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