iPod Classic: hardware AES and SHA1 for bootloader
Based on emCORE. Low level functions that do not depend on Rockbox kernel, intended to be used by the bootloader, dualboot-installer, RB drivers or other .dfu tools. Change-Id: I3c616ded42260c6626bda23b7e580791981df61d
This commit is contained in:
Cástor Muñoz
parent
57a44854e3
commit
bf89c757dd
3 changed files with 149 additions and 0 deletions
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@ -1629,6 +1629,7 @@ target/arm/s5l8702/ipod6g/audio-ipod6g.c
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target/arm/s5l8702/ipod6g/adc-ipod6g.c
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#else
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target/arm/s5l8702/spi-s5l8702.c
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target/arm/s5l8702/crypto-s5l8702.c
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#endif
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#endif
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102
firmware/target/arm/s5l8702/crypto-s5l8702.c
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102
firmware/target/arm/s5l8702/crypto-s5l8702.c
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@ -0,0 +1,102 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright © 2009 Michael Sparmann
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "config.h"
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#include "system.h"
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#include "s5l8702.h"
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#include "clocking-s5l8702.h"
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#include "crypto-s5l8702.h"
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void hwkeyaes(enum hwkeyaes_direction direction, uint32_t keyidx, void* data, uint32_t size)
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{
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int i;
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clockgate_enable(CLOCKGATE_AES, true);
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for (i = 0; i < 4; i++) AESIV[i] = 0;
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AESUNKREG0 = 1;
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AESUNKREG0 = 0;
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AESCONTROL = 1;
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AESUNKREG1 = 0;
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AESTYPE = keyidx;
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AESTYPE2 = ~AESTYPE;
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AESUNKREG2 = 0;
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AESKEYLEN = direction == HWKEYAES_ENCRYPT ? 9 : 8;
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AESOUTSIZE = size;
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AESOUTADDR = data;
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AESINSIZE = size;
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AESINADDR = data;
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AESAUXSIZE = size;
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AESAUXADDR = data;
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AESSIZE3 = size;
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commit_discard_dcache();
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AESGO = 1;
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while (!(AESSTATUS & 0xf));
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clockgate_enable(CLOCKGATE_AES, false);
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}
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void sha1(void* data, uint32_t size, void* hash)
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{
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int i, space;
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bool done = false;
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uint32_t tmp32[16];
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uint8_t* tmp8 = (uint8_t*)tmp32;
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uint32_t* databuf = (uint32_t*)data;
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uint32_t* hashbuf = (uint32_t*)hash;
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clockgate_enable(CLOCKGATE_SHA, true);
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SHA1RESET = 1;
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while (SHA1CONFIG & 1);
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SHA1RESET = 0;
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SHA1CONFIG = 0;
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while (!done)
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{
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space = ((uint32_t)databuf) - ((uint32_t)data) - size + 64;
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if (space > 0)
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{
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for (i = 0; i < 16; i++) tmp32[i] = 0;
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if (space <= 64)
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{
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for (i = 0; i < 64 - space; i++)
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tmp8[i] = ((uint8_t*)databuf)[i];
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tmp8[64 - space] = 0x80;
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}
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if (space >= 8)
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{
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tmp8[0x3b] = (size >> 29) & 0xff;
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tmp8[0x3c] = (size >> 21) & 0xff;
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tmp8[0x3d] = (size >> 13) & 0xff;
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tmp8[0x3e] = (size >> 5) & 0xff;
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tmp8[0x3f] = (size << 3) & 0xff;
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done = true;
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}
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for (i = 0; i < 16; i++) SHA1DATAIN[i] = tmp32[i];
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}
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else
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for (i = 0; i < 16; i++) SHA1DATAIN[i] = *databuf++;
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SHA1CONFIG |= 2;
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while (SHA1CONFIG & 1);
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SHA1CONFIG |= 8;
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}
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for (i = 0; i < 5; i++) *hashbuf++ = SHA1RESULT[i];
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clockgate_enable(CLOCKGATE_SHA, false);
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}
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46
firmware/target/arm/s5l8702/crypto-s5l8702.h
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46
firmware/target/arm/s5l8702/crypto-s5l8702.h
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@ -0,0 +1,46 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id:
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*
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* Copyright © 2009 Michael Sparmann
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef __CRYPTO_S5L8702_H__
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#define __CRYPTO_S5L8702_H__
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#include <stdint.h>
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#include "config.h"
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#define SHA1_SZ 20 /* bytes */
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enum hwkeyaes_direction
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{
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HWKEYAES_DECRYPT = 0,
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HWKEYAES_ENCRYPT = 1
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};
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enum hwkeyaes_keyidx
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{
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HWKEYAES_GKEY = 1, /* device model key */
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HWKEYAES_UKEY = 2 /* device unique key */
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};
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void hwkeyaes(enum hwkeyaes_direction direction,
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uint32_t keyidx, void* data, uint32_t size);
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void sha1(void* data, uint32_t size, void* hash);
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#endif /* __CRYPTO_S5L8702_H__ */
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