118 lines
4.5 KiB
C
118 lines
4.5 KiB
C
/*-
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* Copyright (c) 2006 M. Warner Losh. All rights reserved.
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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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* 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 the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software is derived from software provide by Kwikbyte who specifically
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* disclaimed copyright on the code.
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*
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* $FreeBSD$
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*/
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/******************************************************************************
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*
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* Filename: emac.c
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*
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* Instantiation of routines for MAC/ethernet functions supporting tftp.
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*
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* Revision information:
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*
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* 28AUG2004 kb_admin initial creation
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* 08JAN2005 kb_admin added tftp download
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* also adapted from external sources
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*
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* BEGIN_KBDD_BLOCK
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* No warranty, expressed or implied, is included with this software. It is
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* provided "AS IS" and no warranty of any kind including statutory or aspects
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* relating to merchantability or fitness for any purpose is provided. All
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* intellectual property rights of others is maintained with the respective
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* owners. This software is not copyrighted and is intended for reference
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* only.
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* END_BLOCK
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******************************************************************************/
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#include "at91rm9200.h"
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#include "at91rm9200_lowlevel.h"
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#include "emac.h"
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#include "lib.h"
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/* ****************************** GLOBALS *************************************/
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unsigned localMACSet;
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unsigned char localMACAddr[6];
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unsigned localMAClow, localMAChigh;
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/* ********************** PRIVATE FUNCTIONS/DATA ******************************/
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/*
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* .KB_C_FN_DEFINITION_START
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* void EMAC_SetMACAddress(unsigned low_address, unsigned high_address)
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* This global function sets the MAC address. low_address is the first
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* four bytes while high_address is the last 2 bytes of the 48-bit value.
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* .KB_C_FN_DEFINITION_END
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*/
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void
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EMAC_SetMACAddress(unsigned char mac[6])
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{
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AT91PS_PMC pPMC = AT91C_BASE_PMC;
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AT91PS_EMAC pEmac = AT91C_BASE_EMAC;
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/* enable the peripheral clock before using EMAC */
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pPMC->PMC_PCER = ((unsigned) 1 << AT91C_ID_EMAC);
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memcpy(localMACAddr, mac, 6);
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localMAClow = (mac[2] << 24) | (mac[3] << 16) | (mac[4] << 8) | mac[5];
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localMAChigh = (mac[0] << 8) | mac[1];
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localMACSet = 1;
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AT91C_BASE_PMC->PMC_PCER = 1u << AT91C_ID_EMAC;
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AT91C_BASE_PIOA->PIO_ASR =
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AT91C_PA14_ERXER | AT91C_PA12_ERX0 | AT91C_PA13_ERX1 |
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AT91C_PA8_ETXEN | AT91C_PA16_EMDIO | AT91C_PA9_ETX0 |
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AT91C_PA10_ETX1 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA15_EMDC |
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AT91C_PA7_ETXCK_EREFCK;
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AT91C_BASE_PIOA->PIO_PDR =
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AT91C_PA14_ERXER | AT91C_PA12_ERX0 | AT91C_PA13_ERX1 |
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AT91C_PA8_ETXEN | AT91C_PA16_EMDIO | AT91C_PA9_ETX0 |
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AT91C_PA10_ETX1 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA15_EMDC |
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AT91C_PA7_ETXCK_EREFCK;
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#if defined(BOOT_KB920X) | defined(BOOT_BWCT) /* Really !RMII */
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AT91C_BASE_PIOB->PIO_BSR =
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AT91C_PB12_ETX2 | AT91C_PB13_ETX3 | AT91C_PB14_ETXER |
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AT91C_PB15_ERX2 | AT91C_PB16_ERX3 | AT91C_PB17_ERXDV |
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AT91C_PB18_ECOL | AT91C_PB19_ERXCK;
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AT91C_BASE_PIOB->PIO_PDR =
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AT91C_PB12_ETX2 | AT91C_PB13_ETX3 | AT91C_PB14_ETXER |
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AT91C_PB15_ERX2 | AT91C_PB16_ERX3 | AT91C_PB17_ERXDV |
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AT91C_PB18_ECOL | AT91C_PB19_ERXCK;
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#endif
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pEmac->EMAC_CTL = 0;
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pEmac->EMAC_CFG = (pEmac->EMAC_CFG & ~(AT91C_EMAC_CLK)) |
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#ifdef BOOT_TSC
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AT91C_EMAC_RMII |
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#endif
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AT91C_EMAC_CLK_HCLK_32 | AT91C_EMAC_CAF;
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// the sequence write EMAC_SA1L and write EMAC_SA1H must be respected
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pEmac->EMAC_SA1L = localMAClow;
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pEmac->EMAC_SA1H = localMAChigh;
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}
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