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| author | Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> | 2017-02-26 12:56:39 +0100 |
|---|---|---|
| committer | Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> | 2017-05-01 09:27:15 +0200 |
| commit | 26202873bb51fafdaa51be3e8de7aab9beb49f70 (patch) | |
| tree | c3ba9451f8fa93e6bd6347318375a7348ecb522f /arch/avr32/kernel/switch_to.S | |
| parent | a351e9b9fc24e982ec2f0e76379a49826036da12 (diff) | |
| download | linux-rt-26202873bb51fafdaa51be3e8de7aab9beb49f70.tar.gz | |
avr32: remove support for AVR32 architecture
This patch drops support for AVR32 architecture from the Linux kernel.
The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.
Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).
Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.
Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.
Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Diffstat (limited to 'arch/avr32/kernel/switch_to.S')
| -rw-r--r-- | arch/avr32/kernel/switch_to.S | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/arch/avr32/kernel/switch_to.S b/arch/avr32/kernel/switch_to.S deleted file mode 100644 index a48d046723c5..000000000000 --- a/arch/avr32/kernel/switch_to.S +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Copyright (C) 2004-2006 Atmel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <asm/sysreg.h> - - .text - .global __switch_to - .type __switch_to, @function - - /* Switch thread context from "prev" to "next", returning "last" - * r12 : prev - * r11 : &prev->thread + 1 - * r10 : &next->thread - */ -__switch_to: - stm --r11, r0,r1,r2,r3,r4,r5,r6,r7,sp,lr - mfsr r9, SYSREG_SR - st.w --r11, r9 - ld.w r8, r10++ - /* - * schedule() may have been called from a mode with a different - * set of registers. Make sure we don't lose anything here. - */ - pushm r10,r12 - mtsr SYSREG_SR, r8 - frs /* flush the return stack */ - sub pc, -2 /* flush the pipeline */ - popm r10,r12 - ldm r10++, r0,r1,r2,r3,r4,r5,r6,r7,sp,pc - .size __switch_to, . - __switch_to |