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![Simon Glass](/assets/img/avatar_default.png)
To ease conversion to driver model, add helper functions which deal with calling each block device method. With driver model we can reimplement these functions with the same arguments. Use inline functions to avoid increasing code size on some boards. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Stephen Warren <swarren@nvidia.com>
309 lines
7.8 KiB
C
309 lines
7.8 KiB
C
/*
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* (C) Copyright 2001
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* Raymond Lo, lo@routefree.com
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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/*
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* Support for harddisk partitions.
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*
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* To be compatible with LinuxPPC and Apple we use the standard Apple
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* SCSI disk partitioning scheme. For more information see:
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* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
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*/
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#include <common.h>
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#include <command.h>
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#include <ide.h>
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#include <memalign.h>
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#include "part_dos.h"
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#ifdef HAVE_BLOCK_DEVICE
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#define DOS_PART_DEFAULT_SECTOR 512
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/* Convert char[4] in little endian format to the host format integer
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*/
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static inline unsigned int le32_to_int(unsigned char *le32)
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{
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return ((le32[3] << 24) +
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(le32[2] << 16) +
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(le32[1] << 8) +
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le32[0]
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);
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}
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static inline int is_extended(int part_type)
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{
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return (part_type == 0x5 ||
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part_type == 0xf ||
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part_type == 0x85);
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}
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static inline int is_bootable(dos_partition_t *p)
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{
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return p->boot_ind == 0x80;
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}
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static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
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int part_num, unsigned int disksig)
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{
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lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4);
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lbaint_t lba_size = le32_to_int (p->size4);
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printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
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"u\t%08x-%02x\t%02x%s%s\n",
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part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
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(is_extended(p->sys_ind) ? " Extd" : ""),
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(is_bootable(p) ? " Boot" : ""));
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}
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static int test_block_type(unsigned char *buffer)
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{
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int slot;
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struct dos_partition *p;
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if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
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(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
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return (-1);
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} /* no DOS Signature at all */
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p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
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for (slot = 0; slot < 3; slot++) {
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if (p->boot_ind != 0 && p->boot_ind != 0x80) {
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if (!slot &&
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(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
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"FAT", 3) == 0 ||
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strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
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"FAT32", 5) == 0)) {
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return DOS_PBR; /* is PBR */
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} else {
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return -1;
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}
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}
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}
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return DOS_MBR; /* Is MBR */
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}
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static int test_part_dos(struct blk_desc *dev_desc)
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{
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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if (blk_dread(dev_desc, 0, 1, (ulong *)buffer) != 1)
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return -1;
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if (test_block_type(buffer) != DOS_MBR)
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return -1;
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return 0;
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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static void print_partition_extended(struct blk_desc *dev_desc,
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lbaint_t ext_part_sector,
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lbaint_t relative,
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int part_num, unsigned int disksig)
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{
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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dos_partition_t *pt;
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int i;
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if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
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printf ("** Can't read partition table on %d:" LBAFU " **\n",
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dev_desc->devnum, ext_part_sector);
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return;
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}
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i=test_block_type(buffer);
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if (i != DOS_MBR) {
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printf ("bad MBR sector signature 0x%02x%02x\n",
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buffer[DOS_PART_MAGIC_OFFSET],
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buffer[DOS_PART_MAGIC_OFFSET + 1]);
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return;
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}
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if (!ext_part_sector)
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disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
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/* Print all primary/logical partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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/*
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* fdisk does not show the extended partitions that
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* are not in the MBR
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*/
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if ((pt->sys_ind != 0) &&
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(ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
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print_one_part(pt, ext_part_sector, part_num, disksig);
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}
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/* Reverse engr the fdisk part# assignment rule! */
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if ((ext_part_sector == 0) ||
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(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
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part_num++;
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}
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}
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/* Follows the extended partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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if (is_extended (pt->sys_ind)) {
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lbaint_t lba_start
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= le32_to_int (pt->start4) + relative;
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print_partition_extended(dev_desc, lba_start,
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ext_part_sector == 0 ? lba_start : relative,
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part_num, disksig);
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}
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}
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return;
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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static int part_get_info_extended(struct blk_desc *dev_desc,
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lbaint_t ext_part_sector, lbaint_t relative,
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int part_num, int which_part,
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disk_partition_t *info, unsigned int disksig)
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{
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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dos_partition_t *pt;
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int i;
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int dos_type;
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if (blk_dread(dev_desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
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printf ("** Can't read partition table on %d:" LBAFU " **\n",
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dev_desc->devnum, ext_part_sector);
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return -1;
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}
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if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
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buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
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printf ("bad MBR sector signature 0x%02x%02x\n",
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buffer[DOS_PART_MAGIC_OFFSET],
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buffer[DOS_PART_MAGIC_OFFSET + 1]);
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return -1;
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}
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#ifdef CONFIG_PARTITION_UUIDS
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if (!ext_part_sector)
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disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
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#endif
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/* Print all primary/logical partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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/*
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* fdisk does not show the extended partitions that
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* are not in the MBR
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*/
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if (((pt->boot_ind & ~0x80) == 0) &&
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(pt->sys_ind != 0) &&
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(part_num == which_part) &&
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(is_extended(pt->sys_ind) == 0)) {
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info->blksz = DOS_PART_DEFAULT_SECTOR;
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info->start = (lbaint_t)(ext_part_sector +
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le32_to_int(pt->start4));
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info->size = (lbaint_t)le32_to_int(pt->size4);
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switch(dev_desc->if_type) {
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case IF_TYPE_IDE:
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case IF_TYPE_SATA:
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case IF_TYPE_ATAPI:
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sprintf((char *)info->name, "hd%c%d",
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'a' + dev_desc->devnum,
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part_num);
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break;
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case IF_TYPE_SCSI:
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sprintf((char *)info->name, "sd%c%d",
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'a' + dev_desc->devnum,
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part_num);
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break;
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case IF_TYPE_USB:
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sprintf((char *)info->name, "usbd%c%d",
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'a' + dev_desc->devnum,
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part_num);
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break;
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case IF_TYPE_DOC:
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sprintf((char *)info->name, "docd%c%d",
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'a' + dev_desc->devnum,
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part_num);
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break;
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default:
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sprintf((char *)info->name, "xx%c%d",
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'a' + dev_desc->devnum,
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part_num);
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break;
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}
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/* sprintf(info->type, "%d, pt->sys_ind); */
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strcpy((char *)info->type, "U-Boot");
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info->bootable = is_bootable(pt);
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#ifdef CONFIG_PARTITION_UUIDS
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sprintf(info->uuid, "%08x-%02x", disksig, part_num);
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#endif
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return 0;
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}
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/* Reverse engr the fdisk part# assignment rule! */
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if ((ext_part_sector == 0) ||
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(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
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part_num++;
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}
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}
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/* Follows the extended partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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if (is_extended (pt->sys_ind)) {
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lbaint_t lba_start
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= le32_to_int (pt->start4) + relative;
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return part_get_info_extended(dev_desc, lba_start,
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ext_part_sector == 0 ? lba_start : relative,
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part_num, which_part, info, disksig);
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}
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}
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/* Check for DOS PBR if no partition is found */
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dos_type = test_block_type(buffer);
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if (dos_type == DOS_PBR) {
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info->start = 0;
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info->size = dev_desc->lba;
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info->blksz = DOS_PART_DEFAULT_SECTOR;
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info->bootable = 0;
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strcpy((char *)info->type, "U-Boot");
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#ifdef CONFIG_PARTITION_UUIDS
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info->uuid[0] = 0;
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#endif
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return 0;
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}
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return -1;
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}
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void print_part_dos(struct blk_desc *dev_desc)
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{
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printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
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print_partition_extended(dev_desc, 0, 0, 1, 0);
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}
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int part_get_info_dos(struct blk_desc *dev_desc, int part,
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disk_partition_t *info)
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{
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return part_get_info_extended(dev_desc, 0, 0, 1, part, info, 0);
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}
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U_BOOT_PART_TYPE(dos) = {
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.name = "DOS",
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.part_type = PART_TYPE_DOS,
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.get_info = part_get_info_ptr(part_get_info_dos),
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.print = part_print_ptr(print_part_dos),
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.test = test_part_dos,
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};
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#endif
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