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, 244 deletions

diff --git a/arch/score/include/asm/checksum.h b/arch/score/include/asm/checksum.h
deleted file mode 100644
index 9f00ca5fd49d..000000000000
--- a/arch/score/include/asm/checksum.h
+++ /dev/null
@@ -1,244 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_CHECKSUM_H
-#define _ASM_SCORE_CHECKSUM_H
-
-#include <linux/in6.h>
-#include <linux/uaccess.h>
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-unsigned int csum_partial(const void *buff, int len, __wsum sum);
-unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
-					unsigned int sum, int *csum_err);
-unsigned int csum_partial_copy(const char *src, char *dst,
-					int len, unsigned int sum);
-
-/*
- * this is a new version of the above that records errors it finds in *errp,
- * but continues and zeros the rest of the buffer.
- */
-
-/*
- * Copy and checksum to user
- */
-#define HAVE_CSUM_COPY_USER
-static inline
-__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
-			__wsum sum, int *err_ptr)
-{
-	sum = csum_partial(src, len, sum);
-	if (copy_to_user(dst, src, len)) {
-		*err_ptr = -EFAULT;
-		return (__force __wsum) -1; /* invalid checksum */
-	}
-	return sum;
-}
-
-
-#define csum_partial_copy_nocheck csum_partial_copy
-/*
- *	Fold a partial checksum without adding pseudo headers
- */
-
-static inline __sum16 csum_fold(__wsum sum)
-{
-	/* the while loop is unnecessary really, it's always enough with two
-	   iterations */
-	__asm__ __volatile__(
-		".set volatile\n\t"
-		".set\tr1\n\t"
-		"slli\tr1,%0, 16\n\t"
-		"add\t%0,%0, r1\n\t"
-		"cmp.c\tr1, %0\n\t"
-		"srli\t%0, %0, 16\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:ldi\tr30, 0xffff\n\t"
-		"xor\t%0, %0, r30\n\t"
-		"slli\t%0, %0, 16\n\t"
-		"srli\t%0, %0, 16\n\t"
-		".set\tnor1\n\t"
-		".set optimize\n\t"
-		: "=r" (sum)
-		: "0" (sum));
-	return sum;
-}
-
-/*
- *	This is a version of ip_compute_csum() optimized for IP headers,
- *	which always checksum on 4 octet boundaries.
- *
- *	By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
- *	Arnt Gulbrandsen.
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
-	unsigned int sum;
-	unsigned long dummy;
-
-	__asm__ __volatile__(
-		".set volatile\n\t"
-		".set\tnor1\n\t"
-		"lw\t%0, [%1]\n\t"
-		"subri\t%2, %2, 4\n\t"
-		"slli\t%2, %2, 2\n\t"
-		"lw\t%3, [%1, 4]\n\t"
-		"add\t%2, %2, %1\n\t"
-		"add\t%0, %0, %3\n\t"
-		"cmp.c\t%3, %0\n\t"
-		"lw\t%3, [%1, 8]\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:\n\t"
-		"add\t%0, %0, %3\n\t"
-		"cmp.c\t%3, %0\n\t"
-		"lw\t%3, [%1, 12]\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %3\n\t"
-		"cmp.c\t%3, %0\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n"
-
-		"1:\tlw\t%3, [%1, 16]\n\t"
-		"addi\t%1, 4\n\t"
-		"add\t%0, %0, %3\n\t"
-		"cmp.c\t%3, %0\n\t"
-		"bleu\t2f\n\t"
-		"addi\t%0, 0x1\n"
-		"2:cmp.c\t%2, %1\n\t"
-		"bne\t1b\n\t"
-
-		".set\tr1\n\t"
-		".set optimize\n\t"
-		: "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
-		: "1" (iph), "2" (ihl));
-
-	return csum_fold(sum);
-}
-
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
-		   __u8 proto, __wsum sum)
-{
-	unsigned long tmp = (len + proto) << 8;
-	__asm__ __volatile__(
-		".set volatile\n\t"
-		"add\t%0, %0, %2\n\t"
-		"cmp.c\t%2, %0\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:\n\t"
-		"add\t%0, %0, %3\n\t"
-		"cmp.c\t%3, %0\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:\n\t"
-		"add\t%0, %0, %4\n\t"
-		"cmp.c\t%4, %0\n\t"
-		"bleu\t1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:\n\t"
-		".set optimize\n\t"
-		: "=r" (sum)
-		: "0" (daddr), "r"(saddr),
-		"r" (tmp),
-		"r" (sum));
-	return sum;
-}
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16
-csum_tcpudp_magic(__be32 saddr, __be32 daddr, __u32 len,
-		  __u8 proto, __wsum sum)
-{
-	return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-
-static inline unsigned short ip_compute_csum(const void *buff, int len)
-{
-	return csum_fold(csum_partial(buff, len, 0));
-}
-
-#define _HAVE_ARCH_IPV6_CSUM
-static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
-				      const struct in6_addr *daddr,
-				      __u32 len, __u8 proto, __wsum sum)
-{
-	__asm__ __volatile__(
-		".set\tvolatile\t\t\t# csum_ipv6_magic\n\t"
-		"add\t%0, %0, %5\t\t\t# proto (long in network byte order)\n\t"
-		"cmp.c\t%5, %0\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %6\t\t\t# csum\n\t"
-		"cmp.c\t%6, %0\n\t"
-		"lw\t%1, [%2, 0]\t\t\t# four words source address\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"1:lw\t%1, [%2, 4]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%2,8]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%2, 12]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0,%1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%3, 0]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%3, 4]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%3, 8]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"lw\t%1, [%3, 12]\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:add\t%0, %0, %1\n\t"
-		"cmp.c\t%1, %0\n\t"
-		"bleu 1f\n\t"
-		"addi\t%0, 0x1\n\t"
-		"1:\n\t"
-		".set\toptimize"
-		: "=r" (sum), "=r" (proto)
-		: "r" (saddr), "r" (daddr),
-		  "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
-
-	return csum_fold(sum);
-}
-#endif /* _ASM_SCORE_CHECKSUM_H */