Le mer. 23 mars 2022 à 03:28, qianfan <qianfangui...@163.com> a écrit : > > Hi: > > I had a custom AM335X board connected my computer by usbnet. It always report > data abort when 'dhcp': > > Next it the log: > > U-Boot 2022.01-rc1-00183-gfa5b4e2d19-dirty (Feb 25 2022 - 15:45:02 +0800) > > CPU : AM335X-GP rev 2.1 > Model: WISDOM AM335X CCT > DRAM: 512 MiB > NAND: 256 MiB > MMC: OMAP SD/MMC: 0 > Loading Environment from NAND... *** Warning - bad CRC, using default > environment > > Net: Could not get PHY for ethernet@4a100000: addr 0 > eth2: ethernet@4a100000, eth3: usb_ether > Hit any key to stop autoboot: 0 > => setenv autoload no > => dhcp > using musb-hdrc, OUT ep1out IN ep1in STATUS ep2in > MAC de:ad:be:ef:00:01 > HOST MAC de:ad:be:ef:00:00 > RNDIS ready > musb-hdrc: peripheral reset irq lost! > high speed config #2: 2 mA, Ethernet Gadget, using RNDIS > USB RNDIS network up! > BOOTP broadcast 1 > BOOTP broadcast 2 > BOOTP broadcast 3 > DHCP client bound to address 192.168.200.4 (757 ms) > data abort > pc : [<9fe9b0a2>] lr : [<9febbc3f>] > reloc pc : [<808130a2>] lr : [<80833c3f>] > sp : 9de53410 ip : 9de53578 fp : 00000001 > r10: 9de5345c r9 : 9de67e80 r8 : 9febbae5 > r7 : 9de72c30 r6 : 9feec710 r5 : 0000000d r4 : 00000018 > r3 : 3fdd8e04 r2 : 00000002 r1 : 9feec728 r0 : 9feec700 > Flags: Nzcv IRQs off FIQs on Mode SVC_32 (T) > Code: f023 0303 60ca 4403 (6091) 685a > Resetting CPU ... > Don't have any idea on what is causing the crash, but to answer your question about debugging data abort : from the reg dump, you can look at the PC and LR registers to see the function that caused the crash (in PC) and its caller (in LR) by using the .map file (generated after compilation). use the values of pc and lr ante relocation (the 2nd ligne in the dump above: reloc pc ...)
Regards -- Abder > resetting ... > > > It's there has any doc about how to debug data abort? Or is the bug is already > fixed? > > Thanks
