2 * Copyright 2002, 2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
11 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
13 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
16 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
17 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <linux/init.h>
27 #include <linux/delay.h>
29 #include <asm/mach-au1x00/au1000.h>
30 #include <asm/mach-pb1x00/pb1100.h>
33 struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
34 { AU1000_GPIO_9, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card Fully_Inserted# */
35 { AU1000_GPIO_10, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card STSCHG# */
36 { AU1000_GPIO_11, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card IRQ# */
37 { AU1000_GPIO_13, INTC_INT_LOW_LEVEL, 0 }, /* DC_IRQ# */
40 int __initdata au1xxx_nr_irqs = ARRAY_SIZE(au1xxx_irq_map);
43 const char *get_system_type(void)
45 return "Alchemy Pb1100";
48 void board_reset(void)
50 /* Hit BCSR.RST_VDDI[SOFT_RESET] */
51 au_writel(0x00000000, PB1100_RST_VDDI);
54 void __init board_setup(void)
56 volatile void __iomem *base = (volatile void __iomem *)0xac000000UL;
58 /* Set AUX clock to 12 MHz * 8 = 96 MHz */
59 au_writel(8, SYS_AUXPLL);
60 au_writel(0, SYS_PININPUTEN);
63 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
65 u32 pin_func, sys_freqctrl, sys_clksrc;
67 /* Configure pins GPIO[14:9] as GPIO */
68 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3;
70 /* Zero and disable FREQ2 */
71 sys_freqctrl = au_readl(SYS_FREQCTRL0);
72 sys_freqctrl &= ~0xFFF00000;
73 au_writel(sys_freqctrl, SYS_FREQCTRL0);
75 /* Zero and disable USBH/USBD/IrDA clock */
76 sys_clksrc = au_readl(SYS_CLKSRC);
77 sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);
78 au_writel(sys_clksrc, SYS_CLKSRC);
80 sys_freqctrl = au_readl(SYS_FREQCTRL0);
81 sys_freqctrl &= ~0xFFF00000;
83 sys_clksrc = au_readl(SYS_CLKSRC);
84 sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);
86 /* FREQ2 = aux / 2 = 48 MHz */
87 sys_freqctrl |= (0 << SYS_FC_FRDIV2_BIT) |
88 SYS_FC_FE2 | SYS_FC_FS2;
89 au_writel(sys_freqctrl, SYS_FREQCTRL0);
92 * Route 48 MHz FREQ2 into USBH/USBD/IrDA
94 sys_clksrc |= SYS_CS_MUX_FQ2 << SYS_CS_MIR_BIT;
95 au_writel(sys_clksrc, SYS_CLKSRC);
97 /* Setup the static bus controller */
98 au_writel(0x00000002, MEM_STCFG3); /* type = PCMCIA */
99 au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */
100 au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */
103 * Get USB Functionality pin state (device vs host drive pins).
105 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_USB;
106 /* 2nd USB port is USB host. */
107 pin_func |= SYS_PF_USB;
108 au_writel(pin_func, SYS_PINFUNC);
110 #endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
112 /* Enable sys bus clock divider when IDLE state or no bus activity. */
113 au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
115 /* Enable the RTC if not already enabled. */
116 if (!(readb(base + 0x28) & 0x20)) {
117 writeb(readb(base + 0x28) | 0x20, base + 0x28);
120 /* Put the clock in BCD mode. */
121 if (readb(base + 0x2C) & 0x4) { /* reg B */
122 writeb(readb(base + 0x2c) & ~0x4, base + 0x2c);