42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/*
|
|
* Copyright (c) 2016 Piotr Mienkowski
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
/** @file
|
|
* @brief System module to support early Atmel SAM E70 MCU configuration
|
|
*/
|
|
|
|
#include <device.h>
|
|
#include <init.h>
|
|
#include <soc.h>
|
|
#include <arch/cpu.h>
|
|
|
|
/**
|
|
* @brief Perform SoC configuration at boot.
|
|
*
|
|
* This should be run early during the boot process but after basic hardware
|
|
* initialization is done.
|
|
*
|
|
* @return 0
|
|
*/
|
|
static int atmel_same70_config(struct device *dev)
|
|
{
|
|
#ifdef CONFIG_SOC_ATMEL_SAME70_DISABLE_ERASE_PIN
|
|
/* Disable ERASE function on PB12 pin, this is controlled by Bus Matrix */
|
|
MATRIX->CCFG_SYSIO |= CCFG_SYSIO_SYSIO12;
|
|
#endif
|
|
|
|
/* In Cortex-M based SoCs JTAG interface can be used to perform
|
|
* IEEE1149.1 JTAG Boundary scan only. It can not be used as a debug
|
|
* interface therefore there is no harm done by disabling the JTAG TDI
|
|
* pin by default.
|
|
*/
|
|
/* Disable TDI function on PB4 pin, this is controlled by Bus Matrix */
|
|
MATRIX->CCFG_SYSIO |= CCFG_SYSIO_SYSIO4;
|
|
|
|
return 0;
|
|
}
|
|
|
|
SYS_INIT(atmel_same70_config, PRE_KERNEL_1, 1);
|