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xianfeng |
/*
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*
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* BRIEF MODULE DESCRIPTION
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* 4G Systems MTX-1 board setup.
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*
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* Copyright 2003 MontaVista Software Inc.
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* Author: MontaVista Software, Inc.
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* ppopov@mvista.com or source@mvista.com
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* Bruno Randolf <bruno.randolf@4g-systems.biz>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* 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
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY 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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ioport.h>
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#include <linux/mm.h>
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#include <linux/console.h>
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#include <linux/delay.h>
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#include <asm/cpu.h>
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#include <asm/bootinfo.h>
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#include <asm/irq.h>
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#include <asm/mipsregs.h>
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#include <asm/reboot.h>
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#include <asm/pgtable.h>
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#include <asm/mach-au1x00/au1000.h>
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extern int (*board_pci_idsel)(unsigned int devsel, int assert);
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int mtx1_pci_idsel(unsigned int devsel, int assert);
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void board_reset(void)
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{
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/* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
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au_writel(0x00000000, 0xAE00001C);
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}
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void __init board_setup(void)
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{
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#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
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// enable USB power switch
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au_writel( au_readl(GPIO2_DIR) | 0x10, GPIO2_DIR );
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au_writel( 0x100000, GPIO2_OUTPUT );
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#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
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#ifdef CONFIG_PCI
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#if defined(__MIPSEB__)
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au_writel(0xf | (2<<6) | (1<<4), Au1500_PCI_CFG);
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#else
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au_writel(0xf, Au1500_PCI_CFG);
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#endif
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#endif
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// initialize sys_pinfunc:
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au_writel( SYS_PF_NI2, SYS_PINFUNC );
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// initialize GPIO
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au_writel( 0xFFFFFFFF, SYS_TRIOUTCLR );
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au_writel( 0x00000001, SYS_OUTPUTCLR ); // set M66EN (PCI 66MHz) to OFF
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au_writel( 0x00000008, SYS_OUTPUTSET ); // set PCI CLKRUN# to OFF
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au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
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au_writel( 0x00000020, SYS_OUTPUTCLR ); // set eth PHY TX_ER to OFF
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// enable LED and set it to green
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au_writel( au_readl(GPIO2_DIR) | 0x1800, GPIO2_DIR );
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au_writel( 0x18000800, GPIO2_OUTPUT );
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board_pci_idsel = mtx1_pci_idsel;
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printk("4G Systems MTX-1 Board\n");
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}
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int
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mtx1_pci_idsel(unsigned int devsel, int assert)
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{
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#define MTX_IDSEL_ONLY_0_AND_3 0
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#if MTX_IDSEL_ONLY_0_AND_3
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if (devsel != 0 && devsel != 3) {
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printk("*** not 0 or 3\n");
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return 0;
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}
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#endif
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if (assert && devsel != 0) {
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// supress signal to cardbus
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au_writel( 0x00000002, SYS_OUTPUTCLR ); // set EXT_IO3 OFF
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}
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else {
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au_writel( 0x00000002, SYS_OUTPUTSET ); // set EXT_IO3 ON
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}
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au_sync_udelay(1);
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return 1;
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}
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