1/*-
2 * Copyright (c) 2006 M. Warner Losh.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * This software is derived from software provide by Kwikbyte who specifically
25 * disclaimed copyright on the code.
26 *
27 * $FreeBSD$
28 */
29
30/******************************************************************************
31 *
32 * Filename: emac.c
33 *
34 * Instantiation of routines for MAC/ethernet functions supporting tftp.
35 *
36 * Revision information:
37 *
38 * 28AUG2004	kb_admin	initial creation
39 * 08JAN2005	kb_admin	added tftp download
40 *					also adapted from external sources
41 *
42 * BEGIN_KBDD_BLOCK
43 * No warranty, expressed or implied, is included with this software.  It is
44 * provided "AS IS" and no warranty of any kind including statutory or aspects
45 * relating to merchantability or fitness for any purpose is provided.  All
46 * intellectual property rights of others is maintained with the respective
47 * owners.  This software is not copyrighted and is intended for reference
48 * only.
49 * END_BLOCK
50 ******************************************************************************/
51
52#include "at91rm9200.h"
53#include "at91rm9200_lowlevel.h"
54#include "emac.h"
55#include "lib.h"
56
57/* ****************************** GLOBALS *************************************/
58
59unsigned localMACSet;
60unsigned char localMACAddr[6];
61unsigned localMAClow, localMAChigh;
62
63/* ********************** PRIVATE FUNCTIONS/DATA ******************************/
64
65/*
66 * .KB_C_FN_DEFINITION_START
67 * void EMAC_SetMACAddress(unsigned low_address, unsigned high_address)
68 *  This global function sets the MAC address.  low_address is the first
69 * four bytes while high_address is the last 2 bytes of the 48-bit value.
70 * .KB_C_FN_DEFINITION_END
71 */
72void
73EMAC_SetMACAddress(unsigned char mac[6])
74{
75	AT91PS_PMC	pPMC = AT91C_BASE_PMC;
76	AT91PS_EMAC	pEmac = AT91C_BASE_EMAC;
77
78	/* enable the peripheral clock before using EMAC */
79	pPMC->PMC_PCER = ((unsigned) 1 << AT91C_ID_EMAC);
80
81	memcpy(localMACAddr, mac, 6);
82	localMAClow = (mac[3] << 24) | (mac[2] << 16) | (mac[1] << 8) | mac[0];
83	localMAChigh = (mac[5] << 8) | mac[4];
84	localMACSet = 1;
85
86	AT91C_BASE_PMC->PMC_PCER = 1u << AT91C_ID_EMAC;
87	AT91C_BASE_PIOA->PIO_ASR =
88	  AT91C_PIO_PA14 | AT91C_PIO_PA12 | AT91C_PIO_PA13 |
89	  AT91C_PIO_PA8 | AT91C_PIO_PA16 | AT91C_PIO_PA9 |
90	  AT91C_PIO_PA10 | AT91C_PIO_PA11 | AT91C_PIO_PA15 |
91	  AT91C_PIO_PA7;
92	AT91C_BASE_PIOA->PIO_PDR =
93	  AT91C_PIO_PA14 | AT91C_PIO_PA12 | AT91C_PIO_PA13 |
94	  AT91C_PIO_PA8 | AT91C_PIO_PA16 | AT91C_PIO_PA9 |
95	  AT91C_PIO_PA10 | AT91C_PIO_PA11 | AT91C_PIO_PA15 |
96	  AT91C_PIO_PA7;
97#if defined(BOOT_KB920X) | defined(BOOT_BWCT)	/* Really !RMII */
98	AT91C_BASE_PIOB->PIO_BSR =
99	  AT91C_PIO_PB12 | AT91C_PIO_PB13 | AT91C_PIO_PB14 |
100	  AT91C_PIO_PB15 | AT91C_PIO_PB16 | AT91C_PIO_PB17 |
101	  AT91C_PIO_PB18 | AT91C_PIO_PB19;
102	AT91C_BASE_PIOB->PIO_PDR =
103	  AT91C_PIO_PB12 | AT91C_PIO_PB13 | AT91C_PIO_PB14 |
104	  AT91C_PIO_PB15 | AT91C_PIO_PB16 | AT91C_PIO_PB17 |
105	  AT91C_PIO_PB18 | AT91C_PIO_PB19;
106#endif
107	pEmac->EMAC_CTL  = 0;
108
109	pEmac->EMAC_CFG  = (pEmac->EMAC_CFG & ~(AT91C_EMAC_CLK)) |
110#ifdef BOOT_TSC
111	    AT91C_EMAC_RMII |
112#endif
113	    AT91C_EMAC_CLK_HCLK_32 | AT91C_EMAC_CAF;
114	// the sequence write EMAC_SA1L and write EMAC_SA1H must be respected
115	pEmac->EMAC_SA1L = localMAClow;
116	pEmac->EMAC_SA1H = localMAChigh;
117}
118