blob: 70c2def7d18bf0bdb783ce9e42edc4109dd79211 [file] [log] [blame]
/*
* 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 <dram.h>
#include <gpc.h>
#include <imx_aipstz.h>
#include <imx_uart.h>
#include <imx8m_caam.h>
#include <imx8m_ccm.h>
#include <plat_imx8.h>
#define TRUSTY_PARAMS_LEN_BYTES (4096*2)
/*
* Avoid the pointer dereference of the canonical mmio_read_8() implementation.
* This prevents the compiler from mis-interpreting the MMIO access as an
* illegal memory access to a very low address (the IMX ROM is mapped at 0).
*/
static uint8_t mmio_read_8_ldrb(uintptr_t address)
{
uint8_t reg;
__asm__ volatile ("ldrb %w0, [%1]" : "=r" (reg) : "r" (address));
return reg;
}
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 */
MAP_REGION_FLAT(IMX_DDRPHY_BASE, IMX_DDR_IPS_SIZE, MT_DEVICE | MT_RW), /* DDRMIX map */
MAP_REGION_FLAT(IMX_DRAM_BASE, IMX_DRAM_SIZE, MT_MEMORY | MT_RW | MT_NS),
{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_ldrb(IMX_ROM_BASE + ROM_SOC_INFO_A0);
if (rom_version == 0x10)
return;
rom_version = mmio_read_8_ldrb(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)
{
unsigned int console_base = IMX_BOOT_UART_BASE;
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);
if (console_base == 0U) {
console_base = imx8m_uart_get_base();
}
console_imx_uart_register(console_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();
dram_info_init(SAVED_DRAM_TIMING_BASE);
}
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