From 26202873bb51fafdaa51be3e8de7aab9beb49f70 Mon Sep 17 00:00:00 2001 From: Hans-Christian Noren Egtvedt Date: Sun, 26 Feb 2017 12:56:39 +0100 Subject: avr32: remove support for AVR32 architecture MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Håvard Skinnemoen Signed-off-by: Nicolas Ferre Acked-by: Andy Shevchenko Acked-by: Boris Brezillon --- arch/avr32/lib/copy_user.S | 119 --------------------------------------------- 1 file changed, 119 deletions(-) delete mode 100644 arch/avr32/lib/copy_user.S (limited to 'arch/avr32/lib/copy_user.S') diff --git a/arch/avr32/lib/copy_user.S b/arch/avr32/lib/copy_user.S deleted file mode 100644 index 075373471da1..000000000000 --- a/arch/avr32/lib/copy_user.S +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copy to/from userspace with optional address space checking. - * - * Copyright 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 -#include -#include - - /* - * __kernel_size_t - * __copy_user(void *to, const void *from, __kernel_size_t n) - * - * Returns the number of bytes not copied. Might be off by - * max 3 bytes if we get a fault in the main loop. - * - * The address-space checking functions simply fall through to - * the non-checking version. - */ - .text - .align 1 - .global ___copy_from_user - .type ___copy_from_user, @function -___copy_from_user: - branch_if_kernel r8, __copy_user - ret_if_privileged r8, r11, r10, r10 - rjmp __copy_user - .size ___copy_from_user, . - ___copy_from_user - - .global copy_to_user - .type copy_to_user, @function -copy_to_user: - branch_if_kernel r8, __copy_user - ret_if_privileged r8, r12, r10, r10 - .size copy_to_user, . - copy_to_user - - .global __copy_user - .type __copy_user, @function -__copy_user: - mov r9, r11 - andl r9, 3, COH - brne 6f - - /* At this point, from is word-aligned */ -1: sub r10, 4 - brlt 3f - -2: -10: ld.w r8, r11++ -11: st.w r12++, r8 - sub r10, 4 - brge 2b - -3: sub r10, -4 - reteq 0 - - /* - * Handle unaligned count. Need to be careful with r10 here so - * that we return the correct value even if we get a fault - */ -4: -20: ld.ub r8, r11++ -21: st.b r12++, r8 - sub r10, 1 - reteq 0 -22: ld.ub r8, r11++ -23: st.b r12++, r8 - sub r10, 1 - reteq 0 -24: ld.ub r8, r11++ -25: st.b r12++, r8 - retal 0 - - /* Handle unaligned from-pointer */ -6: cp.w r10, 4 - brlt 4b - rsub r9, r9, 4 - -30: ld.ub r8, r11++ -31: st.b r12++, r8 - sub r10, 1 - sub r9, 1 - breq 1b -32: ld.ub r8, r11++ -33: st.b r12++, r8 - sub r10, 1 - sub r9, 1 - breq 1b -34: ld.ub r8, r11++ -35: st.b r12++, r8 - sub r10, 1 - rjmp 1b - .size __copy_user, . - __copy_user - - .section .fixup,"ax" - .align 1 -19: sub r10, -4 -29: retal r10 - - .section __ex_table,"a" - .align 2 - .long 10b, 19b - .long 11b, 19b - .long 20b, 29b - .long 21b, 29b - .long 22b, 29b - .long 23b, 29b - .long 24b, 29b - .long 25b, 29b - .long 30b, 29b - .long 31b, 29b - .long 32b, 29b - .long 33b, 29b - .long 34b, 29b - .long 35b, 29b -- cgit v1.2.1