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https://github.com/ARM-software/arm-trusted-firmware.git
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7e87ba2598
Some parameters from BootROM boot context can be required after boot. To save space in SYSRAM, this context can be overwritten during images load sequence. The needed information (here the boot interface) is then saved in a local variable. Change-Id: I5e1ad4630ccf78480f415a0a83939005ae67729e Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
157 lines
3.4 KiB
C
157 lines
3.4 KiB
C
/*
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* Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <errno.h>
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#include <platform_def.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <drivers/st/stm32mp_clkfunc.h>
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#include <lib/smccc.h>
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#include <lib/xlat_tables/xlat_tables_v2.h>
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#include <plat/common/platform.h>
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#include <services/arm_arch_svc.h>
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uintptr_t plat_get_ns_image_entrypoint(void)
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{
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return BL33_BASE;
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}
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unsigned int plat_get_syscnt_freq2(void)
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{
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return read_cntfrq_el0();
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}
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static uintptr_t boot_ctx_address;
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static uint16_t boot_itf_selected;
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void stm32mp_save_boot_ctx_address(uintptr_t address)
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{
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boot_api_context_t *boot_context = (boot_api_context_t *)address;
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boot_ctx_address = address;
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boot_itf_selected = boot_context->boot_interface_selected;
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}
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uintptr_t stm32mp_get_boot_ctx_address(void)
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{
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return boot_ctx_address;
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}
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uint16_t stm32mp_get_boot_itf_selected(void)
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{
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return boot_itf_selected;
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}
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uintptr_t stm32mp_ddrctrl_base(void)
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{
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return DDRCTRL_BASE;
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}
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uintptr_t stm32mp_ddrphyc_base(void)
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{
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return DDRPHYC_BASE;
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}
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uintptr_t stm32mp_pwr_base(void)
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{
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return PWR_BASE;
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}
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uintptr_t stm32mp_rcc_base(void)
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{
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return RCC_BASE;
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}
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bool stm32mp_lock_available(void)
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{
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const uint32_t c_m_bits = SCTLR_M_BIT | SCTLR_C_BIT;
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/* The spinlocks are used only when MMU and data cache are enabled */
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return (read_sctlr() & c_m_bits) == c_m_bits;
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}
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int stm32mp_check_header(boot_api_image_header_t *header, uintptr_t buffer)
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{
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uint32_t i;
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uint32_t img_checksum = 0U;
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/*
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* Check header/payload validity:
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* - Header magic
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* - Header version
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* - Payload checksum
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*/
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if (header->magic != BOOT_API_IMAGE_HEADER_MAGIC_NB) {
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ERROR("Header magic\n");
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return -EINVAL;
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}
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if (header->header_version != BOOT_API_HEADER_VERSION) {
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ERROR("Header version\n");
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return -EINVAL;
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}
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for (i = 0U; i < header->image_length; i++) {
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img_checksum += *(uint8_t *)(buffer + i);
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}
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if (header->payload_checksum != img_checksum) {
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ERROR("Checksum: 0x%x (awaited: 0x%x)\n", img_checksum,
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header->payload_checksum);
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return -EINVAL;
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}
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return 0;
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}
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int stm32mp_map_ddr_non_cacheable(void)
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{
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return mmap_add_dynamic_region(STM32MP_DDR_BASE, STM32MP_DDR_BASE,
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STM32MP_DDR_MAX_SIZE,
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MT_NON_CACHEABLE | MT_RW | MT_SECURE);
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}
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int stm32mp_unmap_ddr(void)
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{
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return mmap_remove_dynamic_region(STM32MP_DDR_BASE,
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STM32MP_DDR_MAX_SIZE);
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}
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/*****************************************************************************
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* plat_is_smccc_feature_available() - This function checks whether SMCCC
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* feature is availabile for platform.
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* @fid: SMCCC function id
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*
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* Return SMC_ARCH_CALL_SUCCESS if SMCCC feature is available and
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* SMC_ARCH_CALL_NOT_SUPPORTED otherwise.
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*****************************************************************************/
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int32_t plat_is_smccc_feature_available(u_register_t fid)
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{
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switch (fid) {
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case SMCCC_ARCH_SOC_ID:
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return SMC_ARCH_CALL_SUCCESS;
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default:
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return SMC_ARCH_CALL_NOT_SUPPORTED;
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}
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}
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/* Get SOC version */
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int32_t plat_get_soc_version(void)
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{
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uint32_t chip_id = stm32mp_get_chip_dev_id();
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uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_ST_BKID, JEDEC_ST_MFID);
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return (int32_t)(manfid | (chip_id & SOC_ID_IMPL_DEF_MASK));
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}
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/* Get SOC revision */
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int32_t plat_get_soc_revision(void)
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{
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return (int32_t)(stm32mp_get_chip_version() & SOC_ID_REV_MASK);
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}
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