2 * Copyright 2002 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc.
4 * ppopov@mvista.com or source@mvista.com
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.
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.
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.
27 #include <linux/init.h>
28 #include <linux/delay.h>
30 #include <asm/mach-au1x00/au1000.h>
31 #include <asm/mach-pb1x00/pb1100.h>
33 void board_reset(void)
35 /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
36 au_writel(0x00000000, 0xAE00001C);
39 void __init board_setup(void)
41 volatile void __iomem * base = (volatile void __iomem *) 0xac000000UL;
43 // set AUX clock to 12MHz * 8 = 96 MHz
44 au_writel(8, SYS_AUXPLL);
45 au_writel(0, SYS_PININPUTEN);
48 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
50 u32 pin_func, sys_freqctrl, sys_clksrc;
52 // configure pins GPIO[14:9] as GPIO
53 pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x80);
55 /* zero and disable FREQ2 */
56 sys_freqctrl = au_readl(SYS_FREQCTRL0);
57 sys_freqctrl &= ~0xFFF00000;
58 au_writel(sys_freqctrl, SYS_FREQCTRL0);
60 /* zero and disable USBH/USBD/IrDA clock */
61 sys_clksrc = au_readl(SYS_CLKSRC);
62 sys_clksrc &= ~0x0000001F;
63 au_writel(sys_clksrc, SYS_CLKSRC);
65 sys_freqctrl = au_readl(SYS_FREQCTRL0);
66 sys_freqctrl &= ~0xFFF00000;
68 sys_clksrc = au_readl(SYS_CLKSRC);
69 sys_clksrc &= ~0x0000001F;
71 // FREQ2 = aux/2 = 48 MHz
72 sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
73 au_writel(sys_freqctrl, SYS_FREQCTRL0);
76 * Route 48MHz FREQ2 into USBH/USBD/IrDA
78 sys_clksrc |= ((4<<2) | (0<<1) | 0 );
79 au_writel(sys_clksrc, SYS_CLKSRC);
81 /* setup the static bus controller */
82 au_writel(0x00000002, MEM_STCFG3); /* type = PCMCIA */
83 au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */
84 au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */
86 // get USB Functionality pin state (device vs host drive pins)
87 pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
88 // 2nd USB port is USB host
90 au_writel(pin_func, SYS_PINFUNC);
92 #endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
94 /* Enable sys bus clock divider when IDLE state or no bus activity. */
95 au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
97 // Enable the RTC if not already enabled
98 if (!(readb(base + 0x28) & 0x20)) {
99 writeb(readb(base + 0x28) | 0x20, base + 0x28);
102 // Put the clock in BCD mode
103 if (readb(base + 0x2C) & 0x4) { /* reg B */
104 writeb(readb(base + 0x2c) & ~0x4, base + 0x2c);