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/*-
* Copyright (c) 2006 M. Warner Losh. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software is derived from software provide by Kwikbyte who specifically
* disclaimed copyright on the code.
*
* $FreeBSD: release/9.1.0/sys/boot/arm/at91/libat91/emac_init.c 172952 2007-10-25 07:05:38Z imp $
*/
/******************************************************************************
*
* Filename: emac.c
*
* Instantiation of routines for MAC/ethernet functions supporting tftp.
*
* Revision information:
*
* 28AUG2004 kb_admin initial creation
* 08JAN2005 kb_admin added tftp download
* also adapted from external sources
*
* BEGIN_KBDD_BLOCK
* No warranty, expressed or implied, is included with this software. It is
* provided "AS IS" and no warranty of any kind including statutory or aspects
* relating to merchantability or fitness for any purpose is provided. All
* intellectual property rights of others is maintained with the respective
* owners. This software is not copyrighted and is intended for reference
* only.
* END_BLOCK
******************************************************************************/
#include "at91rm9200.h"
#include "at91rm9200_lowlevel.h"
#include "emac.h"
#include "lib.h"
/* ****************************** GLOBALS *************************************/
unsigned localMACSet;
unsigned char localMACAddr[6];
unsigned localMAClow, localMAChigh;
/* ********************** PRIVATE FUNCTIONS/DATA ******************************/
/*
* .KB_C_FN_DEFINITION_START
* void EMAC_SetMACAddress(unsigned low_address, unsigned high_address)
* This global function sets the MAC address. low_address is the first
* four bytes while high_address is the last 2 bytes of the 48-bit value.
* .KB_C_FN_DEFINITION_END
*/
void
EMAC_SetMACAddress(unsigned char mac[6])
{
AT91PS_PMC pPMC = AT91C_BASE_PMC;
AT91PS_EMAC pEmac = AT91C_BASE_EMAC;
/* enable the peripheral clock before using EMAC */
pPMC->PMC_PCER = ((unsigned) 1 << AT91C_ID_EMAC);
memcpy(localMACAddr, mac, 6);
localMAClow = (mac[3] << 24) | (mac[2] << 16) | (mac[1] << 8) | mac[0];
localMAChigh = (mac[5] << 8) | mac[4];
localMACSet = 1;
AT91C_BASE_PMC->PMC_PCER = 1u << AT91C_ID_EMAC;
AT91C_BASE_PIOA->PIO_ASR =
AT91C_PA14_ERXER | AT91C_PA12_ERX0 | AT91C_PA13_ERX1 |
AT91C_PA8_ETXEN | AT91C_PA16_EMDIO | AT91C_PA9_ETX0 |
AT91C_PA10_ETX1 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA15_EMDC |
AT91C_PA7_ETXCK_EREFCK;
AT91C_BASE_PIOA->PIO_PDR =
AT91C_PA14_ERXER | AT91C_PA12_ERX0 | AT91C_PA13_ERX1 |
AT91C_PA8_ETXEN | AT91C_PA16_EMDIO | AT91C_PA9_ETX0 |
AT91C_PA10_ETX1 | AT91C_PA11_ECRS_ECRSDV | AT91C_PA15_EMDC |
AT91C_PA7_ETXCK_EREFCK;
#if defined(BOOT_KB920X) | defined(BOOT_BWCT) /* Really !RMII */
AT91C_BASE_PIOB->PIO_BSR =
AT91C_PB12_ETX2 | AT91C_PB13_ETX3 | AT91C_PB14_ETXER |
AT91C_PB15_ERX2 | AT91C_PB16_ERX3 | AT91C_PB17_ERXDV |
AT91C_PB18_ECOL | AT91C_PB19_ERXCK;
AT91C_BASE_PIOB->PIO_PDR =
AT91C_PB12_ETX2 | AT91C_PB13_ETX3 | AT91C_PB14_ETXER |
AT91C_PB15_ERX2 | AT91C_PB16_ERX3 | AT91C_PB17_ERXDV |
AT91C_PB18_ECOL | AT91C_PB19_ERXCK;
#endif
pEmac->EMAC_CTL = 0;
pEmac->EMAC_CFG = (pEmac->EMAC_CFG & ~(AT91C_EMAC_CLK)) |
#ifdef BOOT_TSC
AT91C_EMAC_RMII |
#endif
AT91C_EMAC_CLK_HCLK_32 | AT91C_EMAC_CAF;
// the sequence write EMAC_SA1L and write EMAC_SA1H must be respected
pEmac->EMAC_SA1L = localMAClow;
pEmac->EMAC_SA1H = localMAChigh;
}