mirror of
https://gitlab.com/buildroot.org/buildroot.git
synced 2026-08-01 13:18:36 -09:00
e5c7b43494
Everyone thinks they like ARM but secretly they want to run
Linux on their Megadrive[0].
Building a working toolchain/userland for nommu m68k is a bit
difficult because of the bitrotten tools all over the place and
one big issue is GCC generates code that uses unaligned
accesses that will cause an exception on 68000 machines if you
aren't careful.
Buildroot can easily create a working toolchain and userland
for nommu m68k so why not?
0 - This isn't a joke, I'm working on this. I have u-boot working
on the Megadrive, Linux is already working on a bunch of 68000
machines and I just need to get everything a little bit smaller
to get into 4MB of RAM.
Signed-off-by: Daniel Palmer <daniel@thingy.jp>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
59 lines
997 B
Plaintext
59 lines
997 B
Plaintext
config BR2_ARCH
|
|
default "m68k" if BR2_m68k
|
|
|
|
config BR2_NORMALIZED_ARCH
|
|
default "m68k"
|
|
|
|
config BR2_ENDIAN
|
|
default "BIG"
|
|
|
|
# symbols used to distinguish between m68k and coldfire
|
|
# for gcc multilib
|
|
config BR2_m68k_m68k
|
|
bool
|
|
|
|
config BR2_m68k_cf
|
|
bool
|
|
|
|
# coldfire variants will be added later
|
|
choice
|
|
prompt "Target CPU"
|
|
default BR2_m68k_68040
|
|
depends on BR2_m68k
|
|
help
|
|
Specific CPU variant to use
|
|
|
|
config BR2_m68k_68000
|
|
bool "68000"
|
|
select BR2_m68k_m68k
|
|
select BR2_SOFT_FLOAT
|
|
|
|
config BR2_m68k_68030
|
|
bool "68030"
|
|
select BR2_m68k_m68k
|
|
select BR2_USE_MMU
|
|
|
|
config BR2_m68k_68040
|
|
bool "68040"
|
|
select BR2_m68k_m68k
|
|
select BR2_USE_MMU
|
|
|
|
config BR2_m68k_cf5208
|
|
bool "5208"
|
|
select BR2_m68k_cf
|
|
select BR2_SOFT_FLOAT
|
|
|
|
endchoice
|
|
|
|
config BR2_GCC_TARGET_CPU
|
|
default "68000" if BR2_m68k_68000
|
|
default "68030" if BR2_m68k_68030
|
|
default "68040" if BR2_m68k_68040
|
|
default "5208" if BR2_m68k_cf5208
|
|
|
|
config BR2_READELF_ARCH_NAME
|
|
default "MC68000"
|
|
|
|
# vim: ft=kconfig
|
|
# -*- mode:kconfig; -*-
|