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);
}
/*
* 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);
}