config/arch/arm.in.2
author Sam Ravnborg <sam@ravnborg.org>
Sun Apr 03 18:22:00 2011 +0200 (2011-04-03)
changeset 2371 c131e30363ee
parent 1716 6bbf206a5b57
child 2484 d1a8c2ae7946
permissions -rw-r--r--
arch/sparc: add absic support

Add support for building SPARC targeted toolchain.
With this patch I have built a working sparc V8 (32 toolchain).

Testing shows that not all gcc versions works well:
4.4.1 OK (kernel builds and the final kernel can boot)
4.4.2 Not tested
4.4.3 Not tested
4.4.4 BAD (Kernel can build but fails during boot)
4.4.5 BAD (Kernel can build but fails during boot)
4.5.1 BAD (Build fails with a spill related ICE - http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35664)
4.5.2 OK (kernel builds and boots)

I have successfully been using the 4.5.2 version for a few months.

This patch does not add support for the LEON variant.
That may come later.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
[yann.morin.1998@anciens.enib.fr: for 32-bit, default CT_TARGET_ARCH is OK]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     1 # ARM specific configuration file
     2 
     3 config ARCH_ARM_MODE
     4     string
     5     default "arm"   if ARCH_ARM_MODE_ARM
     6     default "thumb" if ARCH_ARM_MODE_THUMB
     7 
     8 choice
     9     bool
    10     prompt "Default instruction set mode"
    11     default ARCH_ARM_MODE_ARM
    12 
    13 config ARCH_ARM_MODE_ARM
    14     bool
    15     prompt "arm"
    16     help
    17       Defaults to emitting instructions in the ARM mode.
    18 
    19 config ARCH_ARM_MODE_THUMB
    20     bool
    21     prompt "thumb (EXPERIMENTAL)"
    22     depends on EXPERIMENTAL
    23     help
    24       Defaults to emitting instructions in the THUMB mode.
    25 
    26 endchoice
    27 
    28 config ARCH_ARM_INTERWORKING
    29     bool
    30     prompt "Use Thumb-interworking (READ HELP)"
    31     default n
    32     depends on EXPERIMENTAL
    33     help
    34       Excerpt from the gcc manual:
    35       
    36       > Generate code which supports calling between the ARM and Thumb
    37       > instruction sets. Without this option the two instruction sets
    38       > cannot be reliably used inside one program. The default is
    39       > [not to use interwork], since slightly larger code is generated
    40       > when [interwork] is specified.
    41 
    42 config ARCH_ARM_EABI
    43     bool
    44     prompt "Use EABI"
    45     default y
    46     help
    47       Set up the toolchain so that it generates EABI-compliant binaries.
    48 
    49 config ARCH_ARM_ABI_OK
    50     bool
    51     default y
    52     depends on ! ARCH_ARM_EABI
    53     select ARCH_SUPPORT_ABI