+++ /dev/null
-/*
- * arch/ubicom32/crypto/sha1_ubicom32_asm.S
- * SHA1 hash support for Ubicom32 architecture V3.
- *
- * (C) Copyright 2009, Ubicom, Inc.
- *
- * This file is part of the Ubicom32 Linux Kernel Port.
- *
- * The Ubicom32 Linux Kernel Port 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.
- *
- * The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
- * see <http://www.gnu.org/licenses/>.
- *
- * Ubicom32 implementation derived from (with many thanks):
- * arch/m68knommu
- * arch/blackfin
- * arch/parisc
- */
-
-#define __ASM__
-#include <asm/ip5000.h>
-
-#ifndef RP
-#define RP A5
-#endif
-
-;*****************************************************************************************
-; The function prototype
-;*****************************************************************************************
-; void sha1_ip5k_init(void)
-; void sha1_ip5k_transform(u32_t *data_input)
-; void sha1_ip5k_output(u32_t *digest)
-
-;*****************************************************************************************
-; Inputs
-;*****************************************************************************************
-; data_input is the pointer to the block of data over which the digest will be calculated.
-; It should be word aligned.
-;
-; digest is the pointer to the block of data into which the digest (the output) will be written.
-; It should be word aligned.
-;
-
-;*****************************************************************************************
-; Outputs
-;*****************************************************************************************
-; None
-
-;*****************************************************************************************
-; Hash Constants
-;*****************************************************************************************
-#define HASH_SHA1_IN0 0x67452301
-#define HASH_SHA1_IN1 0xefcdab89
-#define HASH_SHA1_IN2 0x98badcfe
-#define HASH_SHA1_IN3 0x10325476
-#define HASH_SHA1_IN4 0xc3d2e1f0
-
-#define HASH_SECURITY_BLOCK_CONTROL_INIT_NO_ENCYPTION 2
-#define HASH_SECURITY_BLOCK_CONTROL_INIT_SHA1 ((1 << 5) | HASH_SECURITY_BLOCK_CONTROL_INIT_NO_ENCYPTION)
-
-;*****************************************************************************************
-; An: Address Registers
-;*****************************************************************************************
-#define an_digest a4
-#define an_data_input a4
-#define an_security_block a3
-
-;*****************************************************************************************
-; Hash related defines
-;*****************************************************************************************
-#define hash_control 0x00(an_security_block)
-#define hash_control_low 0x02(an_security_block)
-#define hash_status 0x04(an_security_block)
-
-#define hash_input_0 0x30(an_security_block)
-#define hash_input_1 0x34(an_security_block)
-#define hash_input_2 0x38(an_security_block)
-#define hash_input_3 0x3c(an_security_block)
-#define hash_input_4 0x40(an_security_block)
-
-#define hash_output_0 0x70(an_security_block)
-#define hash_output_0_low 0x72(an_security_block)
-#define hash_output_1 0x74(an_security_block)
-#define hash_output_1_low 0x76(an_security_block)
-#define hash_output_2 0x78(an_security_block)
-#define hash_output_2_low 0x7a(an_security_block)
-#define hash_output_3 0x7c(an_security_block)
-#define hash_output_3_low 0x7e(an_security_block)
-#define hash_output_4 0x80(an_security_block)
-#define hash_output_4_low 0x82(an_security_block)
-
-;*****************************************************************************************
-; Assembly macros
-;*****************************************************************************************
- ; C compiler reserves RP (A5) for return address during subroutine call.
- ; Use RP to return to caller
-.macro call_return_macro
- calli RP, 0(RP)
-.endm
-
-;*****************************************************************************************
-; void sha1_ip5k_init(void)
-; initialize the output registers of the hash module
-
- ;.section .text.sha1_ip5k_init,"ax",@progbits
- .section .ocm_text,"ax",@progbits
- .global _sha1_ip5k_init
- .func sha1_ip5k_init, _sha1_ip5k_init
-
-_sha1_ip5k_init:
- moveai an_security_block, #SECURITY_BASE_EFFECTIVE_ADDRESS
-
- movei hash_control, #%hi(HASH_SECURITY_BLOCK_CONTROL_INIT_SHA1)
- movei hash_control_low, #%lo(HASH_SECURITY_BLOCK_CONTROL_INIT_SHA1)
-
- movei hash_output_0, #%hi(HASH_SHA1_IN0)
- movei hash_output_0_low, #%lo(HASH_SHA1_IN0)
-
- movei hash_output_1, #%hi(HASH_SHA1_IN1)
- movei hash_output_1_low, #%lo(HASH_SHA1_IN1)
-
- movei hash_output_2, #%hi(HASH_SHA1_IN2)
- movei hash_output_2_low, #%lo(HASH_SHA1_IN2)
-
- movei hash_output_3, #%hi(HASH_SHA1_IN3)
- movei hash_output_3_low, #%lo(HASH_SHA1_IN3)
-
- movei hash_output_4, #%hi(HASH_SHA1_IN4)
- movei hash_output_4_low, #%lo(HASH_SHA1_IN4)
-
- call_return_macro
- .endfunc
-
-;*****************************************************************************************
-; void sha1_ip5k_init_digest(u32_t *hash_input)
-; initialize the output registers of the hash module
-
- ;.section .text.sha1_ip5k_init_digest,"ax",@progbits
- .section .ocm_text,"ax",@progbits
- .global _sha1_ip5k_init_digest
- .func sha1_ip5k_init_digest, _sha1_ip5k_init_digest
-
-_sha1_ip5k_init_digest:
- movea an_data_input, D0
-
- moveai an_security_block, #SECURITY_BASE_EFFECTIVE_ADDRESS
-
- movei hash_control, #%hi(HASH_SECURITY_BLOCK_CONTROL_INIT_SHA1)
- movei hash_control_low, #%lo(HASH_SECURITY_BLOCK_CONTROL_INIT_SHA1)
-
- move.4 hash_output_0, (an_data_input)4++
- move.4 hash_output_1, (an_data_input)4++
- move.4 hash_output_2, (an_data_input)4++
- move.4 hash_output_3, (an_data_input)4++
- move.4 hash_output_4, (an_data_input)4++
-
- call_return_macro
- .endfunc
-
-;*****************************************************************************************
-; void sha1_ip5k_transform(u32_t *data_input)
-; performs intermediate transformation step for the hash calculation
-
- ;.section .text.sha1_ip5k_transform,"ax",@progbits
- .section .ocm_text,"ax",@progbits
- .global _sha1_ip5k_transform
- .func sha1_ip5k_transform, _sha1_ip5k_transform
-
-_sha1_ip5k_transform:
- movea an_data_input, D0
-
- moveai an_security_block, #SECURITY_BASE_EFFECTIVE_ADDRESS
-
- ; Write the first 128bits (16 bytes)
- move.4 hash_input_0, (an_data_input)4++
- move.4 hash_input_1, (an_data_input)4++
- move.4 hash_input_2, (an_data_input)4++
- move.4 hash_input_3, (an_data_input)4++
- move.4 hash_input_4, D0
-
- move.4 hash_input_0, (an_data_input)4++
- move.4 hash_input_1, (an_data_input)4++
- move.4 hash_input_2, (an_data_input)4++
- move.4 hash_input_3, (an_data_input)4++
- move.4 hash_input_4, D0
-
- move.4 hash_input_0, (an_data_input)4++
- move.4 hash_input_1, (an_data_input)4++
- move.4 hash_input_2, (an_data_input)4++
- move.4 hash_input_3, (an_data_input)4++
- move.4 hash_input_4, D0
-
- move.4 hash_input_0, (an_data_input)4++
- move.4 hash_input_1, (an_data_input)4++
- move.4 hash_input_2, (an_data_input)4++
- move.4 hash_input_3, (an_data_input)4++
- move.4 hash_input_4, D0
-
- pipe_flush 0
-
-sha1_ip5k_transform_wait:
- ; wait for the module to calculate the output hash
- btst hash_status, #0
- jmpne.f sha1_ip5k_transform_wait
-
- call_return_macro
- .endfunc
-
-;*****************************************************************************************
-; void sha1_ip5k_output(u32_t *digest)
-; Return the hash of the input data
-
- ;.section .text.sha1_ip5k_output,"ax",@progbits
- .section .ocm_text,"ax",@progbits
- .global _sha1_ip5k_output
- .func sha1_ip5k_output, _sha1_ip5k_output
-
-_sha1_ip5k_output:
- movea an_digest, D0
-
- moveai an_security_block, #SECURITY_BASE_EFFECTIVE_ADDRESS
-
- ; we have finished
- move.4 0(an_digest), hash_output_0
- move.4 4(an_digest), hash_output_1
- move.4 8(an_digest), hash_output_2
- move.4 12(an_digest), hash_output_3
- move.4 16(an_digest), hash_output_4
-
- call_return_macro
- .endfunc
-
-;*****************************************************************************************
-;END ;End of program code
-;*****************************************************************************************
projects / openwrt.git / blobdiff