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133 lines
4.0 KiB
C
133 lines
4.0 KiB
C
#pragma once
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/*
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* This file is part of open_agb_firm
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* Copyright (C) 2021 derrek, profi200
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "types.h"
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#include "error_codes.h"
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#define MAX_ROM_SIZE (1024u * 1024 * 32)
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#define MAX_SAVE_SIZE (1024u * 128)
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#define ARM7_STUB_LOC (0x3007E00u)
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#define ARM7_STUB_LOC9 (0x80BFE00u)
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#define ROM_LOC (0x20000000u)
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#define SAVE_LOC (0x8080000u)
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// REG_LGY_MODE
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#define LGY_MODE_TWL (1u)
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#define LGY_MODE_AGB (2u)
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#define LGY_MODE_START (1u<<15)
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// REG_LGY_GBA_SAVE_TYPE
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enum
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{
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SAVE_TYPE_EEPROM_8k = 0x0u, // "[save] in upper 16Mbyte of ROM area"
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SAVE_TYPE_EEPROM_8k_2 = 0x1u, // "[save] in upper 100h byte of ROM area"
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SAVE_TYPE_EEPROM_64k = 0x2u, // "[save] in upper 16Mbyte of ROM area"
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SAVE_TYPE_EEPROM_64k_2 = 0x3u, // "[save] in upper 100h byte of ROM area"
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SAVE_TYPE_FLASH_512k_AML_RTC = 0x4u, // "FLASH ID=3D1Fh, Atmel"
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SAVE_TYPE_FLASH_512k_AML = 0x5u, // "FLASH ID=3D1Fh, Atmel"
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SAVE_TYPE_FLASH_512k_SST_RTC = 0x6u, // "FLASH ID=D4BFh, SST"
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SAVE_TYPE_FLASH_512k_SST = 0x7u, // "FLASH ID=D4BFh, SST"
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SAVE_TYPE_FLASH_512k_PSC_RTC = 0x8u, // "FLASH ID=1B32h, Panasonic"
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SAVE_TYPE_FLASH_512k_PSC = 0x9u, // "FLASH ID=1B32h, Panasonic"
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SAVE_TYPE_FLASH_1m_MRX_RTC = 0xAu, // "FLASH ID=09C2h, Macronix"
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SAVE_TYPE_FLASH_1m_MRX = 0xBu, // "FLASH ID=09C2h, Macronix"
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SAVE_TYPE_FLASH_1m_SNO_RTC = 0xCu, // "FLASH ID=1362h, Sanyo"
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SAVE_TYPE_FLASH_1m_SNO = 0xDu, // "FLASH ID=1362h, Sanyo"
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SAVE_TYPE_SRAM_256k = 0xEu,
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SAVE_TYPE_NONE = 0xFu,
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SAVE_TYPE_MASK = SAVE_TYPE_NONE
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};
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// REG_LGY_GBA_SAVE_MAP
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#define LGY_SAVE_MAP_7 (0u)
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#define LGY_SAVE_MAP_9 (1u)
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// REG_LGY_GBA_RTC_CNT
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#define LGY_RTC_CNT_WR (1u) // Write date and time.
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#define LGY_RTC_CNT_RD (1u<<1) // Read date and time.
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#define LGY_RTC_CNT_WR_ERR (1u<<14) // Write error (wrong date/time).
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#define LGY_RTC_CNT_BUSY (1u<<15)
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// REG_LGY_GBA_RTC_BCD_DATE
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// Shifts
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#define LGY_RTC_BCD_Y_SHIFT (0u)
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#define LGY_RTC_BCD_MON_SHIFT (8u)
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#define LGY_RTC_BCD_D_SHIFT (16u)
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#define LGY_RTC_BCD_W_SHIFT (24u)
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// Masks
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#define LGY_RTC_BCD_Y_MASK (0xFFu<<LGY_RTC_BCD_Y_SHIFT)
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#define LGY_RTC_BCD_MON_MASK (0x1Fu<<LGY_RTC_BCD_M_SHIFT)
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#define LGY_RTC_BCD_D_MASK (0x3Fu<<LGY_RTC_BCD_D_SHIFT)
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#define LGY_RTC_BCD_W_MASK (0x07u<<LGY_RTC_BCD_W_SHIFT)
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// REG_LGY_GBA_RTC_BCD_TIME
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// Shifts
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#define LGY_RTC_BCD_H_SHIFT (0u)
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#define LGY_RTC_BCD_MIN_SHIFT (8u)
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#define LGY_RTC_BCD_S_SHIFT (16u)
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// Masks
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#define LGY_RTC_BCD_H_MASK (0x3Fu<<LGY_RTC_BCD_H_SHIFT)
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#define LGY_RTC_BCD_MIN_MASK (0x7Fu<<LGY_RTC_BCD_MIN_SHIFT)
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#define LGY_RTC_BCD_S_MASK (0x7Fu<<LGY_RTC_BCD_S_SHIFT)
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// All values in BCD.
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typedef struct
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{
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union
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{
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struct
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{
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u8 h;
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u8 min;
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u8 s;
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u8 unused;
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};
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u32 time;
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};
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union
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{
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struct
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{
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u8 y;
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u8 mon;
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u8 d;
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u8 dow; // Day of week.
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};
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u32 date;
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};
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} ALIGN(8) GbaRtc; // Workaround: Poor optimization on pass by value.
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// REGs_LGY_GBA_SAVE_TIMING
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Result LGY_prepareGbaMode(bool directBoot, u16 saveType, const char *const savePath);
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Result LGY_setGbaRtc(const GbaRtc rtc);
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Result LGY_getGbaRtc(GbaRtc *const out);
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Result LGY_backupGbaSave(void);
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#ifdef ARM11
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void LGY_switchMode(void);
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void LGY_handleOverrides(void);
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void LGY_deinit(void);
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#endif
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