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, 237 deletions

diff --git a/arch/score/mm/fault.c b/arch/score/mm/fault.c
deleted file mode 100644
index b85fad4f0874..000000000000
--- a/arch/score/mm/fault.c
+++ /dev/null
@@ -1,237 +0,0 @@
-/*
- * arch/score/mm/fault.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- *  Lennox Wu <lennox.wu@sunplusct.com>
- *  Chen Liqin <liqin.chen@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/errno.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/extable.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/uaccess.h>
-
-/*
- * This routine handles page faults.  It determines the address,
- * and the problem, and then passes it off to one of the appropriate
- * routines.
- */
-asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
-				unsigned long address)
-{
-	struct vm_area_struct *vma = NULL;
-	struct task_struct *tsk = current;
-	struct mm_struct *mm = tsk->mm;
-	const int field = sizeof(unsigned long) * 2;
-	unsigned long flags = 0;
-	siginfo_t info;
-	int fault;
-
-	info.si_code = SEGV_MAPERR;
-
-	/*
-	* We fault-in kernel-space virtual memory on-demand. The
-	* 'reference' page table is init_mm.pgd.
-	*
-	* NOTE! We MUST NOT take any locks for this case. We may
-	* be in an interrupt or a critical region, and should
-	* only copy the information from the master page table,
-	* nothing more.
-	*/
-	if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
-		goto vmalloc_fault;
-#ifdef MODULE_START
-	if (unlikely(address >= MODULE_START && address < MODULE_END))
-		goto vmalloc_fault;
-#endif
-
-	/*
-	* If we're in an interrupt or have no user
-	* context, we must not take the fault..
-	*/
-	if (pagefault_disabled() || !mm)
-		goto bad_area_nosemaphore;
-
-	if (user_mode(regs))
-		flags |= FAULT_FLAG_USER;
-
-	down_read(&mm->mmap_sem);
-	vma = find_vma(mm, address);
-	if (!vma)
-		goto bad_area;
-	if (vma->vm_start <= address)
-		goto good_area;
-	if (!(vma->vm_flags & VM_GROWSDOWN))
-		goto bad_area;
-	if (expand_stack(vma, address))
-		goto bad_area;
-	/*
-	* Ok, we have a good vm_area for this memory access, so
-	* we can handle it..
-	 */
-good_area:
-	info.si_code = SEGV_ACCERR;
-
-	if (write) {
-		if (!(vma->vm_flags & VM_WRITE))
-			goto bad_area;
-		flags |= FAULT_FLAG_WRITE;
-	} else {
-		if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
-			goto bad_area;
-	}
-
-	/*
-	* If for any reason at all we couldn't handle the fault,
-	* make sure we exit gracefully rather than endlessly redo
-	* the fault.
-	*/
-	fault = handle_mm_fault(vma, address, flags);
-	if (unlikely(fault & VM_FAULT_ERROR)) {
-		if (fault & VM_FAULT_OOM)
-			goto out_of_memory;
-		else if (fault & VM_FAULT_SIGSEGV)
-			goto bad_area;
-		else if (fault & VM_FAULT_SIGBUS)
-			goto do_sigbus;
-		BUG();
-	}
-	if (fault & VM_FAULT_MAJOR)
-		tsk->maj_flt++;
-	else
-		tsk->min_flt++;
-
-	up_read(&mm->mmap_sem);
-	return;
-
-	/*
-	* Something tried to access memory that isn't in our memory map..
-	* Fix it, but check if it's kernel or user first..
-	 */
-bad_area:
-	up_read(&mm->mmap_sem);
-
-bad_area_nosemaphore:
-	/* User mode accesses just cause a SIGSEGV */
-	if (user_mode(regs)) {
-		tsk->thread.cp0_badvaddr = address;
-		tsk->thread.error_code = write;
-		info.si_signo = SIGSEGV;
-		info.si_errno = 0;
-		/* info.si_code has been set above */
-		info.si_addr = (void __user *) address;
-		force_sig_info(SIGSEGV, &info, tsk);
-		return;
-	}
-
-no_context:
-	/* Are we prepared to handle this kernel fault? */
-	if (fixup_exception(regs)) {
-		current->thread.cp0_baduaddr = address;
-		return;
-	}
-
-	/*
-	* Oops. The kernel tried to access some bad page. We'll have to
-	* terminate things with extreme prejudice.
-	*/
-	bust_spinlocks(1);
-
-	printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
-			"virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
-			0, field, address, field, regs->cp0_epc,
-			field, regs->regs[3]);
-	die("Oops", regs);
-
-	/*
-	* We ran out of memory, or some other thing happened to us that made
-	* us unable to handle the page fault gracefully.
-	*/
-out_of_memory:
-	up_read(&mm->mmap_sem);
-	if (!user_mode(regs))
-		goto no_context;
-	pagefault_out_of_memory();
-	return;
-
-do_sigbus:
-	up_read(&mm->mmap_sem);
-	/* Kernel mode? Handle exceptions or die */
-	if (!user_mode(regs))
-		goto no_context;
-	else
-	/*
-	* Send a sigbus, regardless of whether we were in kernel
-	* or user mode.
-	*/
-	tsk->thread.cp0_badvaddr = address;
-	info.si_signo = SIGBUS;
-	info.si_errno = 0;
-	info.si_code = BUS_ADRERR;
-	info.si_addr = (void __user *) address;
-	force_sig_info(SIGBUS, &info, tsk);
-	return;
-vmalloc_fault:
-	{
-		/*
-		* Synchronize this task's top level page-table
-		* with the 'reference' page table.
-		*
-		* Do _not_ use "tsk" here. We might be inside
-		* an interrupt in the middle of a task switch..
-		*/
-		int offset = __pgd_offset(address);
-		pgd_t *pgd, *pgd_k;
-		pud_t *pud, *pud_k;
-		pmd_t *pmd, *pmd_k;
-		pte_t *pte_k;
-
-		pgd = (pgd_t *) pgd_current + offset;
-		pgd_k = init_mm.pgd + offset;
-
-		if (!pgd_present(*pgd_k))
-			goto no_context;
-		set_pgd(pgd, *pgd_k);
-
-		pud = pud_offset(pgd, address);
-		pud_k = pud_offset(pgd_k, address);
-		if (!pud_present(*pud_k))
-			goto no_context;
-
-		pmd = pmd_offset(pud, address);
-		pmd_k = pmd_offset(pud_k, address);
-		if (!pmd_present(*pmd_k))
-			goto no_context;
-		set_pmd(pmd, *pmd_k);
-
-		pte_k = pte_offset_kernel(pmd_k, address);
-		if (!pte_present(*pte_k))
-			goto no_context;
-		return;
-	}
-}