1 /*
2 * Copyright 2000, 2007-2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com
4 *
5 * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
6 *
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.
11 *
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.
22 *
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.
26 */
27
28 #include <linux/init.h>
29 #include <linux/ioport.h>
30 #include <linux/module.h>
31 #include <linux/pm.h>
32
33 #include <asm/mipsregs.h>
34 #include <asm/reboot.h>
35 #include <asm/time.h>
36
37 #include <au1000.h>
38
39 extern void __init board_setup(void);
40 extern void au1000_restart(char *);
41 extern void au1000_halt(void);
42 extern void au1000_power_off(void);
43 extern void set_cpuspec(void);
44
plat_mem_setup(void)45 void __init plat_mem_setup(void)
46 {
47 unsigned long est_freq;
48
49 /* determine core clock */
50 est_freq = au1xxx_calc_clock();
51 est_freq += 5000; /* round */
52 est_freq -= est_freq % 10000;
53 printk(KERN_INFO "(PRId %08x) @ %lu.%02lu MHz\n", read_c0_prid(),
54 est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);
55
56 _machine_restart = au1000_restart;
57 _machine_halt = au1000_halt;
58 pm_power_off = au1000_power_off;
59
60 board_setup(); /* board specific setup */
61
62 if (au1xxx_cpu_needs_config_od())
63 /* Various early Au1xx0 errata corrected by this */
64 set_c0_config(1 << 19); /* Set Config[OD] */
65 else
66 /* Clear to obtain best system bus performance */
67 clear_c0_config(1 << 19); /* Clear Config[OD] */
68
69 /* IO/MEM resources. */
70 set_io_port_base(0);
71 ioport_resource.start = IOPORT_RESOURCE_START;
72 ioport_resource.end = IOPORT_RESOURCE_END;
73 iomem_resource.start = IOMEM_RESOURCE_START;
74 iomem_resource.end = IOMEM_RESOURCE_END;
75 }
76
77 #if defined(CONFIG_64BIT_PHYS_ADDR)
78 /* This routine should be valid for all Au1x based boards */
__fixup_bigphys_addr(phys_t phys_addr,phys_t size)79 phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
80 {
81 /* Don't fixup 36-bit addresses */
82 if ((phys_addr >> 32) != 0)
83 return phys_addr;
84
85 #ifdef CONFIG_PCI
86 {
87 u32 start = (u32)Au1500_PCI_MEM_START;
88 u32 end = (u32)Au1500_PCI_MEM_END;
89
90 /* Check for PCI memory window */
91 if (phys_addr >= start && (phys_addr + size - 1) <= end)
92 return (phys_t)
93 ((phys_addr - start) + Au1500_PCI_MEM_START);
94 }
95 #endif
96
97 /*
98 * All Au1xx0 SOCs have a PCMCIA controller.
99 * We setup our 32-bit pseudo addresses to be equal to the
100 * 36-bit addr >> 4, to make it easier to check the address
101 * and fix it.
102 * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
103 * The pseudo address we use is 0xF400 0000. Any address over
104 * 0xF400 0000 is a PCMCIA pseudo address.
105 */
106 if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
107 return (phys_t)(phys_addr << 4);
108
109 /* default nop */
110 return phys_addr;
111 }
112 EXPORT_SYMBOL(__fixup_bigphys_addr);
113 #endif
114