architecture/powerpc64/package/linux/0035-ps3-partition.patch

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   3 #
   4 # T2 SDE: architecture/powerpc64/package/.../0035-ps3-partition.patch
   5 # Copyright (C) 2019 - 2020 The T2 SDE Project
   6 #
   7 # More information can be found in the files COPYING and README.
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   9 # This patch file is dual-licensed. It is available under the license the
  10 # patched project is licensed under, as long as it is an OpenSource license
  11 # as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
  12 # of the GNU General Public License as published by the Free Software
  13 # Foundation; either version 2 of the License, or (at your option) any later
  14 # version.
  15 # --- T2-COPYRIGHT-NOTE-END ---
  16
  17 --- a/block/partitions/Kconfig
  18 +++ b/block/partitions/Kconfig
  19 @@ -262,6 +262,12 @@ config SYSV68_PARTITION
  20           sysv68).
  21           Otherwise, say N.
  22
  23 +config PS3_PARTITION
  24 +       bool "PS3 Partition support"
  25 +       depends on PARTITION_ADVANCED
  26 +       help
  27 +         Say Y here if you would like to use PS3 hard disks under Linux.
  28 +
  29  config CMDLINE_PARTITION
  30         bool "Command line partition support" if PARTITION_ADVANCED
  31         select BLK_CMDLINE_PARSER
  32 --- a/block/partitions/Makefile
  33 +++ b/block/partitions/Makefile
  34 @@ -21,3 +21,4 @@ obj-$(CONFIG_IBM_PARTITION) += ibm.o
  35  obj-$(CONFIG_EFI_PARTITION) += efi.o
  36  obj-$(CONFIG_KARMA_PARTITION) += karma.o
  37  obj-$(CONFIG_SYSV68_PARTITION) += sysv68.o
  38 +obj-$(CONFIG_PS3_PARTITION) += ps3.o
  39 --- a/block/partitions/core.c
  40 +++ b/block/partitions/core.c
  41 @@ -11,6 +11,7 @@
  42  #include <linux/blktrace_api.h>
  43  #include <linux/raid/detect.h>
  44  #include "check.h"
  45 +#include "ps3.h"
  46
  47  static int (*check_part[])(struct parsed_partitions *) = {
  48         /*
  49 @@ -81,6 +82,9 @@ static int (*check_part[])(struct parsed_partitions *) = {
  50  #endif
  51  #ifdef CONFIG_SYSV68_PARTITION
  52         sysv68_partition,
  53 +#endif
  54 +#ifdef CONFIG_PS3_PARTITION
  55 +       ps3_partition,
  56  #endif
  57         NULL
  58  };
  59 --- /dev/null
  60 +++ b/block/partitions/ps3.c
  61 @@ -0,0 +1,98 @@
  62 +/*
  63 + *  fs/partitions/ps3.c
  64 + *
  65 + *  Copyright (C) 2012 glevand <geoffrey.levand@mail.ru>
  66 + */
  67 +
  68 +#include "check.h"
  69 +#include "ps3.h"
  70 +
  71 +#define SECTOR_SIZE            512
  72 +#define MAX_ACL_ENTRIES                8
  73 +#define MAX_PARTITIONS         8
  74 +
  75 +#define MAGIC1                 0x0FACE0FFULL
  76 +#define MAGIC2                 0xDEADFACEULL
  77 +
  78 +struct p_acl_entry {
  79 +       __be64 laid;
  80 +       __be64 rights;
  81 +};
  82 +
  83 +struct d_partition {
  84 +       __be64 p_start;
  85 +       __be64 p_size;
  86 +       struct p_acl_entry p_acl[MAX_ACL_ENTRIES];
  87 +};
  88 +
  89 +struct disklabel {
  90 +       u8 d_res1[16];
  91 +       __be64 d_magic1;
  92 +       __be64 d_magic2;
  93 +       __be64 d_res2;
  94 +       __be64 d_res3;
  95 +       struct d_partition d_partitions[MAX_PARTITIONS];
  96 +       u8 d_pad[0x600 - MAX_PARTITIONS * sizeof(struct d_partition)- 0x30];
  97 +};
  98 +
  99 +static bool ps3_read_disklabel(struct parsed_partitions *state, struct disklabel *label)
 100 +{
 101 +       Sector sect;
 102 +       unsigned char *data;
 103 +       int i;
 104 +
 105 +       for (i = 0; i < sizeof(struct disklabel) / SECTOR_SIZE; i++) {
 106 +               data = read_part_sector(state, i, &sect);
 107 +               if (!data)
 108 +                       return (false);
 109 +
 110 +               memcpy((unsigned char *) label + i * SECTOR_SIZE, data, SECTOR_SIZE);
 111 +
 112 +               put_dev_sector(sect);
 113 +       }
 114 +
 115 +       return (true);
 116 +}
 117 +
 118 +int ps3_partition(struct parsed_partitions *state)
 119 +{
 120 +       struct disklabel *label = NULL;
 121 +       int slot = 1;
 122 +       int result = -1;
 123 +       int i;
 124 +
 125 +       label = kmalloc(sizeof(struct disklabel), GFP_KERNEL);
 126 +       if (!label)
 127 +               goto out;
 128 +
 129 +       if (!ps3_read_disklabel(state, label))
 130 +               goto out;
 131 +
 132 +       result = 0;
 133 +
 134 +       if ((be64_to_cpu(label->d_magic1) != MAGIC1) ||
 135 +           (be64_to_cpu(label->d_magic2) != MAGIC2))
 136 +               goto out;
 137 +
 138 +       for (i = 0; i < MAX_PARTITIONS; i++) {
 139 +               if (label->d_partitions[i].p_start && label->d_partitions[i].p_size) {
 140 +                       put_partition(state, slot,
 141 +                               be64_to_cpu(label->d_partitions[i].p_start),
 142 +                               be64_to_cpu(label->d_partitions[i].p_size));
 143 +                       slot++;
 144 +               }
 145 +       }
 146 +
 147 +       strlcat(state->pp_buf, "\n", PAGE_SIZE);
 148 +
 149 +       kfree(label);
 150 +
 151 +       return (1);
 152 +
 153 +out:
 154 +
 155 +       if (label)
 156 +               kfree(label);
 157 +
 158 +       return (result);
 159 +}
 160 --- /dev/null
 161 +++ b/block/partitions/ps3.h
 162 @@ -0,0 +1,5 @@
 163 +/*
 164 + *  fs/partitions/ps3.h
 165 + */
 166 +
 167 +int ps3_partition(struct parsed_partitions *state);