diff options
Diffstat (limited to 'qemu/roms/u-boot/disk/part_amiga.c')
| -rw-r--r-- | qemu/roms/u-boot/disk/part_amiga.c | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/qemu/roms/u-boot/disk/part_amiga.c b/qemu/roms/u-boot/disk/part_amiga.c deleted file mode 100644 index 260a3d5e8..000000000 --- a/qemu/roms/u-boot/disk/part_amiga.c +++ /dev/null @@ -1,382 +0,0 @@ -/* - * (C) Copyright 2001 - * Hans-Joerg Frieden, Hyperion Entertainment - * Hans-JoergF@hyperion-entertainment.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ -#include <common.h> -#include <command.h> -#include <ide.h> -#include "part_amiga.h" - -#ifdef HAVE_BLOCK_DEVICE - -#undef AMIGA_DEBUG - -#ifdef AMIGA_DEBUG -#define PRINTF(fmt, args...) printf(fmt ,##args) -#else -#define PRINTF(fmt, args...) -#endif - -struct block_header -{ - u32 id; - u32 summed_longs; - s32 chk_sum; -}; - -static unsigned char block_buffer[DEFAULT_SECTOR_SIZE]; -static struct rigid_disk_block rdb = {0}; -static struct bootcode_block bootcode = {0}; - -/* - * Copy a bcpl to a c string - */ -static void bcpl_strcpy(char *to, char *from) -{ - int len = *from++; - - while (len) - { - *to++ = *from++; - len--; - } - *to = 0; -} - -/* - * Print a BCPL String. BCPL strings start with a byte with the length - * of the string, and don't contain a terminating nul character - */ -static void bstr_print(char *string) -{ - int len = *string++; - char buffer[256]; - int i; - - i = 0; - while (len) - { - buffer[i++] = *string++; - len--; - } - - buffer[i] = 0; - printf("%-10s", buffer); -} - -/* - * Sum a block. The checksum of a block must end up at zero - * to be valid. The chk_sum field is selected so that adding - * it yields zero. - */ -int sum_block(struct block_header *header) -{ - s32 *block = (s32 *)header; - u32 i; - s32 sum = 0; - - for (i = 0; i < header->summed_longs; i++) - sum += *block++; - - return (sum != 0); -} - -/* - * Print an AmigaOS disk type. Disk types are a four-byte identifier - * describing the file system. They are usually written as a three-letter - * word followed by a backslash and a version number. For example, - * DOS\0 would be the original file system. SFS\0 would be SmartFileSystem. - * DOS\1 is FFS. - */ -static void print_disk_type(u32 disk_type) -{ - char buffer[6]; - buffer[0] = (disk_type & 0xFF000000)>>24; - buffer[1] = (disk_type & 0x00FF0000)>>16; - buffer[2] = (disk_type & 0x0000FF00)>>8; - buffer[3] = '\\'; - buffer[4] = (disk_type & 0x000000FF) + '0'; - buffer[5] = 0; - printf("%s", buffer); -} - -/* - * Print the info contained within the given partition block - */ -static void print_part_info(struct partition_block *p) -{ - struct amiga_part_geometry *g; - - g = (struct amiga_part_geometry *)&(p->environment); - - bstr_print(p->drive_name); - printf("%6d\t%6d\t", - g->low_cyl * g->block_per_track * g->surfaces , - (g->high_cyl - g->low_cyl + 1) * g->block_per_track * g->surfaces - 1); - print_disk_type(g->dos_type); - printf("\t%5d\n", g->boot_priority); -} - -/* - * Search for the Rigid Disk Block. The rigid disk block is required - * to be within the first 16 blocks of a drive, needs to have - * the ID AMIGA_ID_RDISK ('RDSK') and needs to have a valid - * sum-to-zero checksum - */ -struct rigid_disk_block *get_rdisk(block_dev_desc_t *dev_desc) -{ - int i; - int limit; - char *s; - - s = getenv("amiga_scanlimit"); - if (s) - limit = simple_strtoul(s, NULL, 10); - else - limit = AMIGA_BLOCK_LIMIT; - - for (i=0; i<limit; i++) - { - ulong res = dev_desc->block_read(dev_desc->dev, i, 1, - (ulong *)block_buffer); - if (res == 1) - { - struct rigid_disk_block *trdb = (struct rigid_disk_block *)block_buffer; - if (trdb->id == AMIGA_ID_RDISK) - { - PRINTF("Rigid disk block suspect at %d, checking checksum\n",i); - if (sum_block((struct block_header *)block_buffer) == 0) - { - PRINTF("FOUND\n"); - memcpy(&rdb, trdb, sizeof(struct rigid_disk_block)); - return (struct rigid_disk_block *)&rdb; - } - } - } - } - PRINTF("Done scanning, no RDB found\n"); - return NULL; -} - -/* - * Search for boot code - * Again, the first boot block must be located somewhere in the first 16 blocks, or rooted in the - * Ridgid disk block - */ - -struct bootcode_block *get_bootcode(block_dev_desc_t *dev_desc) -{ - int i; - int limit; - char *s; - - s = getenv("amiga_scanlimit"); - if (s) - limit = simple_strtoul(s, NULL, 10); - else - limit = AMIGA_BLOCK_LIMIT; - - PRINTF("Scanning for BOOT from 0 to %d\n", limit); - - for (i = 0; i < limit; i++) - { - ulong res = dev_desc->block_read(dev_desc->dev, i, 1, (ulong *)block_buffer); - if (res == 1) - { - struct bootcode_block *boot = (struct bootcode_block *)block_buffer; - if (boot->id == AMIGA_ID_BOOT) - { - PRINTF("BOOT block at %d, checking checksum\n", i); - if (sum_block((struct block_header *)block_buffer) == 0) - { - PRINTF("Found valid bootcode block\n"); - memcpy(&bootcode, boot, sizeof(struct bootcode_block)); - return &bootcode; - } - } - } - } - - PRINTF("No boot code found on disk\n"); - return 0; -} - -/* - * Test if the given partition has an Amiga partition table/Rigid - * Disk block - */ -int test_part_amiga(block_dev_desc_t *dev_desc) -{ - struct rigid_disk_block *rdb; - struct bootcode_block *bootcode; - - PRINTF("test_part_amiga: Testing for an Amiga RDB partition\n"); - - rdb = get_rdisk(dev_desc); - if (rdb) - { - bootcode = get_bootcode(dev_desc); - if (bootcode) - PRINTF("test_part_amiga: bootable Amiga disk\n"); - else - PRINTF("test_part_amiga: non-bootable Amiga disk\n"); - - return 0; - } - else - { - PRINTF("test_part_amiga: no RDB found\n"); - return -1; - } - -} - -/* - * Find partition number partnum on the given drive. - */ -static struct partition_block *find_partition(block_dev_desc_t *dev_desc, int partnum) -{ - struct rigid_disk_block *rdb; - struct partition_block *p; - u32 block; - - PRINTF("Trying to find partition block %d\n", partnum); - rdb = get_rdisk(dev_desc); - if (!rdb) - { - PRINTF("find_partition: no rdb found\n"); - return NULL; - } - - PRINTF("find_partition: Scanning partition list\n"); - - block = rdb->partition_list; - PRINTF("find_partition: partition list at 0x%x\n", block); - - while (block != 0xFFFFFFFF) - { - ulong res = dev_desc->block_read(dev_desc->dev, block, 1, - (ulong *)block_buffer); - if (res == 1) - { - p = (struct partition_block *)block_buffer; - if (p->id == AMIGA_ID_PART) - { - PRINTF("PART block suspect at 0x%x, checking checksum\n",block); - if (sum_block((struct block_header *)p) == 0) - { - if (partnum == 0) break; - else - { - partnum--; - block = p->next; - } - } - } else block = 0xFFFFFFFF; - } else block = 0xFFFFFFFF; - } - - if (block == 0xFFFFFFFF) - { - PRINTF("PART block not found\n"); - return NULL; - } - - return (struct partition_block *)block_buffer; -} - -/* - * Get info about a partition - */ -int get_partition_info_amiga (block_dev_desc_t *dev_desc, int part, disk_partition_t *info) -{ - struct partition_block *p = find_partition(dev_desc, part-1); - struct amiga_part_geometry *g; - u32 disk_type; - - if (!p) return -1; - - g = (struct amiga_part_geometry *)&(p->environment); - info->start = g->low_cyl * g->block_per_track * g->surfaces; - info->size = (g->high_cyl - g->low_cyl + 1) * g->block_per_track * g->surfaces - 1; - info->blksz = rdb.block_bytes; - bcpl_strcpy(info->name, p->drive_name); - - - disk_type = g->dos_type; - - info->type[0] = (disk_type & 0xFF000000)>>24; - info->type[1] = (disk_type & 0x00FF0000)>>16; - info->type[2] = (disk_type & 0x0000FF00)>>8; - info->type[3] = '\\'; - info->type[4] = (disk_type & 0x000000FF) + '0'; - info->type[5] = 0; - - return 0; -} - -void print_part_amiga (block_dev_desc_t *dev_desc) -{ - struct rigid_disk_block *rdb; - struct bootcode_block *boot; - struct partition_block *p; - u32 block; - int i = 1; - - rdb = get_rdisk(dev_desc); - if (!rdb) - { - PRINTF("print_part_amiga: no rdb found\n"); - return; - } - - PRINTF("print_part_amiga: Scanning partition list\n"); - - block = rdb->partition_list; - PRINTF("print_part_amiga: partition list at 0x%x\n", block); - - printf("Summary: DiskBlockSize: %d\n" - " Cylinders : %d\n" - " Sectors/Track: %d\n" - " Heads : %d\n\n", - rdb->block_bytes, rdb->cylinders, rdb->sectors, - rdb->heads); - - printf(" First Num. \n" - "Nr. Part. Name Block Block Type Boot Priority\n"); - - while (block != 0xFFFFFFFF) - { - ulong res; - - PRINTF("Trying to load block #0x%X\n", block); - - res = dev_desc->block_read(dev_desc->dev, block, 1, - (ulong *)block_buffer); - if (res == 1) - { - p = (struct partition_block *)block_buffer; - if (p->id == AMIGA_ID_PART) - { - PRINTF("PART block suspect at 0x%x, checking checksum\n",block); - if (sum_block((struct block_header *)p) == 0) - { - printf("%-4d ", i); i++; - print_part_info(p); - block = p->next; - } - } else block = 0xFFFFFFFF; - } else block = 0xFFFFFFFF; - } - - boot = get_bootcode(dev_desc); - if (boot) - { - printf("Disk is bootable\n"); - } -} - -#endif |