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-rw-r--r--fs/partitions/acorn.c556
1 files changed, 0 insertions, 556 deletions
diff --git a/fs/partitions/acorn.c b/fs/partitions/acorn.c
deleted file mode 100644
index fbeb697374d..00000000000
--- a/fs/partitions/acorn.c
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * linux/fs/partitions/acorn.c
- *
- * Copyright (c) 1996-2000 Russell King.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Scan ADFS partitions on hard disk drives. Unfortunately, there
- * isn't a standard for partitioning drives on Acorn machines, so
- * every single manufacturer of SCSI and IDE cards created their own
- * method.
- */
-#include <linux/buffer_head.h>
-#include <linux/adfs_fs.h>
-
-#include "check.h"
-#include "acorn.h"
-
-/*
- * Partition types. (Oh for reusability)
- */
-#define PARTITION_RISCIX_MFM 1
-#define PARTITION_RISCIX_SCSI 2
-#define PARTITION_LINUX 9
-
-#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
- defined(CONFIG_ACORN_PARTITION_ADFS)
-static struct adfs_discrecord *
-adfs_partition(struct parsed_partitions *state, char *name, char *data,
- unsigned long first_sector, int slot)
-{
- struct adfs_discrecord *dr;
- unsigned int nr_sects;
-
- if (adfs_checkbblk(data))
- return NULL;
-
- dr = (struct adfs_discrecord *)(data + 0x1c0);
-
- if (dr->disc_size == 0 && dr->disc_size_high == 0)
- return NULL;
-
- nr_sects = (le32_to_cpu(dr->disc_size_high) << 23) |
- (le32_to_cpu(dr->disc_size) >> 9);
-
- if (name) {
- strlcat(state->pp_buf, " [", PAGE_SIZE);
- strlcat(state->pp_buf, name, PAGE_SIZE);
- strlcat(state->pp_buf, "]", PAGE_SIZE);
- }
- put_partition(state, slot, first_sector, nr_sects);
- return dr;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_RISCIX
-
-struct riscix_part {
- __le32 start;
- __le32 length;
- __le32 one;
- char name[16];
-};
-
-struct riscix_record {
- __le32 magic;
-#define RISCIX_MAGIC cpu_to_le32(0x4a657320)
- __le32 date;
- struct riscix_part part[8];
-};
-
-#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
- defined(CONFIG_ACORN_PARTITION_ADFS)
-static int riscix_partition(struct parsed_partitions *state,
- unsigned long first_sect, int slot,
- unsigned long nr_sects)
-{
- Sector sect;
- struct riscix_record *rr;
-
- rr = read_part_sector(state, first_sect, &sect);
- if (!rr)
- return -1;
-
- strlcat(state->pp_buf, " [RISCiX]", PAGE_SIZE);
-
-
- if (rr->magic == RISCIX_MAGIC) {
- unsigned long size = nr_sects > 2 ? 2 : nr_sects;
- int part;
-
- strlcat(state->pp_buf, " <", PAGE_SIZE);
-
- put_partition(state, slot++, first_sect, size);
- for (part = 0; part < 8; part++) {
- if (rr->part[part].one &&
- memcmp(rr->part[part].name, "All\0", 4)) {
- put_partition(state, slot++,
- le32_to_cpu(rr->part[part].start),
- le32_to_cpu(rr->part[part].length));
- strlcat(state->pp_buf, "(", PAGE_SIZE);
- strlcat(state->pp_buf, rr->part[part].name, PAGE_SIZE);
- strlcat(state->pp_buf, ")", PAGE_SIZE);
- }
- }
-
- strlcat(state->pp_buf, " >\n", PAGE_SIZE);
- } else {
- put_partition(state, slot++, first_sect, nr_sects);
- }
-
- put_dev_sector(sect);
- return slot;
-}
-#endif
-#endif
-
-#define LINUX_NATIVE_MAGIC 0xdeafa1de
-#define LINUX_SWAP_MAGIC 0xdeafab1e
-
-struct linux_part {
- __le32 magic;
- __le32 start_sect;
- __le32 nr_sects;
-};
-
-#if defined(CONFIG_ACORN_PARTITION_CUMANA) || \
- defined(CONFIG_ACORN_PARTITION_ADFS)
-static int linux_partition(struct parsed_partitions *state,
- unsigned long first_sect, int slot,
- unsigned long nr_sects)
-{
- Sector sect;
- struct linux_part *linuxp;
- unsigned long size = nr_sects > 2 ? 2 : nr_sects;
-
- strlcat(state->pp_buf, " [Linux]", PAGE_SIZE);
-
- put_partition(state, slot++, first_sect, size);
-
- linuxp = read_part_sector(state, first_sect, &sect);
- if (!linuxp)
- return -1;
-
- strlcat(state->pp_buf, " <", PAGE_SIZE);
- while (linuxp->magic == cpu_to_le32(LINUX_NATIVE_MAGIC) ||
- linuxp->magic == cpu_to_le32(LINUX_SWAP_MAGIC)) {
- if (slot == state->limit)
- break;
- put_partition(state, slot++, first_sect +
- le32_to_cpu(linuxp->start_sect),
- le32_to_cpu(linuxp->nr_sects));
- linuxp ++;
- }
- strlcat(state->pp_buf, " >", PAGE_SIZE);
-
- put_dev_sector(sect);
- return slot;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_CUMANA
-int adfspart_check_CUMANA(struct parsed_partitions *state)
-{
- unsigned long first_sector = 0;
- unsigned int start_blk = 0;
- Sector sect;
- unsigned char *data;
- char *name = "CUMANA/ADFS";
- int first = 1;
- int slot = 1;
-
- /*
- * Try Cumana style partitions - sector 6 contains ADFS boot block
- * with pointer to next 'drive'.
- *
- * There are unknowns in this code - is the 'cylinder number' of the
- * next partition relative to the start of this one - I'm assuming
- * it is.
- *
- * Also, which ID did Cumana use?
- *
- * This is totally unfinished, and will require more work to get it
- * going. Hence it is totally untested.
- */
- do {
- struct adfs_discrecord *dr;
- unsigned int nr_sects;
-
- data = read_part_sector(state, start_blk * 2 + 6, &sect);
- if (!data)
- return -1;
-
- if (slot == state->limit)
- break;
-
- dr = adfs_partition(state, name, data, first_sector, slot++);
- if (!dr)
- break;
-
- name = NULL;
-
- nr_sects = (data[0x1fd] + (data[0x1fe] << 8)) *
- (dr->heads + (dr->lowsector & 0x40 ? 1 : 0)) *
- dr->secspertrack;
-
- if (!nr_sects)
- break;
-
- first = 0;
- first_sector += nr_sects;
- start_blk += nr_sects >> (BLOCK_SIZE_BITS - 9);
- nr_sects = 0; /* hmm - should be partition size */
-
- switch (data[0x1fc] & 15) {
- case 0: /* No partition / ADFS? */
- break;
-
-#ifdef CONFIG_ACORN_PARTITION_RISCIX
- case PARTITION_RISCIX_SCSI:
- /* RISCiX - we don't know how to find the next one. */
- slot = riscix_partition(state, first_sector, slot,
- nr_sects);
- break;
-#endif
-
- case PARTITION_LINUX:
- slot = linux_partition(state, first_sector, slot,
- nr_sects);
- break;
- }
- put_dev_sector(sect);
- if (slot == -1)
- return -1;
- } while (1);
- put_dev_sector(sect);
- return first ? 0 : 1;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_ADFS
-/*
- * Purpose: allocate ADFS partitions.
- *
- * Params : hd - pointer to gendisk structure to store partition info.
- * dev - device number to access.
- *
- * Returns: -1 on error, 0 for no ADFS boot sector, 1 for ok.
- *
- * Alloc : hda = whole drive
- * hda1 = ADFS partition on first drive.
- * hda2 = non-ADFS partition.
- */
-int adfspart_check_ADFS(struct parsed_partitions *state)
-{
- unsigned long start_sect, nr_sects, sectscyl, heads;
- Sector sect;
- unsigned char *data;
- struct adfs_discrecord *dr;
- unsigned char id;
- int slot = 1;
-
- data = read_part_sector(state, 6, &sect);
- if (!data)
- return -1;
-
- dr = adfs_partition(state, "ADFS", data, 0, slot++);
- if (!dr) {
- put_dev_sector(sect);
- return 0;
- }
-
- heads = dr->heads + ((dr->lowsector >> 6) & 1);
- sectscyl = dr->secspertrack * heads;
- start_sect = ((data[0x1fe] << 8) + data[0x1fd]) * sectscyl;
- id = data[0x1fc] & 15;
- put_dev_sector(sect);
-
- /*
- * Work out start of non-adfs partition.
- */
- nr_sects = (state->bdev->bd_inode->i_size >> 9) - start_sect;
-
- if (start_sect) {
- switch (id) {
-#ifdef CONFIG_ACORN_PARTITION_RISCIX
- case PARTITION_RISCIX_SCSI:
- case PARTITION_RISCIX_MFM:
- slot = riscix_partition(state, start_sect, slot,
- nr_sects);
- break;
-#endif
-
- case PARTITION_LINUX:
- slot = linux_partition(state, start_sect, slot,
- nr_sects);
- break;
- }
- }
- strlcat(state->pp_buf, "\n", PAGE_SIZE);
- return 1;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_ICS
-
-struct ics_part {
- __le32 start;
- __le32 size;
-};
-
-static int adfspart_check_ICSLinux(struct parsed_partitions *state,
- unsigned long block)
-{
- Sector sect;
- unsigned char *data = read_part_sector(state, block, &sect);
- int result = 0;
-
- if (data) {
- if (memcmp(data, "LinuxPart", 9) == 0)
- result = 1;
- put_dev_sector(sect);
- }
-
- return result;
-}
-
-/*
- * Check for a valid ICS partition using the checksum.
- */
-static inline int valid_ics_sector(const unsigned char *data)
-{
- unsigned long sum;
- int i;
-
- for (i = 0, sum = 0x50617274; i < 508; i++)
- sum += data[i];
-
- sum -= le32_to_cpu(*(__le32 *)(&data[508]));
-
- return sum == 0;
-}
-
-/*
- * Purpose: allocate ICS partitions.
- * Params : hd - pointer to gendisk structure to store partition info.
- * dev - device number to access.
- * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
- * Alloc : hda = whole drive
- * hda1 = ADFS partition 0 on first drive.
- * hda2 = ADFS partition 1 on first drive.
- * ..etc..
- */
-int adfspart_check_ICS(struct parsed_partitions *state)
-{
- const unsigned char *data;
- const struct ics_part *p;
- int slot;
- Sector sect;
-
- /*
- * Try ICS style partitions - sector 0 contains partition info.
- */
- data = read_part_sector(state, 0, &sect);
- if (!data)
- return -1;
-
- if (!valid_ics_sector(data)) {
- put_dev_sector(sect);
- return 0;
- }
-
- strlcat(state->pp_buf, " [ICS]", PAGE_SIZE);
-
- for (slot = 1, p = (const struct ics_part *)data; p->size; p++) {
- u32 start = le32_to_cpu(p->start);
- s32 size = le32_to_cpu(p->size); /* yes, it's signed. */
-
- if (slot == state->limit)
- break;
-
- /*
- * Negative sizes tell the RISC OS ICS driver to ignore
- * this partition - in effect it says that this does not
- * contain an ADFS filesystem.
- */
- if (size < 0) {
- size = -size;
-
- /*
- * Our own extension - We use the first sector
- * of the partition to identify what type this
- * partition is. We must not make this visible
- * to the filesystem.
- */
- if (size > 1 && adfspart_check_ICSLinux(state, start)) {
- start += 1;
- size -= 1;
- }
- }
-
- if (size)
- put_partition(state, slot++, start, size);
- }
-
- put_dev_sector(sect);
- strlcat(state->pp_buf, "\n", PAGE_SIZE);
- return 1;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_POWERTEC
-struct ptec_part {
- __le32 unused1;
- __le32 unused2;
- __le32 start;
- __le32 size;
- __le32 unused5;
- char type[8];
-};
-
-static inline int valid_ptec_sector(const unsigned char *data)
-{
- unsigned char checksum = 0x2a;
- int i;
-
- /*
- * If it looks like a PC/BIOS partition, then it
- * probably isn't PowerTec.
- */
- if (data[510] == 0x55 && data[511] == 0xaa)
- return 0;
-
- for (i = 0; i < 511; i++)
- checksum += data[i];
-
- return checksum == data[511];
-}
-
-/*
- * Purpose: allocate ICS partitions.
- * Params : hd - pointer to gendisk structure to store partition info.
- * dev - device number to access.
- * Returns: -1 on error, 0 for no ICS table, 1 for partitions ok.
- * Alloc : hda = whole drive
- * hda1 = ADFS partition 0 on first drive.
- * hda2 = ADFS partition 1 on first drive.
- * ..etc..
- */
-int adfspart_check_POWERTEC(struct parsed_partitions *state)
-{
- Sector sect;
- const unsigned char *data;
- const struct ptec_part *p;
- int slot = 1;
- int i;
-
- data = read_part_sector(state, 0, &sect);
- if (!data)
- return -1;
-
- if (!valid_ptec_sector(data)) {
- put_dev_sector(sect);
- return 0;
- }
-
- strlcat(state->pp_buf, " [POWERTEC]", PAGE_SIZE);
-
- for (i = 0, p = (const struct ptec_part *)data; i < 12; i++, p++) {
- u32 start = le32_to_cpu(p->start);
- u32 size = le32_to_cpu(p->size);
-
- if (size)
- put_partition(state, slot++, start, size);
- }
-
- put_dev_sector(sect);
- strlcat(state->pp_buf, "\n", PAGE_SIZE);
- return 1;
-}
-#endif
-
-#ifdef CONFIG_ACORN_PARTITION_EESOX
-struct eesox_part {
- char magic[6];
- char name[10];
- __le32 start;
- __le32 unused6;
- __le32 unused7;
- __le32 unused8;
-};
-
-/*
- * Guess who created this format?
- */
-static const char eesox_name[] = {
- 'N', 'e', 'i', 'l', ' ',
- 'C', 'r', 'i', 't', 'c', 'h', 'e', 'l', 'l', ' ', ' '
-};
-
-/*
- * EESOX SCSI partition format.
- *
- * This is a goddamned awful partition format. We don't seem to store
- * the size of the partition in this table, only the start addresses.
- *
- * There are two possibilities where the size comes from:
- * 1. The individual ADFS boot block entries that are placed on the disk.
- * 2. The start address of the next entry.
- */
-int adfspart_check_EESOX(struct parsed_partitions *state)
-{
- Sector sect;
- const unsigned char *data;
- unsigned char buffer[256];
- struct eesox_part *p;
- sector_t start = 0;
- int i, slot = 1;
-
- data = read_part_sector(state, 7, &sect);
- if (!data)
- return -1;
-
- /*
- * "Decrypt" the partition table. God knows why...
- */
- for (i = 0; i < 256; i++)
- buffer[i] = data[i] ^ eesox_name[i & 15];
-
- put_dev_sector(sect);
-
- for (i = 0, p = (struct eesox_part *)buffer; i < 8; i++, p++) {
- sector_t next;
-
- if (memcmp(p->magic, "Eesox", 6))
- break;
-
- next = le32_to_cpu(p->start);
- if (i)
- put_partition(state, slot++, start, next - start);
- start = next;
- }
-
- if (i != 0) {
- sector_t size;
-
- size = get_capacity(state->bdev->bd_disk);
- put_partition(state, slot++, start, size - start);
- strlcat(state->pp_buf, "\n", PAGE_SIZE);
- }
-
- return i ? 1 : 0;
-}
-#endif
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