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Diffstat (limited to 'projects/cli-test/mgmt-dfu.c')
| -rw-r--r-- | projects/cli-test/mgmt-dfu.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/projects/cli-test/mgmt-dfu.c b/projects/cli-test/mgmt-dfu.c new file mode 100644 index 0000000..1f8aa0a --- /dev/null +++ b/projects/cli-test/mgmt-dfu.c @@ -0,0 +1,187 @@ +/* + * mgmt-dfu.c + * --------- + * Management CLI Device Firmware Upgrade code. + * + * Copyright (c) 2016, NORDUnet A/S All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * - Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * - Neither the name of the NORDUnet nor the names of its contributors may + * be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A + * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "stm-init.h" +#include "mgmt-cli.h" +#include "stm-uart.h" +#include "cmsis_nvic.h" + +#include <string.h> + + +#define DFU_BASE_ADDRESS 0x08100000 +#define DFU_BASE_PTR (__IO uint32_t *) DFU_BASE_ADDRESS + + +extern uint32_t update_crc(uint32_t crc, uint8_t *buf, int len); + + +/* The chunk size have to be a multiple of the SPI flash page size (256 bytes), + and it has to match the chunk size in the program sending the bitstream over the UART. +*/ +#define DFU_UPLOAD_CHUNK_SIZE 256 + +int cmd_dfu_upload(struct cli_def *cli, const char *command, char *argv[], int argc) +{ + uint32_t filesize = 0, crc = 0, my_crc = 0, counter = 0, i, j; + uint32_t offset = 0, n = DFU_UPLOAD_CHUNK_SIZE; + uint32_t buf[DFU_UPLOAD_CHUNK_SIZE / 4]; + FLASH_EraseInitTypeDef FLASH_EraseInitStruct; + uint32_t SectorError = 0; + + cli_print(cli, "OK, write DFU application file size (4 bytes), data in %i byte chunks, CRC-32 (4 bytes)", + DFU_UPLOAD_CHUNK_SIZE); + + /* Read file size (4 bytes) */ + uart_receive_bytes(STM_UART_MGMT, (void *) &filesize, 4, 1000); + cli_print(cli, "File size %li", filesize); + + HAL_FLASH_Unlock(); + + FLASH_EraseInitStruct.TypeErase = TYPEERASE_SECTORS; + FLASH_EraseInitStruct.Sector = 12; /* the sector for DFU_BASE_ADDRESS (0x08100000) */ + FLASH_EraseInitStruct.NbSectors = 1; + FLASH_EraseInitStruct.VoltageRange = VOLTAGE_RANGE_3; + + if (HAL_FLASHEx_Erase(&FLASH_EraseInitStruct, &SectorError) != HAL_OK) { + cli_print(cli, "Failed erasing flash sector"); + return CLI_ERROR; + } + + while (filesize) { + /* By initializing buf to the same value that erased flash has (0xff), we don't + * have to try and be smart when writing the last page of data to the memory. + */ + memset(buf, 0xffffffff, sizeof(buf)); + + if (filesize < n) { + n = filesize; + } + + if (uart_receive_bytes(STM_UART_MGMT, (void *) &buf, n, 1000) != HAL_OK) { + cli_print(cli, "Receive timed out"); + return CLI_ERROR; + } + filesize -= n; + + /* After reception of a chunk but before ACKing we have "all" the time in the world to + * calculate CRC and write it to flash. + */ + my_crc = update_crc(my_crc, (uint8_t *) buf, n); + + for (i = 0; i < DFU_UPLOAD_CHUNK_SIZE / 4; i++) { + if ((j = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, DFU_BASE_ADDRESS + offset, buf[i])) != HAL_OK) { + cli_print(cli, "Failed writing data at offset %li: %li", offset, j); + return CLI_ERROR; + } + offset += 4; + } + + /* ACK this chunk by sending the current chunk counter (4 bytes) */ + counter++; + uart_send_bytes(STM_UART_MGMT, (void *) &counter, 4); + } + + HAL_FLASH_Lock(); + + /* The sending side will now send it's calculated CRC-32 */ + cli_print(cli, "Send CRC-32"); + uart_receive_bytes(STM_UART_MGMT, (void *) &crc, 4, 1000); + cli_print(cli, "CRC-32 %li", crc); + if (crc == my_crc) { + cli_print(cli, "CRC checksum MATCHED"); + } else { + cli_print(cli, "CRC checksum did NOT match"); + } + + return CLI_OK; +} + +int cmd_dfu_dump(struct cli_def *cli, const char *command, char *argv[], int argc) +{ + cli_print(cli, "First 256 bytes from DFU application address %p:\r\n", DFU_BASE_PTR); + + uart_send_hexdump(STM_UART_MGMT, (uint8_t *) DFU_BASE_PTR, 0, 0xff); + uart_send_string2(STM_UART_MGMT, (char *) "\r\n\r\n"); + + return CLI_OK; +} + +typedef int (*pFunction)(void); + +int cmd_dfu_jump(struct cli_def *cli, const char *command, char *argv[], int argc) +{ + uint32_t new_msp, i; + /* Load first byte from the DFU_BASE_PTR to verify it contains an IVT before + * jumping there. + */ + new_msp = *DFU_BASE_PTR; + i = new_msp & 0xFF000000; + /* 'i' is supposed to be a pointer to the new applications stack, it should + * point either at RAM (0x20000000) or at the CCM memory (0x10000000). + */ + if (i == 0x20000000 || i == 0x10000000) { + uint32_t jmp_to = *(DFU_BASE_PTR + 1); + pFunction loaded_app = (pFunction) jmp_to; + + __disable_irq(); + HAL_NVIC_DisableIRQ(SysTick_IRQn); + + HAL_DeInit(); + + /* Relocate interrupt vector table */ + //NVIC_SetVectorTable(DFU_BASE_ADDRESS); + SCB->VTOR == DFU_BASE_ADDRESS; + NVIC_SetVector(WWDG_IRQn, *DFU_BASE_PTR + 1); + + /* Re-initialize stack pointer */ + __set_MSP(new_msp); + /* Jump to the DFU loaded application */ + loaded_app(); + Error_Handler(); + } else { + cli_print(cli, "No loaded application found at %p", DFU_BASE_PTR); + } + + return CLI_OK; +} + +void configure_cli_dfu(struct cli_def *cli) +{ + cli_command_root(dfu); + + cli_command_node(dfu, dump, "Show the first 256 bytes of the loaded application"); + cli_command_node(dfu, jump, "Jump to the loaded application"); + cli_command_node(dfu, upload, "Load a new application"); +} |