_mmap[] = {
 	MAP_REGION_FLAT(GPV_BASE, GPV_SIZE, MT_DEVICE | MT_RW), /* GPV map */
 	MAP_REGION_FLAT(IMX_ROM_BASE, IMX_ROM_SIZE, MT_MEMORY | MT_RO), /* ROM map */
 	MAP_REGION_FLAT(IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE | MT_RW), /* AIPS map */
 	MAP_REGION_FLAT(IMX_GIC_BASE, IMX_GIC_SIZE, MT_DEVICE | MT_RW), /* GIC map */
 	{0},
 };

 static const struct aipstz_cfg aipstz[] = {
 	{AIPSTZ1_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
 	{AIPSTZ2_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
 	{AIPSTZ3_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
 	{AIPSTZ4_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
 	{0},
 };

 static entry_point_info_t bl32_image_ep_info;
 static entry_point_info_t bl33_image_ep_info;

 static uint32_t imx_soc_revision;

 int imx_soc_info_handler(uint32_t smc_fid, u_register_t x1, u_register_t x2,
 				u_register_t x3)
 {
 	return imx_soc_revision;
 }

 #define ANAMIX_DIGPROG		0x6c
 #define ROM_SOC_INFO_A0		0x800
 #define ROM_SOC_INFO_B0		0x83C
 #define OCOTP_SOC_INFO_B1	0x40

 static void imx8mq_soc_info_init(void)
 {
 	uint32_t rom_version;
 	uint32_t ocotp_val;

 	imx_soc_revision = mmio_read_32(IMX_ANAMIX_BASE + ANAMIX_DIGPROG);
 	rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_A0);
 	if (rom_version == 0x10)
 		return;

 	rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_B0);
 	if (rom_version == 0x20) {
 		imx_soc_revision &= ~0xff;
 		imx_soc_revision |= rom_version;
 		return;
 	}

 	/* 0xff0055aa is magic number for B1 */
 	ocotp_val = mmio_read_32(IMX_OCOTP_BASE + OCOTP_SOC_INFO_B1);
 	if (ocotp_val == 0xff0055aa) {
 		imx_soc_revision &= ~0xff;
 		if (rom_version == 0x22) {
 			imx_soc_revision |= 0x22;
 		} else {
 			imx_soc_revision |= 0x21;
 		}
 		return;
 	}
 }

 /* get SPSR for BL33 entry */
 static uint32_t get_spsr_for_bl33_entry(void)
 {
 	unsigned long el_status;
 	unsigned long mode;
 	uint32_t spsr;

 	/* figure out what mode we enter the non-secure world */
 	el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
 	el_status &= ID_AA64PFR0_ELX_MASK;

 	mode = (el_status) ? MODE_EL2 : MODE_EL1;

 	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
 	return spsr;
 }

 static void bl31_tz380_setup(void)
 {
 	unsigned int val;

 	val = mmio_read_32(IMX_IOMUX_GPR_BASE + IOMUXC_GPR10);
 	if ((val & GPR_TZASC_EN) != GPR_TZASC_EN)
 		return;

 	tzc380_init(IMX_TZASC_BASE);
 	/*
 	 * Need to substact offset 0x40000000 from CPU address when
 	 * programming tzasc region for i.mx8mq. Enable 1G-5G S/NS RW
 	 */
 	tzc380_configure_region(0, 0x00000000, TZC_ATTR_REGION_SIZE(TZC_REGION_SIZE_4G) |
 				TZC_ATTR_REGION_EN_MASK | TZC_ATTR_SP_ALL);
 }

 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;
 	int i;
 	/* enable CSU NS access permission */
 	for (i = 0; i < 64; i++) {
 		mmio_write_32(IMX_CSU_BASE + i * 4, 0xffffffff);
 	}

 	imx_aipstz_init(aipstz);

 	console_imx_uart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ,
 		IMX_CONSOLE_BAUDRATE, &console);
 	/* This console is only used for boot stage */
 	console_set_scope(&console, CONSOLE_FLAG_BOOT);

 	imx8m_caam_init();

 	/*
 	 * tell BL3-1 where the non-secure software image is located
 	 * and the entry state information.
 	 */
 	bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET;
 	bl33_image_ep_info.spsr = get_spsr_for_bl33_entry();
 	SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);

 #if defined(SPD_opteed) || defined(SPD_trusty)
 	/* Populate entry point information for BL32 */
 	SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0);
 	SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
 	bl32_image_ep_info.pc = BL32_BASE;
 	bl32_image_ep_info.spsr = 0;

 	/* Pass TEE base and size to bl33 */
 	bl33_image_ep_info.args.arg1 = BL32_BASE;
 	bl33_image_ep_info.args.arg2 = BL32_SIZE;

 #ifdef SPD_trusty
 	bl32_image_ep_info.args.arg0 = BL32_SIZE;
 	bl32_image_ep_info.args.arg1 = BL32_BASE;
 #else
 	/* Make sure memory is clean */
 	mmio_write_32(BL32_FDT_OVERLAY_ADDR, 0);
 	bl33_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
 	bl32_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
 #endif
 #endif

 	bl31_tz380_setup();
 }

 void bl31_plat_arch_setup(void)
 {
 	const mmap_region_t bl_regions[] = {
 		MAP_REGION_FLAT(BL31_START, BL31_SIZE,
 				MT_MEMORY | MT_RW | MT_SECURE),
 		MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE,
 				MT_MEMORY | MT_RO | MT_SECURE),
 #if USE_COHERENT_MEM
 		MAP_REGION_FLAT(BL_COHERENT_RAM_BASE,
 				BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE,
 				MT_DEVICE | MT_RW | MT_SECURE),
 #endif
 		/* Map TEE memory */
 		MAP_REGION_FLAT(BL32_BASE, BL32_SIZE, MT_MEMORY | MT_RW),
 		{0},
 	};

 	setup_page_tables(bl_regions, imx_mmap);
 	/* enable the MMU */
 	enable_mmu_el3(0);
 }

 void bl31_platform_setup(void)
 {
 	generic_delay_timer_init();

 	/* init the GICv3 cpu and distributor interface */
 	plat_gic_driver_init();
 	plat_gic_init();

 	/* determine SOC revision for erratas */
 	imx8mq_soc_info_init();

 	/* gpc init */
 	imx_gpc_init();
 }

 entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
 {
 	if (type == NON_SECURE)
 		return &bl33_image_ep_info;
 	if (type == SECURE)
 		return &bl32_image_ep_info;

 	return NULL;
 }

 unsigned int plat_get_syscnt_freq2(void)
 {
 	return COUNTER_FREQUENCY;
 }

 #ifdef SPD_trusty
 void plat_trusty_set_boot_args(aapcs64_params_t *args)
 {
 	args->arg0 = BL32_SIZE;
 	args->arg1 = BL32_BASE;
 	args->arg2 = TRUSTY_PARAMS_LEN_BYTES;
 }
 #endif
	/*
	* Copyright (c) 2018-2023, ARM Limited and Contributors. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <assert.h>
	#include <stdbool.h>

	#include <platform_def.h>

	#include <arch_helpers.h>
	#include <common/bl_common.h>
	#include <common/debug.h>
	#include <context.h>
	#include <drivers/arm/tzc380.h>
	#include <drivers/console.h>
	#include <drivers/generic_delay_timer.h>
	#include <lib/el3_runtime/context_mgmt.h>
	#include <lib/mmio.h>
	#include <lib/xlat_tables/xlat_tables_v2.h>
	#include <plat/common/platform.h>

	#include <gpc.h>
	#include <imx_aipstz.h>
	#include <imx_uart.h>
	#include <imx8m_caam.h>
	#include <plat_imx8.h>

	#define TRUSTY_PARAMS_LEN_BYTES (4096*2)

	static const mmap_region_t imx_mmap[] = {
	MAP_REGION_FLAT(GPV_BASE, GPV_SIZE, MT_DEVICE \| MT_RW), /* GPV map */
	MAP_REGION_FLAT(IMX_ROM_BASE, IMX_ROM_SIZE, MT_MEMORY \| MT_RO), /* ROM map */
	MAP_REGION_FLAT(IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE \| MT_RW), /* AIPS map */
	MAP_REGION_FLAT(IMX_GIC_BASE, IMX_GIC_SIZE, MT_DEVICE \| MT_RW), /* GIC map */
	{0},
	};

	static const struct aipstz_cfg aipstz[] = {
	{AIPSTZ1_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
	{AIPSTZ2_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
	{AIPSTZ3_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
	{AIPSTZ4_BASE, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
	{0},
	};

	static entry_point_info_t bl32_image_ep_info;
	static entry_point_info_t bl33_image_ep_info;

	static uint32_t imx_soc_revision;

	int imx_soc_info_handler(uint32_t smc_fid, u_register_t x1, u_register_t x2,
	u_register_t x3)
	{
	return imx_soc_revision;
	}

	#define ANAMIX_DIGPROG 0x6c
	#define ROM_SOC_INFO_A0 0x800
	#define ROM_SOC_INFO_B0 0x83C
	#define OCOTP_SOC_INFO_B1 0x40

	static void imx8mq_soc_info_init(void)
	{
	uint32_t rom_version;
	uint32_t ocotp_val;

	imx_soc_revision = mmio_read_32(IMX_ANAMIX_BASE + ANAMIX_DIGPROG);
	rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_A0);
	if (rom_version == 0x10)
	return;

	rom_version = mmio_read_8(IMX_ROM_BASE + ROM_SOC_INFO_B0);
	if (rom_version == 0x20) {
	imx_soc_revision &= ~0xff;
	imx_soc_revision \|= rom_version;
	return;
	}

	/* 0xff0055aa is magic number for B1 */
	ocotp_val = mmio_read_32(IMX_OCOTP_BASE + OCOTP_SOC_INFO_B1);
	if (ocotp_val == 0xff0055aa) {
	imx_soc_revision &= ~0xff;
	if (rom_version == 0x22) {
	imx_soc_revision \|= 0x22;
	} else {
	imx_soc_revision \|= 0x21;
	}
	return;
	}
	}

	/* get SPSR for BL33 entry */
	static uint32_t get_spsr_for_bl33_entry(void)
	{
	unsigned long el_status;
	unsigned long mode;
	uint32_t spsr;

	/* figure out what mode we enter the non-secure world */
	el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
	el_status &= ID_AA64PFR0_ELX_MASK;

	mode = (el_status) ? MODE_EL2 : MODE_EL1;

	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
	return spsr;
	}

	static void bl31_tz380_setup(void)
	{
	unsigned int val;

	val = mmio_read_32(IMX_IOMUX_GPR_BASE + IOMUXC_GPR10);
	if ((val & GPR_TZASC_EN) != GPR_TZASC_EN)
	return;

	tzc380_init(IMX_TZASC_BASE);
	/*
	* Need to substact offset 0x40000000 from CPU address when
	* programming tzasc region for i.mx8mq. Enable 1G-5G S/NS RW
	*/
	tzc380_configure_region(0, 0x00000000, TZC_ATTR_REGION_SIZE(TZC_REGION_SIZE_4G) \|
	TZC_ATTR_REGION_EN_MASK \| TZC_ATTR_SP_ALL);
	}

	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;
	int i;
	/* enable CSU NS access permission */
	for (i = 0; i < 64; i++) {
	mmio_write_32(IMX_CSU_BASE + i * 4, 0xffffffff);
	}

	imx_aipstz_init(aipstz);

	console_imx_uart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ,
	IMX_CONSOLE_BAUDRATE, &console);
	/* This console is only used for boot stage */
	console_set_scope(&console, CONSOLE_FLAG_BOOT);

	imx8m_caam_init();

	/*
	* tell BL3-1 where the non-secure software image is located
	* and the entry state information.
	*/
	bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET;
	bl33_image_ep_info.spsr = get_spsr_for_bl33_entry();
	SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);

	#if defined(SPD_opteed) \|\| defined(SPD_trusty)
	/* Populate entry point information for BL32 */
	SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0);
	SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
	bl32_image_ep_info.pc = BL32_BASE;
	bl32_image_ep_info.spsr = 0;

	/* Pass TEE base and size to bl33 */
	bl33_image_ep_info.args.arg1 = BL32_BASE;
	bl33_image_ep_info.args.arg2 = BL32_SIZE;

	#ifdef SPD_trusty
	bl32_image_ep_info.args.arg0 = BL32_SIZE;
	bl32_image_ep_info.args.arg1 = BL32_BASE;
	#else
	/* Make sure memory is clean */
	mmio_write_32(BL32_FDT_OVERLAY_ADDR, 0);
	bl33_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
	bl32_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
	#endif
	#endif

	bl31_tz380_setup();
	}

	void bl31_plat_arch_setup(void)
	{
	const mmap_region_t bl_regions[] = {
	MAP_REGION_FLAT(BL31_START, BL31_SIZE,
	MT_MEMORY \| MT_RW \| MT_SECURE),
	MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE,
	MT_MEMORY \| MT_RO \| MT_SECURE),
	#if USE_COHERENT_MEM
	MAP_REGION_FLAT(BL_COHERENT_RAM_BASE,
	BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE,
	MT_DEVICE \| MT_RW \| MT_SECURE),
	#endif
	/* Map TEE memory */
	MAP_REGION_FLAT(BL32_BASE, BL32_SIZE, MT_MEMORY \| MT_RW),
	{0},
	};

	setup_page_tables(bl_regions, imx_mmap);
	/* enable the MMU */
	enable_mmu_el3(0);
	}

	void bl31_platform_setup(void)
	{
	generic_delay_timer_init();

	/* init the GICv3 cpu and distributor interface */
	plat_gic_driver_init();
	plat_gic_init();

	/* determine SOC revision for erratas */
	imx8mq_soc_info_init();

	/* gpc init */
	imx_gpc_init();
	}

	entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
	{
	if (type == NON_SECURE)
	return &bl33_image_ep_info;
	if (type == SECURE)
	return &bl32_image_ep_info;

	return NULL;
	}

	unsigned int plat_get_syscnt_freq2(void)
	{
	return COUNTER_FREQUENCY;
	}

	#ifdef SPD_trusty
	void plat_trusty_set_boot_args(aapcs64_params_t *args)
	{
	args->arg0 = BL32_SIZE;
	args->arg1 = BL32_BASE;
	args->arg2 = TRUSTY_PARAMS_LEN_BYTES;
	}
	#endif