1 files changed, 0 insertions, 70 deletions
diff --git a/arch/powerpc/lib/crypto/sha256.c b/arch/powerpc/lib/crypto/sha256.c
deleted file mode 100644
index 6b0f079587eb..000000000000
--- a/arch/powerpc/lib/crypto/sha256.c
+++ /dev/null
@@ -1,70 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * SHA-256 Secure Hash Algorithm, SPE optimized
- *
- * Based on generic implementation. The assembler module takes care
- * about the SPE registers so it can run from interrupt context.
- *
- * Copyright (c) 2015 Markus Stockhausen <stockhausen@collogia.de>
- */
-
-#include <asm/switch_to.h>
-#include <crypto/internal/sha2.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/preempt.h>
-
-/*
- * MAX_BYTES defines the number of bytes that are allowed to be processed
- * between preempt_disable() and preempt_enable(). SHA256 takes ~2,000
- * operations per 64 bytes. e500 cores can issue two arithmetic instructions
- * per clock cycle using one 32/64 bit unit (SU1) and one 32 bit unit (SU2).
- * Thus 1KB of input data will need an estimated maximum of 18,000 cycles.
- * Headroom for cache misses included. Even with the low end model clocked
- * at 667 MHz this equals to a critical time window of less than 27us.
- *
- */
-#define MAX_BYTES 1024
-
-extern void ppc_spe_sha256_transform(u32 *state, const u8 *src, u32 blocks);
-
-static void spe_begin(void)
-{
-	/* We just start SPE operations and will save SPE registers later. */
-	preempt_disable();
-	enable_kernel_spe();
-}
-
-static void spe_end(void)
-{
-	disable_kernel_spe();
-	/* reenable preemption */
-	preempt_enable();
-}
-
-void sha256_blocks_arch(u32 state[SHA256_STATE_WORDS],
-			const u8 *data, size_t nblocks)
-{
-	do {
-		/* cut input data into smaller blocks */
-		u32 unit = min_t(size_t, nblocks,
-				 MAX_BYTES / SHA256_BLOCK_SIZE);
-
-		spe_begin();
-		ppc_spe_sha256_transform(state, data, unit);
-		spe_end();
-
-		data += unit * SHA256_BLOCK_SIZE;
-		nblocks -= unit;
-	} while (nblocks);
-}
-EXPORT_SYMBOL_GPL(sha256_blocks_arch);
-
-bool sha256_is_arch_optimized(void)
-{
-	return true;
-}
-EXPORT_SYMBOL_GPL(sha256_is_arch_optimized);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("SHA-256 Secure Hash Algorithm, SPE optimized");