114 lines
3.7 KiB
C
114 lines
3.7 KiB
C
/* To be built with arm-none-eabi-gcc -c -mthumb -mcpu=cortex-m0 -O3 bluenrgx.c */
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/* Then postprocess output of command "arm-none-eabi-objdump -d bluenrgx.o" to make a C array of bytes */
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#include <stdint.h>
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#include "../../../../src/flash/nor/bluenrg-x.h"
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/* Status Values ----------------------------------------------------------*/
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#define SUCCESS 0
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#define ERR_UNALIGNED 1
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#define ERR_INVALID_ADDRESS 2
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#define ERR_INVALID_TYPE 3
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#define ERR_WRITE_PROTECTED 4
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#define ERR_WRITE_FAILED 5
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#define ERR_ERASE_REQUIRED 6
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#define ERR_VERIFY_FAILED 7
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#define MFB_MASS_ERASE 0x01
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#define MFB_PAGE_ERASE 0x02
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#define DO_ERASE 0x0100
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#define DO_VERIFY 0x0200
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#define MFB_BOTTOM (0x10040000)
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#define MFB_SIZE_B(regs_base) ((16 * (((*(volatile uint32_t *)(regs_base + FLASH_SIZE_REG)) + 1) >> 12)) * 1024)
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#define MFB_SIZE_W (MFB_SIZE_B/4)
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#define MFB_TOP (MFB_BOTTOM+MFB_SIZE_B-1)
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#define MFB_PAGE_SIZE_B (2048)
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#define MFB_PAGE_SIZE_W (MFB_PAGE_SIZE_B/4)
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#define AREA_ERROR 0x01
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#define AREA_MFB 0x04
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typedef struct {
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volatile uint8_t *wp;
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uint8_t *rp;
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} work_area_t;
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/* Flash Commands --------------------------------------------------------*/
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static inline __attribute__((always_inline)) uint32_t flashWrite(uint32_t address, uint8_t **data,
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uint32_t writeLength, uint32_t flash_regs_base)
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{
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uint32_t index, flash_word[4];
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uint8_t i;
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_IRQMASK)) = 0;
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for (index = 0; index < writeLength; index += (FLASH_WORD_LEN*4)) {
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for (i = 0; i < 4; i++)
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flash_word[i] = (*(uint32_t *) (*data + i*4));
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/* Clear the IRQ flags */
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_IRQRAW)) = 0x0000003F;
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/* Load the flash address to write */
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_ADDRESS)) = (uint16_t)((address + index - MFB_BOTTOM) >> 2);
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/* Prepare and load the data to flash */
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_DATA0)) = flash_word[0];
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_DATA1)) = flash_word[1];
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_DATA2)) = flash_word[2];
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_DATA3)) = flash_word[3];
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/* Flash write command */
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*((volatile uint32_t *)(flash_regs_base + FLASH_REG_COMMAND)) = FLASH_CMD_BURSTWRITE;
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/* Wait the end of the flash write command */
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while ((*((volatile uint32_t *)(flash_regs_base + FLASH_REG_IRQRAW)) & FLASH_INT_CMDDONE) == 0)
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;
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*data += (FLASH_WORD_LEN * 4);
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}
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return SUCCESS;
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}
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__attribute__((naked)) __attribute__((noreturn)) void write(uint8_t *work_area_p,
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uint8_t *fifo_end,
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uint8_t *target_address,
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uint32_t count,
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uint32_t flash_regs_base)
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{
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uint32_t retval;
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volatile work_area_t *work_area = (work_area_t *) work_area_p;
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uint8_t *fifo_start = (uint8_t *) work_area->rp;
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while (count) {
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volatile int32_t fifo_linear_size;
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/* Wait for some data in the FIFO */
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while (work_area->rp == work_area->wp)
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;
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if (work_area->wp == 0) {
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/* Aborted by other party */
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break;
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}
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if (work_area->rp > work_area->wp) {
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fifo_linear_size = fifo_end-work_area->rp;
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} else {
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fifo_linear_size = (work_area->wp - work_area->rp);
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if (fifo_linear_size < 0)
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fifo_linear_size = 0;
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}
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if (fifo_linear_size < 16) {
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/* We should never get here */
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continue;
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}
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retval = flashWrite((uint32_t) target_address, (uint8_t **) &work_area->rp, fifo_linear_size, flash_regs_base);
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if (retval != SUCCESS) {
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work_area->rp = (uint8_t *)retval;
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break;
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}
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target_address += fifo_linear_size;
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if (work_area->rp >= fifo_end)
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work_area->rp = fifo_start;
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count -= fifo_linear_size;
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}
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__asm("bkpt 0");
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}
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