avr32: Retire AVR32 for good

AVR32 is gone. It's already more than two years for no support in Buildroot,
even longer there is no support in GCC (last version is heavily patched 4.2.4).

Linux kernel v4.12 got rid of it (and v4.11 didn't build successfully).

There is no good point to keep this support in U-Boot either.

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

1 files changed, 0 insertions, 268 deletions

diff --git a/arch/avr32/cpu/start.S b/arch/avr32/cpu/start.S
deleted file mode 100644
index 14a0269..0000000
--- a/arch/avr32/cpu/start.S
+++ /dev/null
@@ -1,268 +0,0 @@
-/*
- * Copyright (C) 2005-2008 Atmel Corporation
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-#include <asm-offsets.h>
-#include <config.h>
-#include <asm/ptrace.h>
-#include <asm/sysreg.h>
-
-#define SYSREG_MMUCR_I_OFFSET	2
-#define SYSREG_MMUCR_S_OFFSET	4
-
-#define SR_INIT (SYSREG_BIT(GM) | SYSREG_BIT(EM) | SYSREG_BIT(M0))
-/* due to errata (unreliable branch folding) clear FE bit explicitly */
-#define CPUCR_INIT ((SYSREG_BIT(BI) | SYSREG_BIT(BE)	\
-		    | SYSREG_BIT(RE)   |  SYSREG_BIT(IBE)		\
-		    | SYSREG_BIT(IEE)) & ~SYSREG_BIT(FE))
-
-	/*
-	 * To save some space, we use the same entry point for
-	 * exceptions and reset. This avoids lots of alignment padding
-	 * since the reset vector is always suitably aligned.
-	 */
-	.section .exception.text, "ax", @progbits
-	.global	_start
-	.global	_evba
-	.type	_start, @function
-	.type	_evba, @function
-_start:
-	.size	_start, 0
-_evba:
-	.org	0x00
-	rjmp	unknown_exception	/* Unrecoverable exception */
-	.org	0x04
-	rjmp	unknown_exception	/* TLB multiple hit */
-	.org	0x08
-	rjmp	unknown_exception	/* Bus error data fetch */
-	.org	0x0c
-	rjmp	unknown_exception	/* Bus error instruction fetch */
-	.org	0x10
-	rjmp	unknown_exception	/* NMI */
-	.org	0x14
-	rjmp	unknown_exception	/* Instruction address */
-	.org	0x18
-	rjmp	unknown_exception	/* ITLB protection */
-	.org	0x1c
-	rjmp	unknown_exception	/* Breakpoint */
-	.org	0x20
-	rjmp	unknown_exception	/* Illegal opcode */
-	.org	0x24
-	rjmp	unknown_exception	/* Unimplemented instruction */
-	.org	0x28
-	rjmp	unknown_exception	/* Privilege violation */
-	.org	0x2c
-	rjmp	unknown_exception	/* Floating-point */
-	.org	0x30
-	rjmp	unknown_exception	/* Coprocessor absent */
-	.org	0x34
-	rjmp	unknown_exception	/* Data Address (read) */
-	.org	0x38
-	rjmp	unknown_exception	/* Data Address (write) */
-	.org	0x3c
-	rjmp	unknown_exception	/* DTLB Protection (read) */
-	.org	0x40
-	rjmp	unknown_exception	/* DTLB Protection (write) */
-	.org	0x44
-	rjmp	unknown_exception	/* DTLB Modified */
-
-	.org	0x50			/* ITLB Miss */
-	pushm   r8-r12,lr
-	rjmp	1f
-	.org	0x60			/* DTLB Miss (read) */
-	pushm   r8-r12,lr
-	rjmp	1f
-	.org	0x70			/* DTLB Miss (write) */
-	pushm   r8-r12,lr
-1:	mov	r12, sp
-	rcall	mmu_handle_tlb_miss
-	popm	r8-r12,lr
-	brne	unknown_exception
-	rete
-
-	.size	_evba, . - _evba
-
-	.align	2
-	.type	unknown_exception, @function
-unknown_exception:
-	/* Figure out whether we're handling an exception (Exception
-	 * mode) or just booting (Supervisor mode). */
-	csrfcz	SYSREG_M1_OFFSET
-	brcc	at32ap_cpu_bootstrap
-
-	/* This is an exception. Complain. */
-	pushm	r0-r12
-	sub	r8, sp, REG_R12 - REG_R0 - 4
-	mov	r9, lr
-	mfsr	r10, SYSREG_RAR_EX
-	mfsr	r11, SYSREG_RSR_EX
-	pushm	r8-r11
-	mfsr	r12, SYSREG_ECR
-	mov	r11, sp
-	rcall	do_unknown_exception
-1:	rjmp	1b
-
-	/* The COUNT/COMPARE timer interrupt handler */
-	.global	timer_interrupt_handler
-	.type	timer_interrupt_handler,@function
-	.align	2
-timer_interrupt_handler:
-	/*
-	 * Increment timer_overflow and re-write COMPARE with 0xffffffff.
-	 *
-	 * We're running at interrupt level 3, so we don't need to save
-	 * r8-r12 or lr to the stack.
-	 */
-	lda.w	r8, timer_overflow
-	ld.w	r9, r8[0]
-	mov	r10, -1
-	mtsr	SYSREG_COMPARE, r10
-	sub	r9, -1
-	st.w	r8[0], r9
-	rete
-
-	/*
-	 * CPU bootstrap after reset is handled here. SoC code may
-	 * override this in case they need to initialize oscillators,
-	 * etc.
-	 */
-	.section .text.at32ap_cpu_bootstrap, "ax", @progbits
-	.global	at32ap_cpu_bootstrap
-	.weak	at32ap_cpu_bootstrap
-	.type	at32ap_cpu_bootstrap, @function
-	.align	2
-at32ap_cpu_bootstrap:
-	/* Reset the Status Register */
-	mov	r0, lo(SR_INIT)
-	orh	r0, hi(SR_INIT)
-	mtsr	SYSREG_SR, r0
-
-	/* Reset CPUCR and invalidate the BTB */
-	mov	r2, CPUCR_INIT
-	mtsr	SYSREG_CPUCR, r2
-
-	/* Flush the caches */
-	mov	r1, 0
-	cache	r1[4], 8
-	cache	r1[0], 0
-	sync	0
-
-	/* Reset the MMU to default settings */
-	mov	r0, SYSREG_BIT(MMUCR_S) | SYSREG_BIT(MMUCR_I)
-	mtsr	SYSREG_MMUCR, r0
-
-	/* Internal RAM should not need any initialization.  We might
-	   have to initialize external RAM here if the part doesn't
-	   have internal RAM (or we may use the data cache) */
-
-	/* Jump to cacheable segment */
-	lddpc	pc, 1f
-
-	.align	2
-1:	.long	at32ap_low_level_init
-	.size	_start, . - _start
-
-	/* Common CPU bootstrap code after oscillator/cache/etc. init */
-	.section .text.avr32ap_low_level_init, "ax", @progbits
-	.global	at32ap_low_level_init
-	.type	at32ap_low_level_init, @function
-	.align	2
-at32ap_low_level_init:
-	lddpc	sp, sp_init
-
-	/* Initialize the GOT pointer */
-	lddpc	r6, got_init
-3:	rsub	r6, pc
-
-	/* Let's go */
-	rjmp	board_init_f
-
-	.align	2
-	.type	sp_init,@object
-sp_init:
-	.long	CONFIG_SYS_INIT_SP_ADDR
-got_init:
-	.long	3b - _GLOBAL_OFFSET_TABLE_
-
-	/*
-	 * void	relocate_code(new_sp, new_gd, monitor_addr)
-	 *
-	 * Relocate the u-boot image into RAM and continue from there.
-	 * Does not return.
-	 */
-	.section .text.relocate_code,"ax",@progbits
-	.global	relocate_code
-	.type	relocate_code,@function
-relocate_code:
-	mov	sp, r12		/* use new stack */
-	mov	r12, r11	/* save new_gd */
-	mov	r11, r10	/* save destination address */
-
-	/* copy .text section and flush the cache along the way */
-	lda.w	r8, _text
-	lda.w	r9, _etext
-	sub	lr, r10, r8	/* relocation offset */
-
-1:	ldm	r8++, r0-r3
-	stm	r10, r0-r3
-	sub	r10, -16
-	ldm	r8++, r0-r3
-	stm	r10, r0-r3
-	sub	r10, -16
-	cp.w	r8, r9
-	cache	r10[-4], 0x0d	/* dcache clean/invalidate */
-	cache	r10[-4], 0x01	/* icache invalidate */
-	brlt	1b
-
-	/* flush write buffer */
-	sync	0
-
-	/* copy data sections */
-	lda.w	r9, _edata
-1:	ld.d	r0, r8++
-	st.d	r10++, r0
-	cp.w	r8, r9
-	brlt	1b
-
-	/* zero out .bss */
-	mov	r0, 0
-	mov	r1, 0
-	lda.w	r9, __bss_end
-	sub	r9, r8
-1:	st.d	r10++, r0
-	sub	r9, 8
-	brgt	1b
-
-	/* jump to RAM */
-	sub	r0, pc, . - in_ram
-	add	pc, r0, lr
-
-	.align	2
-in_ram:
-	/* find the new GOT and relocate it */
-	lddpc	r6, got_init_reloc
-3:	rsub	r6, pc
-	mov	r8, r6
-	lda.w	r9, _egot
-	lda.w	r10, _got
-	sub	r9, r10
-1:	ld.w	r0, r8[0]
-	add	r0, lr
-	st.w	r8++, r0
-	sub	r9, 4
-	brgt	1b
-
-	/* Move the exception handlers */
-	mfsr	r2, SYSREG_EVBA
-	add	r2, lr
-	mtsr	SYSREG_EVBA, r2
-
-	/* Do the rest of the initialization sequence */
-	call	board_init_r
-
-	.align	2
-got_init_reloc:
-	.long	3b - _GLOBAL_OFFSET_TABLE_
-
-	.size	relocate_code, . - relocate_code