arch: remove score port

The Sunplus S+core architecture was added in 2009 by Chen Liqin,
who has been co-maintaining it with Lennox Wu <lennox.wu@gmail.com>
since then, but after they both left the company, nobody else has shown
any interest in the port and it has seen almost no activity other than
tree-wide changes.

The gcc port was removed a few years ago due to the inactivity.

While the sunplus website still advertises products with unspecified
RISC cores that might be S+core based, it's very clear that the Linux
port is completely abandoned at this point.

This removes all files related to the architecture.

Acked-by: Lennox Wu <lennox.wu@gmail.com>
Link: http://www.sunplus.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 493 deletions

diff --git a/arch/score/kernel/entry.S b/arch/score/kernel/entry.S
deleted file mode 100644
index befb87d30a89..000000000000
--- a/arch/score/kernel/entry.S
+++ /dev/null
@@ -1,493 +0,0 @@
-/*
- * arch/score/kernel/entry.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- *  Chen Liqin <liqin.chen@sunplusct.com>
- *  Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
- */
-
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/linkage.h>
-
-#include <asm/asmmacro.h>
-#include <asm/thread_info.h>
-#include <asm/unistd.h>
-
-/*
- * disable interrupts.
- */
-.macro	disable_irq
-	mfcr	r8, cr0
-	srli	r8, r8, 1
-	slli	r8, r8, 1
-	mtcr	r8, cr0
-	nop
-	nop
-	nop
-	nop
-	nop
-.endm
-
-/*
- * enable interrupts.
- */
-.macro	enable_irq
-	mfcr	r8, cr0
-	ori	r8, 1
-	mtcr	r8, cr0
-	nop
-	nop
-	nop
-	nop
-	nop
-.endm
-
-__INIT
-ENTRY(debug_exception_vector)
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-
-ENTRY(general_exception_vector)			# should move to addr 0x200
-	j	general_exception
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-
-ENTRY(interrupt_exception_vector)		# should move to addr 0x210
-	j	interrupt_exception
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-	nop!
-
-	.section ".text", "ax"
-	.align	2;
-general_exception:
-	mfcr	r31, cr2
-	nop
-	la	r30, exception_handlers
-	andi	r31, 0x1f			# get ecr.exc_code
-	slli	r31, r31, 2
-	add	r30, r30, r31
-	lw	r30, [r30]
-	br	r30
-
-interrupt_exception:
-	SAVE_ALL
-	mfcr	r4, cr2
-	nop
-	lw	r16, [r28, TI_REGS]
-	sw	r0, [r28, TI_REGS]
-	la	r3, ret_from_irq
-	srli	r4, r4, 18			# get ecr.ip[7:2], interrupt No.
-	mv	r5, r0
-	j	do_IRQ
-
-ENTRY(handle_nmi)				# NMI #1
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, nmi_exception_handler
-	brl	r8
-	j	restore_all
-
-ENTRY(handle_adelinsn)				# AdEL-instruction #2
-	SAVE_ALL
-	mfcr	r8, cr6
-	nop
-	nop
-	sw	r8, [r0, PT_EMA]
-	mv	r4, r0
-	la	r8, do_adelinsn
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_ibe)				# BusEL-instruction #5
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_be
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_pel)				# P-EL #6
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_pel
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_ccu)				# CCU #8
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_ccu
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_ri)				# RI #9
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_ri
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_tr)				# Trap #10
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_tr
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_adedata)				# AdES-instruction #12
-	SAVE_ALL
-	mfcr	r8, cr6
-	nop
-	nop
-	sw	r8, [r0, PT_EMA]
-	mv	r4, r0
-	la	r8, do_adedata
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_cee)				# CeE #16
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_cee
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_cpe)				# CpE #17
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_cpe
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_dbe)				# BusEL-data #18
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_be
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-ENTRY(handle_reserved)				# others
-	SAVE_ALL
-	mv	r4, r0
-	la	r8, do_reserved
-	brl	r8
-	mv	r4, r0
-	j	ret_from_exception
-	nop
-
-#ifndef CONFIG_PREEMPT
-#define resume_kernel	restore_all
-#else
-#define __ret_from_irq	ret_from_exception
-#endif
-
-	.align	2
-#ifndef CONFIG_PREEMPT
-ENTRY(ret_from_exception)
-	disable_irq			# preempt stop
-	nop
-	j	__ret_from_irq
-	nop
-#endif
-
-ENTRY(ret_from_irq)
-	sw	r16, [r28, TI_REGS]
-
-ENTRY(__ret_from_irq)
-	lw	r8, [r0, PT_PSR]	# returning to kernel mode?
-	andri.c	r8, r8, KU_USER
-	beq	resume_kernel
-
-resume_userspace:
-	disable_irq
-	lw	r6, [r28, TI_FLAGS]	# current->work
-	li	r8, _TIF_WORK_MASK
-	and.c	r8, r8, r6		# ignoring syscall_trace
-	bne	work_pending
-	nop
-	j	restore_all
-	nop
-
-#ifdef CONFIG_PREEMPT
-resume_kernel:
-	disable_irq
-	lw	r8, [r28, TI_PRE_COUNT]
-	cmpz.c	r8
-	bne	restore_all
-need_resched:
-	lw	r8, [r28, TI_FLAGS]
-	andri.c	r9, r8, _TIF_NEED_RESCHED
-	beq	restore_all
-	lw	r8, [r28, PT_PSR]		# Interrupts off?
-	andri.c	r8, r8, 1
-	beq	restore_all
-	bl	preempt_schedule_irq
-	nop
-	j	need_resched
-	nop
-#endif
-
-ENTRY(ret_from_kernel_thread)
-	bl	schedule_tail			# r4=struct task_struct *prev
-	nop
-	mv	r4, r13
-	brl	r12
-	j	syscall_exit
-
-ENTRY(ret_from_fork)
-	bl	schedule_tail			# r4=struct task_struct *prev
-
-ENTRY(syscall_exit)
-	nop
-	disable_irq
-	lw	r6, [r28, TI_FLAGS]		# current->work
-	li	r8, _TIF_WORK_MASK
-	and.c	r8, r6, r8
-	bne	syscall_exit_work
-
-ENTRY(restore_all)					# restore full frame
-	RESTORE_ALL_AND_RET
-
-work_pending:
-	andri.c	r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS
-	beq	work_notifysig
-work_resched:
-	bl	schedule
-	nop
-	disable_irq
-	lw	r6, [r28, TI_FLAGS]
-	li	r8, _TIF_WORK_MASK
-	and.c	r8, r6, r8	# is there any work to be done
-				# other than syscall tracing?
-	beq	restore_all
-	andri.c	r8, r6, _TIF_NEED_RESCHED
-	bne	work_resched
-
-work_notifysig:
-	mv	r4, r0
-	li	r5, 0
-	bl	do_notify_resume	# r6 already loaded
-	nop
-	j	resume_userspace
-	nop
-
-ENTRY(syscall_exit_work)
-	li	r8, _TIF_SYSCALL_TRACE
-	and.c	r8, r8, r6		# r6 is preloaded with TI_FLAGS
-	beq	work_pending		# trace bit set?
-	nop
-	enable_irq
-	mv	r4, r0
-	li	r5, 1
-	bl	do_syscall_trace
-	nop
-	b	resume_userspace
-	nop
-
-.macro	save_context	reg
-	sw	r12, [\reg, THREAD_REG12];
-	sw	r13, [\reg, THREAD_REG13];
-	sw	r14, [\reg, THREAD_REG14];
-	sw	r15, [\reg, THREAD_REG15];
-	sw	r16, [\reg, THREAD_REG16];
-	sw	r17, [\reg, THREAD_REG17];
-	sw	r18, [\reg, THREAD_REG18];
-	sw	r19, [\reg, THREAD_REG19];
-	sw	r20, [\reg, THREAD_REG20];
-	sw	r21, [\reg, THREAD_REG21];
-	sw	r29, [\reg, THREAD_REG29];
-	sw	r2, [\reg, THREAD_REG2];
-	sw	r0, [\reg, THREAD_REG0]
-.endm
-
-.macro	restore_context	reg
-	lw	r12, [\reg, THREAD_REG12];
-	lw	r13, [\reg, THREAD_REG13];
-	lw	r14, [\reg, THREAD_REG14];
-	lw	r15, [\reg, THREAD_REG15];
-	lw	r16, [\reg, THREAD_REG16];
-	lw	r17, [\reg, THREAD_REG17];
-	lw	r18, [\reg, THREAD_REG18];
-	lw	r19, [\reg, THREAD_REG19];
-	lw	r20, [\reg, THREAD_REG20];
-	lw	r21, [\reg, THREAD_REG21];
-	lw	r29, [\reg, THREAD_REG29];
-	lw	r0, [\reg, THREAD_REG0];
-	lw	r2, [\reg, THREAD_REG2];
-	lw	r3, [\reg, THREAD_REG3]
-.endm
-
-/*
- * task_struct *resume(task_struct *prev, task_struct *next,
- *			struct thread_info *next_ti)
- */
-ENTRY(resume)
-	mfcr	r9, cr0
-	nop
-	nop
-	sw	r9, [r4, THREAD_PSR]
-	save_context	r4
-	sw	r3, [r4, THREAD_REG3]
-
-	mv	r28, r6
-	restore_context	r5
-	mv	r8, r6
-	addi	r8, KERNEL_STACK_SIZE
-	subi	r8, 32
-	la 	r9, kernelsp;
-	sw 	r8, [r9];
-
-	mfcr	r9, cr0
-	ldis	r7, 0x00ff
-	nop
-	and	r9, r9, r7
-	lw	r6, [r5, THREAD_PSR]
-	not	r7, r7
-	and	r6, r6, r7
-	or	r6, r6, r9
-	mtcr	r6, cr0
-	nop; nop; nop; nop; nop
-	br	r3
-
-ENTRY(handle_sys)
-	SAVE_ALL
-	sw	r8, [r0, 16]		# argument 5 from user r8
-	sw	r9, [r0, 20]		# argument 6 from user r9
-	enable_irq
-
-	sw	r4, [r0, PT_ORIG_R4]	#for restart syscall
-	sw	r7, [r0, PT_ORIG_R7]	#for restart syscall
-	sw	r27, [r0, PT_IS_SYSCALL] # it from syscall
-
-	lw	r9, [r0, PT_EPC]	# skip syscall on return
-	addi	r9, 4
-	sw	r9, [r0, PT_EPC]
-
-	cmpi.c	r27, __NR_syscalls 	# check syscall number
-	bcs	illegal_syscall
-
-	slli	r8, r27, 2		# get syscall routine
-	la	r11, sys_call_table
-	add	r11, r11, r8
-	lw	r10, [r11]		# get syscall entry
-
-	cmpz.c	r10
-	beq	illegal_syscall
-
-	lw	r8, [r28, TI_FLAGS]
-	li	r9, _TIF_SYSCALL_TRACE
-	and.c	r8, r8, r9
-	bne	syscall_trace_entry
-
-	brl	r10			# Do The Real system call
-
-	cmpi.c	r4, 0
-	blt	1f
-	ldi	r8, 0
-	sw	r8, [r0, PT_R7]
-	b 2f
-1:
-	cmpi.c	r4, -MAX_ERRNO - 1
-	ble	2f
-	ldi	r8, 0x1;
-	sw	r8, [r0, PT_R7]
-	neg	r4, r4
-2:
-	sw	r4, [r0, PT_R4]		# save result
-
-syscall_return:
-	disable_irq
-	lw	r6, [r28, TI_FLAGS]	# current->work
-	li	r8, _TIF_WORK_MASK
-	and.c	r8, r6, r8
-	bne	syscall_return_work
-	j	restore_all
-
-syscall_return_work:
-	j	syscall_exit_work
-
-syscall_trace_entry:
-	mv	r16, r10
-	mv	r4, r0
-	li	r5, 0
-	bl	do_syscall_trace
-
-	mv	r8, r16
-	lw	r4, [r0, PT_R4]		# Restore argument registers
-	lw	r5, [r0, PT_R5]
-	lw	r6, [r0, PT_R6]
-	lw	r7, [r0, PT_R7]
-	brl	r8
-
-	li	r8, -MAX_ERRNO - 1
-	sw	r8, [r0, PT_R7]		# set error flag
-
-	neg	r4, r4			# error
-	sw	r4, [r0, PT_R0]		# set flag for syscall
-					# restarting
-1:	sw	r4, [r0, PT_R2]		# result
-	j	syscall_exit
-
-illegal_syscall:
-	ldi	r4, -ENOSYS		# error
-	sw	r4, [r0, PT_ORIG_R4]
-	sw	r4, [r0, PT_R4]
-	ldi	r9, 1			# set error flag
-	sw	r9, [r0, PT_R7]
-	j	syscall_return
-
-ENTRY(sys_rt_sigreturn)
-	mv	r4, r0
-	la	r8, score_rt_sigreturn
-	br	r8