Part_dos.c file:
......
Static void print_one_part (DOS_PARTITION_T * P, INT EXT_PART_Sector, INT Part_NUM)
{// Print a partition information
......
Printf ("% 5D / T / T% 10D / T% 10D / T% 2x% S / N",
Part_num, lba_start, lba_size, p-> sys_ind,
(IS_EXTENDED (P-> SYS_IND)? "EXTD": ""));
}
Static int test_block_type (unsigned char * buffer)
{// test block type
IF ((Buffer [DOS_PART_MAGIC_OFFSET 0]! = 0x55) ||
(Buffer [DOS_PART_MAGIC_OFFSET 1]! = 0xAA)) {
Return (-1);
} // is not a DOS block
IF (Strncmp (& Buffer [DOS_PBR_FSTYPE_OFFSET], "FAT", 3) == 0)
Return DOS_PBR; / * IS PBR * /
Return DOS_MBR; / * IS MBR * /
}
INT TEST_PART_DOS (Block_DEV_DESC_T * DEV_DESC)
{// Test is DOS block
UNSIGNED Char Buffer [default_sector_size];
IF ((dev_desc-> block_read (dev_desc-> dev, 0, 1, (ulong *) buffer! = 1) ||
(Buffer [dos_part_magic_offset 0]! = 0x55) ||
(Buffer [DOS_PART_MAGIC_OFFSET 1]! = 0xAA)) {
Return (-1);
}
Return (0);
}
Static void print_partition_exteded (block_dev_desc_t * dev_desc, int ext_part_sector, int in)
{// Output partition information related to its extension partition table
......
// Output all major / logical partitions
Pt = (DOS_PARTITION_T *) (Buffer DOS_PART_TBL_OFFSET);
For (i = 0; i <4; i , pt ) {// file system does not show partitions other than MBR
IF ((pt-> sys_ind! = 0) &&
(EXT_PART_Sector == 0 ||! is_exteded)) {
Print_one_part (PT, EXT_PART_Sector, Part_num);
}
/ * REVERSE ENGR The fdisk part # assignment rule! * /
IF ((EXT_PART_Sector == 0) ||
(PT-> SYS_IND! = 0 &&! Is_exteded (Pt-> Sys_ind)))) {
Part_num ;
}
}
// Handling extension partition
Pt = (DOS_PARTITION_T *) (Buffer DOS_PART_TBL_OFFSET);
For (i = 0; i <4; i , pt ) {if (is_extended (Pt-> sys_ind) {
INT LBA_START = LE32_TO_INT (Pt-> Start4) Relative;
Print_Partition_extended (dev_desc, lba_start,
EXT_PART_Sector == 0? LBA_START
: Relative,
Part_num);
}
}
Return;
}
Static int GET_PARTITION_INFO_EXTENDED (Block_DEV_DESC_T * DEV_DESC, INT EXT_PART_Sector, INT Relative, Int Part_num, int which_part, disk_partition_t * info)
{// Get partition information related to its extension partition table
......
}
......
Part_iso.c file:
INT GET_PARTITION_INFO_ISO_VERB (Block_DEV_DESC_T * DEV_DESC, INT Part_NUM, DISK_PARTITION_T * INFO, INT VERB)
{/ / Partition information for ISO device blocks
......
// The first part must be the main volume
BLKADDR = PVD_offset;
IF (dev_desc-> block_read (dev_desc-> dev, pvd_offset, 1, (ulong *) TMPBUF)! = 1)
Return (-1);
IF (PPR-> Desctype! = 0x01) {
IF (Verb)
Printf ("** first descriptor is not a primary dec on% D:% D ** / N",
DEV_DESC-> DEV, Part_NUM;
Return (-1);
}
IF (Strncmp (PPR-> Stand_Ident, "CD001", 5)! = 0) {
IF (Verb)
Printf ("** WRONG ISO IDENT:% SON% D:% D ** / N",
PPR-> Stand_ident, dev_desc-> dev, part_num);
Return (-1);
}
......
// Looking for entrance
IF (Strncmp (PBR-> Ident_Str, "El Torito Specification", 23)! = 0) {
IF (Verb)
Printf ("** WRONG EL TORITO IDENT:% S on% D:% D ** / N",
PBR-> Ident_Str, DEV_DESC-> dev, part_num);
Return (-1);
}
Bootaddr = le32_to_int (PBR-> Pointer);
Printf ("Boot Entry AT: 08LX / N", Bootaddr);
IF (dev_desc-> block_read (dev_desc-> dev, bootaddr, 1, (ulong *) TMPBUF)! = 1) {
IF (Verb)
Printf ("** can't read boot entry at% LX ON% D:% D ** / N",
Bootaddr, dev_desc-> dev, part_num);
Return (-1);
}
......
/ / Find the effective entrance, now look for partition
Entry_num = 0;
OFFSET = 0x20; Sprintf (INFO-> Type, "U-boot");
Switch (dev_desc-> if_type) {
Case if_type_ide:
Case if_type_atapi:
Sprintf (INFO-> Name, "HD% C% D / N", 'A' DEV_DESC-> dev, part_num);
Break;
......
DEFAULT:
Sprintf (Info-> Name, "XX% C% D / N", 'A' DEV_DESC-> dev, part_num);
Break;
}
// bootcatalog (include Validation Entry) must be less than 2048bytes
While (Offset <2048) {
PIDE = (ISO_INIT_DEF_ENTRY_T *) & TMPBUF [OFFSET];
IF ((pide-> boot_ind == 0x88) ||
(Pide-> Boot_ind == 0x00)) {// The ID header of the default entry
IF (entry_num == part_num) {// Find partition
Goto Found;
}
Entry_num ; // Record the number of partition portions
OFFSET = 0x20;
CONTINUE;
}
IF ((pide-> boot_ind == 0x90) || / * section header entry * /
(Pide-> Boot_ind == 0x91) || / * Section Header Entry (Last) * /
(pide-> boot_ind == 0x44)) {/ * extension indeicator * /
OFFSET = 0x20; // Skip unused portals
}
Else {
IF (Verb)
Printf ("** part% d not found on device% d ** / n",
Part_num, dev_desc-> dev);
Return (-1);
}
}
......
NEWBLKADDR = Le32_to_int (pide-> rel iblock_addr);
Info-> start = newblkaddr;
Printf ("Part% D Found @% lx size% lx / n", part_num, newblkaddr, info-> size);
Return 0;
}
INT GET_PARTITION_INFO_ISO (Block_DEV_DESC_T * DEV_DESC, INT Part_NUM, DISK_PARTITION_T * INFO)
{
Return (GET_PARTITION_INFO_ISO_VERB (dev_desc, part_num, info, 1));
}
Void Print_Part_ISO (Block_DEV_DESC_T * DEV_DESC)
{// Print partition information
Disk_partition_t info;
INT I;
IF (GET_PARTITION_INFO_ISO_VERB (dev_desc, 0, & info, 0) == - 1) {
Printf ("** no boot partition found on device% d ** / n", dev_desc-> dev);
Return;
}
Printf ("Part Start STT X size Type / N); i = 0;
Do {
Printf ("% 2D% 8LD% 8LD% 6LD% .32S / N",
I, Info.start, Info.Size, Info.blksz, Info.type
i ;
} while (get_partition_info_iso_verb (dev_desc, i, & info, 0)! = - 1);
}
INT TEST_PART_ISO (Block_DEV_DESC_T * DEV_DESC)
{Test is an ISO partition
Disk_partition_t info;
Return (get_partition_info_iso_verb (dev_desc, 0, & info, 0));
}
Part_mac.c file:
INT TEST_PART_MAC (Block_Dev_desc_t * dev_desc)
{// Check if it is a valid MAC partition
......
IF (part_mac_read_ddb (dev_desc, & ddesc)) {// read block error, or no valid information
Return (-1);
n = 1; // Hypothesis at least one partition
For (i = 1; i <= n; i) {
IF ((dev_desc-> block_read (dev_desc-> dev, i, 1, (ulong *) & mpart)! = 1) ||
(mpart.signaature! = mac_partition_magic)) {
Return (-1);
}
N = mpart.map_count; Update partition number
}
Return (0);
}
Void Print_Part_mac (Block_Dev_desc_t * dev_desc)
{// output MAC partition information
......
IF (part_mac_read_ddb (dev_desc, & ddesc)) {
/ * Error Reading Driver Desriptor Block, or no valid signature * /
Return;
}
N = ddesc.blk_count;
......
Printf ("Block size =% D, Number of Blocks =% D,"
"Total Capacity:% ld.% Ld MB =% ld.% Ld GB / N"
"DeviceType = 0x% x, deviceid = 0x% x / N / N"
"#: Type Name"
"Length Base (size) / n",
DDesc.blk_size,
Ddesc.blk_count,
Mb.quot, Mb.Rem, gb.quot, gb.rem,
DDesc.dev_type, ddesc.dev_id
);
n = 1; // Hypothesis at least one partition
For (i = 1; i <= n; i) {
......
Printf ("% 20.32S% -18.32S% 10u @% -10u (% 3LD% C) / N",
MPart.Type,
Mpart.name,
Mpart.block_count,
Mpart.start_block,
Bytes, C
);
}
Return;
}
Static INT Part_MAC_READ_DDB (Block_DEV_DESC_T * DEV_DESC, MAC_DRIVER_DESC_T * DDB_P) {// Read Device Description Block Information
......
IF (DDB_P-> Signature! = Mac_Driver_magic) {
#if 0
Printf ("** bad signature: expected 0x% 04x, got 0x% 04x / n",
Mac_Driver_magic, DDB_P-> Signature);
#ENDIF
Return (-1);
}
Return (0);
}
Static INT Part_MAC_READ_PDB (Block_DEV_DESC_T * DEV_DESC, INT PART, MAC_PARTITION_T * PDB_P)
{// read partition descriptor information
INT n = 1;
For (;;) {// must start reading the block from the first partition, only this can know how many partitions
IF (dev_desc-> block_read (dev_desc-> dev, n, 1, (ulong *) PDB_P)! = 1) {
Printf ("** can't read partition map on% d:% d ** / n",
DEV_DESC-> DEV, N);
Return (-1);
}
IF (PDB_P-> Signature! = mac_partition_magic) {
Printf ("** bad signature on% d:% D:"
"EXPECTED 0X% 04X, GOT 0x% 04x / N",
DEV_DESC-> DEV, N, MAC_PARTITION_MAGIC, PDB_P-> SIGNATURE);
Return (-1);
}
IF (n == part)
Return (0);
IF ((Part <1) || (Part> PDB_P-> Map_count)) {
Printf ("** invalid part% d:% D [% D: 1 ...% D:% D Only] / N",
DEV_DESC-> dev, part,
DEV_DESC-> DEV,
DEV_DESC-> DEV, PDB_P-> Map_count);
Return (-1);
}
n = part; // Update the number of partitions
}
}
INT GET_PARTITION_INFO_MAC (Block_DEV_DESC_T * DEV_DESC, INT Part, Disk_Partition_t * Info)
{// Get information on the MAC partition
Mac_Driver_desc_t ddesc;
Mac_Partition_t mpart;
IF (part_mac_read_ddb (dev_desc, & ddesc)) {
Return (-1);
}
INFO-> BLKSZ = DDESC.BLK_SIZE;
IF (part_mac_read_pdb (dev_desc, part, & mpart) {
Return (-1);
}
INFO-> Start = mpart.start_block;
Info-> size = mpart.block_count;
Memcpy (Info-> Type, Mpart.Type, SizeOf (Info-> Type);
Memcpy (Info-> Name, Mpart.Name, Sizeof (Info-> Name);
Return (0);
four. Commonly use U-boot command introduction
1.List gets all command list 2.Help: Help USB, listing the usb function instructions 3.ping: Note: You can only develop board PING other machine 4.Stenv: Setting mutual environment variable: 5.senv ServerIP 192.168. 0.16.Stenv ipaddr 192.168.0.567.senv bootcmd 'TFTP 32000000 VMLinux; kgo
32000000
'
8.SaveEnv: Save Environment Variable 9. After setting the environment variable, save the variable value 10.TFTP: TFTP 32000000 VMLinux, put the server (IP = environment variable) / tftpdroot / under the VMLinux read in TFTP Go to 3200,000 physical memory. 11.Kgo: KGO 3200000012.BOOTM: Bootm 320000013.Protect: Write the Flash to write to flash, protectOn 1: 0-3 (就 对 对) The first FLASH 0-3 sector is protected), protect off 1: 0-3 Cancel write protection 14.rase: Delete Flash sectors, ERASE 1: 0-2 (is 0-2 for each Flash Sector delete) 15.cp: copy content in memory, CP 32000000 0 40000 (copy 0x40000 bytes starting in memory to 0x40000 bytes to 0x0) 16.MW: Write an operation in RAM, MW 32000000 FF 10000 (Set the 0x10000 bytes starting in memory 0x32000000) 17.md: Modify the content in the RAM, MD 32000000 (Memory start address) 18.USB: LUSB Start: Start USB Function LUSB INFO: List device LUSB SCAN : Scan the USB Storage (U disk) device 19.fatls: Lists the DOS FAT file system, such as FATLS USB 0 lists files in the first U disk 20.fatload: read into a file in FAT, such as: Fatload USB 0: 0 32000000 aa.txt21. Read Aa.txt in USB to 0x32000000! 22.flinfo: Lists Flash information 23.LoadB: Prepare to receive files from kermit or super terminal transfer with Kermit protocol. 24.NFS: NFS 32000000 192.168.0.2:Aa.txt, the AA.TXT in the NFS file system in 192.168.0.2 (LINUX NFS file system) is read into memory 0x32000000.
