duckstation

duckstation, but archived from the revision just before upstream changed it to a proprietary software project, this version is the libre one
git clone https://git.neptards.moe/u3shit/duckstation.git
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bios.cpp (29751B)


      1 // SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com> and contributors.
      2 // SPDX-License-Identifier: (GPL-3.0 OR PolyForm-Strict-1.0.0)
      3 
      4 #include "bios.h"
      5 #include "cpu_disasm.h"
      6 #include "host.h"
      7 #include "mips_encoder.h"
      8 #include "settings.h"
      9 
     10 #include "common/assert.h"
     11 #include "common/error.h"
     12 #include "common/file_system.h"
     13 #include "common/log.h"
     14 #include "common/md5_digest.h"
     15 #include "common/path.h"
     16 #include "common/string_util.h"
     17 
     18 Log_SetChannel(BIOS);
     19 
     20 namespace BIOS {
     21 static const ImageInfo* GetInfoForHash(const std::span<u8> image, const ImageInfo::Hash& hash);
     22 
     23 static constexpr ImageInfo::Hash MakeHashFromString(const char str[])
     24 {
     25   ImageInfo::Hash h{};
     26   for (int i = 0; str[i] != '\0'; i++)
     27   {
     28     u8 nibble = 0;
     29     char ch = str[i];
     30     if (ch >= '0' && ch <= '9')
     31       nibble = str[i] - '0';
     32     else if (ch >= 'a' && ch <= 'z')
     33       nibble = 0xA + (str[i] - 'a');
     34     else if (ch >= 'A' && ch <= 'Z')
     35       nibble = 0xA + (str[i] - 'A');
     36 
     37     h[i / 2] |= nibble << (((i & 1) ^ 1) * 4);
     38   }
     39   return h;
     40 }
     41 
     42 // clang-format off
     43 // Launch console BIOS is de-prioritized due to bugs.
     44 // Late PAL is de-prioritized due to additional regional checks that break import booting without fast boot.
     45 // PS2 is de-prioritized due to requiring a dynamic fast boot patch.
     46 // PS2 PAL is further de-prioritized due to additonal region checks.
     47 static constexpr const ImageInfo s_image_info_by_hash[] = {
     48   {"SCPH-1000, DTL-H1000 (v1.0)", ConsoleRegion::NTSC_J, MakeHashFromString("239665b1a3dade1b5a52c06338011044"), ImageInfo::FastBootPatch::Type1, 50},
     49   {"SCPH-1001, 5003, DTL-H1201, H3001 (v2.2 12-04-95 A)", ConsoleRegion::NTSC_U, MakeHashFromString("924e392ed05558ffdb115408c263dccf"), ImageInfo::FastBootPatch::Type1, 10},
     50   {"SCPH-1002, DTL-H1002 (v2.0 05-10-95 E)", ConsoleRegion::PAL, MakeHashFromString("54847e693405ffeb0359c6287434cbef"), ImageInfo::FastBootPatch::Type1, 10},
     51   {"SCPH-1002, DTL-H1102 (v2.1 07-17-95 E)", ConsoleRegion::PAL, MakeHashFromString("417b34706319da7cf001e76e40136c23"), ImageInfo::FastBootPatch::Type1, 10},
     52   {"SCPH-1002, DTL-H1202, H3002 (v2.2 12-04-95 E)", ConsoleRegion::PAL, MakeHashFromString("e2110b8a2b97a8e0b857a45d32f7e187"), ImageInfo::FastBootPatch::Type1, 10},
     53   {"DTL-H1100 (v2.2 03-06-96 D)", ConsoleRegion::NTSC_J, MakeHashFromString("ca5cfc321f916756e3f0effbfaeba13b"), ImageInfo::FastBootPatch::Type1, 20},
     54   {"SCPH-3000, DTL-H1000H (v1.1 01-22-95)", ConsoleRegion::NTSC_J, MakeHashFromString("849515939161e62f6b866f6853006780"), ImageInfo::FastBootPatch::Type1, 10},
     55   {"SCPH-1001, DTL-H1001 (v2.0 05-07-95 A)", ConsoleRegion::NTSC_U, MakeHashFromString("dc2b9bf8da62ec93e868cfd29f0d067d"), ImageInfo::FastBootPatch::Type1, 10},
     56   {"SCPH-3500 (v2.1 07-17-95 J)", ConsoleRegion::NTSC_J, MakeHashFromString("cba733ceeff5aef5c32254f1d617fa62"), ImageInfo::FastBootPatch::Type1, 10},
     57   {"SCPH-1001, DTL-H1101 (v2.1 07-17-95 A)", ConsoleRegion::NTSC_U, MakeHashFromString("da27e8b6dab242d8f91a9b25d80c63b8"), ImageInfo::FastBootPatch::Type1, 10},
     58   {"SCPH-5000, DTL-H1200, H3000 (v2.2 12-04-95 J)", ConsoleRegion::NTSC_J, MakeHashFromString("57a06303dfa9cf9351222dfcbb4a29d9"), ImageInfo::FastBootPatch::Type1, 5},
     59   {"SCPH-5500 (v3.0 09-09-96 J)", ConsoleRegion::NTSC_J, MakeHashFromString("8dd7d5296a650fac7319bce665a6a53c"), ImageInfo::FastBootPatch::Type1, 5},
     60   {"SCPH-5501, 5503, 7003 (v3.0 11-18-96 A)", ConsoleRegion::NTSC_U, MakeHashFromString("490f666e1afb15b7362b406ed1cea246"), ImageInfo::FastBootPatch::Type1, 5},
     61   {"SCPH-5502, 5552 (v3.0 01-06-97 E)", ConsoleRegion::PAL, MakeHashFromString("32736f17079d0b2b7024407c39bd3050"), ImageInfo::FastBootPatch::Type1, 5},
     62   {"SCPH-7000, 7500, 9000 (v4.0 08-18-97 J)", ConsoleRegion::NTSC_J, MakeHashFromString("8e4c14f567745eff2f0408c8129f72a6"), ImageInfo::FastBootPatch::Type1, 10},
     63   {"SCPH-7000W (v4.1 11-14-97 A)", ConsoleRegion::NTSC_J, MakeHashFromString("b84be139db3ee6cbd075630aa20a6553"), ImageInfo::FastBootPatch::Type1, 10},
     64   {"SCPH-7001, 7501, 7503, 9001, 9003, 9903 (v4.1 12-16-97 A)", ConsoleRegion::NTSC_U, MakeHashFromString("1e68c231d0896b7eadcad1d7d8e76129"), ImageInfo::FastBootPatch::Type1, 10},
     65   {"SCPH-7002, 7502, 9002 (v4.1 12-16-97 E)", ConsoleRegion::PAL, MakeHashFromString("b9d9a0286c33dc6b7237bb13cd46fdee"), ImageInfo::FastBootPatch::Type1, 20},
     66   {"SCPH-100 (v4.3 03-11-00 J)", ConsoleRegion::NTSC_J, MakeHashFromString("8abc1b549a4a80954addc48ef02c4521"), ImageInfo::FastBootPatch::Type1, 10},
     67   {"SCPH-101 (v4.4 03-24-00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("9a09ab7e49b422c007e6d54d7c49b965"), ImageInfo::FastBootPatch::Type1, 10},
     68   {"SCPH-101 (v4.5 05-25-00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("6e3735ff4c7dc899ee98981385f6f3d0"), ImageInfo::FastBootPatch::Type1, 10},
     69   {"SCPH-102 (v4.4 03-24-00 E)", ConsoleRegion::PAL, MakeHashFromString("b10f5e0e3d9eb60e5159690680b1e774"), ImageInfo::FastBootPatch::Type1, 20},
     70   {"SCPH-102 (v4.5 05-25-00 E)", ConsoleRegion::PAL, MakeHashFromString("de93caec13d1a141a40a79f5c86168d6"), ImageInfo::FastBootPatch::Type1, 20},
     71   {"SCPH-1000R (v4.5 05-25-00 J)", ConsoleRegion::NTSC_J, MakeHashFromString("476d68a94ccec3b9c8303bbd1daf2810"), ImageInfo::FastBootPatch::Type1, 10},
     72   {"PS2, SCPH-18000 (v5.0 10-27-00 J)", ConsoleRegion::NTSC_J, MakeHashFromString("d8f485717a5237285e4d7c5f881b7f32"), ImageInfo::FastBootPatch::Type2, 100},
     73   {"PS2, SCPH-30003 (v5.0 09-02-00 E)", ConsoleRegion::PAL, MakeHashFromString("71f50ef4f4e17c163c78908e16244f7d"), ImageInfo::FastBootPatch::Type2, 150},
     74   {"PS2, DTL-H10000 (v5.0 01/17/00 T)", ConsoleRegion::Auto, MakeHashFromString("32f2e4d5ff5ee11072a6bc45530f5765"), ImageInfo::FastBootPatch::Type2, 100},
     75   {"PS2, SCPH-10000 (v5.0 01/17/00 T)", ConsoleRegion::Auto, MakeHashFromString("acf4730ceb38ac9d8c7d8e21f2614600"), ImageInfo::FastBootPatch::Type2, 100},
     76   {"PS2, DTL-H10000 (v5.0 02/17/00 T)", ConsoleRegion::Auto, MakeHashFromString("acf9968c8f596d2b15f42272082513d1"), ImageInfo::FastBootPatch::Type2, 100},
     77   {"PS2, SCPH-10000/SCPH-15000 (v5.0 02/17/00 T)", ConsoleRegion::Auto, MakeHashFromString("b1459d7446c69e3e97e6ace3ae23dd1c"), ImageInfo::FastBootPatch::Type2, 100},
     78   {"PS2, DTL-H10000 (v5.0 02/24/00 T)", ConsoleRegion::Auto, MakeHashFromString("d3f1853a16c2ec18f3cd1ae655213308"), ImageInfo::FastBootPatch::Type2, 100},
     79   {"PS2, DTL-H30001 (v5.0 07/27/00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("63e6fd9b3c72e0d7b920e80cf76645cd"), ImageInfo::FastBootPatch::Type2, 100},
     80   {"PS2, SCPH-30001 (v5.0 07/27/00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("a20c97c02210f16678ca3010127caf36"), ImageInfo::FastBootPatch::Type2, 100},
     81   {"PS2, SCPH-30001 (v5.0 09/02/00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("8db2fbbac7413bf3e7154c1e0715e565"), ImageInfo::FastBootPatch::Type2, 100},
     82   {"PS2, DTL-H30002 (v5.0 09/02/00 E)", ConsoleRegion::PAL, MakeHashFromString("91c87cb2f2eb6ce529a2360f80ce2457"), ImageInfo::FastBootPatch::Type2, 150},
     83   {"PS2, DTL-H30102 (v5.0 09/02/00 E)", ConsoleRegion::PAL, MakeHashFromString("3016b3dd42148a67e2c048595ca4d7ce"), ImageInfo::FastBootPatch::Type2, 150},
     84   {"PS2, SCPH-30002/SCPH-30003/SCPH-30004 (v5.0 09/02/00 E)", ConsoleRegion::PAL, MakeHashFromString("b7fa11e87d51752a98b38e3e691cbf17"), ImageInfo::FastBootPatch::Type2, 100},
     85   {"PS2, SCPH-18000 (GH-003) (v5.0 10/27/00 J)", ConsoleRegion::NTSC_J, MakeHashFromString("f63bc530bd7ad7c026fcd6f7bd0d9525"), ImageInfo::FastBootPatch::Type2, 100},
     86   {"PS2, SCPH-18000 (GH-008) (v5.0 10/27/00 J)", ConsoleRegion::NTSC_J, MakeHashFromString("cee06bd68c333fc5768244eae77e4495"), ImageInfo::FastBootPatch::Type2, 100},
     87   {"PS2, DTL-H30101 (v5.0 12/28/00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("0bf988e9c7aaa4c051805b0fa6eb3387"), ImageInfo::FastBootPatch::Type2, 100},
     88   {"PS2, SCPH-30001/SCPH-35001 (v5.0 12/28/00 A)", ConsoleRegion::NTSC_U, MakeHashFromString("8accc3c49ac45f5ae2c5db0adc854633"), ImageInfo::FastBootPatch::Type2, 100},
     89   {"PS2, DTL-H30102 (v5.0 12/28/00 E)", ConsoleRegion::PAL, MakeHashFromString("6f9a6feb749f0533aaae2cc45090b0ed"), ImageInfo::FastBootPatch::Type2, 150},
     90   {"PS2, SCPH-30002/SCPH-30003/SCPH-30004/SCHP-35002/SCPH-35003/SCPH-35004 (v5.0 12/28/00 E)", ConsoleRegion::PAL, MakeHashFromString("838544f12de9b0abc90811279ee223c8"), ImageInfo::FastBootPatch::Type2, 100},
     91   {"PS2, DTL-H30000 (v5.0 01/18/01 J)", ConsoleRegion::NTSC_J, MakeHashFromString("bb6bbc850458fff08af30e969ffd0175"), ImageInfo::FastBootPatch::Type2, 100},
     92   {"PS2, SCPH-30000/SCPH-35000 (v5.0 01/18/01 J)", ConsoleRegion::NTSC_J, MakeHashFromString("815ac991d8bc3b364696bead3457de7d"), ImageInfo::FastBootPatch::Type2, 100},
     93   {"PS2, SCPH-30001R (v5.0 04/27/01 A)", ConsoleRegion::NTSC_U, MakeHashFromString("b107b5710042abe887c0f6175f6e94bb"), ImageInfo::FastBootPatch::Type2, 100},
     94   {"PS2, SCPH-30000 (v5.0 04/27/01 J)", ConsoleRegion::NTSC_J, MakeHashFromString("ab55cceea548303c22c72570cfd4dd71"), ImageInfo::FastBootPatch::Type2, 100},
     95   {"PS2, SCPH-30001R (v5.0 07/04/01 A)", ConsoleRegion::NTSC_U, MakeHashFromString("18bcaadb9ff74ed3add26cdf709fff2e"), ImageInfo::FastBootPatch::Type2, 100},
     96   {"PS2, SCPH-30002R/SCPH-30003R/SCPH-30004R (v5.0 07/04/01 E)", ConsoleRegion::PAL, MakeHashFromString("491209dd815ceee9de02dbbc408c06d6"), ImageInfo::FastBootPatch::Type2, 100},
     97   {"PS2, SCPH-30001R (v5.0 10/04/01 A)", ConsoleRegion::NTSC_U, MakeHashFromString("7200a03d51cacc4c14fcdfdbc4898431"), ImageInfo::FastBootPatch::Type2, 100},
     98   {"PS2, SCPH-30002R/SCPH-30003R/SCPH-30004R (v5.0 10/04/01 E)", ConsoleRegion::PAL, MakeHashFromString("8359638e857c8bc18c3c18ac17d9cc3c"), ImageInfo::FastBootPatch::Type2, 100},
     99   {"PS2, SCPH-30005R/SCPH-30006R/SCPH-30007R (v5.0 07/30/01 J)", ConsoleRegion::NTSC_J, MakeHashFromString("352d2ff9b3f68be7e6fa7e6dd8389346"), ImageInfo::FastBootPatch::Type2, 100},
    100   {"PS2, SCPH-39001 (v5.0 02/07/02 A)", ConsoleRegion::NTSC_U, MakeHashFromString("d5ce2c7d119f563ce04bc04dbc3a323e"), ImageInfo::FastBootPatch::Type2, 100},
    101   {"PS2, SCPH-39002/SCPH-39003/SCPH-39004 (v5.0 03/19/02 E)", ConsoleRegion::PAL, MakeHashFromString("0d2228e6fd4fb639c9c39d077a9ec10c"), ImageInfo::FastBootPatch::Type2, 100},
    102   {"PS2, SCPH-37000/SCPH-39000 (v5.0 04/26/02 J)", ConsoleRegion::NTSC_J, MakeHashFromString("72da56fccb8fcd77bba16d1b6f479914"), ImageInfo::FastBootPatch::Type2, 100},
    103   {"PS2, SCPH-39008 (v5.0 04/26/02 E)", ConsoleRegion::PAL, MakeHashFromString("5b1f47fbeb277c6be2fccdd6344ff2fd"), ImageInfo::FastBootPatch::Type2, 150},
    104   {"PS2, SCPH-39005/SCPH-39006/SCPH-39007 (v5.0 04/26/02 J)", ConsoleRegion::NTSC_J, MakeHashFromString("315a4003535dfda689752cb25f24785c"), ImageInfo::FastBootPatch::Type2, 100},
    105   {"PS2, DTL-H50000 (v5.0 02/06/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("54ecde087258557e2ddb5c3ddb004028"), ImageInfo::FastBootPatch::Type2, 100},
    106   {"PS2, SCPH-50000/SCPH-55000 (v5.0 02/06/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("312ad4816c232a9606e56f946bc0678a"), ImageInfo::FastBootPatch::Type2, 100},
    107   {"PS2, DTL-H50002 (v5.0 02/27/03 E)", ConsoleRegion::PAL, MakeHashFromString("666018ffec65c5c7e04796081295c6c7"), ImageInfo::FastBootPatch::Type2, 150},
    108   {"PS2, SCPH-50002/SCPH-50003/SCPH-50004 (v5.0 02/27/03 E)", ConsoleRegion::PAL, MakeHashFromString("6e69920fa6eef8522a1d688a11e41bc6"), ImageInfo::FastBootPatch::Type2, 100},
    109   {"PS2, DTL-H50001 (v5.0 03/25/03 A)", ConsoleRegion::NTSC_U, MakeHashFromString("eb960de68f0c0f7f9fa083e9f79d0360"), ImageInfo::FastBootPatch::Type2, 100},
    110   {"PS2, SCPH-50001 (v5.0 03/25/03 A)", ConsoleRegion::NTSC_U, MakeHashFromString("8aa12ce243210128c5074552d3b86251"), ImageInfo::FastBootPatch::Type2, 100},
    111   {"PS2, DTL-H50009 (v5.0 02/24/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("240d4c5ddd4b54069bdc4a3cd2faf99d"), ImageInfo::FastBootPatch::Type2, 100},
    112   {"PS2, DESR-5000/DESR-5100/DESR-7000/DESR-7100 (v5.0 10/28/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("1c6cd089e6c83da618fbf2a081eb4888"), ImageInfo::FastBootPatch::Type2, 100},
    113   {"PS2, SCPH-55000 (v5.0 06/23/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("463d87789c555a4a7604e97d7db545d1"), ImageInfo::FastBootPatch::Type2, 100},
    114   {"PS2, DTL-H50001 (v5.0 06/23/03 A)", ConsoleRegion::NTSC_U, MakeHashFromString("ab9d49ad40ae49f19856ad187777b1b3"), ImageInfo::FastBootPatch::Type2, 100},
    115   {"PS2, SCPH-50001/SCPH-50010 (v5.0 06/23/03 A)", ConsoleRegion::NTSC_U, MakeHashFromString("35461cecaa51712b300b2d6798825048"), ImageInfo::FastBootPatch::Type2, 100},
    116   {"PS2, SCPH-50002/SCPH-50003/SCPH-50004 (v5.0 06/23/03 E)", ConsoleRegion::PAL, MakeHashFromString("bd6415094e1ce9e05daabe85de807666"), ImageInfo::FastBootPatch::Type2, 100},
    117   {"PS2, SCPH-50006/SCPH-50007 (v5.0 06/23/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("2e70ad008d4ec8549aada8002fdf42fb"), ImageInfo::FastBootPatch::Type2, 100},
    118   {"PS2, SCPH-50005 (v5.0 06/23/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("50d5b97b57d8c9b6534adcb46c2027d4"), ImageInfo::FastBootPatch::Type2, 100},
    119   {"PS2, SCPH-50008 (v5.0 06/23/03 E)", ConsoleRegion::PAL, MakeHashFromString("b53d51edc7fc086685e31b811dc32aad"), ImageInfo::FastBootPatch::Type2, 150},
    120   {"PS2, SCPH-50009 (v5.0 06/23/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("1b6e631b536247756287b916f9396872"), ImageInfo::FastBootPatch::Type2, 100},
    121   {"PS2, SCPH-50000 (v5.0 08/22/03 J)", ConsoleRegion::NTSC_J, MakeHashFromString("00da1b177096cfd2532c8fa22b43e667"), ImageInfo::FastBootPatch::Type2, 100},
    122   {"PS2, SCPH-50004 (v5.0 08/22/03 E)", ConsoleRegion::PAL, MakeHashFromString("afde410bd026c16be605a1ae4bd651fd"), ImageInfo::FastBootPatch::Type2, 150},
    123   {"PS2, SCPH-50011 (v5.0 03/29/04 A)", ConsoleRegion::NTSC_U, MakeHashFromString("81f4336c1de607dd0865011c0447052e"), ImageInfo::FastBootPatch::Type2, 100},
    124   {"PS2, SCPH-70000 (v5.0 06/14/04 J)", ConsoleRegion::NTSC_J, MakeHashFromString("0eee5d1c779aa50e94edd168b4ebf42e"), ImageInfo::FastBootPatch::Type2, 100},
    125   {"PS2, SCPH-70001/SCPH-70011/SCPH-70012 (v5.0 06/14/04 A)", ConsoleRegion::NTSC_U, MakeHashFromString("d333558cc14561c1fdc334c75d5f37b7"), ImageInfo::FastBootPatch::Type2, 100},
    126   {"PS2, SCPH-70002/SCPH-70003/SCPH-70004/SCPH-70008 (v5.0 06/14/04 E)", ConsoleRegion::PAL, MakeHashFromString("dc752f160044f2ed5fc1f4964db2a095"), ImageInfo::FastBootPatch::Type2, 100},
    127   {"PS2, SCPH-70002 (v5.0 06/14/04 E)", ConsoleRegion::PAL, MakeHashFromString("7ebb4fc5eab6f79a27d76ac9aad392b2"), ImageInfo::FastBootPatch::Type2, 150},
    128   {"PS2, DTL-H70002 (v5.0 06/14/04 E)", ConsoleRegion::PAL, MakeHashFromString("63ead1d74893bf7f36880af81f68a82d"), ImageInfo::FastBootPatch::Type2, 150},
    129   {"PS2, SCPH-70005/SCPH-70006/SCPH-70007 (v5.0 06/14/04 J)", ConsoleRegion::NTSC_J, MakeHashFromString("3e3e030c0f600442fa05b94f87a1e238"), ImageInfo::FastBootPatch::Type2, 100},
    130   {"PS2, DESR-5500/DESR-5700/DESR-7500/DESR-7700 (v5.0 09/17/04 J)", ConsoleRegion::NTSC_J, MakeHashFromString("1ad977bb539fc9448a08ab276a836bbc"), ImageInfo::FastBootPatch::Type2, 100},
    131   {"PS2, DTL-H75000 (v5.0 06/20/05 J)", ConsoleRegion::NTSC_J, MakeHashFromString("bf0078ba5e19d57eae18047407f3b6e5"), ImageInfo::FastBootPatch::Type2, 100},
    132   {"PS2, SCPH-75000 (v5.0 06/20/05 J)", ConsoleRegion::NTSC_J, MakeHashFromString("eb4f40fcf4911ede39c1bbfe91e7a89a"), ImageInfo::FastBootPatch::Type2, 100},
    133   {"PS2, DTL-H75000A (v5.0 06/20/05 A)", ConsoleRegion::NTSC_U, MakeHashFromString("9959ad7a8685cad66206e7752ca23f8b"), ImageInfo::FastBootPatch::Type2, 100},
    134   {"PS2, SCPH-75001/SCPH-75010 (v5.0 06/20/05 A)", ConsoleRegion::NTSC_U, MakeHashFromString("929a14baca1776b00869f983aa6e14d2"), ImageInfo::FastBootPatch::Type2, 100},
    135   {"PS2, SCPH-75002/SCPH-75003/SCPH-75004/SCPH-75008 (v5.0 06/20/05 E)", ConsoleRegion::PAL, MakeHashFromString("573f7d4a430c32b3cc0fd0c41e104bbd"), ImageInfo::FastBootPatch::Type2, 100},
    136   {"PS2, SCPH-75006 (v5.0 06/20/05 J)", ConsoleRegion::NTSC_J, MakeHashFromString("df63a604e8bff5b0599bd1a6c2721bd0"), ImageInfo::FastBootPatch::Type2, 100},
    137   {"PS2, SCPH-77000 (v5.0 02/10/06 J)", ConsoleRegion::NTSC_J, MakeHashFromString("5b1ba4bb914406fae75ab8e38901684d"), ImageInfo::FastBootPatch::Type2, 100},
    138   {"PS2, SCPH-77001/SCPH-77010 (v5.0 02/10/06 A)", ConsoleRegion::NTSC_U, MakeHashFromString("cb801b7920a7d536ba07b6534d2433ca"), ImageInfo::FastBootPatch::Type2, 100},
    139   {"PS2, SCPH-77002/SCPH-77003/SCPH-77004/SCPH-77008 (v5.0 02/10/06 E)", ConsoleRegion::PAL, MakeHashFromString("af60e6d1a939019d55e5b330d24b1c25"), ImageInfo::FastBootPatch::Type2, 100},
    140   {"PS2, SCPH-77006/SCPH-77007 (v5.0 02/10/06 J)", ConsoleRegion::NTSC_J, MakeHashFromString("549a66d0c698635ca9fa3ab012da7129"), ImageInfo::FastBootPatch::Type2, 100},
    141   {"PS2, DTL-H90000 (v5.0 09/05/06 J)", ConsoleRegion::NTSC_J, MakeHashFromString("5e2014472c88f74f7547d8c2c60eca45"), ImageInfo::FastBootPatch::Type2, 100},
    142   {"PS2, SCPH-79000/SCPH-90000 (v5.0 09/05/06 J)", ConsoleRegion::NTSC_J, MakeHashFromString("5de9d0d730ff1e7ad122806335332524"), ImageInfo::FastBootPatch::Type2, 100},
    143   {"PS2, DTL-H90000 (v5.0 09/05/06 A)", ConsoleRegion::NTSC_U, MakeHashFromString("21fe4cad111f7dc0f9af29477057f88d"), ImageInfo::FastBootPatch::Type2, 100},
    144   {"PS2, SCPH-79001/SCPH-79010/SCPH-90001 (v5.0 09/05/06 A)", ConsoleRegion::NTSC_U, MakeHashFromString("40c11c063b3b9409aa5e4058e984e30c"), ImageInfo::FastBootPatch::Type2, 100},
    145   {"PS2, SCPH-79002/SCPH-79003/SCPH-79004/SCPH-79008/SCPH-90002/SCPH-90003/SCPH-90004 (v5.0 09/05/06 E)", ConsoleRegion::PAL, MakeHashFromString("80bbb237a6af9c611df43b16b930b683"), ImageInfo::FastBootPatch::Type2, 100},
    146   {"PS2, SCPH-79006/SCPH-79007/SCPH-90006/SCPH-90007 (v5.0 09/05/06 J)", ConsoleRegion::NTSC_J, MakeHashFromString("c37bce95d32b2be480f87dd32704e664"), ImageInfo::FastBootPatch::Type2, 100},
    147   {"PS2, SCPH-90000 (v5.0 02/20/08 J)", ConsoleRegion::NTSC_J, MakeHashFromString("80ac46fa7e77b8ab4366e86948e54f83"), ImageInfo::FastBootPatch::Type2, 100},
    148   {"PS2, SCPH-90001/SCPH-90010 (v5.0 02/20/08 A)", ConsoleRegion::NTSC_U, MakeHashFromString("21038400dc633070a78ad53090c53017"), ImageInfo::FastBootPatch::Type2, 100 },
    149   {"PS2, SCPH-90002/SCPH-90003/SCPH-90004/SCPH-90008 (v5.0 02/20/08 E)", ConsoleRegion::PAL, MakeHashFromString("dc69f0643a3030aaa4797501b483d6c4"), ImageInfo::FastBootPatch::Type2, 100 },
    150   {"PS2, SCPH-90005/SCPH-90006/SCPH-90007 (v5.0 02/20/08 J)", ConsoleRegion::NTSC_J, MakeHashFromString("30d56e79d89fbddf10938fa67fe3f34e"), ImageInfo::FastBootPatch::Type2, 100 },
    151   {"PS2, KDL-22PX300 (v5.0 04/15/10 E)", ConsoleRegion::PAL, MakeHashFromString("93ea3bcee4252627919175ff1b16a1d9"), ImageInfo::FastBootPatch::Type2, 150},
    152 };
    153 // clang-format on
    154 
    155 // OpenBIOS is separate, because there's no fixed hash for it. So just in case something collides with a hash of zero...
    156 // which would be unlikely.
    157 static constexpr const ImageInfo s_openbios_info = {
    158   "OpenBIOS", ConsoleRegion::Auto, {}, ImageInfo::FastBootPatch::Unsupported, 200};
    159 static constexpr const char s_openbios_signature[] = {'O', 'p', 'e', 'n', 'B', 'I', 'O', 'S'};
    160 static constexpr u32 s_openbios_signature_offset = 0x78;
    161 
    162 } // namespace BIOS
    163 
    164 TinyString BIOS::ImageInfo::GetHashString(const BIOS::ImageInfo::Hash& hash)
    165 {
    166   return TinyString::from_format(
    167     "{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}", hash[0],
    168     hash[1], hash[2], hash[3], hash[4], hash[5], hash[6], hash[7], hash[8], hash[9], hash[10], hash[11], hash[12],
    169     hash[13], hash[14], hash[15]);
    170 }
    171 
    172 std::optional<BIOS::Image> BIOS::LoadImageFromFile(const char* filename, Error* error)
    173 {
    174   std::optional<BIOS::Image> ret;
    175 
    176   auto fp = FileSystem::OpenManagedCFile(filename, "rb", error);
    177   if (!fp)
    178   {
    179     Error::AddPrefixFmt(error, "Failed to open BIOS '{}': ", Path::GetFileName(filename));
    180     return ret;
    181   }
    182 
    183   const u64 size = static_cast<u64>(FileSystem::FSize64(fp.get()));
    184   if (size != BIOS_SIZE && size != BIOS_SIZE_PS2 && size != BIOS_SIZE_PS3)
    185   {
    186     Error::SetStringFmt(error, "BIOS image '{}' size mismatch, expecting either {} or {} bytes but got {} bytes",
    187                         Path::GetFileName(filename), static_cast<unsigned>(BIOS_SIZE),
    188                         static_cast<unsigned>(BIOS_SIZE_PS2), size);
    189     return ret;
    190   }
    191 
    192   // We want to hash the whole file. That means reading the whole thing in, if it's a larger BIOS (PS2).
    193   std::optional<DynamicHeapArray<u8>> data = FileSystem::ReadBinaryFile(fp.get(), error);
    194   if (!data.has_value() || data->size() < BIOS_SIZE)
    195     return ret;
    196 
    197   ret = BIOS::Image();
    198   ret->hash = MD5Digest::HashData(data.value());
    199 
    200   // But only copy the first 512KB, since that's all that's mapped.
    201   ret->data = std::move(data.value());
    202   ret->data.resize(BIOS_SIZE);
    203   ret->info = GetInfoForHash(ret->data, ret->hash);
    204 
    205   DEV_LOG("Hash for BIOS '{}': {}", FileSystem::GetDisplayNameFromPath(filename), ImageInfo::GetHashString(ret->hash));
    206   return ret;
    207 }
    208 
    209 const BIOS::ImageInfo* BIOS::GetInfoForHash(const std::span<u8> image, const ImageInfo::Hash& hash)
    210 {
    211   // check for openbios
    212   if (image.size() >= (s_openbios_signature_offset + std::size(s_openbios_signature)) &&
    213       std::memcmp(&image[s_openbios_signature_offset], s_openbios_signature, std::size(s_openbios_signature)) == 0)
    214   {
    215     return &s_openbios_info;
    216   }
    217 
    218   for (const ImageInfo& ii : s_image_info_by_hash)
    219   {
    220     if (ii.hash == hash)
    221       return &ii;
    222   }
    223 
    224   WARNING_LOG("Unknown BIOS hash: {}", ImageInfo::GetHashString(hash));
    225   return nullptr;
    226 }
    227 
    228 bool BIOS::IsValidBIOSForRegion(ConsoleRegion console_region, ConsoleRegion bios_region)
    229 {
    230   return (console_region == ConsoleRegion::Auto || bios_region == ConsoleRegion::Auto || bios_region == console_region);
    231 }
    232 
    233 bool BIOS::PatchBIOSFastBoot(u8* image, u32 image_size, ImageInfo::FastBootPatch type)
    234 {
    235   // Replace the shell entry point with a return back to the bootstrap.
    236   static constexpr const u32 shell_replacement[] = {
    237     // lui at, 1f80
    238     // lui t2, 0300h
    239     // sw t2, 1814h(at) ; turn the display on
    240     // jr ra
    241     // nop
    242     Mips::Encoder::lui(Mips::Encoder::Reg::AT, 0x1F80),
    243     Mips::Encoder::lui(Mips::Encoder::Reg::T2, 0x0300),
    244     Mips::Encoder::sw(Mips::Encoder::Reg::T2, 0x1814, Mips::Encoder::Reg::AT),
    245     Mips::Encoder::jr(Mips::Encoder::Reg::RA),
    246     Mips::Encoder::nop(),
    247   };
    248 
    249   // Type1/Type2 use the same shell replacement patch, but for historical reasons we replace the actual shell code for
    250   // Type 1, and the routine that calls the decompressor for Part 2.
    251   u32 patch_offset;
    252   if (type == ImageInfo::FastBootPatch::Type1)
    253   {
    254     patch_offset = 0x18000;
    255     INFO_LOG("Using Type 1 fast boot patch at offset 0x{:08X}.", patch_offset);
    256   }
    257   else if (type == ImageInfo::FastBootPatch::Type2)
    258   {
    259     static constexpr const char* search_pattern = "d8 ff bd 27"  // add sp, sp, -28
    260                                                   "1c 00 bf af"  // sw ra, 0xc(sp)
    261                                                   "28 00 a4 af"  // sw a0, 0x28(sp)
    262                                                   "?? ?? 06 3c"  // lui a2, 0xbfc6
    263                                                   "?? ?? c6 24"  // addiu a2, -0x6bb8
    264                                                   "c0 bf 04 3c"  // lui a0, 0xbfc0
    265                                                   "?? ?? ?? 0f"; // jal 0xbfc58720
    266     constexpr u32 FALLBACK_OFFSET = 0x00052AFC;
    267     const std::optional<size_t> offset =
    268       StringUtil::BytePatternSearch(std::span<const u8>(image, image_size), search_pattern);
    269     if (offset.has_value())
    270     {
    271       patch_offset = static_cast<u32>(offset.value());
    272       VERBOSE_LOG("Found Type 2 pattern at offset 0x{:08X}", patch_offset);
    273     }
    274     else
    275     {
    276       patch_offset = FALLBACK_OFFSET;
    277       WARNING_LOG("Failed to find Type 2 pattern in BIOS image. Using fallback offset of 0x{:08X}", patch_offset);
    278     }
    279   }
    280   else [[unlikely]]
    281   {
    282     return false;
    283   }
    284 
    285   Assert((patch_offset + sizeof(shell_replacement)) <= image_size);
    286   std::memcpy(image + patch_offset, shell_replacement, sizeof(shell_replacement));
    287   return true;
    288 }
    289 
    290 bool BIOS::IsValidPSExeHeader(const PSEXEHeader& header, size_t file_size)
    291 {
    292   static constexpr char expected_id[] = {'P', 'S', '-', 'X', ' ', 'E', 'X', 'E'};
    293   if (file_size < sizeof(expected_id) || std::memcmp(header.id, expected_id, sizeof(expected_id)) != 0)
    294     return false;
    295 
    296   if ((header.file_size + sizeof(PSEXEHeader)) > file_size)
    297   {
    298     WARNING_LOG("Incorrect file size in PS-EXE header: {} bytes should not be greater than {} bytes", header.file_size,
    299                 file_size - sizeof(PSEXEHeader));
    300   }
    301 
    302   return true;
    303 }
    304 
    305 DiscRegion BIOS::GetPSExeDiscRegion(const PSEXEHeader& header)
    306 {
    307   static constexpr char ntsc_u_id[] = "Sony Computer Entertainment Inc. for North America area";
    308   static constexpr char ntsc_j_id[] = "Sony Computer Entertainment Inc. for Japan area";
    309   static constexpr char pal_id[] = "Sony Computer Entertainment Inc. for Europe area";
    310 
    311   if (std::memcmp(header.marker, ntsc_u_id, sizeof(ntsc_u_id) - 1) == 0)
    312     return DiscRegion::NTSC_U;
    313   else if (std::memcmp(header.marker, ntsc_j_id, sizeof(ntsc_j_id) - 1) == 0)
    314     return DiscRegion::NTSC_J;
    315   else if (std::memcmp(header.marker, pal_id, sizeof(pal_id) - 1) == 0)
    316     return DiscRegion::PAL;
    317   else
    318     return DiscRegion::Other;
    319 }
    320 
    321 std::optional<BIOS::Image> BIOS::GetBIOSImage(ConsoleRegion region, Error* error)
    322 {
    323   std::string bios_name;
    324   switch (region)
    325   {
    326     case ConsoleRegion::NTSC_J:
    327       bios_name = Host::GetStringSettingValue("BIOS", "PathNTSCJ", "");
    328       break;
    329 
    330     case ConsoleRegion::PAL:
    331       bios_name = Host::GetStringSettingValue("BIOS", "PathPAL", "");
    332       break;
    333 
    334     case ConsoleRegion::NTSC_U:
    335     default:
    336       bios_name = Host::GetStringSettingValue("BIOS", "PathNTSCU", "");
    337       break;
    338   }
    339 
    340   std::optional<Image> image;
    341 
    342   if (bios_name.empty())
    343   {
    344     // auto-detect
    345     image = FindBIOSImageInDirectory(region, EmuFolders::Bios.c_str(), error);
    346   }
    347   else
    348   {
    349     // try the configured path
    350     image = LoadImageFromFile(Path::Combine(EmuFolders::Bios, bios_name).c_str(), error);
    351   }
    352 
    353   // verify region
    354   if (image.has_value() && (!image->info || !IsValidBIOSForRegion(region, image->info->region)))
    355   {
    356     WARNING_LOG("BIOS region {} does not match requested region {}. This may cause issues.",
    357                 image->info ? Settings::GetConsoleRegionName(image->info->region) : "UNKNOWN",
    358                 Settings::GetConsoleRegionName(region));
    359   }
    360 
    361   return image;
    362 }
    363 
    364 std::optional<BIOS::Image> BIOS::FindBIOSImageInDirectory(ConsoleRegion region, const char* directory, Error* error)
    365 {
    366   INFO_LOG("Searching for a {} BIOS in '{}'...", Settings::GetConsoleRegionName(region), directory);
    367 
    368   FileSystem::FindResultsArray results;
    369   FileSystem::FindFiles(
    370     directory, "*", FILESYSTEM_FIND_FILES | FILESYSTEM_FIND_HIDDEN_FILES | FILESYSTEM_FIND_RELATIVE_PATHS, &results);
    371 
    372   std::optional<Image> image;
    373   std::string image_path;
    374   bool image_region_match = false;
    375 
    376   for (const FILESYSTEM_FIND_DATA& fd : results)
    377   {
    378     if (fd.Size != BIOS_SIZE && fd.Size != BIOS_SIZE_PS2 && fd.Size != BIOS_SIZE_PS3)
    379     {
    380       WARNING_LOG("Skipping '{}': incorrect size", fd.FileName.c_str());
    381       continue;
    382     }
    383 
    384     std::string full_path(Path::Combine(directory, fd.FileName));
    385     std::optional<Image> found_image = LoadImageFromFile(full_path.c_str(), nullptr);
    386     if (!found_image.has_value())
    387       continue;
    388 
    389     // don't let an unknown bios take precedence over a known one
    390     const bool region_match = (found_image->info && IsValidBIOSForRegion(region, found_image->info->region));
    391     if (image.has_value() &&
    392         ((image->info && !found_image->info) || (image_region_match && !region_match) ||
    393          (image->info && found_image->info && image->info->priority < found_image->info->priority)))
    394     {
    395       continue;
    396     }
    397 
    398     image = std::move(found_image);
    399     image_path = std::move(full_path);
    400     image_region_match = region_match;
    401   }
    402 
    403   if (!image.has_value())
    404   {
    405 #ifndef __ANDROID__
    406     Error::SetStringFmt(
    407       error,
    408       TRANSLATE_FS("System", "No BIOS image found for {} region.\n\nDuckStation requires a PS1 or PS2 BIOS in order to "
    409                              "run.\n\nFor legal reasons, you *must* obtain a BIOS from an actual PS1 unit that you own "
    410                              "(borrowing doesn't count).\n\nOnce dumped, this BIOS image should be placed in the bios "
    411                              "folder within the data directory (Tools Menu -> Open Data Directory)."),
    412       Settings::GetConsoleRegionName(region));
    413 #else
    414     Error::SetStringFmt(error, TRANSLATE_FS("System", "No BIOS image found for {} region."),
    415                         Settings::GetConsoleRegionName(region));
    416 #endif
    417     return image;
    418   }
    419 
    420   if (!image->info)
    421     WARNING_LOG("Using unknown BIOS '{}'. This may crash.", Path::GetFileName(image_path));
    422 
    423   return image;
    424 }
    425 
    426 std::vector<std::pair<std::string, const BIOS::ImageInfo*>> BIOS::FindBIOSImagesInDirectory(const char* directory)
    427 {
    428   std::vector<std::pair<std::string, const ImageInfo*>> results;
    429 
    430   FileSystem::FindResultsArray files;
    431   FileSystem::FindFiles(directory, "*",
    432                         FILESYSTEM_FIND_FILES | FILESYSTEM_FIND_HIDDEN_FILES | FILESYSTEM_FIND_RELATIVE_PATHS, &files);
    433 
    434   for (FILESYSTEM_FIND_DATA& fd : files)
    435   {
    436     if (fd.Size != BIOS_SIZE && fd.Size != BIOS_SIZE_PS2 && fd.Size != BIOS_SIZE_PS3)
    437       continue;
    438 
    439     std::string full_path(Path::Combine(directory, fd.FileName));
    440     std::optional<Image> found_image = LoadImageFromFile(full_path.c_str(), nullptr);
    441     if (!found_image)
    442       continue;
    443 
    444     results.emplace_back(std::move(fd.FileName), found_image->info);
    445   }
    446 
    447   return results;
    448 }
    449 
    450 bool BIOS::HasAnyBIOSImages()
    451 {
    452   return FindBIOSImageInDirectory(ConsoleRegion::Auto, EmuFolders::Bios.c_str(), nullptr).has_value();
    453 }