mirror of
https://github.com/zephyrproject-rtos/zephyr
synced 2025-09-04 22:13:16 +00:00
ac74d8b652
Replace the existing Apache 2.0 boilerplate header with an SPDX tag throughout the zephyr code tree. This patch was generated via a script run over the master branch. Also updated doc/porting/application.rst that had a dependency on line numbers in a literal include. Manually updated subsys/logging/sys_log.c that had a malformed header in the original file. Also cleanup several cases that already had a SPDX tag and we either got a duplicate or missed updating. Jira: ZEP-1457 Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c Signed-off-by: David B. Kinder <david.b.kinder@intel.com> Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
|
|
* Copyright (c) 2016 Linaro Limited
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <logging/sys_log.h>
|
|
#include <kernel.h>
|
|
#include <device.h>
|
|
#include <string.h>
|
|
#include <flash.h>
|
|
#include <errno.h>
|
|
#include <init.h>
|
|
#include <soc.h>
|
|
|
|
#include "fsl_common.h"
|
|
#include "fsl_flash.h"
|
|
|
|
struct flash_priv {
|
|
flash_config_t config;
|
|
};
|
|
|
|
/*
|
|
* Interrupt vectors could be executed from flash hence the need for locking.
|
|
* The underlying MCUX driver takes care of copying the functions to SRAM.
|
|
*
|
|
* For more information, see the application note below on Read-While-Write
|
|
* http://cache.freescale.com/files/32bit/doc/app_note/AN4695.pdf
|
|
*
|
|
*/
|
|
|
|
static int flash_mcux_erase(struct device *dev, off_t offset, size_t len)
|
|
{
|
|
struct flash_priv *priv = dev->driver_data;
|
|
uint32_t addr;
|
|
status_t rc;
|
|
int key;
|
|
|
|
addr = offset + priv->config.PFlashBlockBase;
|
|
|
|
key = irq_lock();
|
|
rc = FLASH_Erase(&priv->config, addr, len, kFLASH_apiEraseKey);
|
|
irq_unlock(key);
|
|
|
|
return (rc == kStatus_Success) ? 0 : -EINVAL;
|
|
}
|
|
|
|
static int flash_mcux_read(struct device *dev, off_t offset,
|
|
void *data, size_t len)
|
|
{
|
|
struct flash_priv *priv = dev->driver_data;
|
|
uint32_t addr;
|
|
|
|
/*
|
|
* The MCUX supports different flash chips whose valid ranges are
|
|
* hidden below the API: until the API export these ranges, we can not
|
|
* do any generic validation
|
|
*/
|
|
addr = offset + priv->config.PFlashBlockBase;
|
|
|
|
memcpy(data, (void *) addr, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int flash_mcux_write(struct device *dev, off_t offset,
|
|
const void *data, size_t len)
|
|
{
|
|
struct flash_priv *priv = dev->driver_data;
|
|
uint32_t addr;
|
|
status_t rc;
|
|
int key;
|
|
|
|
addr = offset + priv->config.PFlashBlockBase;
|
|
|
|
key = irq_lock();
|
|
rc = FLASH_Program(&priv->config, addr, (uint32_t *) data, len);
|
|
irq_unlock(key);
|
|
|
|
return (rc == kStatus_Success) ? 0 : -EINVAL;
|
|
}
|
|
|
|
static int flash_mcux_write_protection(struct device *dev, bool enable)
|
|
{
|
|
return -EIO;
|
|
}
|
|
|
|
static struct flash_priv flash_data;
|
|
|
|
static const struct flash_driver_api flash_mcux_api = {
|
|
.write_protection = flash_mcux_write_protection,
|
|
.erase = flash_mcux_erase,
|
|
.write = flash_mcux_write,
|
|
.read = flash_mcux_read,
|
|
};
|
|
|
|
static int flash_mcux_init(struct device *dev)
|
|
{
|
|
struct flash_priv *priv = dev->driver_data;
|
|
status_t rc;
|
|
|
|
rc = FLASH_Init(&priv->config);
|
|
|
|
return (rc == kStatus_Success) ? 0 : -EIO;
|
|
}
|
|
|
|
DEVICE_AND_API_INIT(flash_mcux, CONFIG_SOC_FLASH_MCUX_DEV_NAME,
|
|
flash_mcux_init, &flash_data, NULL, POST_KERNEL,
|
|
CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &flash_mcux_api);
|
|
|