linux.git/arch/m68k/Kconfig, branch master

m68k: move CONFIG_FPU set to per-CPU configuration

2016-09-26T02:02:58+00:00

Move the selection of CONFIG_FPU to each CPU type configuration. Currently for m68k we have a global set of CONFIG_FPU based on if CONFIG_MMU is enabled or not. There is at least one CPU family we support (m5441x) that has an MMU but has no FPU hardware. So we need to be able to have CONFIG_MMU set and CONFIG_FPU not set. Whether we build for a CPU with MMU enabled or not doesn't change the fact that it has FPU hardware support. Our current non-MMU builds have never had CONIG_FPU enabled - and in fact the kernel will not compile with that set and CONFIG_MMU not set at the moment. It is easy enough to fix this - but it would involve a structure change to sigcontext.h, and that is a user space exported header (so ABI change). This change makes no configuration visible changes, and all configs end up with the same configuration settings as before. This change based on changes and discussion from Yannick Gicquel . Signed-off-by: Greg Ungerer

kexec: split kexec_load syscall from kexec core code

2015-09-10T20:29:01+00:00

There are two kexec load syscalls, kexec_load another and kexec_file_load. kexec_file_load has been splited as kernel/kexec_file.c. In this patch I split kexec_load syscall code to kernel/kexec.c. And add a new kconfig option KEXEC_CORE, so we can disable kexec_load and use kexec_file_load only, or vice verse. The original requirement is from Ted Ts'o, he want kexec kernel signature being checked with CONFIG_KEXEC_VERIFY_SIG enabled. But kexec-tools use kexec_load syscall can bypass the checking. Vivek Goyal proposed to create a common kconfig option so user can compile in only one syscall for loading kexec kernel. KEXEC/KEXEC_FILE selects KEXEC_CORE so that old config files still work. Because there's general code need CONFIG_KEXEC_CORE, so I updated all the architecture Kconfig with a new option KEXEC_CORE, and let KEXEC selects KEXEC_CORE in arch Kconfig. Also updated general kernel code with to kexec_load syscall. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Dave Young Cc: Eric W. Biederman Cc: Vivek Goyal Cc: Petr Tesarik Cc: Theodore Ts'o Cc: Josh Boyer Cc: David Howells Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

m68k: mark PMD folded and expose number of page table levels

2015-04-14T23:49:02+00:00

We would want to use number of page table level to define mm_struct. Let's expose it as CONFIG_PGTABLE_LEVELS. Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page table levels folded. Signed-off-by: Kirill A. Shutemov Cc: Geert Uytterhoeven Tested-by: Guenter Roeck Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

kexec: remove CONFIG_KEXEC dependency on crypto

2014-08-29T23:28:16+00:00

New system call depends on crypto. As it did not have a separate config option, CONFIG_KEXEC was modified to select CRYPTO and CRYPTO_SHA256. But now previous patch introduced a new config option for new syscall. So CONFIG_KEXEC does not require crypto. Remove that dependency. Signed-off-by: Vivek Goyal Cc: Eric Biederman Cc: H. Peter Anvin Cc: Shaun Ruffell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

kexec: load and relocate purgatory at kernel load time

2014-08-08T22:57:32+00:00

Load purgatory code in RAM and relocate it based on the location. Relocation code has been inspired by module relocation code and purgatory relocation code in kexec-tools. Also compute the checksums of loaded kexec segments and store them in purgatory. Arch independent code provides this functionality so that arch dependent bootloaders can make use of it. Helper functions are provided to get/set symbol values in purgatory which are used by bootloaders later to set things like stack and entry point of second kernel etc. Signed-off-by: Vivek Goyal Cc: Borislav Petkov Cc: Michael Kerrisk Cc: Yinghai Lu Cc: Eric Biederman Cc: H. Peter Anvin Cc: Matthew Garrett Cc: Greg Kroah-Hartman Cc: Dave Young Cc: WANG Chao Cc: Baoquan He Cc: Andy Lutomirski Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP

2014-04-07T23:36:11+00:00

If the renamed symbol is defined lib/iomap.c implements ioport_map and ioport_unmap and currently (nearly) all platforms define the port accessor functions outb/inb and friend unconditionally. So HAS_IOPORT_MAP is the better name for this. Consequently NO_IOPORT is renamed to NO_IOPORT_MAP. The motivation for this change is to reintroduce a symbol HAS_IOPORT that signals if outb/int et al are available. I will address that at least one merge window later though to keep surprises to a minimum and catch new introductions of (HAS|NO)_IOPORT. The changes in this commit were done using: $ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/' Signed-off-by: Uwe Kleine-König Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

m68k: Skip futex_atomic_cmpxchg_inatomic() test

2014-03-06T10:35:17+00:00

Skip the futex_atomic_cmpxchg_inatomic() test in futex_init(). It causes a fatal exception on 68030 (and presumably 68020 also). Signed-off-by: Finn Thain Acked-by: Geert Uytterhoeven Link: http://lkml.kernel.org/r/alpine.LNX.2.00.1403061006440.5525@nippy.intranet Signed-off-by: Thomas Gleixner

m68k: Add support to export bootinfo in procfs

2013-12-08T10:01:48+00:00

Add optional support to export the bootinfo used to boot the kernel in a "bootinfo" file in procfs. This is useful with kexec. This is based on the similar feature for ATAGS on ARM. Signed-off-by: Geert Uytterhoeven

m68k: Add kexec support

2013-12-08T10:01:47+00:00

Signed-off-by: Geert Uytterhoeven

m68k: select ARCH_MIGHT_HAVE_PC_PARPORT

2013-10-23T19:59:52+00:00

Architectures which support CONFIG_PARPORT_PC should select ARCH_MIGHT_HAVE_PC_PARPORT. Signed-off-by: Mark Salter Acked by: Geert Uytterhoeven CC: linux-m68k@lists.linux-m68k.org