182 lines
5.0 KiB
C
182 lines
5.0 KiB
C
/***************************************************************************//**
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* \file main.c
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* \version 1.0
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********************************************************************************
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* \copyright
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*******************************************************************************/
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/* Cypress pdl headers */
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#include "cy_pdl.h"
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#include "cy_retarget_io_pdl.h"
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#include "cy_result.h"
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#include "cycfg_clocks.h"
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#include "cycfg_peripherals.h"
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#include "cycfg_pins.h"
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#include "flash_qspi.h"
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#include "sysflash/sysflash.h"
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#include "flash_map_backend/flash_map_backend.h"
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#include "bootutil/image.h"
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#include "bootutil/bootutil.h"
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#include "bootutil/sign_key.h"
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#include "bootutil/bootutil_log.h"
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#include "bootutil/fault_injection_hardening.h"
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#include "watchdog.h"
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/* WDT time out for reset mode, in milliseconds. */
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#define WDT_TIME_OUT_MS 4000
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/* Define pins for UART debug output */
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#define CYBSP_UART_ENABLED 1U
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#define CYBSP_UART_HW SCB5
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#define CYBSP_UART_IRQ scb_5_interrupt_IRQn
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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/* Choose SMIF slot number (slave select).
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* Acceptable values are:
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* 0 - SMIF disabled (no external memory);
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* 1, 2, 3 or 4 - slave select line memory module is connected to.
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*/
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uint32_t smif_id = 1; /* Assume SlaveSelect_0 is used for External Memory */
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#endif
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void hw_deinit(void);
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static void do_boot(struct boot_rsp *rsp)
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{
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uint32_t app_addr = 0;
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app_addr = (rsp->br_image_off + rsp->br_hdr->ih_hdr_size);
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BOOT_LOG_INF("Starting User Application on CM4 (wait)...");
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BOOT_LOG_INF("Start Address: 0x%08lx", app_addr);
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BOOT_LOG_INF("Deinitializing hardware...");
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cy_retarget_io_wait_tx_complete(CYBSP_UART_HW, 10);
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hw_deinit();
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Cy_SysEnableCM4(app_addr);
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}
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int main(void)
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{
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struct boot_rsp rsp;
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cy_rslt_t rc = CY_RSLT_TYPE_ERROR;
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bool boot_succeeded = false;
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fih_int fih_rc = FIH_FAILURE;
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SystemInit();
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//init_cycfg_clocks();
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init_cycfg_peripherals();
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init_cycfg_pins();
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/* Certain PSoC 6 devices enable CM4 by default at startup. It must be
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* either disabled or enabled & running a valid application for flash write
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* to work from CM0+. Since flash write may happen in boot_go() for updating
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* the image before this bootloader app can enable CM4 in do_boot(), we need
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* to keep CM4 disabled. Note that debugging of CM4 is not supported when it
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* is disabled.
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*/
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#if defined(CY_DEVICE_PSOC6ABLE2)
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if (CY_SYS_CM4_STATUS_ENABLED == Cy_SysGetCM4Status())
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{
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Cy_SysDisableCM4();
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}
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#endif /* #if defined(CY_DEVICE_PSOC6ABLE2) */
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/* enable interrupts */
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__enable_irq();
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/* Initialize retarget-io to use the debug UART port (CYBSP_UART_HW) */
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rc = cy_retarget_io_pdl_init(115200u);
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if (rc != CY_RSLT_SUCCESS)
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{
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CY_ASSERT(0);
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}
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BOOT_LOG_INF("MCUBoot Bootloader Started");
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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rc = CY_SMIF_CMD_NOT_FOUND;
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#undef MCUBOOT_MAX_IMG_SECTORS
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/* redefine number of sectors as there 2MB will be
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* available on PSoC062-2M in case of external
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* memory usage */
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#define MCUBOOT_MAX_IMG_SECTORS 4096
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rc = qspi_init_sfdp(smif_id);
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if (rc == CY_SMIF_SUCCESS)
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{
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BOOT_LOG_INF("External Memory initialized w/ SFDP.");
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}
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else
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{
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BOOT_LOG_ERR("External Memory initialization w/ SFDP FAILED: 0x%02x", (int)rc);
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}
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if (CY_SMIF_SUCCESS == rc)
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#endif
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{
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FIH_CALL(boot_go, fih_rc, &rsp);
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if (fih_eq(fih_rc, FIH_SUCCESS))
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{
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BOOT_LOG_INF("User Application validated successfully");
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/* initialize watchdog timer. it should be updated from user app
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* to mark successful start up of this app. if the watchdog is not updated,
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* reset will be initiated by watchdog timer and swap revert operation started
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* to roll back to operable image.
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*/
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cy_wdg_init(WDT_TIME_OUT_MS);
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do_boot(&rsp);
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boot_succeeded = true;
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}
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else
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{
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BOOT_LOG_INF("MCUBoot Bootloader found none of bootable images");
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}
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}
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while (1)
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{
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if (boot_succeeded) {
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Cy_SysPm_CpuEnterDeepSleep(CY_SYSPM_WAIT_FOR_INTERRUPT);
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}
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else {
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__WFI();
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}
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}
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return 0;
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}
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void hw_deinit(void)
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{
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cy_retarget_io_pdl_deinit();
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Cy_GPIO_Port_Deinit(CYBSP_UART_RX_PORT);
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Cy_GPIO_Port_Deinit(CYBSP_UART_TX_PORT);
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#ifdef CY_BOOT_USE_EXTERNAL_FLASH
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qspi_deinit(smif_id);
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#endif
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}
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