tiny6410 uboot tftp 下载 ubi

在uboot 源码common/main.c的FriendlyARMMenu函数中增加几个选项用于tftp下载uboot , kernel , ubi

复制代码 printf("[m] medconn Download u-boot.bin by tftp\n");//u-boot.bin printf("[e] medconn Download zImage by tftp\n");//zImage printf("[d] medconn Download filesystem.ubi by tftp\n");//filesystem.ubi

复制代码 case 'M': case 'm'://uboot pos = 0; max_size = 256 K; len = 256 K; FriendlyARMGet_uboot_FromTftpAndWriteNand(max_size, pos, len, "u-boot.bin"); //SetLinuxCommandLine(NULL); break; case 'E': case 'e'://kernel if (NandIsMlc()) { pos = 4 M; max_size = 5 M - 128 K; len = 8 M; NAND_EraseBlock(1 M / NandBlockSizeInByte); } else { pos = 4 * 128 K; max_size = 5 M - 128 K; len = 5 M; } FriendlyARMGet_kernel_FromTftpAndWriteNand(max_size, pos, len, "zImage"); break; case 'D': case 'd'://ubi max_size = 126 M; len = (unsigned) -2; if (NandIsMlc()) { pos = 12 M; } else { pos = 5 M + 4 * 128 K; } FriendlyARMGet_UBI_FromTftpAndWriteNand(max_size, pos, len, "filesystem.ubi"); SetLinuxCommandLine("init=/linuxrc rootfstype=ubifs root=ubi0:FriendlyARM-root ubi.mtd=2 console=ttySAC0,115200"); break;

复制代码 extern int run_command (const char *cmd, int flag); int FriendlyARMGet_uboot_FromTftpAndWriteNand(unsigned max_len, unsigned offset, unsigned MaxNandSize, const char *Name) { int ret; unsigned char *RevPtr=(unsigned char *)0xc0000000;//从tftp下载xxx到内存的位置 unsigned RevLen=max_len;////xxx的长度 //offset，从内存取得数据写到nand的偏移位置 printf("Downloading %s from Tftp...\n", Name); //从tftp下载uboot到内存RevPtr位置处 run_command("tftp c0000000 u-boot.bin",0); printf("Downloading %s %s\n", Name, ret >= 0 ? "successed" : "failed"); printf("RevPtr= 0x%x, RevLen= 0x%x, nand offset= 0x%x, MaxNandSize=0x%x \n",RevPtr,RevLen,offset,MaxNandSize); if (ret < 0) { return ret; } ret = FriendlyARMCheckData(RevPtr, RevLen, offset, MaxNandSize); if (ret < 0) { return ret; } printf("Writing %s into NAND...\n", Name); if (NandIsMlc() && offset == 0) { ret = FriendlyARMWriteNandMlcBoot(RevPtr, RevLen, 1); } else { //从内存RevPtr位置取RevLen长的的数据写到nand的offset位置处 ret = FriendlyARMWriteNand(RevPtr, RevLen, offset, MaxNandSize); } printf("Writing %s %s\n", Name, ret >= 0 ? "successed" : "failed"); return ret; } int FriendlyARMGet_kernel_FromTftpAndWriteNand(unsigned max_len, unsigned offset, unsigned MaxNandSize, const char *Name) { int ret; unsigned char *RevPtr=(unsigned char *)0xc0000000;//从tftp下载xxx到内存的位置 unsigned RevLen=max_len;////xxx的长度 //offset，从内存取得数据写到nand的偏移位置 printf("Downloading %s from Tftp...\n", Name); //从tftp下载kernel到内存RevPtr位置处 ret=run_command("tftp c0000000 zImage",0); printf("Downloading %s %s\n", Name, ret >= 0 ? "successed" : "failed"); printf("RevPtr= 0x%x, RevLen= 0x%x, nand offset= 0x%x, MaxNandSize=0x%x \n",RevPtr,RevLen,offset,MaxNandSize); if (ret < 0) { return ret; } ret = FriendlyARMCheckData(RevPtr, RevLen, offset, MaxNandSize); if (ret < 0) { return ret; } printf("Writing %s into NAND...\n", Name); if (NandIsMlc() && offset == 0) { ret = FriendlyARMWriteNandMlcBoot(RevPtr, RevLen, 1); } else { //从内存RevPtr位置取RevLen长的的数据写到nand的offset位置处 ret = FriendlyARMWriteNand(RevPtr, RevLen, offset, MaxNandSize); } printf("Writing %s %s\n", Name, ret >= 0 ? "successed" : "failed"); return ret; } int FriendlyARMGet_UBI_FromTftpAndWriteNand(unsigned max_len, unsigned offset, unsigned MaxNandSize, const char *Name) {     int ret;     unsigned char *RevPtr=(unsigned char *)0xc0000000;//从tftp下载xxx到内存的位置     unsigned RevLen=max_len;////xxx的长度     //offset，从内存取得数据写到nand的偏移位置     printf("Downloading %s from Tftp...\n", Name); //从tftp下载ubi到内存RevPtr位置处     ret=run_command("tftp c0000000 filesystem.ubi",0);     printf("Downloading %s %s\n", Name, ret >= 0 ? "successed" : "failed");     printf("RevPtr= 0x%x, RevLen= 0x%x, nand offset= 0x%x, MaxNandSize=0x%x \n",RevPtr,RevLen,offset,MaxNandSize);     if (ret < 0) {         return ret;     }     ret = FriendlyARMCheckData(RevPtr, RevLen, offset, MaxNandSize);     if (ret < 0) {         return ret;     }     printf("Writing %s into NAND...\n", Name);     if (NandIsMlc() && offset == 0) {         ret = FriendlyARMWriteNandMlcBoot(RevPtr, RevLen, 1);     } else {         //从内存RevPtr位置取RevLen长的的数据写到nand的offset位置处         ret = FriendlyARMWriteNand(RevPtr, RevLen, offset, MaxNandSize);     }     printf("Writing %s %s\n", Name, ret >= 0 ? "successed" : "failed");          return ret;

说明：
1.友善提供的uboot没有tftp下载功能，只有usb下载功能。所以我就仿照里面的usb下载函数自己写了一个tftp下载函数，具体说是3个，分别用来下载uboot，kernel，ubi.即
FriendlyARMGet_uboot_FromTftpAndWriteNand ，FriendlyARMGet_kernel_FromTftpAndWriteNand，FriendlyARMGet_UBI_FromTftpAndWriteNand
2.友善提供的FriendlyARMGetDataFromUsbAndWriteNand函数是先通过usb把pc上的一个文件加载到内存0xc0000000（是线性地址，uboot开了mmu），然后再调用函数FriendlyARMWriteNand把内存中的相应数据写入nandflash的对应分区。对于SLC 1G的nand，按如下分区下载的


（512KB）
3.基于2，我先用tftp把文件下载到0xc000 0000,然后同样再调用函数FriendlyARMWriteNand把内存中的相应数据写入nandflash的对应分区。但是测得的结果是uboot可以下载并成功运行；kernel也可以下载并成功运行；ubifs可以成功下载，但是启动的结果老是ubifs报错：

Creating 4 MTD partitions on "NAND 1GiB 3,3V 8-bit":
0x000000000000-0x000000080000 : "Bootloader"
0x000000080000-0x000000580000 : "Kernel"
0x000000580000-0x000040000000 : "File System"
UBI: attaching mtd2 to ubi0
UBI: physical eraseblock size:   131072 bytes (128 KiB)
UBI: logical eraseblock size:    129024 bytes
UBI: smallest flash I/O unit:    2048
UBI: sub-page size:              512
UBI: VID header offset:          512 (aligned 512)
UBI: data offset:                2048
UBI: max. sequence number:       19
UBI: attached mtd2 to ubi0
UBI: MTD device name:            "File System"
UBI: MTD device size:            1018 MiB
UBI: number of good PEBs:        8146
UBI: number of bad PEBs:         2
UBI: number of corrupted PEBs:   0
UBI: max. allowed volumes:       128
UBI: wear-leveling threshold:    4096
UBI: number of internal volumes: 1
UBI: number of user volumes:     1
UBI: available PEBs:             0
UBI: total number of reserved PEBs: 8146
UBI: number of PEBs reserved for bad PEB handling: 81
UBI: max/mean erase counter: 9/0
UBI: image sequence number:  1929542009
UBI: background thread "ubi_bgt0d" started, PID 546
...
...
UBIFS: recovery needed
s3c-nand: 1 bit error detected at byte 55, correcting from 0xfa to 0x7a...OK
s3c-nand: 1 bit error detected at byte 397, correcting from 0x00 to 0x02...OK
UBI error: ubi_io_read: error -74 (ECC error) while reading 2048 bytes from PEB 2383:129024, read 2048 bytes
s3c-nand: 1 bit error detected at byte 42, correcting from 0x00 to 0x10...OK
s3c-nand: 1 bit error detected at byte 370, correcting from 0x00 to 0x02...OK
s3c-nand: 1 bit error detected at byte 256, correcting from 0x00 to 0x01...OK
UBI error: ubi_io_read: error -74 (ECC error) while reading 24576 bytes from PEB 325:106496, read 24576 bytes
UBIFS error (pid 685): ubifs_check_node: bad node length 0
one_wire_status: 4
UBIFS error (pid 685): ubifs_check_node: bad node at LEB 323:104448
UBIFS error (pid 685): ubifs_scanned_corruption: corruption at LEB 323:104448
UBIFS error (pid 685): ubifs_recover_leb: LEB 323 scanning failed
mount: mounting ubi0:FriendlyARM-root on /r failed: Structure needs cleaning
/init: line 103: can't open /r/dev/console: no such file
Kernel panic - not syncing: Attempted to kill init!
[<c0176c44>] (unwind_backtrace+0x0/0xe4) from [<c04b2a58>] (panic+0x58/0x174)
[<c04b2a58>] (panic+0x58/0x174) from [<c0188ed0>] (do_exit+0x68/0x5e4)
[<c0188ed0>] (do_exit+0x68/0x5e4) from [<c0189710>] (do_group_exit+0x90/0xc4)
[<c0189710>] (do_group_exit+0x90/0xc4) from [<c0189754>] (sys_exit_group+0x10/0x18)
[<c0189754>] (sys_exit_group+0x10/0x18) from [<c01715e0>] (ret_fast_syscall+0x0/0x30)
one_wire_status: 2

并且有时即使启动成功，ubifs文件系统也变成只读的了。

4.
错误显示ubifs没有正确写入。
我分析可能出错的过程或者在a .tftp下载ubifs到内存时出错，或者在 b.将内存数据写到nand时出错
对于a，通过随机抽取几个使用usb下载到内存里的数据和使用tftp下载到内存里的数据，经对比数据一致。查看方法，在uboot下执行md.l 0xc0000000 len
对于b，使用的是同一个函数FriendlyARMWriteNand将内存数据写到nand，难道还会不一样。并且参数也设的基本一样。
参数max_size和len有什么不同呢？

谢谢。