2 * Copyright 2000 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.
26 #include <linux/config.h>
27 #include <linux/init.h>
28 #include <linux/sched.h>
29 #include <linux/ioport.h>
31 #include <linux/console.h>
32 #include <linux/delay.h>
35 #include <asm/bootinfo.h>
37 #include <asm/mipsregs.h>
38 #include <asm/reboot.h>
39 #include <asm/pgtable.h>
40 #include <asm/mach-au1x00/au1000.h>
41 #include <asm/mach-pb1x00/pb1500.h>
43 void board_reset (void)
45 /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
46 au_writel(0x00000000, 0xAE00001C);
49 void __init board_setup(void)
52 u32 sys_freqctrl, sys_clksrc;
54 sys_clksrc = sys_freqctrl = pin_func = 0;
55 // set AUX clock to 12MHz * 8 = 96 MHz
56 au_writel(8, SYS_AUXPLL);
57 au_writel(0, SYS_PINSTATERD);
60 #if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
62 /* GPIO201 is input for PCMCIA card detect */
63 /* GPIO203 is input for PCMCIA interrupt request */
64 au_writel(au_readl(GPIO2_DIR) & (u32)(~((1<<1)|(1<<3))), GPIO2_DIR);
66 /* zero and disable FREQ2 */
67 sys_freqctrl = au_readl(SYS_FREQCTRL0);
68 sys_freqctrl &= ~0xFFF00000;
69 au_writel(sys_freqctrl, SYS_FREQCTRL0);
71 /* zero and disable USBH/USBD clocks */
72 sys_clksrc = au_readl(SYS_CLKSRC);
73 sys_clksrc &= ~0x00007FE0;
74 au_writel(sys_clksrc, SYS_CLKSRC);
76 sys_freqctrl = au_readl(SYS_FREQCTRL0);
77 sys_freqctrl &= ~0xFFF00000;
79 sys_clksrc = au_readl(SYS_CLKSRC);
80 sys_clksrc &= ~0x00007FE0;
82 // FREQ2 = aux/2 = 48 MHz
83 sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
84 au_writel(sys_freqctrl, SYS_FREQCTRL0);
87 * Route 48MHz FREQ2 into USB Host and/or Device
89 #ifdef CONFIG_USB_OHCI
90 sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
92 #ifdef CONFIG_AU1X00_USB_DEVICE
93 sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
95 au_writel(sys_clksrc, SYS_CLKSRC);
98 pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
99 #ifndef CONFIG_AU1X00_USB_DEVICE
100 // 2nd USB port is USB host
103 au_writel(pin_func, SYS_PINFUNC);
104 #endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
109 // Setup PCI bus controller
110 au_writel(0, Au1500_PCI_CMEM);
111 au_writel(0x00003fff, Au1500_CFG_BASE);
112 #if defined(__MIPSEB__)
113 au_writel(0xf | (2<<6) | (1<<4), Au1500_PCI_CFG);
115 au_writel(0xf, Au1500_PCI_CFG);
117 au_writel(0xf0000000, Au1500_PCI_MWMASK_DEV);
118 au_writel(0, Au1500_PCI_MWBASE_REV_CCL);
119 au_writel(0x02a00356, Au1500_PCI_STATCMD);
120 au_writel(0x00003c04, Au1500_PCI_HDRTYPE);
121 au_writel(0x00000008, Au1500_PCI_MBAR);
125 /* Enable sys bus clock divider when IDLE state or no bus activity. */
126 au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
128 /* Enable the RTC if not already enabled */
129 if (!(au_readl(0xac000028) & 0x20)) {
130 printk("enabling clock ...\n");
131 au_writel((au_readl(0xac000028) | 0x20), 0xac000028);
133 /* Put the clock in BCD mode */
134 if (readl(0xac00002C) & 0x4) { /* reg B */
135 au_writel(au_readl(0xac00002c) & ~0x4, 0xac00002c);