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a29b570ac4
Since the SPI NOR flash is only used for the bootloader, rename the files accordingly, This is a preparation for the nandboot driver will be introduced, since S5L8720+ don't have an SPI NOR flash anymore. This is a part of the large iPod Nano 4G and iPod Touch 2G support patch. Credit: Cástor Muñoz <cmvidal@gmail.com> Change-Id: Iea835fd2029470bfe9f813631ad4f3db711facc3
195 lines
6.4 KiB
C
195 lines
6.4 KiB
C
/***************************************************************************
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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 __NOR_TARGET_H__
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#define __NOR_TARGET_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include "config.h"
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#include "crypto-s5l8702.h"
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/* NOR memory map (Classic 6G):
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*
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* 1MB ______________
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* | |
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* | flsh DIR |
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* 1MB-0x200 |______________|
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* | |
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* | File 1 |
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* |..............|
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* | |
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* | File 2 |
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* |..............|
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* | |
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* . .
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* . .
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* . .
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* | |
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* |..............|
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* | |
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* | File N |
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* |______________|
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* | |
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* | |
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* | |
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* | | IM3 (128KB)
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* | Unused | . . . . . . ______________
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* | | / | |
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* | | / | |
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* | | / | |
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* 160KB |______________|/ | |
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* | | | |
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* | | | EFI |
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* | Original | | Volumen |
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* | NOR Boot | | |
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* | | | |
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* | | | |
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* 32KB |______________| | |
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* | |\ 0x800 |______________|
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* | | \ | |
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* | | \ | IM3 Header |
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* |______________| \ . . . . . . |______________|
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* | |
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* | SysCfg |
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* 0 |______________|
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*/
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#define SPI_PORT 0
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#define NOR_SZ 0x100000
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#define NORBOOT_OFF 0x8000
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#define NORBOOT_MAXSZ 0x20000
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void bootflash_init(int port);
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void bootflash_read(int port, uint32_t addr, uint32_t size, void* buf);
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void bootflash_write(int port, int offset, void* addr, int size);
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int bootflash_compare(int port, int offset, void* addr, int size);
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void bootflash_erase_blocks(int port, int first, int n);
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void bootflash_close(int port);
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/*
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* SysCfg
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*/
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struct SysCfgHeader {
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uint32_t magic; // always 'SCfg'
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uint32_t size;
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uint32_t unknown1; // 0x00000200 on iPod classic
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uint32_t version; // maybe? 0x00010001 on iPod classic
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uint32_t unknown2; // 0x00000000 on iPod classic
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uint32_t num_entries;
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}; // 0x18
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struct SysCfgEntry {
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uint32_t tag;
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uint8_t data[0x10];
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};
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#define SYSCFG_MAGIC 0x53436667 // SCfg
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#define SYSCFG_TAG_SRNM 0x53724e6d // SrNm
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#define SYSCFG_TAG_FWID 0x46774964 // FwId
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#define SYSCFG_TAG_HWID 0x48774964 // HwId
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#define SYSCFG_TAG_HWVR 0x48775672 // HwVr
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#define SYSCFG_TAG_CODC 0x436f6463 // Codc
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#define SYSCFG_TAG_SWVR 0x53775672 // SwVr
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#define SYSCFG_TAG_MLBN 0x4d4c424e // MLBN
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#define SYSCFG_TAG_MODN 0x4d6f6423 // Mod#
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#define SYSCFG_TAG_REGN 0x5265676e // Regn
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/*
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* IM3
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*/
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#define IM3_IDENT "8702"
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#define IM3_VERSION "1.0"
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#define IM3HDR_SZ 0x800
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#define IM3INFO_SZ (sizeof(struct Im3Info))
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#define IM3INFOSIGN_SZ (offsetof(struct Im3Info, info_sign))
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#define SIGN_SZ 16
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struct Im3Info
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{
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uint8_t ident[4];
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uint8_t version[3];
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uint8_t enc_type;
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uint8_t entry[4]; /* LE */
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uint8_t data_sz[4]; /* LE */
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union {
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struct {
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uint8_t data_sign[SIGN_SZ];
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uint8_t _reserved[32];
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} enc12;
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struct {
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uint8_t sign_off[4]; /* LE */
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uint8_t cert_off[4]; /* LE */
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uint8_t cert_sz[4]; /* LE */
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uint8_t _reserved[36];
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} enc34;
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} u;
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uint8_t info_sign[SIGN_SZ];
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} __attribute__ ((packed));
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struct Im3Hdr
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{
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struct Im3Info info;
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uint8_t _zero[IM3HDR_SZ - sizeof(struct Im3Info)];
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} __attribute__ ((packed));
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unsigned im3_nor_sz(struct Im3Info* hinfo);
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void im3_sign(uint32_t keyidx, void* data, uint32_t size, void* sign);
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void im3_crypt(enum hwkeyaes_direction direction,
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struct Im3Info *hinfo, void *fw_addr);
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int im3_read(uint32_t offset, struct Im3Info *hinfo, void *fw_addr);
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bool im3_write(int offset, void *im3_addr);
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/*
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* flsh FS
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*/
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#define DIR_SZ 0x200
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#define DIR_OFF (NOR_SZ - DIR_SZ)
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#define ENTRY_SZ ((int)sizeof(image_t))
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#define MAX_ENTRY (DIR_SZ / ENTRY_SZ)
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#define FILEHDR_SZ 0x200
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/* from tools/ipod_fw.c */
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typedef struct _image {
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char type[4]; /* '' */
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unsigned id; /* */
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char pad1[4]; /* 0000 0000 */
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unsigned devOffset; /* byte offset of start of image code */
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unsigned len; /* length in bytes of image */
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unsigned addr; /* load address */
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unsigned entryOffset; /* execution start within image */
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unsigned chksum; /* checksum for image */
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unsigned vers; /* image version */
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unsigned loadAddr; /* load address for image */
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} image_t;
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int flsh_get_info(int *used, int *unused);
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unsigned flsh_get_unused(void);
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int flsh_find_file(char *name, image_t *entry);
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int flsh_load_file(image_t *entry, void *hdr, void *data);
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#endif /* __NOR_TARGET_H__ */
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