kernel/linux/arch/arm/mach-footbridge/arch.c

   1 /*
   2  * linux/arch/arm/mach-footbridge/arch.c
   3  *
   4  * Architecture specific fixups.  This is where any
   5  * parameters in the params struct are fixed up, or
   6  * any additional architecture specific information
   7  * is pulled from the params struct.
   8  */
   9 #include <linux/config.h>
  10 #include <linux/module.h>
  11 #include <linux/tty.h>
  12 #include <linux/delay.h>
  13 #include <linux/pm.h>
  14 #include <linux/init.h>
  15
  16 #include <asm/hardware/dec21285.h>
  17 #include <asm/elf.h>
  18 #include <asm/setup.h>
  19 #include <asm/mach-types.h>
  20
  21 #include <asm/mach/arch.h>
  22
  23 extern void footbridge_map_io(void);
  24 extern void footbridge_init_irq(void);
  25 extern void footbridge_init_time(void);
  26
  27 unsigned int mem_fclk_21285 = 50000000;
  28
  29 EXPORT_SYMBOL(mem_fclk_21285);
  30
  31 static int __init parse_tag_memclk(const struct tag *tag)
  32 {
  33         mem_fclk_21285 = tag->u.memclk.fmemclk;
  34         return 0;
  35 }
  36
  37 __tagtable(ATAG_MEMCLK, parse_tag_memclk);
  38
  39 #ifdef CONFIG_ARCH_EBSA285
  40 MACHINE_START(EBSA285, "EBSA285")
  41         MAINTAINER("Russell King")
  42         BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
  43         BOOT_PARAMS(0x00000100)
  44         VIDEO(0x000a0000, 0x000bffff)
  45         MAPIO(footbridge_map_io)
  46         INITIRQ(footbridge_init_irq)
  47         INITTIME(footbridge_init_time)
  48 MACHINE_END
  49 #endif
  50
  51 #ifdef CONFIG_ARCH_NETWINDER
  52 /*
  53  * Older NeTTroms either do not provide a parameters
  54  * page, or they don't supply correct information in
  55  * the parameter page.
  56  */
  57 static void __init
  58 fixup_netwinder(struct machine_desc *desc, struct tag *tags,
  59                 char **cmdline, struct meminfo *mi)
  60 {
  61 #ifdef CONFIG_ISAPNP
  62         extern int isapnp_disable;
  63
  64         /*
  65          * We must not use the kernels ISAPnP code
  66          * on the NetWinder - it will reset the settings
  67          * for the WaveArtist chip and render it inoperable.
  68          */
  69         isapnp_disable = 1;
  70 #endif
  71 }
  72
  73 MACHINE_START(NETWINDER, "Rebel-NetWinder")
  74         MAINTAINER("Russell King/Rebel.com")
  75         BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
  76         BOOT_PARAMS(0x00000100)
  77         VIDEO(0x000a0000, 0x000bffff)
  78         DISABLE_PARPORT(0)
  79         DISABLE_PARPORT(2)
  80         FIXUP(fixup_netwinder)
  81         MAPIO(footbridge_map_io)
  82         INITIRQ(footbridge_init_irq)
  83         INITTIME(footbridge_init_time)
  84 MACHINE_END
  85 #endif
  86
  87 #ifdef CONFIG_ARCH_CATS
  88 /*
  89  * CATS uses soft-reboot by default, since
  90  * hard reboots fail on early boards.
  91  */
  92 static void __init
  93 fixup_cats(struct machine_desc *desc, struct tag *tags,
  94            char **cmdline, struct meminfo *mi)
  95 {
  96         ORIG_VIDEO_LINES  = 25;
  97         ORIG_VIDEO_POINTS = 16;
  98         ORIG_Y = 24;
  99 }
 100
 101 MACHINE_START(CATS, "Chalice-CATS")
 102         MAINTAINER("Philip Blundell")
 103         BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
 104         BOOT_PARAMS(0x00000100)
 105         SOFT_REBOOT
 106         FIXUP(fixup_cats)
 107         MAPIO(footbridge_map_io)
 108         INITIRQ(footbridge_init_irq)
 109         INITTIME(footbridge_init_time)
 110 MACHINE_END
 111 #endif
 112
 113 #ifdef CONFIG_ARCH_CO285
 114
 115 static void __init
 116 fixup_coebsa285(struct machine_desc *desc, struct tag *tags,
 117                 char **cmdline, struct meminfo *mi)
 118 {
 119         extern unsigned long boot_memory_end;
 120         extern char boot_command_line[];
 121
 122         mi->nr_banks      = 1;
 123         mi->bank[0].start = PHYS_OFFSET;
 124         mi->bank[0].size  = boot_memory_end;
 125         mi->bank[0].node  = 0;
 126
 127         *cmdline = boot_command_line;
 128 }
 129
 130 MACHINE_START(CO285, "co-EBSA285")
 131         MAINTAINER("Mark van Doesburg")
 132         BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0x7cf00000)
 133         FIXUP(fixup_coebsa285)
 134         MAPIO(footbridge_map_io)
 135         INITIRQ(footbridge_init_irq)
 136         INITTIME(footbridge_init_time)
 137 MACHINE_END
 138 #endif
 139
 140 #ifdef CONFIG_ARCH_PERSONAL_SERVER
 141 MACHINE_START(PERSONAL_SERVER, "Compaq-PersonalServer")
 142         MAINTAINER("Jamey Hicks / George France")
 143         BOOT_MEM(0x00000000, DC21285_ARMCSR_BASE, 0xfe000000)
 144         BOOT_PARAMS(0x00000100)
 145         MAPIO(footbridge_map_io)
 146         INITIRQ(footbridge_init_irq)
 147         INITTIME(footbridge_init_time)
 148 MACHINE_END
 149 #endif