From 7083110f8154f6ca47845fc747bad5062515658c Mon Sep 17 00:00:00 2001 From: Cástor Muñoz Date: Fri, 5 Feb 2016 00:49:33 +0100 Subject: iPod Classic: NOR support for bootloader - NOR driver (based on emCORE) - read/write IM3 images - read 'flsh' files Change-Id: Ie0654e0d298affc0f47ed64b823767118bd1aa3f --- firmware/target/arm/s5l8702/nor-target.h | 167 +++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 firmware/target/arm/s5l8702/nor-target.h (limited to 'firmware/target/arm/s5l8702/nor-target.h') diff --git a/firmware/target/arm/s5l8702/nor-target.h b/firmware/target/arm/s5l8702/nor-target.h new file mode 100644 index 0000000000..4ebe1d58d4 --- /dev/null +++ b/firmware/target/arm/s5l8702/nor-target.h @@ -0,0 +1,167 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id: + * + * Copyright © 2009 Michael Sparmann + * + * This program 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. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#ifndef __NOR_TARGET_H__ +#define __NOR_TARGET_H__ + +#include +#include + +#include "config.h" +#include "crypto-s5l8702.h" + + +/* NOR memory map (Classic 6G): + * + * 1MB ______________ + * | | + * | flsh DIR | + * 1MB-0x200 |______________| + * | | + * | File 1 | + * |..............| + * | | + * | File 2 | + * |..............| + * | | + * . . + * . . + * . . + * | | + * |..............| + * | | + * | File N | + * |______________| + * | | + * | | + * | | + * | | IM3 (128KB) + * | Unused | . . . . . . ______________ + * | | / | | + * | | / | | + * | | / | | + * 160KB |______________|/ | | + * | | | | + * | | | EFI | + * | Original | | Volumen | + * | NOR Boot | | | + * | | | | + * | | | | + * 32KB |______________| | | + * | |\ 0x800 |______________| + * | | \ | | + * | | \ | IM3 Header | + * |______________| \ . . . . . . |______________| + * | | + * | SysCfg | + * 0 |______________| + */ + +#define SPI_PORT 0 + +#define NOR_SZ 0x100000 +#define NORBOOT_OFF 0x8000 +#define NORBOOT_MAXSZ 0x20000 + +void bootflash_init(int port); +void bootflash_read(int port, uint32_t addr, uint32_t size, void* buf); +void bootflash_write(int port, int offset, void* addr, int size); +int bootflash_compare(int port, int offset, void* addr, int size); +void bootflash_erase_blocks(int port, int first, int n); +void bootflash_close(int port); + + +/* + * IM3 + */ +#define IM3_IDENT "8702" +#define IM3_VERSION "1.0" +#define IM3HDR_SZ 0x800 +#define IM3INFO_SZ (sizeof(struct Im3Info)) +#define IM3INFOSIGN_SZ (offsetof(struct Im3Info, info_sign)) + +#define SIGN_SZ 16 + +struct Im3Info +{ + uint8_t ident[4]; + uint8_t version[3]; + uint8_t enc_type; + uint8_t entry[4]; /* LE */ + uint8_t data_sz[4]; /* LE */ + union { + struct { + uint8_t data_sign[SIGN_SZ]; + uint8_t _reserved[32]; + } enc12; + struct { + uint8_t sign_off[4]; /* LE */ + uint8_t cert_off[4]; /* LE */ + uint8_t cert_sz[4]; /* LE */ + uint8_t _reserved[36]; + } enc34; + } u; + uint8_t info_sign[SIGN_SZ]; +} __attribute__ ((packed)); + +struct Im3Hdr +{ + struct Im3Info info; + uint8_t _zero[IM3HDR_SZ - sizeof(struct Im3Info)]; +} __attribute__ ((packed)); + +unsigned im3_nor_sz(struct Im3Info* hinfo); +void im3_sign(uint32_t keyidx, void* data, uint32_t size, void* sign); +void im3_crypt(enum hwkeyaes_direction direction, + struct Im3Info *hinfo, void *fw_addr); +int im3_read(uint32_t offset, struct Im3Info *hinfo, void *fw_addr); +bool im3_write(int offset, void *im3_addr); + + +/* + * flsh FS + */ +#define DIR_SZ 0x200 +#define DIR_OFF (NOR_SZ - DIR_SZ) +#define ENTRY_SZ ((int)sizeof(image_t)) +#define MAX_ENTRY (DIR_SZ / ENTRY_SZ) + +#define FILEHDR_SZ 0x200 + +/* from tools/ipod_fw.c */ +typedef struct _image { + char type[4]; /* '' */ + unsigned id; /* */ + char pad1[4]; /* 0000 0000 */ + unsigned devOffset; /* byte offset of start of image code */ + unsigned len; /* length in bytes of image */ + unsigned addr; /* load address */ + unsigned entryOffset; /* execution start within image */ + unsigned chksum; /* checksum for image */ + unsigned vers; /* image version */ + unsigned loadAddr; /* load address for image */ +} image_t; + +int flsh_get_info(int *used, int *unused); +unsigned flsh_get_unused(void); +int flsh_find_file(char *name, image_t *entry); +int flsh_load_file(image_t *entry, void *hdr, void *data); + +#endif /* __NOR_TARGET_H__ */ -- cgit v1.2.3