2 * Copyright 2000 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc.
4 * ppopov@mvista.com or source@mvista.com
6 * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <linux/init.h>
30 #include <linux/ioport.h>
31 #include <linux/module.h>
34 #include <asm/mipsregs.h>
35 #include <asm/reboot.h>
41 extern void __init board_setup(void);
42 extern void au1000_restart(char *);
43 extern void au1000_halt(void);
44 extern void au1000_power_off(void);
45 extern void set_cpuspec(void);
47 void __init plat_mem_setup(void)
51 unsigned long prid, cpufreq, bclk = 1;
56 board_setup(); /* board specific setup */
58 prid = read_c0_prid();
60 #ifdef CONFIG_SOC_AU1000_FREQUENCY
61 cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
66 cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
67 printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
72 /* Enable BCLK switching */
73 bclk = au_readl(0xB190003C);
74 au_writel(bclk | 0x60, 0xB190003C);
75 printk("BCLK switching enabled!\n");
79 /* Various early Au1000 Errata corrected by this */
80 set_c0_config(1<<19); /* Set Config[OD] */
83 /* Clear to obtain best system bus performance */
84 clear_c0_config(1<<19); /* Clear Config[OD] */
87 argptr = prom_getcmdline();
89 #ifdef CONFIG_SERIAL_8250_CONSOLE
90 if ((argptr = strstr(argptr, "console=")) == NULL) {
91 argptr = prom_getcmdline();
92 strcat(argptr, " console=ttyS0,115200");
96 #ifdef CONFIG_FB_AU1100
97 if ((argptr = strstr(argptr, "video=")) == NULL) {
98 argptr = prom_getcmdline();
100 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
105 #if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
106 /* au1000 does not support vra, au1500 and au1100 do */
107 strcat(argptr, " au1000_audio=vra");
108 argptr = prom_getcmdline();
110 _machine_restart = au1000_restart;
111 _machine_halt = au1000_halt;
112 pm_power_off = au1000_power_off;
114 /* IO/MEM resources. */
116 ioport_resource.start = IOPORT_RESOURCE_START;
117 ioport_resource.end = IOPORT_RESOURCE_END;
118 iomem_resource.start = IOMEM_RESOURCE_START;
119 iomem_resource.end = IOMEM_RESOURCE_END;
121 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
122 au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
124 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
125 au_writel(0, SYS_TOYTRIM);
128 #if defined(CONFIG_64BIT_PHYS_ADDR)
129 /* This routine should be valid for all Au1x based boards */
130 phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
132 /* Don't fixup 36 bit addresses */
133 if ((phys_addr >> 32) != 0)
138 u32 start = (u32)Au1500_PCI_MEM_START;
139 u32 end = (u32)Au1500_PCI_MEM_END;
141 /* Check for PCI memory window */
142 if (phys_addr >= start && (phys_addr + size - 1) <= end)
144 ((phys_addr - start) + Au1500_PCI_MEM_START);
148 /* All Au1x SOCs have a pcmcia controller */
149 /* We setup our 32 bit pseudo addresses to be equal to the
150 * 36 bit addr >> 4, to make it easier to check the address
152 * The Au1x socket 0 phys attribute address is 0xF 4000 0000.
153 * The pseudo address we use is 0xF400 0000. Any address over
154 * 0xF400 0000 is a pcmcia pseudo address.
156 if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF)) {
157 return (phys_t)(phys_addr << 4);
163 EXPORT_SYMBOL(__fixup_bigphys_addr);