Trying to compile a kerel for ARCH_CO285 fails with the following error:
<--  snip  -->
...
  CC      arch/arm/mach-footbridge/
dc21285.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:
In function 'dc21285_base_address':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:54: error: 'PCICFG0_BASE' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:54: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:54: error: for each function it appears in.)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:57: error: 'PCICFG1_BASE' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:
In function 'dc21285_scan_bus':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/arm/mach-footbridge/
dc21285.c:286: error: implicit declaration of function 'pci_scan_bus'
...
make[2]: *** [arch/arm/mach-footbridge/
dc21285.o] Error 1
<--  snip  -->
This does not seem to be a recent breakage.
The ARCH_CO285 support is old - kernel 2.2.0 contains first traces of
it, an it seems to have been pretty complete in later 2.2 kernels.
Since it seems to be completely dead code now this patch therefore
removes it.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 
        help
          Support for Cirrus Logic 711x/721x based boards.
 
-config ARCH_CO285
-       bool "Co-EBSA285"
-       select FOOTBRIDGE
-       select FOOTBRIDGE_ADDIN
-       select HAVE_IDE
-       help
-         Support for Intel's EBSA285 companion chip.
-
 config ARCH_EBSA110
        bool "EBSA-110"
        select ISA
 
 config LEDS
        bool "Timer and CPU usage LEDs"
-       depends on ARCH_CDB89712 || ARCH_CO285 || ARCH_EBSA110 || \
+       depends on ARCH_CDB89712 || ARCH_EBSA110 || \
                   ARCH_EBSA285 || ARCH_IMX || ARCH_INTEGRATOR || \
                   ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_NETWINDER || \
                   ARCH_OMAP || ARCH_P720T || ARCH_PXA_IDP || \
 
   incdir-$(CONFIG_ARCH_CLPS7500)   := cl7500
  machine-$(CONFIG_FOOTBRIDGE)     := footbridge
   incdir-$(CONFIG_FOOTBRIDGE)     := ebsa285
- machine-$(CONFIG_ARCH_CO285)     := footbridge
-  incdir-$(CONFIG_ARCH_CO285)     := ebsa285
  machine-$(CONFIG_ARCH_SHARK)     := shark
  machine-$(CONFIG_ARCH_SA1100)    := sa1100
 ifeq ($(CONFIG_ARCH_SA1100),y)
 
 pci-$(CONFIG_ARCH_NETWINDER) += netwinder-pci.o
 pci-$(CONFIG_ARCH_PERSONAL_SERVER) += personal-pci.o
 
-leds-$(CONFIG_ARCH_CO285) += ebsa285-leds.o
 leds-$(CONFIG_ARCH_EBSA285) += ebsa285-leds.o
 leds-$(CONFIG_ARCH_NETWINDER) += netwinder-leds.o
 
 obj-$(CONFIG_ARCH_CATS) += cats-hw.o isa-timer.o
-obj-$(CONFIG_ARCH_CO285) += co285.o dc21285-timer.o
 obj-$(CONFIG_ARCH_EBSA285) += ebsa285.o dc21285-timer.o
 obj-$(CONFIG_ARCH_NETWINDER) += netwinder-hw.o isa-timer.o
 obj-$(CONFIG_ARCH_PERSONAL_SERVER) += personal.o dc21285-timer.o
 
+++ /dev/null
-/*
- * linux/arch/arm/mach-footbridge/co285.c
- *
- * CO285 machine fixup
- */
-#include <linux/init.h>
-
-#include <asm/hardware/dec21285.h>
-#include <asm/mach-types.h>
-
-#include <asm/mach/arch.h>
-
-#include "common.h"
-
-static void __init
-fixup_coebsa285(struct machine_desc *desc, struct tag *tags,
-               char **cmdline, struct meminfo *mi)
-{
-       extern unsigned long boot_memory_end;
-       extern char boot_command_line[];
-
-       mi->nr_banks      = 1;
-       mi->bank[0].start = PHYS_OFFSET;
-       mi->bank[0].size  = boot_memory_end;
-       mi->bank[0].node  = 0;
-
-       *cmdline = boot_command_line;
-}
-
-MACHINE_START(CO285, "co-EBSA285")
-       /* Maintainer: Mark van Doesburg */
-       .phys_io        = DC21285_ARMCSR_BASE,
-       .io_pg_offst    = ((0x7cf00000) >> 18) & 0xfffc,
-       .fixup          = fixup_coebsa285,
-       .map_io         = footbridge_map_io,
-       .init_irq       = footbridge_init_irq,
-       .timer          = &footbridge_timer,
-MACHINE_END
-
 
 #endif
 };
 
-/*
- * The CO-ebsa285 mapping.
- */
-static struct map_desc co285_io_desc[] __initdata = {
-#ifdef CONFIG_ARCH_CO285
-       {
-               .virtual        = PCIO_BASE,
-               .pfn            = __phys_to_pfn(DC21285_PCI_IO),
-               .length         = PCIO_SIZE,
-               .type           = MT_DEVICE,
-       }, {
-               .virtual        = PCIMEM_BASE,
-               .pfn            = __phys_to_pfn(DC21285_PCI_MEM),
-               .length         = PCIMEM_SIZE,
-               .type           = MT_DEVICE,
-       },
-#endif
-};
-
 void __init footbridge_map_io(void)
 {
        /*
         * Now, work out what we've got to map in addition on this
         * platform.
         */
-       if (machine_is_co285())
-               iotable_init(co285_io_desc, ARRAY_SIZE(co285_io_desc));
        if (footbridge_cfn_mode())
                iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc));
 }
 
 
 static int __init leds_init(void)
 {
-       if (machine_is_ebsa285() || machine_is_co285())
+       if (machine_is_ebsa285())
                leds_event = ebsa285_leds_event;
 
        leds_event(led_start);
 
 
 void __init isa_rtc_init(void)
 {
-       if (machine_is_co285() ||
-           machine_is_personal_server())
+       if (machine_is_personal_server())
                /*
                 * Add-in 21285s shouldn't access the RTC
                 */
 
 
 #include <asm/arch/memory.h>
 
-#ifdef CONFIG_ARCH_FOOTBRIDGE
 /*   Virtual      Physical     Size
  * 0xff800000  0x40000000      1MB     X-Bus
  * 0xff000000  0x7c000000      1MB     PCI I/O space
 #define PCIMEM_SIZE            0x01000000
 #define PCIMEM_BASE            0xf0000000
 
-#elif defined(CONFIG_ARCH_CO285)
-/*
- * This is the COEBSA285 cut-down mapping
- */
-#define PCIMEM_SIZE            0x80000000
-#define PCIMEM_BASE            0x80000000
-
-#define WFLUSH_SIZE            0x01000000
-#define WFLUSH_BASE            0x7d000000
-
-#define ARMCSR_SIZE            0x00100000
-#define ARMCSR_BASE            0x7cf00000
-
-#define XBUS_SIZE              0x00020000
-#define XBUS_BASE              0x7cee0000
-
-#define PCIO_SIZE              0x00010000
-#define PCIO_BASE              0x7ced0000
-
-#else
-
-#error "Undefined footbridge architecture"
-
-#endif
-
 #define XBUS_LEDS              ((volatile unsigned char *)(XBUS_BASE + 0x12000))
 #define XBUS_LED_AMBER         (1 << 0)
 #define XBUS_LED_GREEN         (1 << 1)
 
 
 #endif
 
-#if defined(CONFIG_ARCH_FOOTBRIDGE)
-
 /* Task size and page offset at 3GB */
 #define TASK_SIZE              UL(0xbf000000)
 #define PAGE_OFFSET            UL(0xc0000000)
  */
 #define FLUSH_BASE             0xf9000000
 
-#elif defined(CONFIG_ARCH_CO285)
-
-/* Task size and page offset at 1.5GB */
-#define TASK_SIZE              UL(0x5f000000)
-#define PAGE_OFFSET            UL(0x60000000)
-
-/*
- * Cache flushing area.
- */
-#define FLUSH_BASE             0x7e000000
-
-#else
-
-#error "Undefined footbridge architecture"
-
-#endif
-
 /*
  * Physical DRAM offset.
  */
 
  */
 
 
-#ifdef CONFIG_ARCH_FOOTBRIDGE
 #define VMALLOC_END       (PAGE_OFFSET + 0x30000000)
-#else
-#define VMALLOC_END       (PAGE_OFFSET + 0x20000000)
-#endif