Hi all, I've got some problem when booting mips32. I got a No.23 trap when calling start_kernel ---> local_irq_enable : irq 23, desc: 802a98a0, depth: 1, count: 0, unhandled: 0 ->handle_irq(): 80148c6c, handle_bad_irq+0x0/0x2b4 ->chip(): 8029f738, 0x8029f738 ->action(): 00000000 IRQ_DISABLED set unexpected IRQ # 23 No.23 trap is a Watch trap, which means that, when "Physical address of load/store matched enabled value in WatchLo/ WatahHi registers." happened, a No.23 trap was triggered by cpu. So I used macro __u32 watch_regh0= read_c0_watchhi0(); __u32 watch_regl0= read_c0_watchlo0(); to retrieve value from WatchHi and WatchLo,found them 0x1 and 0x0 respectively,which mean that , 'r' together with 'w' bits were set to zero and no trap should be triggered. But now , I got a 23 trap, why ? At last , I used to set WatchHi to 0x0, but failed , found it still 0x1 after calling write_c0_watchhi0(0) Any suggestion would be grateful. regards
