1 /*
2 * Copyright 2002, 2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com>
4 *
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.
9 *
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.
20 *
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.
24 */
25
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/interrupt.h>
29
30 #include <asm/mach-au1x00/au1000.h>
31 #include <asm/mach-pb1x00/pb1100.h>
32
33 #include <prom.h>
34
35
36 struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
37 { AU1000_GPIO_9, IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card Fully_Inserted# */
38 { AU1000_GPIO_10, IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card STSCHG# */
39 { AU1000_GPIO_11, IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card IRQ# */
40 { AU1000_GPIO_13, IRQF_TRIGGER_LOW, 0 }, /* DC_IRQ# */
41 };
42
43
get_system_type(void)44 const char *get_system_type(void)
45 {
46 return "Alchemy Pb1100";
47 }
48
board_reset(void)49 void board_reset(void)
50 {
51 /* Hit BCSR.RST_VDDI[SOFT_RESET] */
52 au_writel(0x00000000, PB1100_RST_VDDI);
53 }
54
board_init_irq(void)55 void __init board_init_irq(void)
56 {
57 au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map));
58 }
59
board_setup(void)60 void __init board_setup(void)
61 {
62 volatile void __iomem *base = (volatile void __iomem *)0xac000000UL;
63 char *argptr;
64
65 argptr = prom_getcmdline();
66 #ifdef CONFIG_SERIAL_8250_CONSOLE
67 argptr = strstr(argptr, "console=");
68 if (argptr == NULL) {
69 argptr = prom_getcmdline();
70 strcat(argptr, " console=ttyS0,115200");
71 }
72 #endif
73
74 #ifdef CONFIG_FB_AU1100
75 argptr = strstr(argptr, "video=");
76 if (argptr == NULL) {
77 argptr = prom_getcmdline();
78 /* default panel */
79 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
80 }
81 #endif
82
83 #if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
84 /* au1000 does not support vra, au1500 and au1100 do */
85 strcat(argptr, " au1000_audio=vra");
86 argptr = prom_getcmdline();
87 #endif
88
89 /* Set AUX clock to 12 MHz * 8 = 96 MHz */
90 au_writel(8, SYS_AUXPLL);
91 au_writel(0, SYS_PININPUTEN);
92 udelay(100);
93
94 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
95 {
96 u32 pin_func, sys_freqctrl, sys_clksrc;
97
98 /* Configure pins GPIO[14:9] as GPIO */
99 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3;
100
101 /* Zero and disable FREQ2 */
102 sys_freqctrl = au_readl(SYS_FREQCTRL0);
103 sys_freqctrl &= ~0xFFF00000;
104 au_writel(sys_freqctrl, SYS_FREQCTRL0);
105
106 /* Zero and disable USBH/USBD/IrDA clock */
107 sys_clksrc = au_readl(SYS_CLKSRC);
108 sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);
109 au_writel(sys_clksrc, SYS_CLKSRC);
110
111 sys_freqctrl = au_readl(SYS_FREQCTRL0);
112 sys_freqctrl &= ~0xFFF00000;
113
114 sys_clksrc = au_readl(SYS_CLKSRC);
115 sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);
116
117 /* FREQ2 = aux / 2 = 48 MHz */
118 sys_freqctrl |= (0 << SYS_FC_FRDIV2_BIT) |
119 SYS_FC_FE2 | SYS_FC_FS2;
120 au_writel(sys_freqctrl, SYS_FREQCTRL0);
121
122 /*
123 * Route 48 MHz FREQ2 into USBH/USBD/IrDA
124 */
125 sys_clksrc |= SYS_CS_MUX_FQ2 << SYS_CS_MIR_BIT;
126 au_writel(sys_clksrc, SYS_CLKSRC);
127
128 /* Setup the static bus controller */
129 au_writel(0x00000002, MEM_STCFG3); /* type = PCMCIA */
130 au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */
131 au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */
132
133 /*
134 * Get USB Functionality pin state (device vs host drive pins).
135 */
136 pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_USB;
137 /* 2nd USB port is USB host. */
138 pin_func |= SYS_PF_USB;
139 au_writel(pin_func, SYS_PINFUNC);
140 }
141 #endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
142
143 /* Enable sys bus clock divider when IDLE state or no bus activity. */
144 au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
145
146 /* Enable the RTC if not already enabled. */
147 if (!(readb(base + 0x28) & 0x20)) {
148 writeb(readb(base + 0x28) | 0x20, base + 0x28);
149 au_sync();
150 }
151 /* Put the clock in BCD mode. */
152 if (readb(base + 0x2C) & 0x4) { /* reg B */
153 writeb(readb(base + 0x2c) & ~0x4, base + 0x2c);
154 au_sync();
155 }
156 }
157