diff options
Diffstat (limited to 'plat/imx/imx8m/imx8mm/imx8mm_bl31_setup.c')
| -rw-r--r-- | plat/imx/imx8m/imx8mm/imx8mm_bl31_setup.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/plat/imx/imx8m/imx8mm/imx8mm_bl31_setup.c b/plat/imx/imx8m/imx8mm/imx8mm_bl31_setup.c new file mode 100644 index 0000000..67bfd36 --- /dev/null +++ b/plat/imx/imx8m/imx8mm/imx8mm_bl31_setup.c @@ -0,0 +1,252 @@ +/* + * Copyright (c) 2019-2022 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 <dram.h> +#include <gpc.h> +#include <imx_aipstz.h> +#include <imx_uart.h> +#include <imx_rdc.h> +#include <imx8m_caam.h> +#include <imx8m_csu.h> +#include <plat_imx8.h> + +#define TRUSTY_PARAMS_LEN_BYTES (4096*2) + +/* + * Note: DRAM region is mapped with entire size available and uses MT_RW + * attributes. + * See details in docs/plat/imx8m.rst "High Assurance Boot (HABv4)" section + * for explanation of this mapping scheme. + */ +static const mmap_region_t imx_mmap[] = { + MAP_REGION_FLAT(IMX_GIC_BASE, IMX_GIC_SIZE, MT_DEVICE | MT_RW), + MAP_REGION_FLAT(IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE | MT_RW), /* AIPS map */ + MAP_REGION_FLAT(OCRAM_S_BASE, OCRAM_S_SIZE, MT_DEVICE | MT_RW), /* OCRAM_S */ + MAP_REGION_FLAT(IMX_DDRPHY_BASE, IMX_DDR_IPS_SIZE, MT_DEVICE | MT_RW), /* DDRMIX */ + MAP_REGION_FLAT(IMX_VPUMIX_BASE, IMX_VPUMIX_SIZE, MT_DEVICE | MT_RW), /* VPUMIX */ + MAP_REGION_FLAT(IMX_CAAM_RAM_BASE, IMX_CAAM_RAM_SIZE, MT_MEMORY | MT_RW), /* CAMM RAM */ + MAP_REGION_FLAT(IMX_NS_OCRAM_BASE, IMX_NS_OCRAM_SIZE, MT_MEMORY | MT_RW), /* NS OCRAM */ + MAP_REGION_FLAT(IMX_ROM_BASE, IMX_ROM_SIZE, MT_MEMORY | MT_RO), /* ROM code */ + MAP_REGION_FLAT(IMX_DRAM_BASE, IMX_DRAM_SIZE, MT_MEMORY | MT_RW | MT_NS), /* DRAM */ + {0}, +}; + +static const struct aipstz_cfg aipstz[] = { + {IMX_AIPSTZ1, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, + {IMX_AIPSTZ2, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, + {IMX_AIPSTZ3, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, + {IMX_AIPSTZ4, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, }, + {0}, +}; + +static const struct imx_rdc_cfg rdc[] = { + /* Master domain assignment */ + RDC_MDAn(RDC_MDA_M4, DID1), + + /* peripherals domain permission */ + RDC_PDAPn(RDC_PDAP_UART4, D1R | D1W), + RDC_PDAPn(RDC_PDAP_UART2, D0R | D0W), + + /* memory region */ + + /* Sentinel */ + {0}, +}; + +static const struct imx_csu_cfg csu_cfg[] = { + /* peripherals csl setting */ + CSU_CSLx(0x1, CSU_SEC_LEVEL_0, UNLOCKED), + + /* master HP0~1 */ + + /* SA setting */ + + /* HP control setting */ + + /* Sentinel */ + {0} +}; + +static entry_point_info_t bl32_image_ep_info; +static entry_point_info_t bl33_image_ep_info; + +/* 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; +} + +void bl31_tzc380_setup(void) +{ + unsigned int val; + + val = mmio_read_32(IMX_IOMUX_GPR_BASE + 0x28); + 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.mx8mm. + */ + + /* 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, 0x00ff00ff); + } + + imx_aipstz_init(aipstz); + + imx_rdc_init(rdc); + + imx_csu_init(csu_cfg); + + 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_tzc380_setup(); +} + +#define MAP_BL31_TOTAL \ + MAP_REGION_FLAT(BL31_START, BL31_SIZE, MT_MEMORY | MT_RW | MT_SECURE) +#define MAP_BL31_RO \ + MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, MT_MEMORY | MT_RO | MT_SECURE) +#define MAP_COHERENT_MEM \ + MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \ + MT_DEVICE | MT_RW | MT_SECURE) +#define MAP_BL32_TOTAL \ + MAP_REGION_FLAT(BL32_BASE, BL32_SIZE, MT_MEMORY | MT_RW) + +void bl31_plat_arch_setup(void) +{ + const mmap_region_t bl_regions[] = { + MAP_BL31_TOTAL, + MAP_BL31_RO, +#if USE_COHERENT_MEM + MAP_COHERENT_MEM, +#endif + /* Map TEE memory */ + MAP_BL32_TOTAL, + {0} + }; + + setup_page_tables(bl_regions, imx_mmap); + enable_mmu_el3(0); +} + +void bl31_platform_setup(void) +{ + generic_delay_timer_init(); + + /* select the CKIL source to 32K OSC */ + mmio_write_32(IMX_ANAMIX_BASE + ANAMIX_MISC_CTL, 0x1); + + /* Init the dram info */ + dram_info_init(SAVED_DRAM_TIMING_BASE); + + plat_gic_driver_init(); + plat_gic_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 |