STM32 EEPROM Emulation (#3741)

* STM32 EEPROM Emulation

- Added EEPROM emulation libaries from libmaple and Arduino_STM32. https://github.com/rogerclarkmelbourne/Arduino_STM32 and https://github.com/leaflabs/libmaple.
- Renamed teensy EEPROM library and added conditional selection of library.
- Remapped EEPROM memory map for 16 byte blocks (as is with STM32f3xx MCUs).
- Added EEPROM initialization in main.c of Chibios.
- Added EEPROM format to clear the emulated pages when EEPROM is marked as invalid.

* Fixed ifdef

1 files changed, 0 insertions, 632 deletions

diff --git a/tmk_core/common/chibios/eeprom.c b/tmk_core/common/chibios/eeprom.c
deleted file mode 100644
index 9061b790c..000000000
--- a/tmk_core/common/chibios/eeprom.c
+++ /dev/null
@@ -1,632 +0,0 @@
-#include "ch.h"
-#include "hal.h"
-
-#include "eeconfig.h"
-
-/*************************************/
-/*          Hardware backend         */
-/*                                   */
-/*    Code from PJRC/Teensyduino     */
-/*************************************/
-
-/* Teensyduino Core Library
- * http://www.pjrc.com/teensy/
- * Copyright (c) 2013 PJRC.COM, LLC.
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * 1. The above copyright notice and this permission notice shall be 
- * included in all copies or substantial portions of the Software.
- *
- * 2. If the Software is incorporated into a build system that allows 
- * selection among a list of target devices, then similar target
- * devices manufactured by PJRC.COM must be included in the list of
- * target devices and selectable in the same manner.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-
-#if defined(K20x) /* chip selection */
-/* Teensy 3.0, 3.1, 3.2; mchck; infinity keyboard */
-
-// The EEPROM is really RAM with a hardware-based backup system to
-// flash memory.  Selecting a smaller size EEPROM allows more wear
-// leveling, for higher write endurance.  If you edit this file,
-// set this to the smallest size your application can use.  Also,
-// due to Freescale's implementation, writing 16 or 32 bit words
-// (aligned to 2 or 4 byte boundaries) has twice the endurance
-// compared to writing 8 bit bytes.
-//
-#define EEPROM_SIZE 32
-
-// Writing unaligned 16 or 32 bit data is handled automatically when
-// this is defined, but at a cost of extra code size.  Without this,
-// any unaligned write will cause a hard fault exception!  If you're
-// absolutely sure all 16 and 32 bit writes will be aligned, you can
-// remove the extra unnecessary code.
-//
-#define HANDLE_UNALIGNED_WRITES
-
-// Minimum EEPROM Endurance
-// ------------------------
-#if (EEPROM_SIZE == 2048)	// 35000 writes/byte or 70000 writes/word
-  #define EEESIZE 0x33
-#elif (EEPROM_SIZE == 1024)	// 75000 writes/byte or 150000 writes/word
-  #define EEESIZE 0x34
-#elif (EEPROM_SIZE == 512)	// 155000 writes/byte or 310000 writes/word
-  #define EEESIZE 0x35
-#elif (EEPROM_SIZE == 256)	// 315000 writes/byte or 630000 writes/word
-  #define EEESIZE 0x36
-#elif (EEPROM_SIZE == 128)	// 635000 writes/byte or 1270000 writes/word
-  #define EEESIZE 0x37
-#elif (EEPROM_SIZE == 64)	// 1275000 writes/byte or 2550000 writes/word
-  #define EEESIZE 0x38
-#elif (EEPROM_SIZE == 32)	// 2555000 writes/byte or 5110000 writes/word
-  #define EEESIZE 0x39
-#endif
-
-/** \brief eeprom initialization
- *
- * FIXME: needs doc
- */
-void eeprom_initialize(void)
-{
-	uint32_t count=0;
-	uint16_t do_flash_cmd[] = {
-		0xf06f, 0x037f, 0x7003, 0x7803,
-		0xf013, 0x0f80, 0xd0fb, 0x4770};
-	uint8_t status;
-
-	if (FTFL->FCNFG & FTFL_FCNFG_RAMRDY) {
-		// FlexRAM is configured as traditional RAM
-		// We need to reconfigure for EEPROM usage
-		FTFL->FCCOB0 = 0x80; // PGMPART = Program Partition Command
-		FTFL->FCCOB4 = EEESIZE; // EEPROM Size
-		FTFL->FCCOB5 = 0x03; // 0K for Dataflash, 32K for EEPROM backup
-		__disable_irq();
-		// do_flash_cmd() must execute from RAM.  Luckily the C syntax is simple...
-		(*((void (*)(volatile uint8_t *))((uint32_t)do_flash_cmd | 1)))(&(FTFL->FSTAT));
-		__enable_irq();
-		status = FTFL->FSTAT;
-		if (status & (FTFL_FSTAT_RDCOLERR|FTFL_FSTAT_ACCERR|FTFL_FSTAT_FPVIOL)) {
-			FTFL->FSTAT = (status & (FTFL_FSTAT_RDCOLERR|FTFL_FSTAT_ACCERR|FTFL_FSTAT_FPVIOL));
-			return; // error
-		}
-	}
-	// wait for eeprom to become ready (is this really necessary?)
-	while (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) {
-		if (++count > 20000) break;
-	}
-}
-
-#define FlexRAM ((uint8_t *)0x14000000)
-
-/** \brief eeprom read byte
- *
- * FIXME: needs doc
- */
-uint8_t eeprom_read_byte(const uint8_t *addr)
-{
-	uint32_t offset = (uint32_t)addr;
-	if (offset >= EEPROM_SIZE) return 0;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	return FlexRAM[offset];
-}
-
-/** \brief eeprom read word
- *
- * FIXME: needs doc
- */
-uint16_t eeprom_read_word(const uint16_t *addr)
-{
-	uint32_t offset = (uint32_t)addr;
-	if (offset >= EEPROM_SIZE-1) return 0;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	return *(uint16_t *)(&FlexRAM[offset]);
-}
-
-/** \brief eeprom read dword
- *
- * FIXME: needs doc
- */
-uint32_t eeprom_read_dword(const uint32_t *addr)
-{
-	uint32_t offset = (uint32_t)addr;
-	if (offset >= EEPROM_SIZE-3) return 0;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	return *(uint32_t *)(&FlexRAM[offset]);
-}
-
-/** \brief eeprom read block
- *
- * FIXME: needs doc
- */
-void eeprom_read_block(void *buf, const void *addr, uint32_t len)
-{
-	uint32_t offset = (uint32_t)addr;
-	uint8_t *dest = (uint8_t *)buf;
-	uint32_t end = offset + len;
-	
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	if (end > EEPROM_SIZE) end = EEPROM_SIZE;
-	while (offset < end) {
-		*dest++ = FlexRAM[offset++];
-	}
-}
-
-/** \brief eeprom is ready
- *
- * FIXME: needs doc
- */
-int eeprom_is_ready(void)
-{
-	return (FTFL->FCNFG & FTFL_FCNFG_EEERDY) ? 1 : 0;
-}
-
-/** \brief flexram wait
- *
- * FIXME: needs doc
- */
-static void flexram_wait(void)
-{
-	while (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) {
-		// TODO: timeout
-	}
-}
-
-/** \brief eeprom_write_byte
- *
- * FIXME: needs doc
- */
-void eeprom_write_byte(uint8_t *addr, uint8_t value)
-{
-	uint32_t offset = (uint32_t)addr;
-
-	if (offset >= EEPROM_SIZE) return;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	if (FlexRAM[offset] != value) {
-		FlexRAM[offset] = value;
-		flexram_wait();
-	}
-}
-
-/** \brief eeprom write word
- *
- * FIXME: needs doc
- */
-void eeprom_write_word(uint16_t *addr, uint16_t value)
-{
-	uint32_t offset = (uint32_t)addr;
-
-	if (offset >= EEPROM_SIZE-1) return;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-#ifdef HANDLE_UNALIGNED_WRITES
-	if ((offset & 1) == 0) {
-#endif
-		if (*(uint16_t *)(&FlexRAM[offset]) != value) {
-			*(uint16_t *)(&FlexRAM[offset]) = value;
-			flexram_wait();
-		}
-#ifdef HANDLE_UNALIGNED_WRITES
-	} else {
-		if (FlexRAM[offset] != value) {
-			FlexRAM[offset] = value;
-			flexram_wait();
-		}
-		if (FlexRAM[offset + 1] != (value >> 8)) {
-			FlexRAM[offset + 1] = value >> 8;
-			flexram_wait();
-		}
-	}
-#endif
-}
-
-/** \brief eeprom write dword
- *
- * FIXME: needs doc
- */
-void eeprom_write_dword(uint32_t *addr, uint32_t value)
-{
-	uint32_t offset = (uint32_t)addr;
-
-	if (offset >= EEPROM_SIZE-3) return;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-#ifdef HANDLE_UNALIGNED_WRITES
-	switch (offset & 3) {
-	case 0:
-#endif
-		if (*(uint32_t *)(&FlexRAM[offset]) != value) {
-			*(uint32_t *)(&FlexRAM[offset]) = value;
-			flexram_wait();
-		}
-		return;
-#ifdef HANDLE_UNALIGNED_WRITES
-	case 2:
-		if (*(uint16_t *)(&FlexRAM[offset]) != value) {
-			*(uint16_t *)(&FlexRAM[offset]) = value;
-			flexram_wait();
-		}
-		if (*(uint16_t *)(&FlexRAM[offset + 2]) != (value >> 16)) {
-			*(uint16_t *)(&FlexRAM[offset + 2]) = value >> 16;
-			flexram_wait();
-		}
-		return;
-	default:
-		if (FlexRAM[offset] != value) {
-			FlexRAM[offset] = value;
-			flexram_wait();
-		}
-		if (*(uint16_t *)(&FlexRAM[offset + 1]) != (value >> 8)) {
-			*(uint16_t *)(&FlexRAM[offset + 1]) = value >> 8;
-			flexram_wait();
-		}
-		if (FlexRAM[offset + 3] != (value >> 24)) {
-			FlexRAM[offset + 3] = value >> 24;
-			flexram_wait();
-		}
-	}
-#endif
-}
-
-/** \brief eeprom write block
- *
- * FIXME: needs doc
- */
-void eeprom_write_block(const void *buf, void *addr, uint32_t len)
-{
-	uint32_t offset = (uint32_t)addr;
-	const uint8_t *src = (const uint8_t *)buf;
-
-	if (offset >= EEPROM_SIZE) return;
-	if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
-	if (len >= EEPROM_SIZE) len = EEPROM_SIZE;
-	if (offset + len >= EEPROM_SIZE) len = EEPROM_SIZE - offset;
-	while (len > 0) {
-		uint32_t lsb = offset & 3;
-		if (lsb == 0 && len >= 4) {
-			// write aligned 32 bits
-			uint32_t val32;
-			val32 = *src++;
-			val32 |= (*src++ << 8);
-			val32 |= (*src++ << 16);
-			val32 |= (*src++ << 24);
-			if (*(uint32_t *)(&FlexRAM[offset]) != val32) {
-				*(uint32_t *)(&FlexRAM[offset]) = val32;
-				flexram_wait();
-			}
-			offset += 4;
-			len -= 4;
-		} else if ((lsb == 0 || lsb == 2) && len >= 2) {
-			// write aligned 16 bits
-			uint16_t val16;
-			val16 = *src++;
-			val16 |= (*src++ << 8);
-			if (*(uint16_t *)(&FlexRAM[offset]) != val16) {
-				*(uint16_t *)(&FlexRAM[offset]) = val16;
-				flexram_wait();
-			}
-			offset += 2;
-			len -= 2;
-		} else {
-			// write 8 bits
-			uint8_t val8 = *src++;
-			if (FlexRAM[offset] != val8) {
-				FlexRAM[offset] = val8;
-				flexram_wait();
-			}
-			offset++;
-			len--;
-		}
-	}
-}
-
-/*
-void do_flash_cmd(volatile uint8_t *fstat)
-{
-	*fstat = 0x80;
-	while ((*fstat & 0x80) == 0) ; // wait
-}
-00000000 <do_flash_cmd>:
-   0:	f06f 037f 	mvn.w	r3, #127	; 0x7f
-   4:	7003      	strb	r3, [r0, #0]
-   6:	7803      	ldrb	r3, [r0, #0]
-   8:	f013 0f80 	tst.w	r3, #128	; 0x80
-   c:	d0fb      	beq.n	6 <do_flash_cmd+0x6>
-   e:	4770      	bx	lr
-*/
-
-#elif defined(KL2x) /* chip selection */
-/* Teensy LC (emulated) */
-
-#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
-
-extern uint32_t __eeprom_workarea_start__;
-extern uint32_t __eeprom_workarea_end__;
-
-#define EEPROM_SIZE 128
-
-static uint32_t flashend = 0;
-
-void eeprom_initialize(void)
-{
-	const uint16_t *p = (uint16_t *)SYMVAL(__eeprom_workarea_start__);
-
-	do {
-		if (*p++ == 0xFFFF) {
-			flashend = (uint32_t)(p - 2);
-			return;
-		}
-	} while (p < (uint16_t *)SYMVAL(__eeprom_workarea_end__));
-	flashend = (uint32_t)((uint16_t *)SYMVAL(__eeprom_workarea_end__) - 1);
-}
-
-uint8_t eeprom_read_byte(const uint8_t *addr)
-{
-	uint32_t offset = (uint32_t)addr;
-	const uint16_t *p = (uint16_t *)SYMVAL(__eeprom_workarea_start__);
-	const uint16_t *end = (const uint16_t *)((uint32_t)flashend);
-	uint16_t val;
-	uint8_t data=0xFF;
-
-	if (!end) {
-		eeprom_initialize();
-		end = (const uint16_t *)((uint32_t)flashend);
-	}
-	if (offset < EEPROM_SIZE) {
-		while (p <= end) {
-			val = *p++;
-			if ((val & 255) == offset) data = val >> 8;
-		}
-	}
-	return data;
-}
-
-static void flash_write(const uint16_t *code, uint32_t addr, uint32_t data)
-{
-	// with great power comes great responsibility....
-	uint32_t stat;
-	*(uint32_t *)&(FTFA->FCCOB3) = 0x06000000 | (addr & 0x00FFFFFC);
-	*(uint32_t *)&(FTFA->FCCOB7) = data;
-	__disable_irq();
-	(*((void (*)(volatile uint8_t *))((uint32_t)code | 1)))(&(FTFA->FSTAT));
-	__enable_irq();
-	stat = FTFA->FSTAT & (FTFA_FSTAT_RDCOLERR|FTFA_FSTAT_ACCERR|FTFA_FSTAT_FPVIOL);
-	if (stat) {
-		FTFA->FSTAT = stat;
-	}
-	MCM->PLACR |= MCM_PLACR_CFCC;
-}
-
-void eeprom_write_byte(uint8_t *addr, uint8_t data)
-{
-	uint32_t offset = (uint32_t)addr;
-	const uint16_t *p, *end = (const uint16_t *)((uint32_t)flashend);
-	uint32_t i, val, flashaddr;
-	uint16_t do_flash_cmd[] = {
-		0x2380, 0x7003, 0x7803, 0xb25b, 0x2b00, 0xdafb, 0x4770};
-	uint8_t buf[EEPROM_SIZE];
-
-	if (offset >= EEPROM_SIZE) return;
-	if (!end) {
-		eeprom_initialize();
-		end = (const uint16_t *)((uint32_t)flashend);
-	}
-	if (++end < (uint16_t *)SYMVAL(__eeprom_workarea_end__)) {
-		val = (data << 8) | offset;
-		flashaddr = (uint32_t)end;
-		flashend = flashaddr;
-		if ((flashaddr & 2) == 0) {
-			val |= 0xFFFF0000;
-		} else {
-			val <<= 16;
-			val |= 0x0000FFFF;
-		}
-		flash_write(do_flash_cmd, flashaddr, val);
-	} else {
-		for (i=0; i < EEPROM_SIZE; i++) {
-			buf[i] = 0xFF;
-		}
-		val = 0;
-		for (p = (uint16_t *)SYMVAL(__eeprom_workarea_start__); p < (uint16_t *)SYMVAL(__eeprom_workarea_end__); p++) {
-			val = *p;
-			if ((val & 255) < EEPROM_SIZE) {
-				buf[val & 255] = val >> 8;
-			}
-		}
-		buf[offset] = data;
-		for (flashaddr=(uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_start__); flashaddr < (uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_end__); flashaddr += 1024) {
-			*(uint32_t *)&(FTFA->FCCOB3) = 0x09000000 | flashaddr;
-			__disable_irq();
-			(*((void (*)(volatile uint8_t *))((uint32_t)do_flash_cmd | 1)))(&(FTFA->FSTAT));
-			__enable_irq();
-			val = FTFA->FSTAT & (FTFA_FSTAT_RDCOLERR|FTFA_FSTAT_ACCERR|FTFA_FSTAT_FPVIOL);;
-			if (val) FTFA->FSTAT = val;
-			MCM->PLACR |= MCM_PLACR_CFCC;
-		}
-		flashaddr=(uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_start__);
-		for (i=0; i < EEPROM_SIZE; i++) {
-			if (buf[i] == 0xFF) continue;
-			if ((flashaddr & 2) == 0) {
-				val = (buf[i] << 8) | i;
-			} else {
-				val = val | (buf[i] << 24) | (i << 16);
-				flash_write(do_flash_cmd, flashaddr, val);
-			}
-			flashaddr += 2;
-		}
-		flashend = flashaddr;
-		if ((flashaddr & 2)) {
-			val |= 0xFFFF0000;
-			flash_write(do_flash_cmd, flashaddr, val);
-		}
-	}
-}
-
-/*
-void do_flash_cmd(volatile uint8_t *fstat)
-{
-        *fstat = 0x80;
-        while ((*fstat & 0x80) == 0) ; // wait
-}
-00000000 <do_flash_cmd>:
-   0:	2380      	movs	r3, #128	; 0x80
-   2:	7003      	strb	r3, [r0, #0]
-   4:	7803      	ldrb	r3, [r0, #0]
-   6:	b25b      	sxtb	r3, r3
-   8:	2b00      	cmp	r3, #0
-   a:	dafb      	bge.n	4 <do_flash_cmd+0x4>
-   c:	4770      	bx	lr
-*/
-
-
-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, uint32_t len)
-{
-	const uint8_t *p = (const uint8_t *)addr;
-	uint8_t *dest = (uint8_t *)buf;
-	while (len--) {
-		*dest++ = eeprom_read_byte(p++);
-	}
-}
-
-int eeprom_is_ready(void)
-{
-	return 1;
-}
-
-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, uint32_t len)
-{
-	uint8_t *p = (uint8_t *)addr;
-	const uint8_t *src = (const uint8_t *)buf;
-	while (len--) {
-		eeprom_write_byte(p++, *src++);
-	}
-}
-
-#else
-// No EEPROM supported, so emulate it
-
-#define EEPROM_SIZE 32
-static uint8_t buffer[EEPROM_SIZE];
-
-uint8_t eeprom_read_byte(const uint8_t *addr) {
-	uint32_t offset = (uint32_t)addr;
-	return buffer[offset];
-}
-
-void eeprom_write_byte(uint8_t *addr, uint8_t value) {
-	uint32_t offset = (uint32_t)addr;
-	buffer[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, uint32_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, uint32_t len) {
-	uint8_t *p = (uint8_t *)addr;
-	const uint8_t *src = (const uint8_t *)buf;
-	while (len--) {
-		eeprom_write_byte(p++, *src++);
-	}
-}
-
-#endif /* chip selection */
-// The update functions just calls write for now, but could probably be optimized
-
-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, uint32_t len) {
-	uint8_t *p = (uint8_t *)addr;
-	const uint8_t *src = (const uint8_t *)buf;
-	while (len--) {
-		eeprom_write_byte(p++, *src++);
-	}
-}