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// SPDX-License-Identifier: GPL-2.0-or-later /*************************************************************************** * Copyright (C) 2022 by Daniel Anselmi * * danselmi@gmx.ch * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include <jtag/jtag.h> #include <jtag/adapter.h> #include <helper/bits.h> #include "pld.h" #include "raw_bit.h" #define NO_OP 0x02 #define ERASE_SRAM 0x05 #define SRAM_ERASE_DONE 0x09 #define IDCODE 0x11 #define ADDRESS_INITIALIZATION 0x12 #define READ_USERCODE 0x13 #define CONFIG_ENABLE 0x15 #define TRANSFER_CONFIGURATION_DATA 0x17 #define CONFIG_DISABLE 0x3A #define RELOAD 0x3C #define STATUS_REGISTER 0x41 #define ERASE_FLASH 0x75 #define ENABLE_2ND_FLASH 0x78 #define USER1 0x42 #define USER2 0x43 #define STAUS_MASK_MEMORY_ERASE BIT(5) #define STAUS_MASK_SYSTEM_EDIT_MODE BIT(7) struct gowin_pld_device { struct jtag_tap *tap; }; struct gowin_bit_file { struct raw_bit_file raw_file; size_t capacity; uint32_t id; uint16_t stored_checksum; int compressed; int crc_en; uint16_t checksum; uint8_t replace8x; uint8_t replace4x; uint8_t replace2x; }; static uint64_t gowin_read_fs_file_bitsequence(const char *bits, int length) { uint64_t res = 0; for (int i = 0; i < length; i++) res = (res << 1) | (*bits++ == '1' ? 1 : 0); return res; } static int gowin_add_byte_to_bit_file(struct gowin_bit_file *bit_file, uint8_t byte) { if (bit_file->raw_file.length + 1 > bit_file->capacity) { uint8_t *buffer; if (bit_file->raw_file.data) buffer = realloc(bit_file->raw_file.data, bit_file->capacity + 8192); else buffer = malloc(8192); if (!buffer) { LOG_ERROR("Out of memory"); return ERROR_FAIL; } bit_file->raw_file.data = buffer; bit_file->capacity += 8192; } bit_file->raw_file.data[bit_file->raw_file.length++] = byte; return ERROR_OK; } static int gowin_read_fs_file_header(struct gowin_bit_file *bit_file, FILE *stream) { if (!bit_file) return ERROR_FAIL; int end_of_header = 0; while (!end_of_header) { char buffer[256]; char *line = fgets(buffer, 256, stream); if (!line || feof(stream) || ferror(stream)) return ERROR_FAIL; if (line[0] == '/') continue; size_t line_length = strlen(line); if (line[line_length - 1] != '\n') return ERROR_FAIL; line_length--; for (unsigned int i = 0; i < line_length; i += 8) { uint8_t byte = gowin_read_fs_file_bitsequence(line + i, 8); int retval = gowin_add_byte_to_bit_file(bit_file, byte); if (retval != ERROR_OK) return retval; } uint8_t key = gowin_read_fs_file_bitsequence(line, 8); line += 8; uint64_t value = gowin_read_fs_file_bitsequence(line, line_length - 8); if (key == 0x06) { bit_file->id = value & 0xffffffff; } else if (key == 0x3B) { end_of_header = 1; bit_file->crc_en = (value & BIT(23)) ? 1 : 0; } } return ERROR_OK; } static int gowin_read_fs_file(struct gowin_bit_file *bit_file, const char *filename) { FILE *input_file = fopen(filename, "r"); if (!input_file) { LOG_ERROR("Couldn't open %s: %s", filename, strerror(errno)); return ERROR_PLD_FILE_LOAD_FAILED; } int retval = gowin_read_fs_file_header(bit_file, input_file); if (retval != ERROR_OK) { free(bit_file->raw_file.data); fclose(input_file); return retval; } char digits_buffer[9]; /* 8 + 1 trailing zero */ do { char *digits = fgets(digits_buffer, 9, input_file); if (feof(input_file)) break; if (!digits || ferror(input_file)) { free(bit_file->raw_file.data); fclose(input_file); return ERROR_FAIL; } if (digits[0] == '\n') continue; if (strlen(digits) != 8) { free(bit_file->raw_file.data); fclose(input_file); return ERROR_FAIL; } uint8_t byte = gowin_read_fs_file_bitsequence(digits, 8); retval = gowin_add_byte_to_bit_file(bit_file, byte); if (retval != ERROR_OK) { free(bit_file->raw_file.data); fclose(input_file); return ERROR_FAIL; } } while (1); fclose(input_file); return ERROR_OK; } static int gowin_read_file(struct gowin_bit_file *bit_file, const char *filename, bool *is_fs) { memset(bit_file, 0, sizeof(struct gowin_bit_file)); if (!filename || !bit_file) return ERROR_COMMAND_SYNTAX_ERROR; const char *file_suffix_pos = strrchr(filename, '.'); if (!file_suffix_pos) { LOG_ERROR("Unable to detect filename suffix"); return ERROR_PLD_FILE_LOAD_FAILED; } /* check if binary .bin or ascii .fs */ if (strcasecmp(file_suffix_pos, ".bin") == 0) { *is_fs = false; return cpld_read_raw_bit_file(&bit_file->raw_file, filename); } else if (strcasecmp(file_suffix_pos, ".fs") == 0) { *is_fs = true; return gowin_read_fs_file(bit_file, filename); } LOG_ERROR("Filetype not supported, expecting .fs or .bin file"); return ERROR_PLD_FILE_LOAD_FAILED; } static int gowin_set_instr(struct jtag_tap *tap, uint8_t new_instr) { struct scan_field field; field.num_bits = tap->ir_length; void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1); if (!t) { LOG_ERROR("Out of memory"); return ERROR_FAIL; } field.out_value = t; buf_set_u32(t, 0, field.num_bits, new_instr); field.in_value = NULL; jtag_add_ir_scan(tap, &field, TAP_IDLE); jtag_add_runtest(3, TAP_IDLE); free(t); return ERROR_OK; } static int gowin_read_register(struct jtag_tap *tap, uint32_t reg, uint32_t *result) { struct scan_field field; int retval = gowin_set_instr(tap, reg); if (retval != ERROR_OK) return retval; retval = jtag_execute_queue(); if (retval != ERROR_OK) return retval; uint8_t buf[4] = {0}; field.check_mask = NULL; field.check_value = NULL; field.num_bits = 32; field.out_value = buf; field.in_value = buf; jtag_add_dr_scan(tap, 1, &field, TAP_IDLE); retval = jtag_execute_queue(); *result = le_to_h_u32(buf); return retval; } static int gowin_check_status_flag(struct jtag_tap *tap, uint32_t mask, uint32_t flag) { uint32_t status = 0; int retries = 0; do { int retval = gowin_read_register(tap, STATUS_REGISTER, &status); if (retval != ERROR_OK) return retval; if (retries++ == 100000) return ERROR_FAIL; } while ((status & mask) != flag); return ERROR_OK; } static int gowin_enable_config(struct jtag_tap *tap) { int retval = gowin_set_instr(tap, CONFIG_ENABLE); if (retval != ERROR_OK) return retval; retval = jtag_execute_queue(); if (retval != ERROR_OK) return retval; return gowin_check_status_flag(tap, STAUS_MASK_SYSTEM_EDIT_MODE, STAUS_MASK_SYSTEM_EDIT_MODE); } static int gowin_disable_config(struct jtag_tap *tap) { int retval = gowin_set_instr(tap, CONFIG_DISABLE); if (retval != ERROR_OK) return retval; retval = jtag_execute_queue(); if (retval != ERROR_OK) return retval; return gowin_check_status_flag(tap, STAUS_MASK_SYSTEM_EDIT_MODE, 0); } static int gowin_reload(struct jtag_tap *tap) { int retval = gowin_set_instr(tap, RELOAD); if (retval != ERROR_OK) return retval; retval = gowin_set_instr(tap, NO_OP); if (retval != ERROR_OK) return retval; return jtag_execute_queue(); } static int gowin_runtest_idle(struct jtag_tap *tap, unsigned int frac_sec) { int speed = adapter_get_speed_khz() * 1000; int cycles = DIV_ROUND_UP(speed, frac_sec); jtag_add_runtest(cycles, TAP_IDLE); return jtag_execute_queue(); } static int gowin_erase_sram(struct jtag_tap *tap, bool tx_erase_done) { /* config is already enabled */ int retval = gowin_set_instr(tap, ERASE_SRAM); if (retval != ERROR_OK) return retval; retval = gowin_set_instr(tap, NO_OP); if (retval != ERROR_OK) return retval; /* Delay or Run Test 2~10ms */ /* 10 ms is worst case for GW2A-55 */ jtag_add_sleep(10000); retval = jtag_execute_queue(); if (retval != ERROR_OK) return retval; retval = gowin_check_status_flag(tap, STAUS_MASK_MEMORY_ERASE, STAUS_MASK_MEMORY_ERASE); if (retval != ERROR_OK) return retval; if (tx_erase_done) { retval = gowin_set_instr(tap, SRAM_ERASE_DONE); if (retval != ERROR_OK) return retval; retval = gowin_set_instr(tap, NO_OP); if (retval != ERROR_OK) return retval; retval = jtag_execute_queue(); if (retval != ERROR_OK) return retval; /* gen clock cycles in RUN/IDLE for 500us -> 1/500us = 2000/s */ retval = gowin_runtest_idle(tap, 2000); if (retval != ERROR_OK) return retval; } retval = gowin_set_instr(tap, NO_OP); if (retval != ERROR_OK) return retval; return jtag_execute_queue(); } static int gowin_load_to_sram(struct pld_device *pld_device, const char *filename) { if (!pld_device) return ERROR_FAIL; struct gowin_pld_device *gowin_info = pld_device->driver_priv; if (!gowin_info || !gowin_info->tap) return ERROR_FAIL; struct jtag_tap *tap = gowin_info->tap; bool is_fs = false; struct gowin_bit_file bit_file; int retval = gowin_read_file(&bit_file, filename, &is_fs); if (retval != ERROR_OK) return retval; for (unsigned int i = 0; i < bit_file.raw_file.length; i++) bit_file.raw_file.data[i] = flip_u32(bit_file.raw_file.data[i], 8); uint32_t id; retval = gowin_read_register(tap, IDCODE, &id); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } if (is_fs && id != bit_file.id) { free(bit_file.raw_file.data); LOG_ERROR("Id on device (0x%8.8" PRIx32 ") and id in bit-stream (0x%8.8" PRIx32 ") don't match.", id, bit_file.id); return ERROR_FAIL; } retval = gowin_enable_config(tap); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } retval = gowin_erase_sram(tap, false); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } retval = gowin_set_instr(tap, ADDRESS_INITIALIZATION); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } retval = gowin_set_instr(tap, TRANSFER_CONFIGURATION_DATA); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } /* scan out the bitstream */ struct scan_field field; field.num_bits = bit_file.raw_file.length * 8; field.out_value = bit_file.raw_file.data; field.in_value = bit_file.raw_file.data; jtag_add_dr_scan(gowin_info->tap, 1, &field, TAP_IDLE); jtag_add_runtest(3, TAP_IDLE); retval = jtag_execute_queue(); if (retval != ERROR_OK) { free(bit_file.raw_file.data); return retval; } retval = gowin_disable_config(tap); free(bit_file.raw_file.data); if (retval != ERROR_OK) return retval; retval = gowin_set_instr(gowin_info->tap, NO_OP); if (retval != ERROR_OK) return retval; retval = jtag_execute_queue(); return retval; } static int gowin_read_register_command(struct pld_device *pld_device, uint32_t cmd, uint32_t *value) { if (!pld_device) return ERROR_FAIL; struct gowin_pld_device *gowin_info = pld_device->driver_priv; if (!gowin_info || !gowin_info->tap) return ERROR_FAIL; return gowin_read_register(gowin_info->tap, cmd, value); } static int gowin_reload_command(struct pld_device *pld_device) { if (!pld_device) return ERROR_FAIL; struct gowin_pld_device *gowin_info = pld_device->driver_priv; if (!gowin_info || !gowin_info->tap) return ERROR_FAIL; return gowin_reload(gowin_info->tap); } static int gowin_get_ipdbg_hub(int user_num, struct pld_device *pld_device, struct pld_ipdbg_hub *hub) { if (!pld_device) return ERROR_FAIL; struct gowin_pld_device *pld_device_info = pld_device->driver_priv; if (!pld_device_info || !pld_device_info->tap) return ERROR_FAIL; hub->tap = pld_device_info->tap; if (user_num == 1) { hub->user_ir_code = USER1; } else if (user_num == 2) { hub->user_ir_code = USER2; } else { LOG_ERROR("gowin devices only have user register 1 & 2"); return ERROR_FAIL; } return ERROR_OK; } COMMAND_HANDLER(gowin_read_status_command_handler) { if (CMD_ARGC != 1) return ERROR_COMMAND_SYNTAX_ERROR; struct pld_device *device = get_pld_device_by_name_or_numstr(CMD_ARGV[0]); if (!device) { command_print(CMD, "pld device '#%s' is out of bounds or unknown", CMD_ARGV[0]); return ERROR_FAIL; } uint32_t status = 0;


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