diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2018-03-07 22:18:39 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2018-03-07 22:18:39 +0100 |
| commit | b67aea2bbab780e412b8af3386cc9f78f61a4cac (patch) | |
| tree | 93fb3f88d71a431d5a1d2203635546986dacf3f4 /Documentation | |
| parent | 661e50bc853209e41a5c14a290ca4decc43cbfd1 (diff) | |
| parent | 8d06c3302635f0ab426937f2bb10e9b9c34087e4 (diff) | |
Merge tag 'metag_remove_2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jhogan/metag into asm-generic
Remove metag architecture
These patches remove the metag architecture and tightly dependent
drivers from the kernel. With the 4.16 kernel the ancient gcc 4.2.4
based metag toolchain we have been using is hitting compiler bugs, so
now seems a good time to drop it altogether.
* tag 'metag_remove_2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
i2c: img-scb: Drop METAG dependency
media: img-ir: Drop METAG dependency
watchdog: imgpdc: Drop METAG dependency
MAINTAINERS/CREDITS: Drop METAG ARCHITECTURE
tty: Remove metag DA TTY and console driver
clocksource: Remove metag generic timer driver
irqchip: Remove metag irqchip drivers
Drop a bunch of metag references
docs: Remove remaining references to metag
docs: Remove metag docs
metag: Remove arch/metag/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation')
49 files changed, 1 insertions, 340 deletions
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX index 7f3a0728ccf2..eae1e7193f50 100644 --- a/Documentation/00-INDEX +++ b/Documentation/00-INDEX @@ -276,8 +276,6 @@ memory-hotplug.txt - Hotpluggable memory support, how to use and current status. men-chameleon-bus.txt - info on MEN chameleon bus. -metag/ - - directory with info about Linux on Meta architecture. mic/ - Intel Many Integrated Core (MIC) architecture device driver. mips/ diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 1d1d53f85ddd..30a8d0635898 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1347,10 +1347,6 @@ If specified, z/VM IUCV HVC accepts connections from listed z/VM user IDs only. - hwthread_map= [METAG] Comma-separated list of Linux cpu id to - hardware thread id mappings. - Format: <cpu>:<hwthread> - keep_bootcon [KNL] Do not unregister boot console at start. This is only useful for debugging when something happens in the window diff --git a/Documentation/dev-tools/kmemleak.rst b/Documentation/dev-tools/kmemleak.rst index cb8862659178..e6f51260ff32 100644 --- a/Documentation/dev-tools/kmemleak.rst +++ b/Documentation/dev-tools/kmemleak.rst @@ -8,7 +8,7 @@ with the difference that the orphan objects are not freed but only reported via /sys/kernel/debug/kmemleak. A similar method is used by the Valgrind tool (``memcheck --leak-check``) to detect the memory leaks in user-space applications. -Kmemleak is supported on x86, arm, powerpc, sparc, sh, microblaze, ppc, mips, s390, metag and tile. +Kmemleak is supported on x86, arm, powerpc, sparc, sh, microblaze, ppc, mips, s390 and tile. Usage ----- diff --git a/Documentation/devicetree/bindings/metag/meta.txt b/Documentation/devicetree/bindings/metag/meta.txt deleted file mode 100644 index f4457f57ab08..000000000000 --- a/Documentation/devicetree/bindings/metag/meta.txt +++ /dev/null @@ -1,30 +0,0 @@ -* Meta Processor Binding - -This binding specifies what properties must be available in the device tree -representation of a Meta Processor Core, which is the root node in the tree. - -Required properties: - - - compatible: Specifies the compatibility list for the Meta processor. - The type shall be <string> and the value shall include "img,meta". - -Optional properties: - - - clocks: Clock consumer specifiers as described in - Documentation/devicetree/bindings/clock/clock-bindings.txt - - - clock-names: Clock consumer names as described in - Documentation/devicetree/bindings/clock/clock-bindings.txt. - -Clocks are identified by name. Valid clocks are: - - - "core": The Meta core clock from which the Meta timers are derived. - -* Examples - -/ { - compatible = "toumaz,tz1090", "img,meta"; - - clocks = <&meta_core_clk>; - clock-names = "core"; -}; diff --git a/Documentation/features/core/BPF-JIT/arch-support.txt b/Documentation/features/core/BPF-JIT/arch-support.txt index 5575d2d09625..b0634ec01881 100644 --- a/Documentation/features/core/BPF-JIT/arch-support.txt +++ b/Documentation/features/core/BPF-JIT/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/core/generic-idle-thread/arch-support.txt b/Documentation/features/core/generic-idle-thread/arch-support.txt index abb5f271a792..e2a1a385efd3 100644 --- a/Documentation/features/core/generic-idle-thread/arch-support.txt +++ b/Documentation/features/core/generic-idle-thread/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | ok | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/core/jump-labels/arch-support.txt b/Documentation/features/core/jump-labels/arch-support.txt index dbdaffcc5110..dafcea38fe5e 100644 --- a/Documentation/features/core/jump-labels/arch-support.txt +++ b/Documentation/features/core/jump-labels/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/core/tracehook/arch-support.txt b/Documentation/features/core/tracehook/arch-support.txt index dfb638c2f842..3d7886fcb6a9 100644 --- a/Documentation/features/core/tracehook/arch-support.txt +++ b/Documentation/features/core/tracehook/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | ok | | microblaze: | TODO | | mips: | ok | | mn10300: | ok | diff --git a/Documentation/features/debug/KASAN/arch-support.txt b/Documentation/features/debug/KASAN/arch-support.txt index 3406fae833c3..63598b0e8ea6 100644 --- a/Documentation/features/debug/KASAN/arch-support.txt +++ b/Documentation/features/debug/KASAN/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/debug/gcov-profile-all/arch-support.txt b/Documentation/features/debug/gcov-profile-all/arch-support.txt index 830dbe801aaf..13b3b3dfe7f2 100644 --- a/Documentation/features/debug/gcov-profile-all/arch-support.txt +++ b/Documentation/features/debug/gcov-profile-all/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | ok | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/debug/kgdb/arch-support.txt b/Documentation/features/debug/kgdb/arch-support.txt index 0217bf6e942d..cb4792cf0f98 100644 --- a/Documentation/features/debug/kgdb/arch-support.txt +++ b/Documentation/features/debug/kgdb/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | ok | | mips: | ok | | mn10300: | ok | diff --git a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt index 1e84be3c142e..2046539489fe 100644 --- a/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt +++ b/Documentation/features/debug/kprobes-on-ftrace/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/debug/kprobes/arch-support.txt b/Documentation/features/debug/kprobes/arch-support.txt index 529f66eda679..bfb3546a70d0 100644 --- a/Documentation/features/debug/kprobes/arch-support.txt +++ b/Documentation/features/debug/kprobes/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/debug/kretprobes/arch-support.txt b/Documentation/features/debug/kretprobes/arch-support.txt index 43353242e439..cb2213bfadc5 100644 --- a/Documentation/features/debug/kretprobes/arch-support.txt +++ b/Documentation/features/debug/kretprobes/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/debug/optprobes/arch-support.txt b/Documentation/features/debug/optprobes/arch-support.txt index f559f1ba5416..219aa64ca3f5 100644 --- a/Documentation/features/debug/optprobes/arch-support.txt +++ b/Documentation/features/debug/optprobes/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/debug/stackprotector/arch-support.txt b/Documentation/features/debug/stackprotector/arch-support.txt index 59a4c9ffb7f3..904864c3f18c 100644 --- a/Documentation/features/debug/stackprotector/arch-support.txt +++ b/Documentation/features/debug/stackprotector/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/debug/uprobes/arch-support.txt b/Documentation/features/debug/uprobes/arch-support.txt index 53ed42b0e7e5..d092f000e6bb 100644 --- a/Documentation/features/debug/uprobes/arch-support.txt +++ b/Documentation/features/debug/uprobes/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/debug/user-ret-profiler/arch-support.txt b/Documentation/features/debug/user-ret-profiler/arch-support.txt index 149443936de9..9e9e195b6d30 100644 --- a/Documentation/features/debug/user-ret-profiler/arch-support.txt +++ b/Documentation/features/debug/user-ret-profiler/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/io/dma-api-debug/arch-support.txt b/Documentation/features/io/dma-api-debug/arch-support.txt index 6be920643be6..ba9e169859c4 100644 --- a/Documentation/features/io/dma-api-debug/arch-support.txt +++ b/Documentation/features/io/dma-api-debug/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | ok | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/io/dma-contiguous/arch-support.txt b/Documentation/features/io/dma-contiguous/arch-support.txt index 0eb08e1e32b8..35b501f2c117 100644 --- a/Documentation/features/io/dma-contiguous/arch-support.txt +++ b/Documentation/features/io/dma-contiguous/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/io/sg-chain/arch-support.txt b/Documentation/features/io/sg-chain/arch-support.txt index 514ad3468aa5..42c078dff18b 100644 --- a/Documentation/features/io/sg-chain/arch-support.txt +++ b/Documentation/features/io/sg-chain/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/lib/strncasecmp/arch-support.txt b/Documentation/features/lib/strncasecmp/arch-support.txt index 532c6f0fc15c..b10c21f14739 100644 --- a/Documentation/features/lib/strncasecmp/arch-support.txt +++ b/Documentation/features/lib/strncasecmp/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/locking/cmpxchg-local/arch-support.txt b/Documentation/features/locking/cmpxchg-local/arch-support.txt index f3eec26c8cf8..3b87fd37bae8 100644 --- a/Documentation/features/locking/cmpxchg-local/arch-support.txt +++ b/Documentation/features/locking/cmpxchg-local/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/locking/lockdep/arch-support.txt b/Documentation/features/locking/lockdep/arch-support.txt index 9756abc680a7..cefcd720f04e 100644 --- a/Documentation/features/locking/lockdep/arch-support.txt +++ b/Documentation/features/locking/lockdep/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | ok | | microblaze: | ok | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/locking/queued-rwlocks/arch-support.txt b/Documentation/features/locking/queued-rwlocks/arch-support.txt index 62f4ee5c156c..da6c7e37141c 100644 --- a/Documentation/features/locking/queued-rwlocks/arch-support.txt +++ b/Documentation/features/locking/queued-rwlocks/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/locking/queued-spinlocks/arch-support.txt b/Documentation/features/locking/queued-spinlocks/arch-support.txt index 321b32f6e63c..1e5dbcdd1c76 100644 --- a/Documentation/features/locking/queued-spinlocks/arch-support.txt +++ b/Documentation/features/locking/queued-spinlocks/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/locking/rwsem-optimized/arch-support.txt b/Documentation/features/locking/rwsem-optimized/arch-support.txt index 79bfa4d6e41f..b79e92288112 100644 --- a/Documentation/features/locking/rwsem-optimized/arch-support.txt +++ b/Documentation/features/locking/rwsem-optimized/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/perf/kprobes-event/arch-support.txt b/Documentation/features/perf/kprobes-event/arch-support.txt index 00f1606bbf45..6418ccc6fc34 100644 --- a/Documentation/features/perf/kprobes-event/arch-support.txt +++ b/Documentation/features/perf/kprobes-event/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/perf/perf-regs/arch-support.txt b/Documentation/features/perf/perf-regs/arch-support.txt index 7d516eacf7b9..3b3392ac6466 100644 --- a/Documentation/features/perf/perf-regs/arch-support.txt +++ b/Documentation/features/perf/perf-regs/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/perf/perf-stackdump/arch-support.txt b/Documentation/features/perf/perf-stackdump/arch-support.txt index f974b8df5d82..4594cb28fbc8 100644 --- a/Documentation/features/perf/perf-stackdump/arch-support.txt +++ b/Documentation/features/perf/perf-stackdump/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/sched/membarrier-sync-core/arch-support.txt b/Documentation/features/sched/membarrier-sync-core/arch-support.txt index 2c815a7f1ba7..42eaab4d439d 100644 --- a/Documentation/features/sched/membarrier-sync-core/arch-support.txt +++ b/Documentation/features/sched/membarrier-sync-core/arch-support.txt @@ -42,7 +42,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/sched/numa-balancing/arch-support.txt b/Documentation/features/sched/numa-balancing/arch-support.txt index 1d3c0f669152..4e67833aae66 100644 --- a/Documentation/features/sched/numa-balancing/arch-support.txt +++ b/Documentation/features/sched/numa-balancing/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | .. | | m68k: | .. | - | metag: | .. | | microblaze: | .. | | mips: | TODO | | mn10300: | .. | diff --git a/Documentation/features/seccomp/seccomp-filter/arch-support.txt b/Documentation/features/seccomp/seccomp-filter/arch-support.txt index a32d5b207679..c5d8b397a693 100644 --- a/Documentation/features/seccomp/seccomp-filter/arch-support.txt +++ b/Documentation/features/seccomp/seccomp-filter/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/time/arch-tick-broadcast/arch-support.txt b/Documentation/features/time/arch-tick-broadcast/arch-support.txt index caee8f64d1bc..9e4999136881 100644 --- a/Documentation/features/time/arch-tick-broadcast/arch-support.txt +++ b/Documentation/features/time/arch-tick-broadcast/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/time/clockevents/arch-support.txt b/Documentation/features/time/clockevents/arch-support.txt index 1cd87f6cd07d..f90cb64c640b 100644 --- a/Documentation/features/time/clockevents/arch-support.txt +++ b/Documentation/features/time/clockevents/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | ok | - | metag: | ok | | microblaze: | ok | | mips: | ok | | mn10300: | ok | diff --git a/Documentation/features/time/context-tracking/arch-support.txt b/Documentation/features/time/context-tracking/arch-support.txt index e6d7c7b2253c..eb4e5d32a2e9 100644 --- a/Documentation/features/time/context-tracking/arch-support.txt +++ b/Documentation/features/time/context-tracking/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/time/irq-time-acct/arch-support.txt b/Documentation/features/time/irq-time-acct/arch-support.txt index 15c6071788ae..02b7441f360f 100644 --- a/Documentation/features/time/irq-time-acct/arch-support.txt +++ b/Documentation/features/time/irq-time-acct/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | .. | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/time/modern-timekeeping/arch-support.txt b/Documentation/features/time/modern-timekeeping/arch-support.txt index baee7611ba3d..b3eb6fe6bc27 100644 --- a/Documentation/features/time/modern-timekeeping/arch-support.txt +++ b/Documentation/features/time/modern-timekeeping/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | ok | | microblaze: | ok | | mips: | ok | | mn10300: | ok | diff --git a/Documentation/features/time/virt-cpuacct/arch-support.txt b/Documentation/features/time/virt-cpuacct/arch-support.txt index 9129530cb73c..a1bd77fd723a 100644 --- a/Documentation/features/time/virt-cpuacct/arch-support.txt +++ b/Documentation/features/time/virt-cpuacct/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/vm/ELF-ASLR/arch-support.txt b/Documentation/features/vm/ELF-ASLR/arch-support.txt index f6829af3255f..3f926177833c 100644 --- a/Documentation/features/vm/ELF-ASLR/arch-support.txt +++ b/Documentation/features/vm/ELF-ASLR/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/vm/PG_uncached/arch-support.txt b/Documentation/features/vm/PG_uncached/arch-support.txt index 1a09ea99d486..4c8f65d525d7 100644 --- a/Documentation/features/vm/PG_uncached/arch-support.txt +++ b/Documentation/features/vm/PG_uncached/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/vm/THP/arch-support.txt b/Documentation/features/vm/THP/arch-support.txt index d170e6236503..d121dc2e3e5e 100644 --- a/Documentation/features/vm/THP/arch-support.txt +++ b/Documentation/features/vm/THP/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | .. | | m68k: | .. | - | metag: | TODO | | microblaze: | .. | | mips: | ok | | mn10300: | .. | diff --git a/Documentation/features/vm/TLB/arch-support.txt b/Documentation/features/vm/TLB/arch-support.txt index abfab4080a91..af233d2d82cf 100644 --- a/Documentation/features/vm/TLB/arch-support.txt +++ b/Documentation/features/vm/TLB/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | .. | - | metag: | TODO | | microblaze: | .. | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/vm/huge-vmap/arch-support.txt b/Documentation/features/vm/huge-vmap/arch-support.txt index f81f09b22b08..45c74fbe6805 100644 --- a/Documentation/features/vm/huge-vmap/arch-support.txt +++ b/Documentation/features/vm/huge-vmap/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/vm/ioremap_prot/arch-support.txt b/Documentation/features/vm/ioremap_prot/arch-support.txt index 0cc3e11c42e2..6cd436af0cc8 100644 --- a/Documentation/features/vm/ioremap_prot/arch-support.txt +++ b/Documentation/features/vm/ioremap_prot/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/features/vm/numa-memblock/arch-support.txt b/Documentation/features/vm/numa-memblock/arch-support.txt index 9a3fdac42ce1..2db895856da6 100644 --- a/Documentation/features/vm/numa-memblock/arch-support.txt +++ b/Documentation/features/vm/numa-memblock/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | ok | | m32r: | TODO | | m68k: | .. | - | metag: | ok | | microblaze: | ok | | mips: | ok | | mn10300: | TODO | diff --git a/Documentation/features/vm/pte_special/arch-support.txt b/Documentation/features/vm/pte_special/arch-support.txt index dfaa39e664ff..ccb15b6da42f 100644 --- a/Documentation/features/vm/pte_special/arch-support.txt +++ b/Documentation/features/vm/pte_special/arch-support.txt @@ -19,7 +19,6 @@ | ia64: | TODO | | m32r: | TODO | | m68k: | TODO | - | metag: | TODO | | microblaze: | TODO | | mips: | TODO | | mn10300: | TODO | diff --git a/Documentation/metag/00-INDEX b/Documentation/metag/00-INDEX deleted file mode 100644 index db11c513bd5c..000000000000 --- a/Documentation/metag/00-INDEX +++ /dev/null @@ -1,4 +0,0 @@ -00-INDEX - - this file -kernel-ABI.txt - - Documents metag ABI details diff --git a/Documentation/metag/kernel-ABI.txt b/Documentation/metag/kernel-ABI.txt deleted file mode 100644 index 628216603198..000000000000 --- a/Documentation/metag/kernel-ABI.txt +++ /dev/null @@ -1,256 +0,0 @@ - ========================== - KERNEL ABIS FOR METAG ARCH - ========================== - -This document describes the Linux ABIs for the metag architecture, and has the -following sections: - - (*) Outline of registers - (*) Userland registers - (*) Kernel registers - (*) System call ABI - (*) Calling conventions - - -==================== -OUTLINE OF REGISTERS -==================== - -The main Meta core registers are arranged in units: - - UNIT Type DESCRIPTION GP EXT PRIV GLOBAL - ======= ======= =============== ======= ======= ======= ======= - CT Special Control unit - D0 General Data unit 0 0-7 8-15 16-31 16-31 - D1 General Data unit 1 0-7 8-15 16-31 16-31 - A0 General Address unit 0 0-3 4-7 8-15 8-15 - A1 General Address unit 1 0-3 4-7 8-15 8-15 - PC Special PC unit 0 1 - PORT Special Ports - TR Special Trigger unit 0-7 - TT Special Trace unit 0-5 - FX General FP unit 0-15 - -GP registers form part of the main context. - -Extended context registers (EXT) may not be present on all hardware threads and -can be context switched if support is enabled and the appropriate bits are set -in e.g. the D0.8 register to indicate what extended state to preserve. - -Global registers are shared between threads and are privilege protected. - -See arch/metag/include/asm/metag_regs.h for definitions relating to core -registers and the fields and bits they contain. See the TRMs for further details -about special registers. - -Several special registers are preserved in the main context, these are the -interesting ones: - - REG (ALIAS) PURPOSE - ======================= =============================================== - CT.1 (TXMODE) Processor mode bits (particularly for DSP) - CT.2 (TXSTATUS) Condition flags and LSM_STEP (MGET/MSET step) - CT.3 (TXRPT) Branch repeat counter - PC.0 (PC) Program counter - -Some of the general registers have special purposes in the ABI and therefore -have aliases: - - D0 REG (ALIAS) PURPOSE D1 REG (ALIAS) PURPOSE - =============== =============== =============== ======================= - D0.0 (D0Re0) 32bit result D1.0 (D1Re0) Top half of 64bit result - D0.1 (D0Ar6) Argument 6 D1.1 (D1Ar5) Argument 5 - D0.2 (D0Ar4) Argument 4 D1.2 (D1Ar3) Argument 3 - D0.3 (D0Ar2) Argument 2 D1.3 (D1Ar1) Argument 1 - D0.4 (D0FrT) Frame temp D1.4 (D1RtP) Return pointer - D0.5 Call preserved D1.5 Call preserved - D0.6 Call preserved D1.6 Call preserved - D0.7 Call preserved D1.7 Call preserved - - A0 REG (ALIAS) PURPOSE A1 REG (ALIAS) PURPOSE - =============== =============== =============== ======================= - A0.0 (A0StP) Stack pointer A1.0 (A1GbP) Global base pointer - A0.1 (A0FrP) Frame pointer A1.1 (A1LbP) Local base pointer - A0.2 A1.2 - A0.3 A1.3 - - -================== -USERLAND REGISTERS -================== - -All the general purpose D0, D1, A0, A1 registers are preserved when entering the -kernel (including asynchronous events such as interrupts and timer ticks) except -the following which have special purposes in the ABI: - - REGISTERS WHEN STATUS PURPOSE - =============== ======= =============== =============================== - D0.8 DSP Preserved ECH, determines what extended - DSP state to preserve. - A0.0 (A0StP) ALWAYS Preserved Stack >= A0StP may be clobbered - at any time by the creation of a - signal frame. - A1.0 (A1GbP) SMP Clobbered Used as temporary for loading - kernel stack pointer and saving - core context. - A0.15 !SMP Protected Stores kernel stack pointer. - A1.15 ALWAYS Protected Stores kernel base pointer. - -On UP A0.15 is used to store the kernel stack pointer for storing the userland -context. A0.15 is global between hardware threads though which means it cannot -be used on SMP for this purpose. Since no protected local registers are -available A1GbP is reserved for use as a temporary to allow a percpu stack -pointer to be loaded for storing the rest of the context. - - -================ -KERNEL REGISTERS -================ - -When in the kernel the following registers have special purposes in the ABI: - - REGISTERS WHEN STATUS PURPOSE - =============== ======= =============== =============================== - A0.0 (A0StP) ALWAYS Preserved Stack >= A0StP may be clobbered - at any time by the creation of - an irq signal frame. - A1.0 (A1GbP) ALWAYS Preserved Reserved (kernel base pointer). - - -=============== -SYSTEM CALL ABI -=============== - -When a system call is made, the following registers are effective: - - REGISTERS CALL RETURN - =============== ======================= =============================== - D0.0 (D0Re0) Return value (or -errno) - D1.0 (D1Re0) System call number Clobbered - D0.1 (D0Ar6) Syscall arg #6 Preserved - D1.1 (D1Ar5) Syscall arg #5 Preserved - D0.2 (D0Ar4) Syscall arg #4 Preserved - D1.2 (D1Ar3) Syscall arg #3 Preserved - D0.3 (D0Ar2) Syscall arg #2 Preserved - D1.3 (D1Ar1) Syscall arg #1 Preserved - -Due to the limited number of argument registers and some system calls with badly -aligned 64-bit arguments, 64-bit values are always packed in consecutive -arguments, even if this is contrary to the normal calling conventions (where the -two halves would go in a matching pair of data registers). - -For example fadvise64_64 usually has the signature: - - long sys_fadvise64_64(i32 fd, i64 offs, i64 len, i32 advice); - -But for metag fadvise64_64 is wrapped so that the 64-bit arguments are packed: - - long sys_fadvise64_64_metag(i32 fd, i32 offs_lo, - i32 offs_hi, i32 len_lo, - i32 len_hi, i32 advice) - -So the arguments are packed in the registers like this: - - D0 REG (ALIAS) VALUE D1 REG (ALIAS) VALUE - =============== =============== =============== ======================= - D0.1 (D0Ar6) advice D1.1 (D1Ar5) hi(len) - D0.2 (D0Ar4) lo(len) D1.2 (D1Ar3) hi(offs) - D0.3 (D0Ar2) lo(offs) D1.3 (D1Ar1) fd - - -=================== -CALLING CONVENTIONS -=================== - -These calling conventions apply to both user and kernel code. The stack grows -from low addresses to high addresses in the metag ABI. The stack pointer (A0StP) -should always point to the next free address on the stack and should at all -times be 64-bit aligned. The following registers are effective at the point of a -call: - - REGISTERS CALL RETURN - =============== ======================= =============================== - D0.0 (D0Re0) 32bit return value - D1.0 (D1Re0) Upper half of 64bit return value - D0.1 (D0Ar6) 32bit argument #6 Clobbered - D1.1 (D1Ar5) 32bit argument #5 Clobbered - D0.2 (D0Ar4) 32bit argument #4 Clobbered - D1.2 (D1Ar3) 32bit argument #3 Clobbered - D0.3 (D0Ar2) 32bit argument #2 Clobbered - D1.3 (D1Ar1) 32bit argument #1 Clobbered - D0.4 (D0FrT) Clobbered - D1.4 (D1RtP) Return pointer Clobbered - D{0-1}.{5-7} Preserved - A0.0 (A0StP) Stack pointer Preserved - A1.0 (A0GbP) Preserved - A0.1 (A0FrP) Frame pointer Preserved - A1.1 (A0LbP) Preserved - A{0-1},{2-3} Clobbered - -64-bit arguments are placed in matching pairs of registers (i.e. the same -register number in both D0 and D1 units), with the least significant half in D0 -and the most significant half in D1, leaving a gap where necessary. Further -arguments are stored on the stack in reverse order (earlier arguments at higher -addresses): - - ADDRESS 0 1 2 3 4 5 6 7 - =============== ===== ===== ===== ===== ===== ===== ===== ===== - A0StP --> - A0StP-0x08 32bit argument #8 32bit argument #7 - A0StP-0x10 32bit argument #10 32bit argument #9 - -Function prologues tend to look a bit like this: - - /* If frame pointer in use, move it to frame temp register so it can be - easily pushed onto stack */ - MOV D0FrT,A0FrP - - /* If frame pointer in use, set it to stack pointer */ - ADD A0FrP,A0StP,#0 - - /* Preserve D0FrT, D1RtP, D{0-1}.{5-7} on stack, incrementing A0StP */ - MSETL [A0StP++],D0FrT,D0.5,D0.6,D0.7 - - /* Allocate some stack space for local variables */ - ADD A0StP,A0StP,#0x10 - -At this point the stack would look like this: - - ADDRESS 0 1 2 3 4 5 6 7 - =============== ===== ===== ===== ===== ===== ===== ===== ===== - A0StP --> - A0StP-0x08 - A0StP-0x10 - A0StP-0x18 Old D0.7 Old D1.7 - A0StP-0x20 Old D0.6 Old D1.6 - A0StP-0x28 Old D0.5 Old D1.5 - A0FrP --> Old A0FrP (frame ptr) Old D1RtP (return ptr) - A0FrP-0x08 32bit argument #8 32bit argument #7 - A0FrP-0x10 32bit argument #10 32bit argument #9 - -Function epilogues tend to differ depending on the use of a frame pointer. An -example of a frame pointer epilogue: - - /* Restore D0FrT, D1RtP, D{0-1}.{5-7} from stack, incrementing A0FrP */ - MGETL D0FrT,D0.5,D0.6,D0.7,[A0FrP++] - /* Restore stack pointer to where frame pointer was before increment */ - SUB A0StP,A0FrP,#0x20 - /* Restore frame pointer from frame temp */ - MOV A0FrP,D0FrT - /* Return to caller via restored return pointer */ - MOV PC,D1RtP - -If the function hasn't touched the frame pointer, MGETL cannot be safely used -with A0StP as it always increments and that would expose the stack to clobbering -by interrupts (kernel) or signals (user). Therefore it's common to see the MGETL -split into separate GETL instructions: - - /* Restore D0FrT, D1RtP, D{0-1}.{5-7} from stack */ - GETL D0FrT,D1RtP,[A0StP+#-0x30] - GETL D0.5,D1.5,[A0StP+#-0x28] - GETL D0.6,D1.6,[A0StP+#-0x20] - GETL D0.7,D1.7,[A0StP+#-0x18] - /* Restore stack pointer */ - SUB A0StP,A0StP,#0x30 - /* Return to caller via restored return pointer */ - MOV PC,D1RtP |