// Copyright 2024 Nick Brassel (@tzarc) // SPDX-License-Identifier: GPL-2.0-or-later #include "eeprom.h" #include "via.h" #include "nvm_via.h" #include "nvm_eeprom_eeconfig_internal.h" #include "nvm_eeprom_via_internal.h" void nvm_via_read_magic(uint8_t *magic0, uint8_t *magic1, uint8_t *magic2) { if (magic0) { *magic0 = eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 0); } if (magic1) { *magic1 = eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 1); } if (magic2) { *magic2 = eeprom_read_byte((void *)VIA_EEPROM_MAGIC_ADDR + 2); } } void nvm_via_update_magic(uint8_t magic0, uint8_t magic1, uint8_t magic2) { eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 0, magic0); eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 1, magic1); eeprom_update_byte((void *)VIA_EEPROM_MAGIC_ADDR + 2, magic2); } uint32_t nvm_via_read_layout_options(void) { uint32_t value = 0; // Start at the most significant byte void *source = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR); for (uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++) { value = value << 8; value |= eeprom_read_byte(source); source++; } return value; } void nvm_via_update_layout_options(uint32_t val) { // Start at the least significant byte void *target = (void *)(VIA_EEPROM_LAYOUT_OPTIONS_ADDR + VIA_EEPROM_LAYOUT_OPTIONS_SIZE - 1); for (uint8_t i = 0; i < VIA_EEPROM_LAYOUT_OPTIONS_SIZE; i++) { eeprom_update_byte(target, val & 0xFF); val = val >> 8; target--; } } uint32_t nvm_via_read_custom_config(void *buf, uint32_t offset, uint32_t length) { #if VIA_EEPROM_CUSTOM_CONFIG_SIZE > 0 void *ee_start = (void *)(uintptr_t)(VIA_EEPROM_CUSTOM_CONFIG_ADDR + offset); void *ee_end = (void *)(uintptr_t)(VIA_EEPROM_CUSTOM_CONFIG_ADDR + MIN(VIA_EEPROM_CUSTOM_CONFIG_SIZE, offset + length)); eeprom_read_block(buf, ee_start, ee_end - ee_start); return ee_end - ee - start; #else return 0; #endif } uint32_t nvm_via_update_custom_config(const void *buf, uint32_t offset, uint32_t length) { #if VIA_EEPROM_CUSTOM_CONFIG_SIZE > 0 void *ee_start = (void *)(uintptr_t)(VIA_EEPROM_CUSTOM_CONFIG_ADDR + offset); void *ee_end = (void *)(uintptr_t)(VIA_EEPROM_CUSTOM_CONFIG_ADDR + MIN(VIA_EEPROM_CUSTOM_CONFIG_SIZE, offset + length)); eeprom_update_block(buf, ee_start, ee_end - ee_start); return ee_end - ee_start; #else return 0; #endif }