108 lines
4.4 KiB
C
108 lines
4.4 KiB
C
/************************************************************************************
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* configs/mx1ads/src/up_boot.c
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* arch/arm/src/board/up_boot.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "up_arch.h"
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#include "imx_gpio.h"
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/************************************************************************************
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* Definitions
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************************************************************************************/
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/************************************************************************************
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* Private Functions
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************************************************************************************/
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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/************************************************************************************
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* Name: imx_boardinitialize
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*
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* Description:
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* All i.MX architectures must provide the following entry point. This entry point
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* is called early in the intitialization -- after all memory has been configured
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* and mapped but before any devices have been initialized.
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************************************************************************************/
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void imx_boardinitialize(void)
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{
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uint32_t regval;
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putreg32(0x000003ab, IMX_SC_GPCR); /* I/O pad driving strength */
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putreg32(IMX_MPCTL0_VALUE, IMX_PLL_MPCTL0);
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putreg32(IMX_SPCTL0_VALUE, IMX_PLL_SPCTL0);
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regval = (CSCR_CLKOSEL_FCLK | /* Output FCLK on CLK0 */
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(IMX_CSCR_USBDIV << PLL_CSCR_USBDIV_SHIFT) | /* USB divider */
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CSCR_SDCNT_4thEDGE | /* Shutdown on 4th edge */
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(IMX_CSCR_BCLKDIV << PLL_CSCR_BCLKDIV_SHIFT) | /* Bclock divider */
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PLL_CSCR_SPEN | PLL_CSCR_MPEN); /* Enable MUC and System PLL */
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putreg32(regval, IMX_PLL_CSCR);
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/* Use these new frequencies now */
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putreg32(IMX_PLL_CSCR, regval | (PLL_CSCR_MPLLRESTART|PLL_CSCR_SPLLRESTART));
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/* Setup peripheral clocking */
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putreg32(IMX_PCDR_VALUE, IMX_PLL_PCDR);
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/* Configure CS4 for cs8900 Ethernet */
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#ifdef CONFIG_NET
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putreg32(0x00000f00, IMX_EIM_CS4H);
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putreg32(0x00001501, IMX_EIM_CS4L);
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imxgpio_configprimary(GPIOA, 21);
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imxgpio_configprimary(GPIOA, 22);
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regval = getreg32(IMX_CS4_VSECTION + 0x0c);
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regval = getreg32(IMX_CS4_VSECTION + 0x0c);
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#endif
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}
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