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Diffstat (limited to 'nuttx/arch/arm/src/stm32/stm32_flash.c')
-rw-r--r--nuttx/arch/arm/src/stm32/stm32_flash.c256
1 files changed, 0 insertions, 256 deletions
diff --git a/nuttx/arch/arm/src/stm32/stm32_flash.c b/nuttx/arch/arm/src/stm32/stm32_flash.c
deleted file mode 100644
index 20b0cfe10..000000000
--- a/nuttx/arch/arm/src/stm32/stm32_flash.c
+++ /dev/null
@@ -1,256 +0,0 @@
-/************************************************************************************
- * arch/arm/src/stm32/stm32_flash.c
- *
- * Copyright (C) 2011 Uros Platise. All rights reserved.
- * Author: Uros Platise <uros.platise@isotel.eu>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ************************************************************************************/
-
-/* Provides standard flash access functions, to be used by the flash mtd driver.
- * The interface is defined in the include/nuttx/progmem.h
- *
- * Requirements during write/erase operations on FLASH:
- * - HSI must be ON.
- * - Low Power Modes are not permitted during write/erase
- */
-
-/************************************************************************************
- * Included Files
- ************************************************************************************/
-
-#include <nuttx/config.h>
-#include <nuttx/arch.h>
-#include <errno.h>
-
-#include "stm32_flash.h"
-#include "stm32_rcc.h"
-#include "stm32_waste.h"
-
-#include "up_arch.h"
-
-/* Only for the STM32F10xx family for now */
-
-#ifdef CONFIG_STM32_STM32F10XX
-
-/************************************************************************************
- * Pre-processor Definitions
- ************************************************************************************/
-
-#define FLASH_KEY1 0x45670123
-#define FLASH_KEY2 0xCDEF89AB
-
-/************************************************************************************
- * Private Functions
- ************************************************************************************/
-
-void stm32_flash_unlock(void)
-{
- while (getreg32(STM32_FLASH_SR) & FLASH_SR_BSY)
- {
- up_waste();
- }
-
- if (getreg32(STM32_FLASH_CR) & FLASH_CR_LOCK)
- {
- /* Unlock sequence */
-
- putreg32(FLASH_KEY1, STM32_FLASH_KEYR);
- putreg32(FLASH_KEY2, STM32_FLASH_KEYR);
- }
-}
-
-void stm32_flash_lock(void)
-{
- modifyreg16(STM32_FLASH_CR, 0, FLASH_CR_LOCK);
-}
-
-/************************************************************************************
- * Public Functions
- ************************************************************************************/
-
-uint16_t up_progmem_npages(void)
-{
- return STM32_FLASH_NPAGES;
-}
-
-bool up_progmem_isuniform(void)
-{
- return true;
-}
-
-uint16_t up_progmem_pagesize(uint16_t page)
-{
- return STM32_FLASH_PAGESIZE;
-}
-
-int up_progmem_getpage(uint32_t addr)
-{
- if (addr >= STM32_FLASH_BASE)
- {
- addr -= STM32_FLASH_BASE;
- }
-
- if (addr >= STM32_FLASH_SIZE)
- {
- return -EFAULT;
- }
-
- return addr / STM32_FLASH_PAGESIZE;
-}
-
-int up_progmem_erasepage(uint16_t page)
-{
- uint32_t addr;
- uint16_t count;
-
- if (page >= STM32_FLASH_NPAGES)
- {
- return -EFAULT;
- }
-
- /* Get flash ready and begin erasing single page */
-
- if (!(getreg32(STM32_RCC_CR) & RCC_CR_HSION))
- {
- return -EPERM;
- }
-
- stm32_flash_unlock();
-
- modifyreg32(STM32_FLASH_CR, 0, FLASH_CR_PER);
- putreg32(page * STM32_FLASH_PAGESIZE, STM32_FLASH_AR);
- modifyreg32(STM32_FLASH_CR, 0, FLASH_CR_STRT);
-
- while(getreg32(STM32_FLASH_SR) & FLASH_SR_BSY) up_waste();
-
- modifyreg32(STM32_FLASH_CR, FLASH_CR_PER, 0);
-
- /* Verify */
-
- for (addr = page * STM32_FLASH_PAGESIZE + STM32_FLASH_BASE, count = STM32_FLASH_PAGESIZE;
- count; count-=4, addr += 4)
- {
- if (getreg32(addr) != 0xffffffff)
- {
- return -EIO;
- }
- }
-
- return STM32_FLASH_PAGESIZE;
-}
-
-int up_progmem_ispageerased(uint16_t page)
-{
- uint32_t addr;
- uint16_t count;
- uint16_t bwritten = 0;
-
- if (page >= STM32_FLASH_NPAGES)
- {
- return -EFAULT;
- }
-
- /* Verify */
-
- for (addr = page * STM32_FLASH_PAGESIZE + STM32_FLASH_BASE, count = STM32_FLASH_PAGESIZE;
- count; count--, addr++)
- {
- if (getreg8(addr) != 0xff)
- {
- bwritten++;
- }
- }
-
- return bwritten;
-}
-
-int up_progmem_write(uint32_t addr, const void *buf, size_t count)
-{
- uint16_t *hword = (uint16_t *)buf;
- size_t written = count;
-
- /* STM32 requires half-word access */
-
- if (count & 1)
- {
- return -EINVAL;
- }
-
- /* Check for valid address range */
-
- if (addr >= STM32_FLASH_BASE)
- {
- addr -= STM32_FLASH_BASE;
- }
-
- if ((addr+count) >= STM32_FLASH_SIZE)
- {
- return -EFAULT;
- }
-
- /* Get flash ready and begin flashing */
-
- if (!(getreg32(STM32_RCC_CR) & RCC_CR_HSION))
- {
- return -EPERM;
- }
-
- stm32_flash_unlock();
-
- modifyreg32(STM32_FLASH_CR, 0, FLASH_CR_PG);
-
- for (addr += STM32_FLASH_BASE; count; count-=2, hword++, addr+=2)
- {
- /* Write half-word and wait to complete */
-
- putreg16(*hword, addr);
-
- while(getreg32(STM32_FLASH_SR) & FLASH_SR_BSY) up_waste();
-
- /* Verify */
-
- if (getreg32(STM32_FLASH_SR) & FLASH_SR_WRPRT_ERR)
- {
- modifyreg32(STM32_FLASH_CR, FLASH_CR_PG, 0);
- return -EROFS;
- }
-
- if (getreg16(addr) != *hword)
- {
- modifyreg32(STM32_FLASH_CR, FLASH_CR_PG, 0);
- return -EIO;
- }
- }
-
- modifyreg32(STM32_FLASH_CR, FLASH_CR_PG, 0);
- return written;
-}
-
-#endif /* CONFIG_STM32_STM32F10XX */
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