Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2002 MontaVista Software Inc. |
| 3 | * Author: MontaVista Software, Inc. |
| 4 | * ppopov@mvista.com or source@mvista.com |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the |
| 8 | * Free Software Foundation; either version 2 of the License, or (at your |
| 9 | * option) any later version. |
| 10 | * |
| 11 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 12 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 13 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 14 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 15 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 16 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 17 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 18 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 19 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 20 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License along |
| 23 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 24 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/init.h> |
| 27 | #include <linux/sched.h> |
| 28 | #include <linux/ioport.h> |
| 29 | #include <linux/mm.h> |
| 30 | #include <linux/console.h> |
| 31 | #include <linux/delay.h> |
| 32 | |
| 33 | #include <asm/cpu.h> |
| 34 | #include <asm/bootinfo.h> |
| 35 | #include <asm/irq.h> |
| 36 | #include <asm/mipsregs.h> |
| 37 | #include <asm/reboot.h> |
| 38 | #include <asm/pgtable.h> |
| 39 | #include <asm/mach-au1x00/au1000.h> |
| 40 | #include <asm/mach-pb1x00/pb1100.h> |
| 41 | |
| 42 | void board_reset (void) |
| 43 | { |
| 44 | /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */ |
| 45 | au_writel(0x00000000, 0xAE00001C); |
| 46 | } |
| 47 | |
| 48 | void __init board_setup(void) |
| 49 | { |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 50 | volatile void __iomem * base = (volatile void __iomem *) 0xac000000UL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | // set AUX clock to 12MHz * 8 = 96 MHz |
| 53 | au_writel(8, SYS_AUXPLL); |
| 54 | au_writel(0, SYS_PININPUTEN); |
| 55 | udelay(100); |
| 56 | |
Florian Fainelli | f708631 | 2007-09-25 17:07:24 +0200 | [diff] [blame] | 57 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 58 | { |
| 59 | u32 pin_func, sys_freqctrl, sys_clksrc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 61 | // configure pins GPIO[14:9] as GPIO |
| 62 | pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x80); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 64 | /* zero and disable FREQ2 */ |
| 65 | sys_freqctrl = au_readl(SYS_FREQCTRL0); |
| 66 | sys_freqctrl &= ~0xFFF00000; |
| 67 | au_writel(sys_freqctrl, SYS_FREQCTRL0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 69 | /* zero and disable USBH/USBD/IrDA clock */ |
| 70 | sys_clksrc = au_readl(SYS_CLKSRC); |
| 71 | sys_clksrc &= ~0x0000001F; |
| 72 | au_writel(sys_clksrc, SYS_CLKSRC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 74 | sys_freqctrl = au_readl(SYS_FREQCTRL0); |
| 75 | sys_freqctrl &= ~0xFFF00000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 77 | sys_clksrc = au_readl(SYS_CLKSRC); |
| 78 | sys_clksrc &= ~0x0000001F; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 80 | // FREQ2 = aux/2 = 48 MHz |
| 81 | sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20)); |
| 82 | au_writel(sys_freqctrl, SYS_FREQCTRL0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 84 | /* |
| 85 | * Route 48MHz FREQ2 into USBH/USBD/IrDA |
| 86 | */ |
| 87 | sys_clksrc |= ((4<<2) | (0<<1) | 0 ); |
| 88 | au_writel(sys_clksrc, SYS_CLKSRC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 90 | /* setup the static bus controller */ |
| 91 | au_writel(0x00000002, MEM_STCFG3); /* type = PCMCIA */ |
| 92 | au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */ |
| 93 | au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */ |
| 94 | |
| 95 | // get USB Functionality pin state (device vs host drive pins) |
| 96 | pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000); |
| 97 | // 2nd USB port is USB host |
| 98 | pin_func |= 0x8000; |
| 99 | au_writel(pin_func, SYS_PINFUNC); |
| 100 | } |
Florian Fainelli | f708631 | 2007-09-25 17:07:24 +0200 | [diff] [blame] | 101 | #endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | /* Enable sys bus clock divider when IDLE state or no bus activity. */ |
| 104 | au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL); |
| 105 | |
| 106 | // Enable the RTC if not already enabled |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 107 | if (!(readb(base + 0x28) & 0x20)) { |
| 108 | writeb(readb(base + 0x28) | 0x20, base + 0x28); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | au_sync(); |
| 110 | } |
| 111 | // Put the clock in BCD mode |
Ralf Baechle | 3f21cde | 2006-11-07 10:19:05 +0000 | [diff] [blame] | 112 | if (readb(base + 0x2C) & 0x4) { /* reg B */ |
| 113 | writeb(readb(base + 0x2c) & ~0x4, base + 0x2c); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | au_sync(); |
| 115 | } |
| 116 | } |