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