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dc31-addon-addon-badge-firm.../bootloader_hk32f030m_uart_x.../code/inc/flash.h

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Initial bootloader implementation Took a publicly available XMODEM bootloader and made it work on HK32F. Known issues: - Erase is super slow on this MCU. The upload routine erases all flash before loading, which means the first packet seems to hang. This also erases possibly persistent data stored in unused pages on flash.
2023-06-25 01:41:36 -07:00
/*
* flash.h
*
* Created on: Jun 23, 2023
* Author: true
*/
#ifndef CODE_INC_FLASH_H_
#define CODE_INC_FLASH_H_
#include "hk32f030m.h"
#define FLASH_SIZE 16384 // size of overall flash available on MCU
#define FLASH_ERASE_PAGE_SIZE ((uint16_t)0x80) // erase page size
bootloader: flash page erase is on-demand, now fits in 2K Flash pages are only erased as needed during the flash routine, which makes flashing faster as well as making the transfer consistent. Later datasheets have the flash clock set to 2MHz. I've set it to 2MHz here. I may undo this change later depending on how slow loading a 14K firmware feels. Was able to save enough space to reduce bootloader size from almost 2.5K to 2K exactly. Adjusted flash offsets to start from 0x800. GPIO values are now mostly reset to power-on defaults. Fixed some formatting. Removed dead code.
2023-06-25 05:01:16 -07:00
#define FLASH_ERASE_PAGE_MASK 0x7f // bitmask of page size
Initial bootloader implementation Took a publicly available XMODEM bootloader and made it work on HK32F. Known issues: - Erase is super slow on this MCU. The upload routine erases all flash before loading, which means the first packet seems to hang. This also erases possibly persistent data stored in unused pages on flash.
2023-06-25 01:41:36 -07:00
bootloader: flash page erase is on-demand, now fits in 2K Flash pages are only erased as needed during the flash routine, which makes flashing faster as well as making the transfer consistent. Later datasheets have the flash clock set to 2MHz. I've set it to 2MHz here. I may undo this change later depending on how slow loading a 14K firmware feels. Was able to save enough space to reduce bootloader size from almost 2.5K to 2K exactly. Adjusted flash offsets to start from 0x800. GPIO values are now mostly reset to power-on defaults. Fixed some formatting. Removed dead code.
2023-06-25 05:01:16 -07:00
#define USER_APP_START_ADDR ((uint32_t)FLASH_BASE + 0x800) // 2048 bytes (16 pages) rsvd for bootloader
Initial bootloader implementation Took a publicly available XMODEM bootloader and made it work on HK32F. Known issues: - Erase is super slow on this MCU. The upload routine erases all flash before loading, which means the first packet seems to hang. This also erases possibly persistent data stored in unused pages on flash.
2023-06-25 01:41:36 -07:00
#define USER_APP_END_ADDR ((uint32_t)FLASH_BASE + FLASH_SIZE)
/* Status report for the functions. */
typedef enum {
FLASH_OK = 0x00u, /**< The action was successful. */
FLASH_ERROR_SIZE = 0x01u, /**< The binary is too big. */
FLASH_ERROR_WRITE = 0x02u, /**< Writing failed. */
FLASH_ERROR_VERIFY = 0x04u, /**< Writing was successful, but the content of the memory is wrong. */
FLASH_ERROR = 0xFFu /**< Generic error. */
} BL_flash_status;
bootloader: flash page erase is on-demand, now fits in 2K Flash pages are only erased as needed during the flash routine, which makes flashing faster as well as making the transfer consistent. Later datasheets have the flash clock set to 2MHz. I've set it to 2MHz here. I may undo this change later depending on how slow loading a 14K firmware feels. Was able to save enough space to reduce bootloader size from almost 2.5K to 2K exactly. Adjusted flash offsets to start from 0x800. GPIO values are now mostly reset to power-on defaults. Fixed some formatting. Removed dead code.
2023-06-25 05:01:16 -07:00
BL_flash_status flash_erase_page(uint32_t addr);
Initial bootloader implementation Took a publicly available XMODEM bootloader and made it work on HK32F. Known issues: - Erase is super slow on this MCU. The upload routine erases all flash before loading, which means the first packet seems to hang. This also erases possibly persistent data stored in unused pages on flash.
2023-06-25 01:41:36 -07:00
BL_flash_status flash_write(uint32_t addr, uint8_t *data, uint16_t length);
void jump_to_user_app();
#endif /* CODE_INC_FLASH_H_ */