diff options
Diffstat (limited to 'arch/mips/au1000/csb250/board_setup.c')
| -rw-r--r-- | arch/mips/au1000/csb250/board_setup.c | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/arch/mips/au1000/csb250/board_setup.c b/arch/mips/au1000/csb250/board_setup.c deleted file mode 100644 index 348c302..0000000 --- a/arch/mips/au1000/csb250/board_setup.c +++ /dev/null @@ -1,238 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * Cogent CSB250 board setup. - * - * Copyright 2002 Cogent Computer Systems, Inc. - * dan@embeddededge.com - * - * 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/init.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/mm.h> -#include <linux/console.h> -#include <linux/mc146818rtc.h> -#include <linux/delay.h> - -#include <asm/cpu.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/keyboard.h> -#include <asm/mipsregs.h> -#include <asm/reboot.h> -#include <asm/pgtable.h> -#include <asm/au1000.h> -#include <asm/csb250.h> - -extern int (*board_pci_idsel)(unsigned int devsel, int assert); -int csb250_pci_idsel(unsigned int devsel, int assert); - -void __init board_setup(void) -{ - u32 pin_func, pin_val; - u32 sys_freqctrl, sys_clksrc; - - - // set AUX clock to 12MHz * 8 = 96 MHz - au_writel(8, SYS_AUXPLL); - au_writel(0, SYS_PINSTATERD); - udelay(100); - -#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE) - - /* GPIO201 is input for PCMCIA card detect */ - /* GPIO203 is input for PCMCIA interrupt request */ - au_writel(au_readl(GPIO2_DIR) & (u32)(~((1<<1)|(1<<3))), GPIO2_DIR); - - /* zero and disable FREQ2 */ - sys_freqctrl = au_readl(SYS_FREQCTRL0); - sys_freqctrl &= ~0xFFF00000; - au_writel(sys_freqctrl, SYS_FREQCTRL0); - - /* zero and disable USBH/USBD clocks */ - sys_clksrc = au_readl(SYS_CLKSRC); - sys_clksrc &= ~0x00007FE0; - au_writel(sys_clksrc, SYS_CLKSRC); - - sys_freqctrl = au_readl(SYS_FREQCTRL0); - sys_freqctrl &= ~0xFFF00000; - - sys_clksrc = au_readl(SYS_CLKSRC); - sys_clksrc &= ~0x00007FE0; - - // FREQ2 = aux/2 = 48 MHz - sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20)); - au_writel(sys_freqctrl, SYS_FREQCTRL0); - - /* - * Route 48MHz FREQ2 into USB Host and/or Device - */ -#ifdef CONFIG_USB_OHCI - sys_clksrc |= ((4<<12) | (0<<11) | (0<<10)); -#endif -#ifdef CONFIG_AU1X00_USB_DEVICE - sys_clksrc |= ((4<<7) | (0<<6) | (0<<5)); -#endif - au_writel(sys_clksrc, SYS_CLKSRC); - - - pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000); -#ifndef CONFIG_AU1X00_USB_DEVICE - // 2nd USB port is USB host - pin_func |= 0x8000; -#endif - au_writel(pin_func, SYS_PINFUNC); -#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE) - - /* Configure GPIO2....it's used by PCI among other things. - */ - - /* Make everything but GP200 (PCI RST) an input until we get - * the pins set correctly. - */ - au_writel(0x00000001, GPIO2_DIR); - - /* Set the pins used for output. - * A zero bit will leave PCI reset, LEDs off, power up USB, - * IDSEL disabled. - */ - pin_val = ((3 << 30) | (7 << 19) | (1 << 17) | (1 << 16)); - au_writel(pin_val, GPIO2_OUTPUT); - - /* Set the output direction. - */ - pin_val = ((3 << 14) | (7 << 3) | (1 << 1) | (1 << 0)); - au_writel(pin_val, GPIO2_DIR); - -#ifdef CONFIG_PCI - /* Use FREQ1 for the PCI output clock. We use the - * CPU clock of 384 MHz divided by 12 to get 32 MHz PCI. - * If Michael changes the CPU speed, we need to adjust - * that here as well :-). - */ - - /* zero and disable FREQ1 - */ - sys_freqctrl = au_readl(SYS_FREQCTRL0); - sys_freqctrl &= ~0x000ffc00; - au_writel(sys_freqctrl, SYS_FREQCTRL0); - - /* zero and disable PCI clock - */ - sys_clksrc = au_readl(SYS_CLKSRC); - sys_clksrc &= ~0x000f8000; - au_writel(sys_clksrc, SYS_CLKSRC); - - /* Get current values (which really should match above). - */ - sys_freqctrl = au_readl(SYS_FREQCTRL0); - sys_freqctrl &= ~0x000ffc00; - - sys_clksrc = au_readl(SYS_CLKSRC); - sys_clksrc &= ~0x000f8000; - - /* FREQ1 = cpu/12 = 32 MHz - */ - sys_freqctrl |= ((5<<12) | (1<<11) | (0<<10)); - au_writel(sys_freqctrl, SYS_FREQCTRL0); - - /* Just connect the clock without further dividing. - */ - sys_clksrc |= ((3<<17) | (0<<16) | (0<<15)); - au_writel(sys_clksrc, SYS_CLKSRC); - - udelay(1); - - /* Now that clocks should be running, take PCI out of reset. - */ - pin_val = au_readl(GPIO2_OUTPUT); - pin_val |= ((1 << 16) | 1); - au_writel(pin_val, GPIO2_OUTPUT); - - // Setup PCI bus controller - au_writel(0, Au1500_PCI_CMEM); - au_writel(0x00003fff, Au1500_CFG_BASE); - - /* We run big endian without any of the software byte swapping, - * so configure the PCI bridge to help us out. - */ - au_writel(0xf | (2<<6) | (1<<5) | (1<<4), Au1500_PCI_CFG); - - au_writel(0xf0000000, Au1500_PCI_MWMASK_DEV); - au_writel(0, Au1500_PCI_MWBASE_REV_CCL); - au_writel(0x02a00356, Au1500_PCI_STATCMD); - au_writel(0x00003c04, Au1500_PCI_HDRTYPE); - au_writel(0x00000008, Au1500_PCI_MBAR); - au_sync(); - - board_pci_idsel = csb250_pci_idsel; -#endif - - /* Enable sys bus clock divider when IDLE state or no bus activity. */ - au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL); - -#ifdef CONFIG_RTC - // Enable the RTC if not already enabled - if (!(au_readl(0xac000028) & 0x20)) { - printk("enabling clock ...\n"); - au_writel((au_readl(0xac000028) | 0x20), 0xac000028); - } - // Put the clock in BCD mode - if (readl(0xac00002C) & 0x4) { /* reg B */ - au_writel(au_readl(0xac00002c) & ~0x4, 0xac00002c); - au_sync(); - } -#endif -} - -/* The IDSEL is selected in the GPIO2 register. We will make device - * 12 appear in slot 0 and device 13 appear in slot 1. - */ -int -csb250_pci_idsel(unsigned int devsel, int assert) -{ - int retval; - unsigned int gpio2_pins; - - retval = 1; - - /* First, disable both selects, then assert the one requested. - */ - au_writel(0xc000c000, GPIO2_OUTPUT); - au_sync(); - - if (assert) { - if (devsel == 12) - gpio2_pins = 0x40000000; - else if (devsel == 13) - gpio2_pins = 0x80000000; - else { - gpio2_pins = 0xc000c000; - retval = 0; - } - au_writel(gpio2_pins, GPIO2_OUTPUT); - } - au_sync(); - - return retval; -} |
