/* * basflash.c * * Created on: 18.12.2012 * Author: mfro */ #include #include #include "bas_string.h" #include "bas_printf.h" #include "diskio.h" #include "ff.h" #include "s19reader.h" static uint32_t mx29lv640d_flash_sectors[] = { 0xe0000000, 0xe0002000, 0xe0004000, 0xe0006000, 0xe0008000, 0xe000a000, 0xe000c000, 0xe000e000, 0xe0010000, 0xe0020000, 0xe0030000, 0xe0040000, 0xe0050000, 0xe0060000, 0xe0070000, 0xe0080000, 0xe0090000, 0xe00a0000, 0xe00b0000, 0xe00c0000, 0xe00d0000, 0xe00e0000, 0xe00f0000, 0xe0100000, 0xe0110000, 0xe0120000, 0xe0130000, 0xe0140000, 0xe0150000, 0xe0160000, 0xe0170000, 0xe0180000, 0xe0190000, 0xe01a0000, 0xe01b0000, 0xe01c0000, 0xe01d0000, 0xe01e0000, 0xe01f0000, 0xe0200000, 0xe0210000, 0xe0220000, 0xe0230000, 0xe0240000, 0xe0250000, 0xe0260000, 0xe0270000, 0xe0280000, 0xe0290000, 0xe02a0000, 0xe02b0000, 0xe02c0000, 0xe02d0000, 0xe02e0000, 0xe02f0000, 0xe0300000, 0xe0310000, 0xe0320000, 0xe0330000, 0xe0340000, 0xe0350000, 0xe0360000, 0xe0370000, 0xe0380000, 0xe0390000, 0xe03a0000, 0xe03b0000, 0xe03c0000, 0xe03d0000, 0xe03e0000, 0xe03f0000, 0xe0400000, 0xe0410000, 0xe0420000, 0xe0430000, 0xe0440000, 0xe0450000, 0xe0460000, 0xe0470000, 0xe0480000, 0xe0490000, 0xe04a0000, 0xe04b0000, 0xe04c0000, 0xe04d0000, 0xe04e0000, 0xe04f0000, 0xe0500000, 0xe0510000, 0xe0520000, 0xe0530000, 0xe0540000, 0xe0550000, 0xe0560000, 0xe0570000, 0xe0580000, 0xe0590000, 0xe05a0000, 0xe05b0000, 0xe05c0000, 0xe05d0000, 0xe05e0000, 0xe05f0000, 0xe0600000, 0xe0610000, 0xe0620000, 0xe0630000, 0xe0640000, 0xe0650000, 0xe0660000, 0xe0670000, 0xe0680000, 0xe0690000, 0xe06a0000, 0xe06b0000, 0xe06c0000, 0xe06d0000, 0xe06e0000, 0xe06f0000, 0xe0700000, 0xe0710000, 0xe0720000, 0xe0730000, 0xe0740000, 0xe0750000, 0xe0760000, 0xe0770000, 0xe0780000, 0xe0790000, 0xe07a0000, 0xe07b0000, 0xe07c0000, 0xe07d0000, 0xe07e0000, 0xe07f0000, 0xe0800000 }; static const int num_flash_sectors = sizeof(mx29lv640d_flash_sectors) / sizeof(uint32_t); typedef struct romram { uint32_t flash_address; uint32_t ram_address; char *name; } ROMRAM; static const struct romram flash_areas[] = { { 0xe0600000, 0x00e00000, "EmuTOS" }, /* EmuTOS */ { 0xe0400000, 0x00e00000, "FireTOS" }, /* FireTOS */ { 0xe0700000, 0x00e00000, "FPGA" }, /* FPGA config */ }; static const int num_flash_areas = sizeof(flash_areas) / sizeof(struct romram); #define FLASH_ADDRESS 0xe0000000 static volatile uint16_t *flash_unlock1 = (volatile uint16_t *) FLASH_ADDRESS + 0xaaa; static volatile uint16_t *flash_unlock2 = (volatile uint16_t *) FLASH_ADDRESS + 0x554; static const uint16_t cmd_unlock1 = 0xaa; static const uint16_t cmd_unlock2 = 0x55; static const uint16_t cmd_sector_erase1 = 0x80; static const uint16_t cmd_sector_erase2 = 0x30; static const uint16_t cmd_sector_erase_suspend = 0xb0; static const uint16_t cmd_sector_erase_resume = 0x30; static const uint16_t cmd_program = 0xa0; static const uint16_t cmd_autoselect = 0x90; static const uint16_t cmd_read = 0xf0; /* * this callback just does nothing besides returning OK. Meant to do a dry run over the file to check its integrity */ static err_t simulate() { err_t ret = OK; return ret; } #ifdef _NOT_USED_ static err_t flash(uint8_t *dst, uint8_t *src, uint32_t length) { err_t ret = OK; /* TODO: do the actual flash */ return ret; } #endif /* _NOT_USED_ */ /* * this callback verifies the data against the S-record file contents after a write to destination */ static err_t verify(uint8_t *dst, uint8_t *src, size_t length) { uint8_t *end = src + length; do { if (*src++ != *dst++) return FAIL; } while (src < end); return OK; } /* * unlock a flash sector */ err_t unlock_flash_sector(int sector_num) { volatile uint32_t rd; uint32_t size = (sector_num < num_flash_sectors ? mx29lv640d_flash_sectors[sector_num + 1] - mx29lv640d_flash_sectors[sector_num] : 0); *flash_unlock1 = cmd_unlock1; *flash_unlock2 = cmd_unlock2; *flash_unlock1 = cmd_autoselect; rd = * (volatile uint32_t *) FLASH_ADDRESS; * (volatile uint32_t *) FLASH_ADDRESS = size; (void) rd; /* get rid of "unused variable" compiler warning */ return OK; } /* * erase a flash sector * * sector_num is the index into the sector table above. * * FIXME: need to disable data cache to ensure proper operation */ err_t erase_flash_sector(int sector_num) { volatile uint32_t rd; uint32_t size = (sector_num < num_flash_sectors ? mx29lv640d_flash_sectors[sector_num + 1] - mx29lv640d_flash_sectors[sector_num] : 0); if (unlock_flash_sector(sector_num) == OK) { *flash_unlock1 = cmd_unlock1; *flash_unlock2 = cmd_unlock2; *flash_unlock1 = cmd_sector_erase1; *flash_unlock1 = cmd_unlock1; *flash_unlock2 = cmd_unlock2; *flash_unlock1 = cmd_sector_erase1; rd = * (volatile uint32_t *) FLASH_ADDRESS; * (volatile uint32_t *) FLASH_ADDRESS = size; (void) rd; /* get rid of "unused variable" compiler warning */ return OK; } return ILLEGAL_SECTOR; } err_t erase_flash_region(void *start_address, size_t length) { err_t err; int sector = -1; int i; /* * determine first sector to erase * * FIXME: if the start address of the .s19 file does not fall on a sector boundary, we * will probably erase vital code in the previous flash sector. This should not happen on the Firebee * where we have fixed areas for the different flash codes, but we should probably take care anyway */ for (i = 0; i < num_flash_sectors; i++) { if (start_address >= (void *) mx29lv640d_flash_sectors[i] && start_address <= (void *) mx29lv640d_flash_sectors[i]) sector = i; } if (sector >= 0 && sector <= num_flash_sectors) { /* * erase sectors until free space equals length * * FIXME: same as above. Currently, there is no prevention against overlapping flash areas. */ do { err = erase_flash_sector(sector); sector++; } while ((uint8_t *) mx29lv640d_flash_sectors[sector] < (uint8_t *) start_address + length && ! err); } else { err = ILLEGAL_SECTOR; } return err; } void srec_flash(char *flash_filename) { DRESULT res; FRESULT fres; FATFS fs; FIL file; err_t err; void *start_address; uint32_t length; res = disk_status(0); if (res == RES_OK) { fres = f_mount(0, &fs); if (fres == FR_OK) { if ((fres = f_open(&file, flash_filename, FA_READ) != FR_OK)) { xprintf("flasher file %s not present on disk\r\n", flash_filename); } else { f_close(&file); /* first pass: parse and check for inconsistencies */ xprintf("check file integrity: "); err = read_srecords(flash_filename, &start_address, &length, simulate); if (err == OK) { xprintf("OK.\r\nerase flash area (from %p, length 0x%lx): ", start_address, length); err = erase_flash_region(start_address, length); /* next pass: copy data to destination */ xprintf("OK.\r\flash data: "); err = read_srecords(flash_filename, &start_address, &length, memcpy); if (err == OK) { /* next pass: verify data */ xprintf("OK.\r\nverify data: "); err = read_srecords(flash_filename, &start_address, &length, verify); if (err == OK) { typedef void void_func(void); void_func *func; xprintf("OK.\r\n"); xprintf("target successfully written and verified. Start address: %p\r\n", start_address); func = (void_func *) start_address; (*func)(); } else { xprintf("failed\r\n"); } } else { xprintf("failed\r\n"); } } else { xprintf("failed\r\n"); } } } else { // xprintf("could not mount FAT FS\r\n"); } f_mount(0, 0L); } else { // xprintf("could not initialize SD card\r\n"); } } err_t srec_load(char *flash_filename) { FRESULT fres; FIL file; err_t err; void *start_address; uint32_t length; if ((fres = f_open(&file, flash_filename, FA_READ) != FR_OK)) { xprintf("flasher file %s not present on disk\r\n", flash_filename); } else { f_close(&file); /* first pass: parse and check for inconsistencies */ xprintf("check file integrity: "); err = read_srecords(flash_filename, &start_address, &length, simulate); if (err == OK) { /* next pass: copy data to destination */ xprintf("OK.\r\ncopy/flash data: "); err = read_srecords(flash_filename, &start_address, &length, memcpy); if (err == OK) { /* next pass: verify data */ xprintf("OK.\r\nverify data: "); err = read_srecords(flash_filename, &start_address, &length, verify); if (err == OK) { typedef void void_func(void); void_func *func; xprintf("OK.\r\n"); xprintf("target successfully written and verified. Start address: %p\r\n", start_address); func = (void_func *) start_address; (*func)(); } else { xprintf("failed\r\n"); } } else { xprintf("failed\r\n"); } } else { xprintf("failed\r\n"); } } return OK; } void basflash(void) { // const char *basflash_str = "\\BASFLASH"; const char *bastest_str = "\\BASTEST"; DRESULT res; FRESULT fres; FATFS fs; xprintf("\r\nHello from BASFLASH.S19!\r\n\r\n"); /* * read \BASTEST\ folder contents (search for .S19-files). If found load them to their final destination * (after BaS has copied them, not their flash location) and return. * * Files located in the BASTEST-folder thus override those in flash. Useful for testing before flashing */ res = disk_status(0); xprintf("disk_status(0) = %d\r\n", res); if (res == RES_OK) { fres = f_mount(0, &fs); xprintf("f_mount() = %d\r\n", fres); if (fres == FR_OK) { DIR directory; fres = f_opendir(&directory, bastest_str); xprintf("f_opendir() = %d\r\n", fres); if (fres == FR_OK) { FILINFO fileinfo; fres = f_readdir(&directory, &fileinfo); xprintf("f_readdir() = %d\r\n", fres); while (fres == FR_OK) { const char *srec_ext = ".S19"; char path[30]; if (fileinfo.fname[0] != '\0') /* found a file */ { xprintf("check file %s (%s == %s ?)\r\n", fileinfo.fname, &fileinfo.fname[strlen(fileinfo.fname) - 4], srec_ext); if (strlen(fileinfo.fname) >= 4 && strncmp(&fileinfo.fname[strlen(fileinfo.fname) - 4], srec_ext, 4) == 0) /* we have a .S19 file */ { /* * build path + filename */ strcpy(path, bastest_str); strcat(path, "\\"); strncat(path, fileinfo.fname, 13); xprintf("loading file %s\r\n", path); /* * load file */ if (srec_load(path) != OK) { xprintf("failed to load file %s\r\n", path); // error handling } } } else break; /* exit if no file found */ fres = f_readdir(&directory, &fileinfo); xprintf("f_readdir() = %d\r\n", fres); } } else { xprintf("f_opendir %s failed with error code %d\r\n", bastest_str, fres); } } else { // xprintf("could not mount FAT FS\r\n"); } f_mount(0, 0L); /* unmount SD card */ } }