C++ (Cpp) arm32_kernel_vm_init Examples

Example #1

File: vexpress_machdep.c Project: krytarowski/netbsd-current-src-sys

u_int
initarm(void *arg)
{
#ifdef MEMSIZE
	psize_t memsize = (unsigned) MEMSIZE * 1024 * 1024;
#else
	/* If MEMSIZE is not defined, use QEMU's default value (128 MB) */
	psize_t memsize = (unsigned) 128 * 1024 * 1024;
#endif

	pmap_devmap_register(vexpress_devmap);

	set_cpufuncs();

	consinit();

	/* Talk to the user */
#define BDSTR(s)        _BDSTR(s)
#define _BDSTR(s)       #s
	printf("\nNetBSD/evbarm (" BDSTR(EVBARM_BOARDTYPE) ") booting ...\n");

#ifdef VERBOSE_INIT_ARM
	printf("initarm: cbar=%#x\n", armreg_cbar_read());
#endif

	bootconfig.dramblocks = 1;
	bootconfig.dram[0].address = KERN_VTOPHYS(KERNEL_BASE);
	bootconfig.dram[0].pages = memsize / PAGE_SIZE;

	arm32_bootmem_init(bootconfig.dram[0].address, memsize,
	    (uintptr_t) KERNEL_BASE_phys);

	arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_HIGH, 0, vexpress_devmap,
	    true);

#ifdef VERBOSE_INIT_ARM
	printf("initarm: Configuring system ...\n");
#endif

	cortex_pmc_ccnt_init();

	/* We've a specific device_register routine */
	evbarm_device_register = vexpress_device_register;

	return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);
}

Example #2

/*
 * u_int initarm(...)
 *
 * Initial entry point on startup. This gets called before main() is
 * entered.
 * It should be responsible for setting up everything that must be
 * in place when main is called.
 * This includes
 *   Taking a copy of the boot configuration structure.
 *   Initialising the physical console so characters can be printed.
 *   Setting up page tables for the kernel
 *   Relocating the kernel to the bottom of physical memory
 */
u_int
initarm(void *arg)
{
	pmap_devmap_register(devmap);
	awin_bootstrap(AWIN_CORE_VBASE, CONADDR_VA);

	/* Heads up ... Setup the CPU / MMU / TLB functions. */
	if (set_cpufuncs())
		panic("cpu not recognized!");

	/* The console is going to try to map things.  Give pmap a devmap. */
	consinit();

#ifdef VERBOSE_INIT_ARM
	printf("\nuboot arg = %#x, %#x, %#x, %#x\n",
	    uboot_args[0], uboot_args[1], uboot_args[2], uboot_args[3]);
#endif

#ifdef KGDB
	kgdb_port_init();
#endif

	cpu_reset_address = awin_wdog_reset;

#ifdef VERBOSE_INIT_ARM
	/* Talk to the user */
	printf("\nNetBSD/evbarm (cubie) booting ...\n");
#endif

#ifdef BOOT_ARGS
	char mi_bootargs[] = BOOT_ARGS;
	parse_mi_bootargs(mi_bootargs);
#endif

#ifdef VERBOSE_INIT_ARM
	printf("initarm: Configuring system ...\n");

#if defined(CPU_CORTEXA7) || defined(CPU_CORTEXA9) || defined(CPU_CORTEXA15)
	printf("initarm: cbar=%#x\n", armreg_cbar_read());
#endif
#endif

	/*
	 * Set up the variables that define the availability of physical
	 * memory.
	 */
	psize_t ram_size = awin_memprobe();

	/*
	 * If MEMSIZE specified less than what we really have, limit ourselves
	 * to that.
	 */
#ifdef MEMSIZE
	if (ram_size == 0 || ram_size > (unsigned)MEMSIZE * 1024 * 1024)
		ram_size = (unsigned)MEMSIZE * 1024 * 1024;
#else
	KASSERTMSG(ram_size > 0, "RAM size unknown and MEMSIZE undefined");
#endif

	/* Fake bootconfig structure for the benefit of pmap.c. */
	bootconfig.dramblocks = 1;
	bootconfig.dram[0].address = AWIN_SDRAM_PBASE;
	bootconfig.dram[0].pages = ram_size / PAGE_SIZE;

#ifdef __HAVE_MM_MD_DIRECT_MAPPED_PHYS
	const bool mapallmem_p = true;
	KASSERT(ram_size <= KERNEL_VM_BASE - KERNEL_BASE);
#else
	const bool mapallmem_p = false;
#endif
	KASSERT((armreg_pfr1_read() & ARM_PFR1_SEC_MASK) != 0);

	arm32_bootmem_init(bootconfig.dram[0].address, ram_size,
	    KERNEL_BASE_PHYS);
	arm32_kernel_vm_init(KERNEL_VM_BASE, ARM_VECTORS_LOW, 0, devmap,
	    mapallmem_p);

	if (mapallmem_p) {
		/*
		 * "bootargs" env variable is passed as 4th argument
		 * to kernel but it's using the physical address and
		 * we to convert that to a virtual address.
		 */
		if (uboot_args[3] - AWIN_SDRAM_PBASE < ram_size) {
			const char * const args = (const char *)
			     (uboot_args[3] + KERNEL_PHYS_VOFFSET);
			strlcpy(bootargs, args, sizeof(bootargs));
		}
	}

	boot_args = bootargs;
	parse_mi_bootargs(boot_args);

	/* we've a specific device_register routine */
	evbarm_device_register = cubie_device_register;

#if NAWIN_FB > 0
	char *ptr;
	if (get_bootconf_option(boot_args, "console",
		    BOOTOPT_TYPE_STRING, &ptr) && strncmp(ptr, "fb", 2) == 0) {
		use_fb_console = true;
	}
#endif
	
	return initarm_common(KERNEL_VM_BASE, KERNEL_VM_SIZE, NULL, 0);

}