diff options
Diffstat (limited to 'arch/sparc/lib/crypto')
| -rw-r--r-- | arch/sparc/lib/crypto/Kconfig | 8 | ||||
| -rw-r--r-- | arch/sparc/lib/crypto/Makefile | 4 | ||||
| -rw-r--r-- | arch/sparc/lib/crypto/sha256.c | 64 | ||||
| -rw-r--r-- | arch/sparc/lib/crypto/sha256_asm.S | 78 |
4 files changed, 154 insertions, 0 deletions
diff --git a/arch/sparc/lib/crypto/Kconfig b/arch/sparc/lib/crypto/Kconfig new file mode 100644 index 000000000000..e5c3e4d3dba6 --- /dev/null +++ b/arch/sparc/lib/crypto/Kconfig @@ -0,0 +1,8 @@ +# 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 new file mode 100644 index 000000000000..75ee244ad6f7 --- /dev/null +++ b/arch/sparc/lib/crypto/Makefile @@ -0,0 +1,4 @@ +# 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 new file mode 100644 index 000000000000..8bdec2db08b3 --- /dev/null +++ b/arch/sparc/lib/crypto/sha256.c @@ -0,0 +1,64 @@ +// 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 new file mode 100644 index 000000000000..ddcdd3daf31e --- /dev/null +++ b/arch/sparc/lib/crypto/sha256_asm.S @@ -0,0 +1,78 @@ +/* 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) |