From bfcbe2a78f709417c2f41de32a8d6b61842a0abd Mon Sep 17 00:00:00 2001 From: Fredrik Thulin Date: Thu, 19 May 2016 14:23:13 +0200 Subject: Refactor FPGA bitstream upload code. Move the N25Q128 code to it's own file in order to be able to reuse it for the keystore memory code. --- stm-fpgacfg.c | 267 +++++----------------------------------------------------- 1 file changed, 21 insertions(+), 246 deletions(-) (limited to 'stm-fpgacfg.c') diff --git a/stm-fpgacfg.c b/stm-fpgacfg.c index 0d255e5..f8ff6fa 100644 --- a/stm-fpgacfg.c +++ b/stm-fpgacfg.c @@ -38,259 +38,34 @@ SPI_HandleTypeDef hspi_fpgacfg; -int _n25q128_get_wel_flag(void); +struct spiflash_ctx fpgacfg_ctx = {&hspi_fpgacfg, PROM_CS_N_GPIO_Port, PROM_CS_N_Pin}; - -int n25q128_check_id() +int fpgacfg_check_id() { - // tx, rx buffers - uint8_t spi_tx[4]; - uint8_t spi_rx[4]; - - // result - HAL_StatusTypeDef ok; - - // send READ ID command - spi_tx[0] = N25Q128_COMMAND_READ_ID; - - // select, send command & read response, deselect - _n25q128_select(); - ok = HAL_SPI_TransmitReceive(N25Q128_SPI_HANDLE, spi_tx, spi_rx, 4, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // parse response (note, that the very first byte was received during the - // transfer of the command byte, so it contains garbage and should - // be ignored here) - if (spi_rx[1] != N25Q128_ID_MANUFACTURER) return 0; - if (spi_rx[2] != N25Q128_ID_DEVICE_TYPE) return 0; - if (spi_rx[3] != N25Q128_ID_DEVICE_CAPACITY) return 0; - - // done - return 1; + return n25q128_check_id(&fpgacfg_ctx); } - -int n25q128_read_page(uint32_t page_offset, uint8_t *page_buffer) +int fpgacfg_write_data(uint32_t offset, const uint8_t *buf, const uint32_t len) { - // tx buffer - uint8_t spi_tx[4]; - - // result - HAL_StatusTypeDef ok; - - // check offset - if (page_offset >= N25Q128_NUM_PAGES) return 0; - - // calculate byte address - page_offset *= N25Q128_PAGE_SIZE; - - // prepare READ command - spi_tx[0] = N25Q128_COMMAND_READ_PAGE; - spi_tx[1] = (uint8_t)(page_offset >> 16); - spi_tx[2] = (uint8_t)(page_offset >> 8); - spi_tx[3] = (uint8_t)(page_offset >> 0); - - // activate, send command - _n25q128_select(); - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, spi_tx, 4, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - - // check - if (ok != HAL_OK) { - _n25q128_deselect(); - return 0; - } - - // read response, deselect - ok = HAL_SPI_Receive(N25Q128_SPI_HANDLE, page_buffer, N25Q128_PAGE_SIZE, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // done - return 1; + return n25q128_write_data(&fpgacfg_ctx, offset, buf, len); } - -int n25q128_write_page(uint32_t page_offset, uint8_t *page_buffer) +void fpgacfg_access_control(enum fpgacfg_access_ctrl access) { - // tx buffer - uint8_t spi_tx[4]; - - // result - HAL_StatusTypeDef ok; - - // check offset - if (page_offset >= N25Q128_NUM_PAGES) return 0; - - // enable writing - spi_tx[0] = N25Q128_COMMAND_WRITE_ENABLE; - - // activate, send command, deselect - _n25q128_select(); - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, spi_tx, 1, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // make sure, that write enable did the job - int wel = _n25q128_get_wel_flag(); - if (wel != 1) return 0; - - // calculate byte address - page_offset *= N25Q128_PAGE_SIZE; - - // prepare PROGRAM PAGE command - spi_tx[0] = N25Q128_COMMAND_PAGE_PROGRAM; - spi_tx[1] = (uint8_t)(page_offset >> 16); - spi_tx[2] = (uint8_t)(page_offset >> 8); - spi_tx[3] = (uint8_t)(page_offset >> 0); - - // activate, send command - _n25q128_select(); - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, spi_tx, 4, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - - // check - if (ok != HAL_OK) { - _n25q128_deselect(); - return 0; + if (access == ALLOW_ARM) { + // fpga disable = 1 + HAL_GPIO_WritePin(PROM_FPGA_DIS_GPIO_Port, PROM_FPGA_DIS_Pin, GPIO_PIN_SET); + // arm enable = 0 + HAL_GPIO_WritePin(GPIOF, PROM_ARM_ENA_Pin, GPIO_PIN_RESET); + } else if (access == ALLOW_FPGA) { + // fpga disable = 0 + HAL_GPIO_WritePin(PROM_FPGA_DIS_GPIO_Port, PROM_FPGA_DIS_Pin, GPIO_PIN_RESET); + // arm enable = 1 + HAL_GPIO_WritePin(GPIOF, PROM_ARM_ENA_Pin, GPIO_PIN_SET); + } else { + // fpga disable = 1 + HAL_GPIO_WritePin(PROM_FPGA_DIS_GPIO_Port, PROM_FPGA_DIS_Pin, GPIO_PIN_SET); + // arm enable = 1 + HAL_GPIO_WritePin(GPIOF, PROM_ARM_ENA_Pin, GPIO_PIN_SET); } - - // send data, deselect - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, page_buffer, N25Q128_PAGE_SIZE, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // done - return 1; -} - - -int n25q128_get_wip_flag(void) -{ - // tx, rx buffers - uint8_t spi_tx[2]; - uint8_t spi_rx[2]; - - // result - HAL_StatusTypeDef ok; - - // send READ STATUS command - spi_tx[0] = N25Q128_COMMAND_READ_STATUS; - - // send command, read response, deselect - _n25q128_select(); - ok = HAL_SPI_TransmitReceive(N25Q128_SPI_HANDLE, spi_tx, spi_rx, 2, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return -1; - - // done - return (spi_rx[1] & 1); -} - - -int n25q128_erase_sector(uint32_t sector_offset) -{ - // tx buffer - uint8_t spi_tx[4]; - - // result - HAL_StatusTypeDef ok; - - // check offset - if (sector_offset >= N25Q128_NUM_SECTORS) return 0; - - // enable writing - spi_tx[0] = N25Q128_COMMAND_WRITE_ENABLE; - - // select, send command, deselect - _n25q128_select(); - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, spi_tx, 1, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // make sure, that write enable did the job - int wel = _n25q128_get_wel_flag(); - if (wel != 1) return 0; - - // calculate byte address - sector_offset *= N25Q128_SECTOR_SIZE; - - // send ERASE SUBSECTOR command - spi_tx[0] = N25Q128_COMMAND_ERASE_SECTOR; - spi_tx[1] = (uint8_t)(sector_offset >> 16); - spi_tx[2] = (uint8_t)(sector_offset >> 8); - spi_tx[3] = (uint8_t)(sector_offset >> 0); - - // activate, send command, deselect - _n25q128_select(); - ok = HAL_SPI_Transmit(N25Q128_SPI_HANDLE, spi_tx, 4, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return 0; - - // done - return 1; -} - - -int _n25q128_get_wel_flag(void) -{ - // tx, rx buffers - uint8_t spi_tx[2]; - uint8_t spi_rx[2]; - - // result - HAL_StatusTypeDef ok; - - // send READ STATUS command - spi_tx[0] = N25Q128_COMMAND_READ_STATUS; - - // send command, read response, deselect - _n25q128_select(); - ok = HAL_SPI_TransmitReceive(N25Q128_SPI_HANDLE, spi_tx, spi_rx, 2, N25Q128_SPI_TIMEOUT); - HAL_Delay(1); - _n25q128_deselect(); - - // check - if (ok != HAL_OK) return -1; - - // done - return ((spi_rx[1] >> 1) & 1); -} - -void fpgacfg_give_access_to_stm32() -{ - // fpga disable = 1 - HAL_GPIO_WritePin(GPIOI, GPIO_PIN_14, GPIO_PIN_SET); - // arm enable = 0 - HAL_GPIO_WritePin(GPIOF, GPIO_PIN_6, GPIO_PIN_RESET); -} - -void fpgacfg_give_access_to_fpga() -{ - // fpga disable = 0 - HAL_GPIO_WritePin(GPIOI, GPIO_PIN_14, GPIO_PIN_RESET); - // arm enable = 1 - HAL_GPIO_WritePin(GPIOF, GPIO_PIN_6, GPIO_PIN_SET); } -- cgit v1.2.3