lib/crypto: sparc: Move arch/sparc/lib/crypto/ into lib/crypto/

Move the contents of arch/sparc/lib/crypto/ into lib/crypto/sparc/.

The new code organization makes a lot more sense for how this code
actually works and is developed.  In particular, it makes it possible to
build each algorithm as a single module, with better inlining and dead
code elimination.  For a more detailed explanation, see the patchset
which did this for the CRC library code:
https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/.
Also see the patchset which did this for SHA-512:
https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/

This is just a preparatory commit, which does the move to get the files
into their new location but keeps them building the same way as before.
Later commits will make the actual improvements to the way the
arch-optimized code is integrated for each algorithm.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20250619191908.134235-8-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

5 files changed, 0 insertions, 155 deletions

diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 5cf9781d68b4..ef8860eb3f3d 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -4,7 +4,6 @@
 
 asflags-y := -ansi -DST_DIV0=0x02
 
-obj-y                 += crypto/
 lib-$(CONFIG_SPARC32) += ashrdi3.o
 lib-$(CONFIG_SPARC32) += memcpy.o memset.o
 lib-y                 += strlen.o
diff --git a/arch/sparc/lib/crypto/Kconfig b/arch/sparc/lib/crypto/Kconfig
deleted file mode 100644
index e5c3e4d3dba6..000000000000
--- a/arch/sparc/lib/crypto/Kconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-
-config CRYPTO_SHA256_SPARC64
-	tristate
-	depends on SPARC64
-	default CRYPTO_LIB_SHA256
-	select CRYPTO_ARCH_HAVE_LIB_SHA256
-	select CRYPTO_LIB_SHA256_GENERIC
diff --git a/arch/sparc/lib/crypto/Makefile b/arch/sparc/lib/crypto/Makefile
deleted file mode 100644
index 75ee244ad6f7..000000000000
--- a/arch/sparc/lib/crypto/Makefile
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-
-obj-$(CONFIG_CRYPTO_SHA256_SPARC64) += sha256-sparc64.o
-sha256-sparc64-y := sha256.o sha256_asm.o
diff --git a/arch/sparc/lib/crypto/sha256.c b/arch/sparc/lib/crypto/sha256.c
deleted file mode 100644
index 8bdec2db08b3..000000000000
--- a/arch/sparc/lib/crypto/sha256.c
+++ /dev/null
@@ -1,64 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * SHA-256 accelerated using the sparc64 sha256 opcodes
- *
- * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
- * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- * SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
- */
-
-#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt
-
-#include <asm/elf.h>
-#include <asm/opcodes.h>
-#include <asm/pstate.h>
-#include <crypto/internal/sha2.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_sha256_opcodes);
-
-asmlinkage void sha256_sparc64_transform(u32 state[SHA256_STATE_WORDS],
-					 const u8 *data, size_t nblocks);
-
-void sha256_blocks_arch(u32 state[SHA256_STATE_WORDS],
-			const u8 *data, size_t nblocks)
-{
-	if (static_branch_likely(&have_sha256_opcodes))
-		sha256_sparc64_transform(state, data, nblocks);
-	else
-		sha256_blocks_generic(state, data, nblocks);
-}
-EXPORT_SYMBOL_GPL(sha256_blocks_arch);
-
-bool sha256_is_arch_optimized(void)
-{
-	return static_key_enabled(&have_sha256_opcodes);
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
-static int __init sha256_sparc64_mod_init(void)
-{
-	unsigned long cfr;
-
-	if (!(sparc64_elf_hwcap & HWCAP_SPARC_CRYPTO))
-		return 0;
-
-	__asm__ __volatile__("rd %%asr26, %0" : "=r" (cfr));
-	if (!(cfr & CFR_SHA256))
-		return 0;
-
-	static_branch_enable(&have_sha256_opcodes);
-	pr_info("Using sparc64 sha256 opcode optimized SHA-256/SHA-224 implementation\n");
-	return 0;
-}
-subsys_initcall(sha256_sparc64_mod_init);
-
-static void __exit sha256_sparc64_mod_exit(void)
-{
-}
-module_exit(sha256_sparc64_mod_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA-256 accelerated using the sparc64 sha256 opcodes");
diff --git a/arch/sparc/lib/crypto/sha256_asm.S b/arch/sparc/lib/crypto/sha256_asm.S
deleted file mode 100644
index ddcdd3daf31e..000000000000
--- a/arch/sparc/lib/crypto/sha256_asm.S
+++ /dev/null
@@ -1,78 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#include <linux/linkage.h>
-#include <asm/opcodes.h>
-#include <asm/visasm.h>
-
-ENTRY(sha256_sparc64_transform)
-	/* %o0 = state, %o1 = data, %o2 = nblocks */
-	VISEntryHalf
-	ld	[%o0 + 0x00], %f0
-	ld	[%o0 + 0x04], %f1
-	ld	[%o0 + 0x08], %f2
-	ld	[%o0 + 0x0c], %f3
-	ld	[%o0 + 0x10], %f4
-	ld	[%o0 + 0x14], %f5
-	andcc	%o1, 0x7, %g0
-	ld	[%o0 + 0x18], %f6
-	bne,pn	%xcc, 10f
-	 ld	[%o0 + 0x1c], %f7
-
-1:
-	ldd	[%o1 + 0x00], %f8
-	ldd	[%o1 + 0x08], %f10
-	ldd	[%o1 + 0x10], %f12
-	ldd	[%o1 + 0x18], %f14
-	ldd	[%o1 + 0x20], %f16
-	ldd	[%o1 + 0x28], %f18
-	ldd	[%o1 + 0x30], %f20
-	ldd	[%o1 + 0x38], %f22
-
-	SHA256
-
-	subcc	%o2, 1, %o2
-	bne,pt	%xcc, 1b
-	 add	%o1, 0x40, %o1
-
-5:
-	st	%f0, [%o0 + 0x00]
-	st	%f1, [%o0 + 0x04]
-	st	%f2, [%o0 + 0x08]
-	st	%f3, [%o0 + 0x0c]
-	st	%f4, [%o0 + 0x10]
-	st	%f5, [%o0 + 0x14]
-	st	%f6, [%o0 + 0x18]
-	st	%f7, [%o0 + 0x1c]
-	retl
-	 VISExitHalf
-10:
-	alignaddr %o1, %g0, %o1
-
-	ldd	[%o1 + 0x00], %f10
-1:
-	ldd	[%o1 + 0x08], %f12
-	ldd	[%o1 + 0x10], %f14
-	ldd	[%o1 + 0x18], %f16
-	ldd	[%o1 + 0x20], %f18
-	ldd	[%o1 + 0x28], %f20
-	ldd	[%o1 + 0x30], %f22
-	ldd	[%o1 + 0x38], %f24
-	ldd	[%o1 + 0x40], %f26
-
-	faligndata %f10, %f12, %f8
-	faligndata %f12, %f14, %f10
-	faligndata %f14, %f16, %f12
-	faligndata %f16, %f18, %f14
-	faligndata %f18, %f20, %f16
-	faligndata %f20, %f22, %f18
-	faligndata %f22, %f24, %f20
-	faligndata %f24, %f26, %f22
-
-	SHA256
-
-	subcc	%o2, 1, %o2
-	fsrc2	%f26, %f10
-	bne,pt	%xcc, 1b
-	 add	%o1, 0x40, %o1
-
-	ba,a,pt	%xcc, 5b
-ENDPROC(sha256_sparc64_transform)