135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
/*
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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, 2008 MontaVista Software Inc.
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* Author: MontaVista Software, Inc. <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/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/pm.h>
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#include <asm/reboot.h>
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#include <asm/mach-au1x00/au1000.h>
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#include <prom.h>
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char irq_tab_alchemy[][5] __initdata = {
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[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
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[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
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[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
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[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
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[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
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[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
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[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
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[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
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};
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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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static void mtx1_reset(char *c)
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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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static void mtx1_power_off(void)
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{
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while (1)
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asm volatile (
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" .set mips32 \n"
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" wait \n"
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" .set mips0 \n");
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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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alchemy_gpio_direction_output(204, 0);
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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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board_pci_idsel = mtx1_pci_idsel;
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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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alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */
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alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */
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alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */
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alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */
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/* Enable LED and set it to green */
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alchemy_gpio_direction_output(211, 1); /* green on */
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alchemy_gpio_direction_output(212, 0); /* red off */
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pm_power_off = mtx1_power_off;
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_machine_halt = mtx1_power_off;
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_machine_restart = mtx1_reset;
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printk(KERN_INFO "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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/* This function is only necessary to support a proprietary Cardbus
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* adapter on the mtx-1 "singleboard" variant. It triggers a custom
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* logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
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*/
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if (assert && devsel != 0)
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/* Suppress signal to Cardbus */
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alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */
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else
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alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */
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udelay(1);
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return 1;
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}
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static int __init mtx1_init_irq(void)
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{
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set_irq_type(AU1500_GPIO204_INT, IRQF_TRIGGER_HIGH);
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set_irq_type(AU1500_GPIO201_INT, IRQF_TRIGGER_LOW);
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set_irq_type(AU1500_GPIO202_INT, IRQF_TRIGGER_LOW);
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set_irq_type(AU1500_GPIO203_INT, IRQF_TRIGGER_LOW);
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set_irq_type(AU1500_GPIO205_INT, IRQF_TRIGGER_LOW);
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return 0;
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}
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arch_initcall(mtx1_init_irq);
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