2 * Copyright 2000, 2007-2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com
5 * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <linux/init.h>
29 #include <linux/ioport.h>
30 #include <linux/module.h>
33 #include <asm/mipsregs.h>
34 #include <asm/reboot.h>
40 extern void __init board_setup(void);
41 extern void au1000_restart(char *);
42 extern void au1000_halt(void);
43 extern void au1000_power_off(void);
44 extern void set_cpuspec(void);
46 void __init plat_mem_setup(void)
50 unsigned long prid, cpufreq, bclk;
55 board_setup(); /* board specific setup */
57 prid = read_c0_prid();
59 #ifdef CONFIG_SOC_AU1000_FREQUENCY
60 cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
65 cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
66 printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
69 /* Enable BCLK switching */
70 bclk = au_readl(SYS_POWERCTRL);
71 au_writel(bclk | 0x60, SYS_POWERCTRL);
72 printk(KERN_INFO "BCLK switching enabled!\n");
76 /* Various early Au1xx0 errata corrected by this */
77 set_c0_config(1 << 19); /* Set Config[OD] */
79 /* Clear to obtain best system bus performance */
80 clear_c0_config(1 << 19); /* Clear Config[OD] */
82 argptr = prom_getcmdline();
84 #ifdef CONFIG_SERIAL_8250_CONSOLE
85 argptr = strstr(argptr, "console=");
87 argptr = prom_getcmdline();
88 strcat(argptr, " console=ttyS0,115200");
92 #ifdef CONFIG_FB_AU1100
93 argptr = strstr(argptr, "video=");
95 argptr = prom_getcmdline();
97 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
101 #if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
102 /* au1000 does not support vra, au1500 and au1100 do */
103 strcat(argptr, " au1000_audio=vra");
104 argptr = prom_getcmdline();
106 _machine_restart = au1000_restart;
107 _machine_halt = au1000_halt;
108 pm_power_off = au1000_power_off;
110 /* IO/MEM resources. */
112 ioport_resource.start = IOPORT_RESOURCE_START;
113 ioport_resource.end = IOPORT_RESOURCE_END;
114 iomem_resource.start = IOMEM_RESOURCE_START;
115 iomem_resource.end = IOMEM_RESOURCE_END;
117 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
118 au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
120 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
121 au_writel(0, SYS_TOYTRIM);
124 #if defined(CONFIG_64BIT_PHYS_ADDR)
125 /* This routine should be valid for all Au1x based boards */
126 phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
128 /* Don't fixup 36-bit addresses */
129 if ((phys_addr >> 32) != 0)
134 u32 start = (u32)Au1500_PCI_MEM_START;
135 u32 end = (u32)Au1500_PCI_MEM_END;
137 /* Check for PCI memory window */
138 if (phys_addr >= start && (phys_addr + size - 1) <= end)
140 ((phys_addr - start) + Au1500_PCI_MEM_START);
145 * All Au1xx0 SOCs have a PCMCIA controller.
146 * We setup our 32-bit pseudo addresses to be equal to the
147 * 36-bit addr >> 4, to make it easier to check the address
149 * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
150 * The pseudo address we use is 0xF400 0000. Any address over
151 * 0xF400 0000 is a PCMCIA pseudo address.
153 if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
154 return (phys_t)(phys_addr << 4);
159 EXPORT_SYMBOL(__fixup_bigphys_addr);