Hello,
My platform is ARM (zynqmp), seL4 v8. I have created a timer in simple initial thread:
int err; seL4_timer_t timer; vka_object_t ntfn_object; ntfn_object.cptr = 0; err = vka_alloc_notification(&_env.vka, &ntfn_object); assert(err == 0);
err = sel4platsupport_init_default_timer(&_env.vka, &_env.vspace, &_env.simple, ntfn_object.cptr, &timer); err = ltimer_set_timeout(&timer.ltimer, NS_IN_MS * 20, TIMEOUT_PERIODIC); assert(err == 0);
int count = 0; int count_s = 0; while (1) { /* Handle the timer interrupt */ seL4_Word badge; seL4_Wait(ntfn_object.cptr, &badge); printf("time_thread: badge=%lx\n", badge); sel4platsupport_handle_timer_irq(&timer, badge); count++; if ((count / 50) * 50 == count) { count_s++; printf("-----------------timer=%d %d\n", count, count_s); } }
It works fine (I am not sure why TIMESTAMP timer interrupt coming every ~40 sec, but it's not an issue right now)
Now I am trying to move all this timer code into a new thread, which I have created in the same vspace
// create thread void initSleep(env_t penv) //seL4_BootInfo *info) { _penv = penv;
vka_object_t tcb_object = {0}; int error = vka_alloc_tcb(&penv->vka, &tcb_object);
seL4_CPtr cspace_cap; cspace_cap = simple_get_cnode(&penv->simple); seL4_CPtr pd_cap; pd_cap = simple_get_pd(&penv->simple); seL4_CPtr ipc_page; seL4_Word ipc_buffer = (seL4_Word)vspace_new_ipc_buffer(&penv->vspace, &ipc_page); error = seL4_TCB_Configure(tcb_object.cptr, , seL4_NilData, cspace_cap, seL4_NilData, pd_cap, seL4_NilData, ipc_buffer, ipc_page); error = seL4_TCB_SetPriority(tcb_object.cptr, simple_get_tcb(&penv->simple), seL4_MaxPrio); seL4_UserContext regs = { .pc = (seL4_Word)time_thread, .sp = (seL4_Word)thread_time_stack }; error = seL4_TCB_WriteRegisters(tcb_object.cptr, 0, 0, 2, ®s); error = seL4_TCB_Resume(tcb_object.cptr); }
And this is thread function
static void time_thread(void) { _tick_number = 0; int count_s = 0; init_timer(); while (1) { /* Handle the timer interrupt */ seL4_Word badge; seL4_Wait(timer_ntfn_object.cptr, &badge); printf("time_thread: badge=%lx\n", badge); sel4platsupport_handle_timer_irq(&timer, badge); _tick_number++; if ((_tick_number / 50) * 50 == _tick_number) { count_s++; printf("-----------------timer=%lu %d\n", _tick_number, count_s); } }
The system crashed: setup_irq@timer.c:81 Setting up IRQ 8000000000000000 <<seL4(CPU 0) [handleInvocation/281 T0xff8000001200 "child of: 'rootserver'" @42195c]: Invocation of invalid cap #48762580.>>
Here is dump:
/home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/functions.h:23 421938: d53bd066 mrs x6, tpidrro_el0 setup_irq(): /home/lm/sel4vm/libs/libsel4platsupport/src/timer.c:85 error = seL4_IRQHandler_SetNotification(irq->handler_path.capPtr, irq->badged_ntfn_path.capPtr); 42193c: f85c8340 ldur x0, [x26,#-56] arm_sys_send_recv(): /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:165 register seL4_Word msg1 asm("x3") = *in_out_mr1; 421940: d2800003 mov x3, #0x0 // #0 seL4_SetCap(): /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/arch/functions.h:59 421944: f901e8c1 str x1, [x6,#976] arm_sys_send_recv(): /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:166 register seL4_Word msg2 asm("x4") = *in_out_mr2; 421948: d2800004 mov x4, #0x0 // #0 /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:167 register seL4_Word msg3 asm("x5") = *in_out_mr3; 42194c: d2800005 mov x5, #0x0 // #0 /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:170 register seL4_Word scno asm("x7") = sys; 421950: 92800007 mov x7, #0xffffffffffffffff // #-1 /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:161 register seL4_Word info asm("x1") = info_arg; 421954: d2941001 mov x1, #0xa080 // #41088 421958: f2a00021 movk x1, #0x1, lsl #16 /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/sel4_arch/syscalls.h:171 asm volatile ( 42195c: d4000002 hvc #0x0 seL4_MessageInfo_get_label(): /home/lm/sel4vm/stage/arm/zynqmp/include/sel4/shared_types_gen.h:49
I suspect that my thread initialization is not right, can somebody see any problem? Thank you, Leonid
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