135 lines
4.7 KiB
C
135 lines
4.7 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* 4G Systems MTX-1 board setup.
|
|
*
|
|
* Copyright 2003, 2008 MontaVista Software Inc.
|
|
* Author: MontaVista Software, Inc. <source@mvista.com>
|
|
* Bruno Randolf <bruno.randolf@4g-systems.biz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
|
|
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
|
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/gpio.h>
|
|
#include <linux/init.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/pm.h>
|
|
|
|
#include <asm/reboot.h>
|
|
#include <asm/mach-au1x00/au1000.h>
|
|
|
|
#include <prom.h>
|
|
|
|
char irq_tab_alchemy[][5] __initdata = {
|
|
[0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */
|
|
[1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */
|
|
[2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */
|
|
[3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */
|
|
[4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */
|
|
[5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */
|
|
[6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */
|
|
[7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */
|
|
};
|
|
|
|
extern int (*board_pci_idsel)(unsigned int devsel, int assert);
|
|
int mtx1_pci_idsel(unsigned int devsel, int assert);
|
|
|
|
static void mtx1_reset(char *c)
|
|
{
|
|
/* Jump to the reset vector */
|
|
__asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
|
|
}
|
|
|
|
static void mtx1_power_off(void)
|
|
{
|
|
while (1)
|
|
asm volatile (
|
|
" .set mips32 \n"
|
|
" wait \n"
|
|
" .set mips0 \n");
|
|
}
|
|
|
|
void __init board_setup(void)
|
|
{
|
|
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
|
|
/* Enable USB power switch */
|
|
alchemy_gpio_direction_output(204, 0);
|
|
#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
|
|
|
|
#ifdef CONFIG_PCI
|
|
#if defined(__MIPSEB__)
|
|
au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG);
|
|
#else
|
|
au_writel(0xf, Au1500_PCI_CFG);
|
|
#endif
|
|
board_pci_idsel = mtx1_pci_idsel;
|
|
#endif
|
|
|
|
/* Initialize sys_pinfunc */
|
|
au_writel(SYS_PF_NI2, SYS_PINFUNC);
|
|
|
|
/* Initialize GPIO */
|
|
au_writel(~0, KSEG1ADDR(AU1000_SYS_PHYS_ADDR) + SYS_TRIOUTCLR);
|
|
alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */
|
|
alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */
|
|
alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */
|
|
alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */
|
|
|
|
/* Enable LED and set it to green */
|
|
alchemy_gpio_direction_output(211, 1); /* green on */
|
|
alchemy_gpio_direction_output(212, 0); /* red off */
|
|
|
|
pm_power_off = mtx1_power_off;
|
|
_machine_halt = mtx1_power_off;
|
|
_machine_restart = mtx1_reset;
|
|
|
|
printk(KERN_INFO "4G Systems MTX-1 Board\n");
|
|
}
|
|
|
|
int
|
|
mtx1_pci_idsel(unsigned int devsel, int assert)
|
|
{
|
|
/* This function is only necessary to support a proprietary Cardbus
|
|
* adapter on the mtx-1 "singleboard" variant. It triggers a custom
|
|
* logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals.
|
|
*/
|
|
if (assert && devsel != 0)
|
|
/* Suppress signal to Cardbus */
|
|
alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */
|
|
else
|
|
alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */
|
|
|
|
udelay(1);
|
|
return 1;
|
|
}
|
|
|
|
static int __init mtx1_init_irq(void)
|
|
{
|
|
irq_set_irq_type(AU1500_GPIO204_INT, IRQF_TRIGGER_HIGH);
|
|
irq_set_irq_type(AU1500_GPIO201_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO202_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO203_INT, IRQF_TRIGGER_LOW);
|
|
irq_set_irq_type(AU1500_GPIO205_INT, IRQF_TRIGGER_LOW);
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(mtx1_init_irq);
|