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https://github.com/modmii/YAWM-ModMii-Edition.git
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60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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/*
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mini - a Free Software replacement for the Nintendo/BroadOn IOS.
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SEEPROM support
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Copyright (C) 2008, 2009 Sven Peter <svenpeter@gmail.com>
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# This code is licensed to you under the terms of the GNU GPL, version 2;
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# see http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
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*/
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#ifndef __MINI_SEEPROM_H__
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#define __MINI_SEEPROM_H__
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#define SEEPROM_SIZE 0x100
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typedef struct
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{
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union {
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struct {
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u8 boot2version;
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u8 unknown1;
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u8 unknown2;
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u8 pad;
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u32 update_tag;
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};
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u8 data[8];
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};
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u16 checksum; // sum of data[] elements?
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} __attribute__((packed)) eep_boot2_ctr_t;
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typedef struct
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{
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union {
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u32 nand_gen; // matches offset 0x8 in nand SFFS blocks
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u8 data[4];
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};
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u16 checksum; // sum of data[] elements?
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} __attribute__((packed)) eep_nand_ctr_t;
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struct SEEPROM
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{
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u32 ms_id; // 0x00000002
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u32 ca_id; // 0x00000001
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u32 ng_key_id;
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u8 ng_sig[60];
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eep_boot2_ctr_t boot2_counters[2];
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eep_nand_ctr_t nand_counters[3]; // current slot rotates on each write
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u8 pad0[6];
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u8 korean_key[16];
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u8 pad1[116];
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u16 prng_seed[2]; // u32 with lo word stored first, incremented every time IOS starts. Used with the PRNG key to setup IOS's PRNG (syscalls 73/74 etc.)
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u8 pad2[4];
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};
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_Static_assert(sizeof(struct SEEPROM) == SEEPROM_SIZE, "SEEPROM struct size incorrect!");
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u16 seeprom_read(void *dst, u16 offset, u16 size);
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// u16 seeprom_write(const void *src, u16 offset, u16 size);
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#endif /* __MINI_SEEPROM_H__ */
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