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Diffstat (limited to 'platforms/arm_atsam/eeprom.c')
| -rw-r--r-- | platforms/arm_atsam/eeprom.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/platforms/arm_atsam/eeprom.c b/platforms/arm_atsam/eeprom.c deleted file mode 100644 index ff1a692623..0000000000 --- a/platforms/arm_atsam/eeprom.c +++ /dev/null @@ -1,184 +0,0 @@ -/* Copyright 2017 Fred Sundvik - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include "eeprom.h" -#include "debug.h" -#include "samd51j18a.h" -#include "core_cm4.h" -#include "component/nvmctrl.h" - -#ifndef EEPROM_SIZE -# include "eeconfig.h" -# define EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4) // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO -#endif - -#ifndef MAX -# define MAX(X, Y) ((X) > (Y) ? (X) : (Y)) -#endif - -#ifndef BUSY_RETRIES -# define BUSY_RETRIES 10000 -#endif - -// #define DEBUG_EEPROM_OUTPUT - -/* - * Debug print utils - */ -#if defined(DEBUG_EEPROM_OUTPUT) -# define eeprom_printf(fmt, ...) xprintf(fmt, ##__VA_ARGS__); -#else /* NO_DEBUG */ -# define eeprom_printf(fmt, ...) -#endif /* NO_DEBUG */ - -__attribute__((aligned(4))) static uint8_t buffer[EEPROM_SIZE] = {0}; -volatile uint8_t * SmartEEPROM8 = (uint8_t *)SEEPROM_ADDR; - -static inline bool eeprom_is_busy(void) { - int timeout = BUSY_RETRIES; - while (NVMCTRL->SEESTAT.bit.BUSY && timeout-- > 0) - ; - - return NVMCTRL->SEESTAT.bit.BUSY; -} - -static uint32_t get_virtual_eeprom_size(void) { - // clang-format off - static const uint32_t VIRTUAL_EEPROM_MAP[11][8] = { - /* 4 8 16 32 64 128 256 512 */ - /* 0*/ { 0, 0, 0, 0, 0, 0, 0, 0 }, - /* 1*/ { 512, 1024, 2048, 4096, 4096, 4096, 4096, 4096 }, - /* 2*/ { 512, 1024, 2048, 4096, 8192, 8192, 8192, 8192 }, - /* 3*/ { 512, 1024, 2048, 4096, 8192, 16384, 16384, 16384 }, - /* 4*/ { 512, 1024, 2048, 4096, 8192, 16384, 16384, 16384 }, - /* 5*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 }, - /* 6*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 }, - /* 7*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 }, - /* 8*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 32768 }, - /* 9*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536 }, - /*10*/ { 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536 }, - }; - // clang-format on - - static uint32_t virtual_eeprom_size = UINT32_MAX; - if (virtual_eeprom_size == UINT32_MAX) { - virtual_eeprom_size = VIRTUAL_EEPROM_MAP[NVMCTRL->SEESTAT.bit.PSZ][NVMCTRL->SEESTAT.bit.SBLK]; - } - // eeprom_printf("get_virtual_eeprom_size:: %d:%d:%d\n", NVMCTRL->SEESTAT.bit.PSZ, NVMCTRL->SEESTAT.bit.SBLK, virtual_eeprom_size); - return virtual_eeprom_size; -} - -uint8_t eeprom_read_byte(const uint8_t *addr) { - uintptr_t offset = (uintptr_t)addr; - if (offset >= MAX(EEPROM_SIZE, get_virtual_eeprom_size())) { - eeprom_printf("eeprom_read_byte:: out of bounds\n"); - return 0x0; - } - - if (get_virtual_eeprom_size() == 0) { - return buffer[offset]; - } - - if (eeprom_is_busy()) { - eeprom_printf("eeprom_write_byte:: timeout\n"); - return 0x0; - } - - return SmartEEPROM8[offset]; -} - -void eeprom_write_byte(uint8_t *addr, uint8_t value) { - uintptr_t offset = (uintptr_t)addr; - if (offset >= MAX(EEPROM_SIZE, get_virtual_eeprom_size())) { - eeprom_printf("eeprom_write_byte:: out of bounds\n"); - return; - } - - if (get_virtual_eeprom_size() == 0) { - buffer[offset] = value; - return; - } - - if (eeprom_is_busy()) { - eeprom_printf("eeprom_write_byte:: timeout\n"); - return; - } - - SmartEEPROM8[offset] = value; -} - -uint16_t eeprom_read_word(const uint16_t *addr) { - const uint8_t *p = (const uint8_t *)addr; - return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8); -} - -uint32_t eeprom_read_dword(const uint32_t *addr) { - const uint8_t *p = (const uint8_t *)addr; - return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8) | (eeprom_read_byte(p + 2) << 16) | (eeprom_read_byte(p + 3) << 24); -} - -void eeprom_read_block(void *buf, const void *addr, size_t len) { - const uint8_t *p = (const uint8_t *)addr; - uint8_t * dest = (uint8_t *)buf; - while (len--) { - *dest++ = eeprom_read_byte(p++); - } -} - -void eeprom_write_word(uint16_t *addr, uint16_t value) { - uint8_t *p = (uint8_t *)addr; - eeprom_write_byte(p++, value); - eeprom_write_byte(p, value >> 8); -} - -void eeprom_write_dword(uint32_t *addr, uint32_t value) { - uint8_t *p = (uint8_t *)addr; - eeprom_write_byte(p++, value); - eeprom_write_byte(p++, value >> 8); - eeprom_write_byte(p++, value >> 16); - eeprom_write_byte(p, value >> 24); -} - -void eeprom_write_block(const void *buf, void *addr, size_t len) { - uint8_t * p = (uint8_t *)addr; - const uint8_t *src = (const uint8_t *)buf; - while (len--) { - eeprom_write_byte(p++, *src++); - } -} - -void eeprom_update_byte(uint8_t *addr, uint8_t value) { eeprom_write_byte(addr, value); } - -void eeprom_update_word(uint16_t *addr, uint16_t value) { - uint8_t *p = (uint8_t *)addr; - eeprom_write_byte(p++, value); - eeprom_write_byte(p, value >> 8); -} - -void eeprom_update_dword(uint32_t *addr, uint32_t value) { - uint8_t *p = (uint8_t *)addr; - eeprom_write_byte(p++, value); - eeprom_write_byte(p++, value >> 8); - eeprom_write_byte(p++, value >> 16); - eeprom_write_byte(p, value >> 24); -} - -void eeprom_update_block(const void *buf, void *addr, size_t len) { - uint8_t * p = (uint8_t *)addr; - const uint8_t *src = (const uint8_t *)buf; - while (len--) { - eeprom_write_byte(p++, *src++); - } -} |