void startup(void)
{
#if defined(CONFIG_BAREMETAL_ENABLE_DCACHE)
init_tlb(main_tlb);
assign_tlb(main_tlb);
enable_cache();
#elif defined(CONFIG_BAREMETAL_ENABLE_ICACHE)
enable_cache();
#endif
#if defined(CONFIG_BAREMETAL_DDR_INIT)
ddr_init();
#endif
#if defined(CONFIG_BAREMETAL_PLL0_INIT)
pll0_init();
#endif
#if defined(CONFIG_BAREMETAL_UART_BASIC)
uart_basic_init();
#endif
main();
halt();
}
/*
* Main
*/
int main(void) {
init_tlb();
enable_tlb();
printf("Hello from Nios II!\n");
mutex = altera_avalon_mutex_open(MUTEX_0_NAME); // Initialize the hardware mutex
mbox = OSSemCreate(0); // Initialize the message box
CriticalFunctionPointers* cp = (CriticalFunctionPointers*)SHARED_MEMORY_BASE;
// Wait for monitor to be done initialization of shared variables before retrieving their values
while(cp->init_complete == 0);
init_cpu1_isr(); // Initialize the ISR
// Set the task(only one in this example)
int arg_5 = CRITICAL_TASK_PRIORITY;
OSTaskCreateExt(preemption_task, &arg_5, &critical_task_stk[TASK_STACKSIZE - 1],
CRITICAL_TASK_PRIORITY, CRITICAL_TASK_PRIORITY,
critical_task_stk, TASK_STACKSIZE, NULL,0);
// Signal that the core has finished initializing
altera_avalon_mutex_lock(mutex, 1); // Acquire the hardware mutex
{
cp->core_ready[1] = 1;
}
altera_avalon_mutex_unlock(mutex); // Memory
// Start OS
OSStart();
return 0;
}
hwaddr_t page_translate(lnaddr_t addr) {
if(this_cr3 != cpu.cr3.val) {
init_tlb();
this_cr3 = cpu.cr3.val;
}
return tlb_read(addr);
}
hwaddr_t page_translate(lnaddr_t addr, uint32_t len) {
if(cr3 != cpu.cr._[3]) {
init_tlb();
cr3 = cpu.cr._[3];
// printf("^_^%x\n", cr3);
}
return tlb_read(addr, len);
}
static void init_caches() {
init_cache();
init_cache2();
init_tlb();
}
