Example #1
0
/*
 * fiq_installhandler:
 *
 *	Actually install the FIQ handler down at the FIQ vector.
 *
 *	Note: If the FIQ is invoked via an extra layer of
 *	indirection, the actual FIQ code store lives in the
 *	data segment, so there is no need to manipulate
 *	the vector page's protection.
 */
static void
fiq_installhandler(void *func, size_t size)
{
#if !defined(__ARM_FIQ_INDIRECT)
	vector_page_setprot(VM_PROT_READ|VM_PROT_WRITE);
#endif

	memcpy(vector_page + fiqvector, func, size);

#if !defined(__ARM_FIQ_INDIRECT)
	vector_page_setprot(VM_PROT_READ);
	cpu_icache_sync_range((vm_offset_t) fiqvector, size);
#endif
}
Example #2
0
/*
 * fiq_installhandler:
 *
 *	Actually install the FIQ handler down at the FIQ vector.
 *
 *	Note: If the FIQ is invoked via an extra layer of
 *	indirection, the actual FIQ code store lives in the
 *	data segment, so there is no need to manipulate
 *	the vector page's protection.
 */
static void
fiq_installhandler(void *func, size_t size)
{
#if !defined(__ARM_FIQ_INDIRECT)
	vector_page_setprot(PROT_READ | PROT_WRITE | PROT_EXEC);
#endif

	memcpy(fiqvector, func, size);

#if !defined(__ARM_FIQ_INDIRECT)
	vector_page_setprot(PROT_READ | PROT_EXEC);
#endif
	cpu_icache_sync_range((vaddr_t) fiqvector, size);
}
Example #3
0
/*
 * void cpu_startup(void)
 *
 * Machine dependant startup code. 
 *
 */
void
cpu_startup()
{
	u_int loop;
	paddr_t minaddr;
	paddr_t maxaddr;

	proc0paddr = (struct user *)kernelstack.pv_va;
	proc0.p_addr = proc0paddr;

	/* Set the cpu control register */
	cpu_setup();

	/* Lock down zero page */
	vector_page_setprot(VM_PROT_READ|VM_PROT_EXECUTE);

	/*
	 * Give pmap a chance to set up a few more things now the vm
	 * is initialised
	 */
	pmap_postinit();

	/*
	 * Allow per-board specific initialization
	 */
	board_startup();

	/*
	 * Initialize error message buffer (at end of core).
	 */

	/* msgbufphys was setup during the secondary boot strap */
	for (loop = 0; loop < atop(MSGBUFSIZE); ++loop)
		pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE,
		    msgbufphys + loop * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE);
	pmap_update(pmap_kernel());
	initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE));

	/*
	 * Identify ourselves for the msgbuf (everything printed earlier will
	 * not be buffered).
	 */
	printf(version);

	printf("real mem  = %u (%uMB)\n", ptoa(physmem),
	    ptoa(physmem)/1024/1024);

	/*
	 * Allocate a submap for exec arguments.  This map effectively
	 * limits the number of processes exec'ing at any time.
	 */
	minaddr = vm_map_min(kernel_map);
	exec_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
				   16*NCARGS, VM_MAP_PAGEABLE, FALSE, NULL);

	/*
	 * Allocate a submap for physio
	 */
	phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
				   VM_PHYS_SIZE, 0, FALSE, NULL);

	/*
	 * Set up buffers, so they can be used to read disk labels.
	 */
	bufinit(); 

	printf("avail mem = %lu (%uMB)\n", ptoa(uvmexp.free),
	    ptoa(uvmexp.free)/1024/1024);

	curpcb = &proc0.p_addr->u_pcb;
	curpcb->pcb_flags = 0;
	curpcb->pcb_un.un_32.pcb32_und_sp = (u_int)proc0.p_addr +
	    USPACE_UNDEF_STACK_TOP;
	curpcb->pcb_un.un_32.pcb32_sp = (u_int)proc0.p_addr +
	    USPACE_SVC_STACK_TOP;
	pmap_set_pcb_pagedir(pmap_kernel(), curpcb);

	curpcb->pcb_tf = (struct trapframe *)curpcb->pcb_un.un_32.pcb32_sp - 1;
}
Example #4
0
/*
 * void cpu_startup(void)
 *
 * Machine dependent startup code. 
 *
 */
void
cpu_startup(void)
{
	vaddr_t minaddr;
	vaddr_t maxaddr;
	char pbuf[9];

	/*
	 * Until we better locking, we have to live under the kernel lock.
	 */
	//KERNEL_LOCK(1, NULL);

	/* Set the CPU control register */
	cpu_setup(boot_args);

#ifndef ARM_HAS_VBAR
	/* Lock down zero page */
	vector_page_setprot(VM_PROT_READ);
#endif

	/*
	 * Give pmap a chance to set up a few more things now the vm
	 * is initialised
	 */
	pmap_postinit();

	/*
	 * Initialize error message buffer (at end of core).
	 */

	/* msgbufphys was setup during the secondary boot strap */
	if (!pmap_extract(pmap_kernel(), (vaddr_t)msgbufaddr, NULL)) {
		for (u_int loop = 0; loop < btoc(MSGBUFSIZE); ++loop) {
			pmap_kenter_pa((vaddr_t)msgbufaddr + loop * PAGE_SIZE,
			    msgbufphys + loop * PAGE_SIZE,
			    VM_PROT_READ|VM_PROT_WRITE, 0);
		}
	}
	pmap_update(pmap_kernel());
	initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE));

	/*
	 * Identify ourselves for the msgbuf (everything printed earlier will
	 * not be buffered).
	 */
	printf("%s%s", copyright, version);

	format_bytes(pbuf, sizeof(pbuf), arm_ptob(physmem));
	printf("total memory = %s\n", pbuf);

	minaddr = 0;

	/*
	 * Allocate a submap for physio
	 */
	phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
				   VM_PHYS_SIZE, 0, false, NULL);

	format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
	printf("avail memory = %s\n", pbuf);

	struct lwp * const l = &lwp0;
	struct pcb * const pcb = lwp_getpcb(l);
	pcb->pcb_ksp = uvm_lwp_getuarea(l) + USPACE_SVC_STACK_TOP;
	lwp_settrapframe(l, (struct trapframe *)pcb->pcb_ksp - 1);
}