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Diffstat (limited to '')
| -rw-r--r-- | plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c new file mode 100644 index 0000000..59c3779 --- /dev/null +++ b/plat/imx/imx8m/imx8mq/imx8mq_bl31_setup.c @@ -0,0 +1,242 @@ +/* + * Copyright (c) 2018-2022, 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; + 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) +{ + 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); + +#if DEBUG_CONSOLE + static console_t console; + + console_imx_uart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ, + IMX_CONSOLE_BAUDRATE, &console); +#endif + + 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) +{ + mmap_add_region(BL31_BASE, BL31_BASE, (BL31_LIMIT - BL31_BASE), + MT_MEMORY | MT_RW | MT_SECURE); + mmap_add_region(BL_CODE_BASE, BL_CODE_BASE, (BL_CODE_END - BL_CODE_BASE), + MT_MEMORY | MT_RO | MT_SECURE); + + /* Map TEE memory */ + mmap_add_region(BL32_BASE, BL32_BASE, BL32_SIZE, MT_MEMORY | MT_RW); + + mmap_add(imx_mmap); + +#if USE_COHERENT_MEM + mmap_add_region(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_BASE, + BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, + MT_DEVICE | MT_RW | MT_SECURE); +#endif + /* setup xlat table */ + init_xlat_tables(); + /* 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; +} + +void bl31_plat_runtime_setup(void) +{ + return; +} + +#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 |