mirror of
https://github.com/rvtr/ntr_bootrom.git
synced 2025-10-31 07:11:11 -04:00
371 lines
7.8 KiB
ArmAsm
371 lines
7.8 KiB
ArmAsm
;********************************************************************
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; IRIS-SUBPモニタプログラム スタートアップルーチン
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;********************************************************************
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AREA Init, CODE, READONLY
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INCLUDE IrisSubpDefineArm.s
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INCLUDE IrisSubpMemoryMapArm.s
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INCLUDE IrisSubpMonDefineArm.s
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INCLUDE IrisSubpMonMemoryMapArm.s
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ENTRY
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;====================================================================
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; 割り込み領域
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;====================================================================
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EXTERN start_handler
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EXTERN swi_handler
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EXTERN irq_handler
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EXTERN fiq_handler
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CODE32
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start_v b start_m ; NULLポインタ位置のコードを不変にするため
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undef_v b fiq_handler
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swi_v b swi_handler
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code_abort_v b fiq_handler
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data_abort_v b fiq_handler
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reserve_v b fiq_handler
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irq_v b irq_handler
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fiq_v b fiq_handler
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start_m b start_handler
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IF :DEF: DISABLE_SECURE_CODE
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ELSE
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; PNデータ
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GLOBAL default_pnB_l
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GLOBAL default_pnB_h
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GLOBAL default_pnA_l_0_table
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GLOBAL default_pnA_l_1
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default_pnB_l
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DCD 0x879b9b05
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default_pnB_h
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DCB 0x5c
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default_pnA_l_1
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DCB 0x60
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default_pnA_l_0_table
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DCB 0xe8, 0x4d, 0x5a, 0xb1, 0x17, 0x8f
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; Blowfishデータ
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IF :DEF: ENABLE_TEST_BLOWFISH
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INCLUDE BlowfishTestTable.s
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ELSE
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INCLUDE BlowfishInitTable.s
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ENDIF ; ENABLE_TEST_BLOWFISH
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GLOBAL segmentIndexTable4Secure
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segmentIndexTable4Secure
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DCB 4_0132, 4_0213, 4_0231, 4_0312 ; - 4_0123, 4_0321
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DCB 4_1023, 4_1203, 4_1302, 4_1320 ; - 4_1032, 4_1230
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DCB 4_2103, 4_2130, 4_2301, 4_2310 ; - 4_2013, 4_2031
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DCB 4_3012, 4_3021, 4_3120, 4_3201 ; - 4_3102, 4_3210
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GLOBAL normal_mode_key
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normal_mode_key
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DCB "NmMdOnly"
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GLOBAL png_off_key
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png_off_key
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DCB "enPngOFF"
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GLOBAL encrypt_object_key
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encrypt_object_key
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DCB "encryObj"
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; SIOハンドシェイクデータ
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ALIGN
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GLOBAL sio_send_code
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GLOBAL sio_recv_code
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GLOBAL sio_add_code
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sio_send_code
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DCW 0x4e54
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sio_recv_code
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DCW 0x4944
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sio_add_code
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DCW 0x524f
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ENDIF ; DISABLE_SECURE_CODE
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;--------------------------------------------------------------------
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; 暗号キー変換（r0=暗号キー）
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;--------------------------------------------------------------------
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IF :DEF: DISABLE_SECURE_CODE
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ELSE
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GLOBAL ChangeEncryptKey1
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GLOBAL ChangeEncryptKey2
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GLOBAL ChangeEncryptKey3
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GLOBAL ChangeEncryptKey4
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ALIGN
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CODE32
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ChangeEncryptKey1
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mov r0, r0, lsr #1
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b CheckLR2Return
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ChangeEncryptKey2
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mov r0, r0, lsl #1
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b CheckLR2Return
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ChangeEncryptKey3
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mov r0, r0, lsl #1
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b CheckLR2Return
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ChangeEncryptKey4
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mov r0, r0, lsr #1
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b CheckLR2Return
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CheckLR2Return
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tst lr, #0xff000000
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movne r0, #0
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movne lr, #4
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bx lr
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ENDIF ; DISABLE_SECURE_CODE
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;--------------------------------------------------------------------
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; 暗号処理フック関数群
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;--------------------------------------------------------------------
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IF :DEF: DISABLE_SECURE_CODE
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ELSE
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EXTERN InitSecureParam
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EXTERN MakeBlowfishTable
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EXTERN InitBlowfishKeyAnaTable
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EXTERN InitBlowfish
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EXTERN EncryptByBlowfish
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EXTERN DecryptByBlowfish
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EXTERN DecryptObjectFile
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EXTERN ChangeObjectTable
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EXTERN CopyBiosArea
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EXTERN CpuSetFast32
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GLOBAL InitSecureParamFook
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GLOBAL MakeBlowfishCardTable
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GLOBAL MakeBlowfishFlashTable
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GLOBAL InitBlowfishKeyAnaTableFook
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GLOBAL InitBlowfishFook
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GLOBAL EncryptByBlowfishFook0
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GLOBAL EncryptByBlowfishFook1
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GLOBAL EncryptByBlowfishFook2
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GLOBAL DecryptByBlowfishFook
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GLOBAL DecryptObjectFileFook
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GLOBAL ChangeObjectTableFook
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GLOBAL CopyBiosAreaFook
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GLOBAL CpuSetFast32Fook
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ALIGN
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CODE32
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InitSecureParamFook
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ldr r12, =InitSecureParam
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b CheckLR2CallR12
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MakeBlowfishCardTable
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mov r3, #8
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ldr r12, =MakeBlowfishTable
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b CheckLR2CallR12
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MakeBlowfishFlashTable
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mov r3, #12
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ldr r12, =MakeBlowfishTable
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b CheckLR2CallR12
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InitBlowfishKeyAnaTableFook
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ldr r12, =InitBlowfishKeyAnaTable
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b CheckLR2CallR12
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InitBlowfishFook
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ldr r12, =InitBlowfish
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b CheckLR2CallR12
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EncryptByBlowfishFook0
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ldr r12, =EncryptByBlowfish
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b CheckLR2CallR12
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EncryptByBlowfishFook1
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mov r2, r1
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add r1, r1, #4
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ldr r12, =EncryptByBlowfish
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b CheckLR2CallR12
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EncryptByBlowfishFook2
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add r2, r1, #4
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add r1, r1, #8
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ldr r12, =EncryptByBlowfish
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b CheckLR2CallR12
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DecryptByBlowfishFook
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mov r2, r1
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add r1, r1, #4
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ldr r12, =DecryptByBlowfish
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b CheckLR2CallR12
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DecryptObjectFileFook
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ldr r12, =DecryptObjectFile
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b CheckLR2CallR12
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ChangeObjectTableFook
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mov r0, #8
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ldr r12, =ChangeObjectTable
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b CheckLR2CallR12
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CopyBiosAreaFook
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ldr r12, =CopyBiosArea
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b CheckLR2CallR12
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CpuSetFast32Fook
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ldr r12, =CpuSetFast32
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b CheckLR2CallR12
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CheckLR2CallR12
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tst lr, #0xff000000
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bxeq r12
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mov r12,#0
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mov r3, #0
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mov r2, #0
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mov r1, #0
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mov r0, #0
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mov lr, #4
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bx lr
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ENDIF ; DISABLE_SECURE_CODE
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;--------------------------------------------------------------------
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; IPL2呼び出し関数ポインタ獲得
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;--------------------------------------------------------------------
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EXTERN CalledFormIPL2
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EXTERN CardIntr
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GLOBAL GetFuncp4IPL2
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CODE16
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GetFuncp4IPL2
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ldr r2, eor_code
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ldr r0, =CalledFormIPL2
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ldr r1, =CardIntr
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ldr r3, =SetPause2Agb
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eor r3, r3, r0
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eor r0, r0, r1
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eor r1, r1, r2
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bx lr
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ALIGN
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eor_code
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DCB "I2\0\0" ; EORコード
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;--------------------------------------------------------------------
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; チェックフラグ セット
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;--------------------------------------------------------------------
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GLOBAL SetPauseCheckFlag
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CODE16
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SetPauseCheckFlag
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mov r1, #1
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ldr r2, =REG_PAUSE
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strb r1, [r2, #0]
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bx lr
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;--------------------------------------------------------------------
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; ＡＧＢモード遷移
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;--------------------------------------------------------------------
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GLOBAL SetPause2Agb
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ALIGN
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CODE32
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SetPause2Agb mov r2, #0x40
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b SetPauseHi
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;--------------------------------------------------------------------
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; ＨＡＬＴ
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;--------------------------------------------------------------------
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GLOBAL Halt
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CODE32
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Halt mov r2, #0x80
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b SetPauseHi
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;--------------------------------------------------------------------
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; ＳＴＯＰ
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;--------------------------------------------------------------------
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GLOBAL Stop
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GLOBAL SetPauseHi
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CODE32
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Stop mov r2, #0xc0
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SetPauseHi mov r12, #REG_BASE
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strb r2, [r12, #OFFSET_REG_PAUSE + 1]
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nop
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nop
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bx lr
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LTORG ; 上記のリテラルプールを隠す
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GLOBAL SecureAreaEndp
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SecureAreaEndp
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IF :DEF: ENABLE_WRITE_FLASH
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GLOBAL flashTestHeader
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flashTestHeader
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DCD 0 ; MACアドレス Low
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DCW 0 ; High
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DCW 0xc401 ; CRC16bit
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DCB "MACP" ; Blowfishキーデータ
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DCW 0x100/8 ; ARM9-FLASHオフセット
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DCW 0x20000/8 ; ARM9-RAM負オフセット
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DCW 0x10000/8 ; ARM7-FLASHオフセット
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DCW 0x8000/8 ; ARM7-RAM負オフセット
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DCW 8_01111 ; 境界2bit x 4 & ARM7-ARM配置フラグ & 予約7bit
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DCW 0 ; 予約2Byte
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DCD 0 ; 0x9e0d35bd ; スクランブル解除キー（8バイト）
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DCD 0 ; 0x2560ac91
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GLOBAL arm9ipl2
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GLOBAL arm9ipl2_end
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ALIGN
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arm9ipl2
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IF :DEF: DISABLE_SECURE_CODE
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INCBIN ipl2_test.lz
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ELSE
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INCBIN ipl2_test.ipl2
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ENDIF ; DISABLE_SECURE_CODE
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arm9ipl2_end
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GLOBAL arm7ipl2
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GLOBAL arm7ipl2_end
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ALIGN
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arm7ipl2
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IF :DEF: DISABLE_SECURE_CODE
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INCBIN subp_ipl2_test.lz
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ELSE
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INCBIN subp_ipl2_test.ipl2
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ENDIF ; DISABLE_SECURE_CODE
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arm7ipl2_end
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ENDIF ; ENABLE_WRITE_FLASH
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END
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