[已解决]通过NFS引导根d镜像出错，麻烦大家看看

问题已解决，方法参见：移植2.6.31到mini2440成功！
好容易把U-boot、kernel2.6.31移植完了，本以为会轻松，结果……

话说u-boot移植成功了，通过tftp方式把内核烧入了nand，然后设置好引导参数，通过NFS启动。
NFS这边，根镜像是直接把mini2440带的板子里的linux/root_qtopia.tgz文件。
引导后，错误如下（从前十行来可以看出，内核成功引导并且挂在上了NFS上的根文件系统的）：

复制代码 s3c2410-rtc s3c2410-rtc: setting system clock to 2009-10-02 14:39:26 UTC (1254494366) eth0: link down IP-Config: Complete:      device=eth0, addr=192.168.0.111, mask=255.255.255.0, gw=192.168.0.10,      host=mini2440, domain=, nis-domain=gooth.cn,      bootserver=192.168.0.10, rootserver=192.168.0.10, rootpath= Looking up port of RPC 100003/2 on 192.168.0.10 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1 Looking up port of RPC 100005/1 on 192.168.0.10 VFS: Mounted root (nfs filesystem) on device 0:14. Freeing init memory: 128K Unable to handle kernel paging request at virtual address 6bd00004 pgd = c39f0000 [6bd00004] *pgd=00000000 Internal error: Oops: 5 [#1] Modules linked in: CPU: 0    Not tainted  (2.6.31 #15) PC is at s3c2410_gpio_setpin+0x1c/0x3c LR is at s3c24xx_led_set+0x24/0x48 pc : [<c00319f4>]    lr : [<c020d854>]    psr: 60000093 sp : c3825c10  ip : 6bd00000  fp : c03f4348 r10: c03f4748  r9 : c03f4548  r8 : c03f4948 r7 : c3824000  r6 : c39c7540  r5 : 00000000  r4 : 60000013 r3 : 60000093  r2 : 00010000  r1 : 00000001  r0 : e1a00009 Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user Control: c000717f  Table: 339f0000  DAC: 00000015 Process init (pid: 1, stack limit = 0xc3824270) Stack: (0xc3825c10 to 0xc3826000) 5c00:                                     c00246d8 c020d854 0000002e c39df6e0 5c20: c39c7540 c020dea4 c03f3b40 00000100 c020ddc0 c0043304 c3825c38 c3825c38 …… 5fc0: 40025050 40025000 bec13c98 400252c8 bec13f10 400255dc 40025000 bec13c74 5fe0: 40000000 bec13c58 40000c88 40014bb0 60000010 ffffffff 33cc33cc 33cc33cc [<c00319f4>] (s3c2410_gpio_setpin+0x1c/0x3c) from [<c020d854>] (s3c24xx_led_set+0x24/0x48) [<c020d854>] (s3c24xx_led_set+0x24/0x48) from [<c020dea4>] (led_heartbeat_function+0xe4/0x104) [<c020dea4>] (led_heartbeat_function+0xe4/0x104) from [<c0043304>] (run_timer_softirq+0x154/0x1e8) [<c0043304>] (run_timer_softirq+0x154/0x1e8) from [<c003f0d8>] (__do_softirq+0x78/0x104) [<c003f0d8>] (__do_softirq+0x78/0x104) from [<c0028068>] (_text+0x68/0x80) [<c0028068>] (_text+0x68/0x80) from [<c00289e4>] (__irq_svc+0x24/0xa0) Exception stack(0xc3825ca0 to 0xc3825ce8) 5ca0: 00000000 c3a49010 00000002 02000000 c39d2a00 c3813a5c c3813a5c c3a41524 5cc0: 00001000 c3411638 00000000 c3a41520 3111e76d c3825ce8 c3a49004 c02a388c 5ce0: 60000013 ffffffff [<c00289e4>] (__irq_svc+0x24/0xa0) from [<c02a388c>] (call_transmit+0x148/0x294) [<c02a388c>] (call_transmit+0x148/0x294) from [<c02a9cb8>] (__rpc_execute+0x84/0x28c) [<c02a9cb8>] (__rpc_execute+0x84/0x28c) from [<c02a42c0>] (rpc_run_task+0x60/0x68) [<c02a42c0>] (rpc_run_task+0x60/0x68) from [<c0103d84>] (nfs_read_rpcsetup+0x1a4/0x1cc) [<c0103d84>] (nfs_read_rpcsetup+0x1a4/0x1cc) from [<c0101d3c>] (nfs_pageio_doio+0x44/0x74) [<c0101d3c>] (nfs_pageio_doio+0x44/0x74) from [<c0101e60>] (nfs_pageio_add_request+0xf4/0x108) [<c0101e60>] (nfs_pageio_add_request+0xf4/0x108) from [<c0103904>] (readpage_async_filler+0xdc/0x154) [<c0103904>] (readpage_async_filler+0xdc/0x154) from [<c006aff0>] (read_cache_pages+0x7c/0xf4) [<c006aff0>] (read_cache_pages+0x7c/0xf4) from [<c01035f4>] (nfs_readpages+0xfc/0x16c) [<c01035f4>] (nfs_readpages+0xfc/0x16c) from [<c006aabc>] (__do_page_cache_readahead+0x12c/0x1dc) [<c006aabc>] (__do_page_cache_readahead+0x12c/0x1dc) from [<c006ab90>] (ra_submit+0x24/0x28) [<c006ab90>] (ra_submit+0x24/0x28) from [<c0063dbc>] (filemap_fault+0x1ac/0x374) [<c0063dbc>] (filemap_fault+0x1ac/0x374) from [<c007481c>] (__do_fault+0x50/0x3b0) [<c007481c>] (__do_fault+0x50/0x3b0) from [<c0075a4c>] (handle_mm_fault+0x250/0x590) [<c0075a4c>] (handle_mm_fault+0x250/0x590) from [<c002e544>] (do_page_fault+0xe0/0x22c) [<c002e544>] (do_page_fault+0xe0/0x22c) from [<c0028d7c>] (ret_from_exception+0x0/0x10) Code: e121f003 e3c0c01f e1a0c0ac e28cc4fb (e59c3004) Kernel panic - not syncing: Fatal exception in interrupt [<c002d6a8>] (unwind_backtrace+0x0/0xdc) from [<c02c1af0>] (panic+0x40/0x118) [<c02c1af0>] (panic+0x40/0x118) from [<c002c520>] (die+0x13c/0x168) [<c002c520>] (die+0x13c/0x168) from [<c002e454>] (__do_kernel_fault+0x64/0x74) [<c002e454>] (__do_kernel_fault+0x64/0x74) from [<c002e670>] (do_page_fault+0x20c/0x22c) [<c002e670>] (do_page_fault+0x20c/0x22c) from [<c002822c>] (do_DataAbort+0x30/0x90) [<c002822c>] (do_DataAbort+0x30/0x90) from [<c00289a0>] (__dabt_svc+0x40/0x60) Exception stack(0xc3825bc8 to 0xc3825c10) 5bc0:                   e1a00009 00000001 00010000 60000093 60000013 00000000 5be0: c39c7540 c3824000 c03f4948 c03f4548 c03f4748 c03f4348 6bd00000 c3825c10 5c00: c020d854 c00319f4 60000093 ffffffff [<c00289a0>] (__dabt_svc+0x40/0x60) from [<c00319f4>] (s3c2410_gpio_setpin+0x1c/0x3c) [<c00319f4>] (s3c2410_gpio_setpin+0x1c/0x3c) from [<c020d854>] (s3c24xx_led_set+0x24/0x48) [<c020d854>] (s3c24xx_led_set+0x24/0x48) from [<c020dea4>] (led_heartbeat_function+0xe4/0x104) [<c020dea4>] (led_heartbeat_function+0xe4/0x104) from [<c0043304>] (run_timer_softirq+0x154/0x1e8) [<c0043304>] (run_timer_softirq+0x154/0x1e8) from [<c003f0d8>] (__do_softirq+0x78/0x104) [<c003f0d8>] (__do_softirq+0x78/0x104) from [<c0028068>] (_text+0x68/0x80) [<c0028068>] (_text+0x68/0x80) from [<c00289e4>] (__irq_svc+0x24/0xa0) Exception stack(0xc3825ca0 to 0xc3825ce8) 5ca0: 00000000 c3a49010 00000002 02000000 c39d2a00 c3813a5c c3813a5c c3a41524 5cc0: 00001000 c3411638 00000000 c3a41520 3111e76d c3825ce8 c3a49004 c02a388c 5ce0: 60000013 ffffffff [<c00289e4>] (__irq_svc+0x24/0xa0) from [<c02a388c>] (call_transmit+0x148/0x294) [<c02a388c>] (call_transmit+0x148/0x294) from [<c02a9cb8>] (__rpc_execute+0x84/0x28c) [<c02a9cb8>] (__rpc_execute+0x84/0x28c) from [<c02a42c0>] (rpc_run_task+0x60/0x68) [<c02a42c0>] (rpc_run_task+0x60/0x68) from [<c0103d84>] (nfs_read_rpcsetup+0x1a4/0x1cc) [<c0103d84>] (nfs_read_rpcsetup+0x1a4/0x1cc) from [<c0101d3c>] (nfs_pageio_doio+0x44/0x74) [<c0101d3c>] (nfs_pageio_doio+0x44/0x74) from [<c0101e60>] (nfs_pageio_add_request+0xf4/0x108) [<c0101e60>] (nfs_pageio_add_request+0xf4/0x108) from [<c0103904>] (readpage_async_filler+0xdc/0x154) [<c0103904>] (readpage_async_filler+0xdc/0x154) from [<c006aff0>] (read_cache_pages+0x7c/0xf4) [<c006aff0>] (read_cache_pages+0x7c/0xf4) from [<c01035f4>] (nfs_readpages+0xfc/0x16c) [<c01035f4>] (nfs_readpages+0xfc/0x16c) from [<c006aabc>] (__do_page_cache_readahead+0x12c/0x1dc) [<c006aabc>] (__do_page_cache_readahead+0x12c/0x1dc) from [<c006ab90>] (ra_submit+0x24/0x28) [<c006ab90>] (ra_submit+0x24/0x28) from [<c0063dbc>] (filemap_fault+0x1ac/0x374) [<c0063dbc>] (filemap_fault+0x1ac/0x374) from [<c007481c>] (__do_fault+0x50/0x3b0) [<c007481c>] (__do_fault+0x50/0x3b0) from [<c0075a4c>] (handle_mm_fault+0x250/0x590) [<c0075a4c>] (handle_mm_fault+0x250/0x590) from [<c002e544>] (do_page_fault+0xe0/0x22c) [<c002e544>] (do_page_fault+0xe0/0x22c) from [<c0028d7c>] (ret_from_exception+0x0/0x10)

11行上有个

复制代码 Freeing init memory: 128K

好像说空闲内存才128K。好像有点不对哦？
启动的时候把内核拷到0x3100 0000，大小有0x50 0000这么大。算起来也才用掉20M左右，还有100多M呢

从内核的oops看，问题应该出在s3c24xx_led_set()调用s3c2410_gpio_setpin()上。你修改过2.6.31的源代码吗？

引用第1楼athurg于2009-10-02 14:51发表的  :
11行上有个

复制代码 Freeing init memory: 128K

好像说空闲内存才128K。好像有点不对哦？
启动的时候把内核拷到0x3100 0000，大小有0x50 0000这么大。算起来也才用掉20M左右，还有100多M呢

这个和Flash或者SDRAM的空闲空间没关系。

源代码基本没修改过。

现在有个问题就是在u-boot里修改了参数后无法保存。nand flash是可以写入的，不过需要先手动解除保护

复制代码 protect off all

不过就算解除保护了，也保存不了参数（环境变量）

呵呵，我在想我应该先帮你看哪个问题，内核crash还是U-Boot？

内核的问题解决了，哈哈！
帮我看看uboot的吧！
内核的问题容我稍后整理一下。