1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 *	4G Systems MTX-1 board setup.
5 *
6 * Copyright 2003 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 *         	ppopov@mvista.com or source@mvista.com
9 *         Bruno Randolf <bruno.randolf@4g-systems.biz>
10 *
11 *  This program is free software; you can redistribute  it and/or modify it
12 *  under  the terms of  the GNU General  Public License as published by the
13 *  Free Software Foundation;  either version 2 of the  License, or (at your
14 *  option) any later version.
15 *
16 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
17 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
18 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
19 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
20 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
22 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
24 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 *  You should have received a copy of the  GNU General Public License along
28 *  with this program; if not, write  to the Free Software Foundation, Inc.,
29 *  675 Mass Ave, Cambridge, MA 02139, USA.
30 */
31#include <linux/init.h>
32#include <linux/sched.h>
33#include <linux/ioport.h>
34#include <linux/mm.h>
35#include <linux/console.h>
36#include <linux/delay.h>
37
38#include <asm/cpu.h>
39#include <asm/bootinfo.h>
40#include <asm/irq.h>
41#include <asm/mipsregs.h>
42#include <asm/reboot.h>
43#include <asm/pgtable.h>
44#include <asm/mach-au1x00/au1000.h>
45
46extern int (*board_pci_idsel)(unsigned int devsel, int assert);
47int    mtx1_pci_idsel(unsigned int devsel, int assert);
48
49void board_reset (void)
50{
51	/* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
52	au_writel(0x00000000, 0xAE00001C);
53}
54
55void __init board_setup(void)
56{
57#ifdef CONFIG_USB_OHCI
58	// enable USB power switch
59	au_writel( au_readl(GPIO2_DIR) | 0x10, GPIO2_DIR );
60	au_writel( 0x100000, GPIO2_OUTPUT );
61#endif // defined (CONFIG_USB_OHCI)
62
63#ifdef CONFIG_PCI
64#if defined(__MIPSEB__)
65	au_writel(0xf | (2<<6) | (1<<4), Au1500_PCI_CFG);
66#else
67	au_writel(0xf, Au1500_PCI_CFG);
68#endif
69#endif
70
71	// initialize sys_pinfunc:
72	au_writel( SYS_PF_NI2, SYS_PINFUNC );
73
74	// initialize GPIO
75	au_writel( 0xFFFFFFFF, SYS_TRIOUTCLR );
76	au_writel( 0x00000001, SYS_OUTPUTCLR ); // set M66EN (PCI 66MHz) to OFF
77	au_writel( 0x00000008, SYS_OUTPUTSET ); // set PCI CLKRUN# to OFF
78	au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
79	au_writel( 0x00000020, SYS_OUTPUTCLR ); // set eth PHY TX_ER to OFF
80
81	// enable LED and set it to green
82	au_writel( au_readl(GPIO2_DIR) | 0x1800, GPIO2_DIR );
83	au_writel( 0x18000800, GPIO2_OUTPUT );
84
85	board_pci_idsel = mtx1_pci_idsel;
86
87	printk("4G Systems MTX-1 Board\n");
88}
89
90int
91mtx1_pci_idsel(unsigned int devsel, int assert)
92{
93#define MTX_IDSEL_ONLY_0_AND_3 0
94#if MTX_IDSEL_ONLY_0_AND_3
95       if (devsel != 0 && devsel != 3) {
96               printk("*** not 0 or 3\n");
97               return 0;
98       }
99#endif
100
101       if (assert && devsel != 0) {
102               // supress signal to cardbus
103               au_writel( 0x00000002, SYS_OUTPUTCLR ); // set EXT_IO3 OFF
104       }
105       else {
106               au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
107       }
108       au_sync_udelay(1);
109       return 1;
110}
111