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-rw-r--r--drivers/eeprom/eeprom_i2c.c23
-rw-r--r--drivers/eeprom/eeprom_stm32_L0_L1.c96
-rw-r--r--drivers/eeprom/eeprom_stm32_L0_L1.h33
3 files changed, 22 insertions, 130 deletions
diff --git a/drivers/eeprom/eeprom_i2c.c b/drivers/eeprom/eeprom_i2c.c
index 4210f06f9f..8e80ff544f 100644
--- a/drivers/eeprom/eeprom_i2c.c
+++ b/drivers/eeprom/eeprom_i2c.c
@@ -16,6 +16,9 @@
#include <stdint.h>
#include <string.h>
+#if defined(EXTERNAL_EEPROM_WP_PIN)
+# include "gpio.h"
+#endif
/*
Note that the implementations of eeprom_XXXX_YYYY on AVR are normally
@@ -50,7 +53,14 @@ static inline void fill_target_address(uint8_t *buffer, const void *addr) {
}
}
-void eeprom_driver_init(void) { i2c_init(); }
+void eeprom_driver_init(void) {
+ i2c_init();
+#if defined(EXTERNAL_EEPROM_WP_PIN)
+ /* We are setting the WP pin to high in a way that requires at least two bit-flips to change back to 0 */
+ writePin(EXTERNAL_EEPROM_WP_PIN, 1);
+ setPinInputHigh(EXTERNAL_EEPROM_WP_PIN);
+#endif
+}
void eeprom_driver_erase(void) {
#if defined(CONSOLE_ENABLE) && defined(DEBUG_EEPROM_OUTPUT)
@@ -89,6 +99,11 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
uint8_t * read_buf = (uint8_t *)buf;
uintptr_t target_addr = (uintptr_t)addr;
+#if defined(EXTERNAL_EEPROM_WP_PIN)
+ setPinOutput(EXTERNAL_EEPROM_WP_PIN);
+ writePin(EXTERNAL_EEPROM_WP_PIN, 0);
+#endif
+
while (len > 0) {
uintptr_t page_offset = target_addr % EXTERNAL_EEPROM_PAGE_SIZE;
int write_length = EXTERNAL_EEPROM_PAGE_SIZE - page_offset;
@@ -116,4 +131,10 @@ void eeprom_write_block(const void *buf, void *addr, size_t len) {
target_addr += write_length;
len -= write_length;
}
+
+#if defined(EXTERNAL_EEPROM_WP_PIN)
+ /* We are setting the WP pin to high in a way that requires at least two bit-flips to change back to 0 */
+ writePin(EXTERNAL_EEPROM_WP_PIN, 1);
+ setPinInputHigh(EXTERNAL_EEPROM_WP_PIN);
+#endif
}
diff --git a/drivers/eeprom/eeprom_stm32_L0_L1.c b/drivers/eeprom/eeprom_stm32_L0_L1.c
deleted file mode 100644
index ed26cc7145..0000000000
--- a/drivers/eeprom/eeprom_stm32_L0_L1.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/* Copyright 2020 Nick Brassel (tzarc)
- *
- * 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 <stdint.h>
-#include <string.h>
-
-#include <hal.h>
-#include "eeprom_driver.h"
-#include "eeprom_stm32_L0_L1.h"
-
-#define EEPROM_BASE_ADDR 0x08080000
-#define EEPROM_ADDR(offset) (EEPROM_BASE_ADDR + (offset))
-#define EEPROM_PTR(offset) ((__IO uint8_t *)EEPROM_ADDR(offset))
-#define EEPROM_BYTE(location, offset) (*(EEPROM_PTR(((uint32_t)location) + ((uint32_t)offset))))
-
-#define BUFFER_BYTE(buffer, offset) (*(((uint8_t *)buffer) + offset))
-
-#define FLASH_PEKEY1 0x89ABCDEF
-#define FLASH_PEKEY2 0x02030405
-
-static inline void STM32_L0_L1_EEPROM_WaitNotBusy(void) {
- while (FLASH->SR & FLASH_SR_BSY) {
- __WFI();
- }
-}
-
-static inline void STM32_L0_L1_EEPROM_Unlock(void) {
- STM32_L0_L1_EEPROM_WaitNotBusy();
- if (FLASH->PECR & FLASH_PECR_PELOCK) {
- FLASH->PEKEYR = FLASH_PEKEY1;
- FLASH->PEKEYR = FLASH_PEKEY2;
- }
-}
-
-static inline void STM32_L0_L1_EEPROM_Lock(void) {
- STM32_L0_L1_EEPROM_WaitNotBusy();
- FLASH->PECR |= FLASH_PECR_PELOCK;
-}
-
-void eeprom_driver_init(void) {}
-
-void eeprom_driver_erase(void) {
- STM32_L0_L1_EEPROM_Unlock();
-
- for (size_t offset = 0; offset < STM32_ONBOARD_EEPROM_SIZE; offset += sizeof(uint32_t)) {
- FLASH->PECR |= FLASH_PECR_ERASE | FLASH_PECR_DATA;
-
- *(__IO uint32_t *)EEPROM_ADDR(offset) = (uint32_t)0;
-
- STM32_L0_L1_EEPROM_WaitNotBusy();
- FLASH->PECR &= ~(FLASH_PECR_ERASE | FLASH_PECR_DATA);
- }
-
- STM32_L0_L1_EEPROM_Lock();
-}
-
-void eeprom_read_block(void *buf, const void *addr, size_t len) {
- for (size_t offset = 0; offset < len; ++offset) {
- // Drop out if we've hit the limit of the EEPROM
- if ((((uint32_t)addr) + offset) >= STM32_ONBOARD_EEPROM_SIZE) {
- break;
- }
-
- STM32_L0_L1_EEPROM_WaitNotBusy();
- BUFFER_BYTE(buf, offset) = EEPROM_BYTE(addr, offset);
- }
-}
-
-void eeprom_write_block(const void *buf, void *addr, size_t len) {
- STM32_L0_L1_EEPROM_Unlock();
-
- for (size_t offset = 0; offset < len; ++offset) {
- // Drop out if we've hit the limit of the EEPROM
- if ((((uint32_t)addr) + offset) >= STM32_ONBOARD_EEPROM_SIZE) {
- break;
- }
-
- STM32_L0_L1_EEPROM_WaitNotBusy();
- EEPROM_BYTE(addr, offset) = BUFFER_BYTE(buf, offset);
- }
-
- STM32_L0_L1_EEPROM_Lock();
-}
diff --git a/drivers/eeprom/eeprom_stm32_L0_L1.h b/drivers/eeprom/eeprom_stm32_L0_L1.h
deleted file mode 100644
index a35defca8b..0000000000
--- a/drivers/eeprom/eeprom_stm32_L0_L1.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Copyright 2020 Nick Brassel (tzarc)
- *
- * 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/>.
- */
-
-#pragma once
-
-/*
- The size used by the STM32 L0/L1 EEPROM driver.
-*/
-#ifndef STM32_ONBOARD_EEPROM_SIZE
-# ifdef VIA_ENABLE
-# define STM32_ONBOARD_EEPROM_SIZE 1024
-# else
-# include "eeconfig.h"
-# define STM32_ONBOARD_EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4) // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO and EEPROM page sizing
-# endif
-#endif
-
-#if STM32_ONBOARD_EEPROM_SIZE > 128
-# pragma message("Please note: resetting EEPROM using an STM32L0/L1 device takes up to 1 second for every 1kB of internal EEPROM used.")
-#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-18 16:09:44 +0000