^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * fs/partitions/mac.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Code extracted from drivers/block/genhd.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1991-1998 Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Re-organised Feb 1998 Russell King
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "check.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "mac.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #ifdef CONFIG_PPC_PMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/machdep.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) extern void note_bootable_part(dev_t dev, int part, int goodness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Code to understand MacOS partition tables.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static inline void mac_fix_string(char *stg, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) for (i = len - 1; i >= 0 && stg[i] == ' '; i--)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) stg[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) int mac_partition(struct parsed_partitions *state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) Sector sect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) unsigned char *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) int slot, blocks_in_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) unsigned secsize, datasize, partoffset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #ifdef CONFIG_PPC_PMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) int found_root = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) int found_root_goodness = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct mac_partition *part;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct mac_driver_desc *md;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* Get 0th block and look at the first partition map entry. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) md = read_part_sector(state, 0, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (!md)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (be16_to_cpu(md->signature) != MAC_DRIVER_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) secsize = be16_to_cpu(md->block_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) datasize = round_down(secsize, 512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) data = read_part_sector(state, datasize / 512, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) partoffset = secsize % 512;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (partoffset + sizeof(*part) > datasize)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) part = (struct mac_partition *) (data + partoffset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return 0; /* not a MacOS disk */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) blocks_in_map = be32_to_cpu(part->map_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (blocks_in_map < 0 || blocks_in_map >= DISK_MAX_PARTS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (blocks_in_map >= state->limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) blocks_in_map = state->limit - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) strlcat(state->pp_buf, " [mac]", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) for (slot = 1; slot <= blocks_in_map; ++slot) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) int pos = slot * secsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) data = read_part_sector(state, pos/512, §);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) part = (struct mac_partition *) (data + pos%512);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) if (be16_to_cpu(part->signature) != MAC_PARTITION_MAGIC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) put_partition(state, slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) be32_to_cpu(part->start_block) * (secsize/512),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) be32_to_cpu(part->block_count) * (secsize/512));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (!strncasecmp(part->type, "Linux_RAID", 10))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) state->parts[slot].flags = ADDPART_FLAG_RAID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #ifdef CONFIG_PPC_PMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * If this is the first bootable partition, tell the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * setup code, in case it wants to make this the root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) if (machine_is(powermac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int goodness = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) mac_fix_string(part->processor, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) mac_fix_string(part->name, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) mac_fix_string(part->type, 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if ((be32_to_cpu(part->status) & MAC_STATUS_BOOTABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) && strcasecmp(part->processor, "powerpc") == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goodness++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (strcasecmp(part->type, "Apple_UNIX_SVR2") == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) || (strncasecmp(part->type, "Linux", 5) == 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) && strcasecmp(part->type, "Linux_swap") != 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int i, l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) goodness++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) l = strlen(part->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (strcmp(part->name, "/") == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) goodness++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) for (i = 0; i <= l - 4; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) if (strncasecmp(part->name + i, "root",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 4) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) goodness += 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (strncasecmp(part->name, "swap", 4) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goodness--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (goodness > found_root_goodness) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) found_root = slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) found_root_goodness = goodness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #endif /* CONFIG_PPC_PMAC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) #ifdef CONFIG_PPC_PMAC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (found_root_goodness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) note_bootable_part(state->bdev->bd_dev, found_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) found_root_goodness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) put_dev_sector(sect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) strlcat(state->pp_buf, "\n", PAGE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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