| /* |
| * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. |
| * Copyright 2017 NXP |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch_helpers.h> |
| #include <assert.h> |
| #include <bl_common.h> |
| #include <cci.h> |
| #include <console.h> |
| #include <context.h> |
| #include <context_mgmt.h> |
| #include <debug.h> |
| #include <mmio.h> |
| #include <platform.h> |
| #include <platform_def.h> |
| #include <plat_imx8.h> |
| #include <sci/sci.h> |
| #include <xlat_tables.h> |
| #include <lpuart.h> |
| #include <sec_rsrc.h> |
| #include <imx8-pins.h> |
| #include <iomux.h> |
| |
| /* linker defined symbols */ |
| #if USE_COHERENT_MEM |
| #define BL31_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) |
| #define BL31_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) |
| #endif |
| |
| sc_ipc_t ipc_handle; |
| |
| #define BL31_RO_BASE (unsigned long)(&__RO_START__) |
| #define BL31_RO_LIMIT (unsigned long)(&__RO_END__) |
| #define BL31_END (unsigned long)(&__BL31_END__) |
| |
| 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; |
| } |
| |
| #if DEBUG_CONSOLE_A35 |
| /* |
| * Note: |
| * This piece code is from uboot, take care of license issue. |
| */ |
| static void lpuart32_serial_setbrg(unsigned int base, int baudrate) |
| { |
| unsigned int sbr, osr, baud_diff, tmp_osr, tmp_sbr, tmp_diff, tmp; |
| unsigned int clk; |
| sc_pm_clock_rate_t rate; |
| |
| sc_pm_get_clock_rate(ipc_handle, SC_R_UART_0, 2, &rate); |
| |
| clk = (unsigned int)rate; |
| |
| baud_diff = baudrate; |
| osr = 0; |
| sbr = 0; |
| for (tmp_osr = 4; tmp_osr <= 32; tmp_osr++) |
| { |
| tmp_sbr = (clk / (baudrate * tmp_osr)); |
| if (tmp_sbr == 0) |
| tmp_sbr = 1; |
| |
| /*calculate difference in actual buad w/ current values */ |
| tmp_diff = ( clk / (tmp_osr * tmp_sbr)); |
| tmp_diff = tmp_diff - baudrate; |
| |
| /* select best values between sbr and sbr+1 */ |
| if (tmp_diff > (baudrate - (clk / (tmp_osr * (tmp_sbr + 1))))) { |
| tmp_diff = baudrate - (clk / (tmp_osr * (tmp_sbr + 1))); |
| tmp_sbr++; |
| } |
| |
| if (tmp_diff <= baud_diff) { |
| baud_diff = tmp_diff; |
| osr = tmp_osr; |
| sbr = tmp_sbr; |
| } |
| } |
| |
| /*TODO handle buadrate outside acceptable rate |
| * if (baudDiff > ((config->baudRate_Bps / 100) * 3)) |
| * { |
| * Unacceptable baud rate difference of more than 3% |
| * return kStatus_LPUART_BaudrateNotSupport; |
| * } |
| */ |
| tmp = mmio_read_32(IMX_BOOT_UART_BASE + BAUD); |
| |
| if ((osr >3) && (osr < 8)) |
| tmp |= LPUART_BAUD_BOTHEDGE_MASK; |
| |
| tmp &= ~LPUART_BAUD_OSR_MASK; |
| tmp |= LPUART_BAUD_OSR(osr-1); |
| tmp &= ~LPUART_BAUD_SBR_MASK; |
| tmp |= LPUART_BAUD_SBR(sbr); |
| |
| /* explicitly disable 10 bit mode & set 1 stop bit */ |
| tmp &= ~(LPUART_BAUD_M10_MASK | LPUART_BAUD_SBNS_MASK); |
| |
| mmio_write_32(IMX_BOOT_UART_BASE + BAUD, tmp); |
| } |
| |
| static int lpuart32_serial_init(unsigned int base) |
| { |
| unsigned int tmp; |
| |
| /*disable TX & RX before enabling clocks */ |
| tmp = mmio_read_32(IMX_BOOT_UART_BASE + CTRL); |
| tmp &= ~(CTRL_TE | CTRL_RE); |
| mmio_write_32(IMX_BOOT_UART_BASE + CTRL, tmp); |
| |
| mmio_write_32(IMX_BOOT_UART_BASE + MODIR, 0); |
| mmio_write_32(IMX_BOOT_UART_BASE + FIFO, ~(FIFO_TXFE | FIFO_RXFE)); |
| |
| mmio_write_32(IMX_BOOT_UART_BASE + MATCH, 0); |
| |
| /* |
| * provide data bits, parity, stop bit, etc |
| */ |
| lpuart32_serial_setbrg(base, IMX_BOOT_UART_BAUDRATE); |
| |
| /* eight data bits no parity bit */ |
| tmp = mmio_read_32(IMX_BOOT_UART_BASE + CTRL); |
| tmp &= ~(LPUART_CTRL_PE_MASK | LPUART_CTRL_PT_MASK | LPUART_CTRL_M_MASK); |
| mmio_write_32(IMX_BOOT_UART_BASE + CTRL, tmp); |
| |
| mmio_write_32(IMX_BOOT_UART_BASE + CTRL , CTRL_RE | CTRL_TE); |
| |
| mmio_write_32(IMX_BOOT_UART_BASE + DATA, 0x55); |
| mmio_write_32(IMX_BOOT_UART_BASE + DATA, 0x55); |
| mmio_write_32(IMX_BOOT_UART_BASE + DATA, 0x0A); |
| |
| return 0; |
| } |
| #endif |
| |
| void imx8_partition_resources(void) |
| { |
| sc_err_t err; |
| sc_rm_pt_t secure_part, os_part; |
| sc_rm_mr_t mr, mr_record = 64; |
| bool owned; |
| sc_faddr_t start, end; |
| int i; |
| |
| err = sc_rm_get_partition(ipc_handle, &secure_part); |
| |
| err = sc_rm_partition_alloc(ipc_handle, &os_part, false, false, |
| false, false, false); |
| |
| err = sc_rm_set_parent(ipc_handle, os_part, secure_part); |
| |
| /* set secure resources to NOT-movable */ |
| for (i = 0; i < (sizeof(secure_rsrcs) / sizeof(sc_rsrc_t)); i++) { |
| err = sc_rm_set_resource_movable(ipc_handle, |
| secure_rsrcs[i], secure_rsrcs[i], false); |
| } |
| |
| /* |
| * sc_rm_set_peripheral_permissions |
| * |
| * sc_rm_set_memreg_permissions |
| * |
| * sc_rm_set_pin_movable |
| * |
| */ |
| |
| for (mr = 0; mr < 64; mr++) { |
| owned = sc_rm_is_memreg_owned(ipc_handle, mr); |
| if (owned) { |
| err = sc_rm_get_memreg_info(ipc_handle, mr, &start, &end); |
| if (err) { |
| ERROR("Memreg get info failed, %u\n", mr); |
| } else { |
| NOTICE("Memreg %u 0x%lx -- 0x%lx\n", mr, start, end); |
| |
| if (BL31_BASE >= start && (BL31_LIMIT - 1) <= end) { |
| mr_record = mr; /* Record the mr for ATF running */ |
| } else { |
| err = sc_rm_assign_memreg(ipc_handle, os_part, mr); |
| if (err) |
| ERROR("Memreg assign failed, 0x%lx -- 0x%lx, err %d\n", start, end, err); |
| } |
| } |
| } |
| } |
| |
| if (mr_record != 64) { |
| err = sc_rm_get_memreg_info(ipc_handle, mr_record, &start, &end); |
| if (err) { |
| ERROR("Memreg get info failed, %u\n", mr_record); |
| } else { |
| if ((BL31_LIMIT - 1) < end) { |
| err = sc_rm_memreg_alloc(ipc_handle, &mr, BL31_LIMIT, end); |
| if (err) { |
| ERROR("sc_rm_memreg_alloc failed, 0x%lx -- 0x%lx\n", (sc_faddr_t)BL31_LIMIT, end); |
| } else { |
| err = sc_rm_assign_memreg(ipc_handle, os_part, mr); |
| if (err) |
| ERROR("Memreg assign failed, 0x%lx -- 0x%lx\n", (sc_faddr_t)BL31_LIMIT, end); |
| } |
| } |
| |
| if (start < (BL31_BASE - 1)) { |
| err = sc_rm_memreg_alloc(ipc_handle, &mr, start, BL31_BASE - 1); |
| if (err) { |
| ERROR("sc_rm_memreg_alloc failed, 0x%lx -- 0x%lx\n", start, (sc_faddr_t)BL31_BASE - 1); |
| } else { |
| err = sc_rm_assign_memreg(ipc_handle, os_part, mr); |
| if (err) |
| ERROR("Memreg assign failed, 0x%lx -- 0x%lx\n", start, (sc_faddr_t)BL31_BASE - 1); |
| } |
| } |
| } |
| } |
| |
| owned = sc_rm_is_resource_owned(ipc_handle, SC_R_M4_0_PID0); |
| if (owned) |
| err = sc_rm_set_resource_movable(ipc_handle, SC_R_M4_0_PID0, |
| SC_R_M4_0_PID0, false); |
| /* move all movable resources and pins to non-secure partition */ |
| err = sc_rm_move_all(ipc_handle, secure_part, os_part, true, true); |
| if (owned) { |
| err = sc_rm_set_resource_movable(ipc_handle, SC_R_M4_0_PID0, |
| SC_R_M4_0_PID0, true); |
| err = sc_rm_assign_resource(ipc_handle, os_part, SC_R_M4_0_PID0); |
| } |
| |
| /* iterate through peripherals to give NS OS part access */ |
| for (i = 0; i< (sizeof(ns_access_allowed) / sizeof(sc_rsrc_t)); i++) { |
| err = sc_rm_set_peripheral_permissions(ipc_handle, |
| ns_access_allowed[i], os_part, SC_RM_PERM_FULL); |
| } |
| |
| if (err) |
| NOTICE("Partitioning Failed\n"); |
| else |
| NOTICE("Non-secure Partitioning Succeeded\n"); |
| } |
| |
| void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, |
| u_register_t arg2, u_register_t arg3) |
| { |
| #if DEBUG_CONSOLE |
| static console_lpuart_t console; |
| #endif |
| |
| /* open the IPC channel */ |
| if (sc_ipc_open(&ipc_handle, SC_IPC_CH) != SC_ERR_NONE) { |
| /* No console available now */ |
| while (1); |
| } |
| #if DEBUG_CONSOLE_A35 |
| /* Power up UART0 */ |
| sc_pm_set_resource_power_mode(ipc_handle, SC_R_UART_0, SC_PM_PW_MODE_ON); |
| |
| /* Set UART0 clock root to 80 MHz */ |
| sc_pm_clock_rate_t rate = 80000000; |
| sc_pm_set_clock_rate(ipc_handle, SC_R_UART_0, 2, &rate); |
| |
| /* Enable UART0 clock root */ |
| sc_pm_clock_enable(ipc_handle, SC_R_UART_0, 2, true, false); |
| |
| #define UART_PAD_CTRL (PADRING_IFMUX_EN_MASK | PADRING_GP_EN_MASK | \ |
| (SC_PAD_CONFIG_OUT_IN << PADRING_CONFIG_SHIFT) | \ |
| (SC_PAD_ISO_OFF << PADRING_LPCONFIG_SHIFT) | \ |
| (SC_PAD_28FDSOI_DSE_DV_LOW << PADRING_DSE_SHIFT) | \ |
| (SC_PAD_28FDSOI_PS_PD << PADRING_PULL_SHIFT)) |
| /* Configure UART pads */ |
| sc_pad_set(ipc_handle, SC_P_UART0_RX, UART_PAD_CTRL); |
| |
| sc_pad_set(ipc_handle, SC_P_UART0_TX, UART_PAD_CTRL); |
| |
| lpuart32_serial_init(IMX_BOOT_UART_BASE); |
| #endif |
| |
| #if DEBUG_CONSOLE |
| console_lpuart_register(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ, |
| IMX_CONSOLE_BAUDRATE, &console); |
| #endif |
| |
| /* Turn on MU1 for non-secure OS/Hypervisor |
| * |
| */ |
| sc_pm_set_resource_power_mode(ipc_handle, SC_R_MU_1A, SC_PM_PW_MODE_ON); |
| |
| /* create new partition for non-secure OS/Hypervisor |
| * |
| * uses global structs defined in sec_rsrc.h |
| */ |
| imx8_partition_resources(); |
| |
| /* |
| * 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); |
| } |
| |
| void bl31_plat_arch_setup(void) |
| { |
| /* |
| * add the mmap |
| * Change to 128KB? |
| * Fix Me |
| */ |
| mmap_add_region(BL31_BASE, BL31_BASE, 0x10000, |
| MT_MEMORY | MT_RW); |
| mmap_add_region(BL31_BASE, BL31_BASE, BL31_RO_LIMIT - BL31_RO_BASE, |
| MT_MEMORY | MT_RO); |
| mmap_add_region(IMX_BOOT_UART_BASE, IMX_BOOT_UART_BASE, |
| 0x1000, MT_DEVICE | MT_RW); |
| mmap_add_region(SC_IPC_CH, SC_IPC_CH, 0x10000, |
| MT_DEVICE | MT_RW); |
| mmap_add_region(PLAT_GICD_BASE, PLAT_GICD_BASE, 0x10000, |
| MT_DEVICE | MT_RW); |
| mmap_add_region(PLAT_GICR_BASE, PLAT_GICR_BASE, 0xc0000, |
| MT_DEVICE | MT_RW); |
| // mmap_add_region(IMX_GPT0_BASE, IMX_GPT0_BASE, 0x10000, |
| // MT_DEVICE | MT_RW); |
| mmap_add_region(IMX_WUP_IRQSTR, IMX_WUP_IRQSTR, 0x10000, |
| MT_DEVICE | MT_RW); |
| |
| #if USE_COHERENT_MEM |
| mmap_add_region(BL31_COHERENT_RAM_BASE, BL31_COHERENT_RAM_BASE, |
| BL31_COHERENT_RAM_LIMIT - BL31_COHERENT_RAM_BASE, |
| MT_DEVICE | MT_RW); |
| #endif |
| |
| /* setup xlat table */ |
| init_xlat_tables(); |
| |
| /* enable the MMU */ |
| enable_mmu_el3(0); |
| } |
| |
| void bl31_platform_setup(void) |
| { |
| /* init the GICv3 cpu and distributor interface */ |
| plat_gic_driver_init(); |
| plat_gic_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 long long plat_get_syscnt_freq(void) |
| { |
| return COUNTER_FREQUENCY; |
| } |
| |
| unsigned int plat_get_syscnt_freq2(void) |
| { |
| return COUNTER_FREQUENCY; |
| } |
| |
| void bl31_plat_runtime_setup(void) |
| { |
| return; |
| } |