nuttx/boards/arm/imxrt/imxrt1064-evk/src/imxrt_boot.c

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2021-04-06 21:19:41 +02:00
/****************************************************************************
* boards/arm/imxrt/imxrt1064-evk/src/imxrt_boot.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
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*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "imxrt_start.h"
#include "imxrt1064-evk.h"
#include "arm_arch.h"
#include "imxrt_flexspi_nor_boot.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: imxrt_ocram_initialize
*
* Description:
* Called off reset vector to reconfigure the flexRAM
* and finish the FLASH to RAM Copy.
*
****************************************************************************/
void imxrt_ocram_initialize(void)
{
const uint32_t *src;
uint32_t *dest;
uint32_t regval;
/* Reallocate 128K of Flex RAM from ITCM to OCRAM
* Final Configuration is
* 128 DTCM
*
* 128 FlexRAM OCRAM (202C:0000-202D:ffff)
* 256 FlexRAM OCRAM (2028:0000-202B:ffff)
* 512 System OCRAM2 (2020:0000-2027:ffff)
* */
putreg32(0xaa555555, IMXRT_IOMUXC_GPR_GPR17);
regval = getreg32(IMXRT_IOMUXC_GPR_GPR16);
putreg32(regval | GPR_GPR16_FLEXRAM_BANK_CFG_SELF, IMXRT_IOMUXC_GPR_GPR16);
src = (uint32_t *) (LOCATE_IN_SRC(g_boot_data.start) + g_boot_data.size);
dest = (uint32_t *) (g_boot_data.start + g_boot_data.size);
while (dest < (uint32_t *) &_etext)
{
*dest++ = *src++;
}
}
/****************************************************************************
* Name: imxrt_boardinitialize
*
* Description:
* All i.MX RT architectures must provide the following entry point. This
* entry point is called early in the initialization -- after clocking and
* memory have been configured but before caches have been enabled and
* before any devices have been initialized.
*
****************************************************************************/
void imxrt_boardinitialize(void)
{
/* Configure on-board LEDs if LED support has been selected. */
#ifdef CONFIG_ARCH_LEDS
imxrt_autoled_initialize();
#endif
}
/****************************************************************************
* Name: board_late_initialize
*
* Description:
* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
* initialization call will be performed in the boot-up sequence to a
* function called board_late_initialize(). board_late_initialize() will
* be called immediately after up_intitialize() is called and just before
* the initial application is started. This additional initialization
* phase may be used, for example, to initialize board-specific device
* drivers.
*
****************************************************************************/
#ifdef CONFIG_BOARD_LATE_INITIALIZE
void board_late_initialize(void)
{
/* Perform board initialization */
imxrt_bringup();
}
#endif /* CONFIG_BOARD_LATE_INITIALIZE */