/**
* arm_init
*
* Initialize the core ARM subsystems, this routine is called from the
* boot loader. A basic identity mapping is created in __start, however,
* arm_vm_init will create new mappings.
*/
void arm_init(boot_args* args) {
cpu_data_t* bootProcessorData;
processor_t bootProcessor;
uint32_t baMaxMem;
uint64_t maxMem;
thread_t thread;
/*
* Welcome to arm_init, may I take your order?
*/
PE_early_puts("arm_init: starting up\n");
/*
* arm_init is only called on processor #0, the others will enter using arm_slave_init.
*/
bootProcessor = cpu_processor_alloc(TRUE);
if(!bootProcessor) {
panic("Something really wacky happened here with cpu_processor_alloc\n");
}
/*
* Pin the processor information to CPU #0.
*/
PE_early_puts("arm_init: calling cpu_bootstrap\n");
cpu_bootstrap();
/*
* Initialize core processor data.
*/
bootProcessorData = current_cpu_datap();
bootProcessorData->cpu_number = 0;
bootProcessorData->cpu_active_stack = &irqstack;
bootProcessorData->cpu_phys_number = 0;
bootProcessorData->cpu_preemption_level = 1;
bootProcessorData->cpu_interrupt_level = 0;
bootProcessorData->cpu_running = 1;
/*
* Initialize the core thread subsystem (This sets up a template
* which will then be used to initialize the rest of the thread
* system later.)
*
* Additionally, this also sets the current kernel thread register
* to our bootstrap thread.
*/
PE_early_puts("arm_init: calling thread_bootstrap\n");
thread_bootstrap();
/*
* CPU initialization.
*/
PE_early_puts("arm_init: calling cpu_init\n");
cpu_init();
/*
* Mach processor bootstrap.
*/
PE_early_puts("arm_init: calling processor_bootstrap\n");
processor_bootstrap();
/*
* Initialize the ARM platform expert.
*/
PE_early_puts("arm_init: calling PE_init_platform\n");
PE_init_platform(FALSE, (void*)args);
/*
* Initialize kprintf, but no VM is running yet.
*/
PE_init_kprintf(FALSE);
/*
* Set maximum memory size based on boot-args.
*/
if(!PE_parse_boot_argn("maxmem", &baMaxMem, sizeof(baMaxMem)))
maxMem = 0;
else
maxMem = (uint64_t)baMaxMem * (1024 * 1024);
/*
* After this, we'll no longer be using physical mappings created by the bootloader.
*/
arm_vm_init(maxMem, args);
/*
* Kernel early bootstrap.
*/
kernel_early_bootstrap();
/*
* PE platform init.
*/
PE_init_platform(TRUE, (void*)args);
/*
* Enable I+D cache.
*/
char tempbuf[16];
if(PE_parse_boot_argn("-no-cache", tempbuf, sizeof(tempbuf))) {
kprintf("cache: No caching enabled (I+D).\n");
} else {
kprintf("cache: initializing i+dcache\n");
cache_initialize();
kprintf("cache: done\n");
}
/*
* Start system timers.
*/
thread = current_thread();
thread->machine.preempt_count = 1;
thread->machine.cpu_data = cpu_datap(cpu_number());
thread->kernel_stack = irqstack;
timer_start(&thread->system_timer, mach_absolute_time());
/*
* VFP/float initialization.
*/
init_vfp();
/*
* Machine startup.
*/
machine_startup();
/*
* If anything returns, bad things(tm) have happened.
*/
PE_early_puts("arm_init: Still alive\n");
panic("why are we still here, NOO");
while(1);
}
void PE_init_iokit(void)
{
enum { kMaxBootVar = 128 };
typedef struct {
char name[32];
unsigned long length;
unsigned long value[2];
} DriversPackageProp;
boolean_t bootClutInitialized = FALSE;
boolean_t noroot_rle_Initialized = FALSE;
DTEntry entry;
unsigned int size;
uint32_t *map;
boot_progress_element *bootPict;
norootIcon_lzss = NULL;
norootClut_lzss = NULL;
PE_init_kprintf(TRUE);
PE_init_printf(TRUE);
kprintf("Kernel boot args: '%s'\n", PE_boot_args());
/*
* Fetch the CLUT and the noroot image.
*/
if( kSuccess == DTLookupEntry(NULL, "/chosen/memory-map", &entry)) {
if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size)) {
if (sizeof(appleClut8) <= map[1]) {
bcopy( (void *)ml_static_ptovirt(map[0]), appleClut8, sizeof(appleClut8) );
bootClutInitialized = TRUE;
}
}
if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
bootPict = (boot_progress_element *) ml_static_ptovirt(map[0]);
default_noroot.width = bootPict->width;
default_noroot.height = bootPict->height;
default_noroot.dx = 0;
default_noroot.dy = bootPict->yOffset;
default_noroot_data = &bootPict->data[0];
noroot_rle_Initialized = TRUE;
}
if( kSuccess == DTGetProperty(entry, "FailedCLUT", (void **) &map, &size)) {
norootClut_lzss = (uint8_t*) ml_static_ptovirt(map[0]);
}
if( kSuccess == DTGetProperty(entry, "FailedImage", (void **) &map, &size)) {
norootIcon_lzss = (boot_icon_element *) ml_static_ptovirt(map[0]);
if (norootClut_lzss == NULL) {
printf("ERROR: No FailedCLUT provided for noroot icon!\n");
}
}
}
if (!bootClutInitialized) {
bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
}
if (!noroot_rle_Initialized) {
default_noroot.width = kFailedBootWidth;
default_noroot.height = kFailedBootHeight;
default_noroot.dx = 0;
default_noroot.dy = kFailedBootOffset;
default_noroot_data = failedBootPict;
}
/*
* Initialize the spinning wheel (progress indicator).
*/
vc_progress_initialize( &default_progress, default_progress_data1x, default_progress_data2x,
(unsigned char *) appleClut8 );
(void) StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, gPEEFIRuntimeServices, NULL);
}
/**
* arm_init
*
* Initialize the core ARM subsystems, this routine is called from the
* boot loader. A basic identity mapping is created in __start, however,
* arm_vm_init will create new mappings.
*/
void arm_init(boot_args * args)
{
cpu_data_t *bootProcessorData;
processor_t bootProcessor;
uint32_t baMaxMem;
uint64_t maxMem;
thread_t thread;
/*
* We are in.
*/
PE_early_puts("arm_init: starting up\n");
/*
* arm_init is only called on processor #0, the others will enter using arm_slave_init.
*/
bootProcessor = cpu_processor_alloc(TRUE);
if (!bootProcessor) {
panic("cpu_processor_alloc failed\n");
}
/*
* Pin the processor information to CPU #0.
*/
PE_early_puts("arm_init: calling cpu_bootstrap\n");
cpu_bootstrap();
/*
* Initialize core processor data.
*/
bootProcessorData = current_cpu_datap();
bootProcessorData->cpu_number = 0;
bootProcessorData->cpu_active_stack = (vm_offset_t)&irqstack;
bootProcessorData->cpu_phys_number = 0;
bootProcessorData->cpu_preemption_level = 1;
bootProcessorData->cpu_interrupt_level = 0;
bootProcessorData->cpu_running = 1;
bootProcessorData->cpu_pending_ast = AST_NONE;
/*
* Initialize the core thread subsystem (This sets up a template
* which will then be used to initialize the rest of the thread
* system later.)
*
* Additionally, this also sets the current kernel thread register
* to our bootstrap thread.
*/
PE_early_puts("arm_init: calling thread_bootstrap\n");
thread_bootstrap();
/*
* CPU initialization.
*/
PE_early_puts("arm_init: calling cpu_init\n");
cpu_init();
/*
* Mach processor bootstrap.
*/
PE_early_puts("arm_init: calling processor_bootstrap\n");
processor_bootstrap();
/*
* Initialize the ARM platform expert.
*/
PE_early_puts("arm_init: calling PE_init_platform\n");
PE_init_platform(FALSE, (void *) args);
/*
* Initialize kprintf, but no VM is running yet.
*/
PE_init_kprintf(FALSE);
/*
* Set maximum memory size based on boot-args.
*/
if (!PE_parse_boot_argn("maxmem", &baMaxMem, sizeof(baMaxMem)))
maxMem = 0;
else
maxMem = (uint64_t) baMaxMem *(1024 * 1024);
/*
* After this, we'll no longer be using physical mappings created by the bootloader.
*/
arm_vm_init(maxMem, args);
/*
* Kernel early bootstrap.
*/
kernel_early_bootstrap();
/*
* PE platform init.
*/
PE_init_platform(TRUE, (void *) args);
/*
* Enable I+D cache.
*/
char tempbuf[16];
if (PE_parse_boot_argn("-no-cache", tempbuf, sizeof(tempbuf))) {
kprintf("cache: No caching enabled (I+D).\n");
} else {
kprintf("cache: initializing i+dcache ... ");
cache_initialize();
kprintf("done\n");
}
/*
* Specify serial mode.
*/
serialmode = 0;
if (PE_parse_boot_argn("serial", &serialmode, sizeof(serialmode))) {
/*
* We want a serial keyboard and/or console
*/
kprintf("Serial mode specified: %08X\n", serialmode);
}
if (serialmode & 1) {
(void) switch_to_serial_console();
disableConsoleOutput = FALSE; /* Allow printfs to happen */
}
/*
* Start system timers.
*/
thread = current_thread();
thread->machine.preempt_count = 1;
thread->machine.cpu_data = cpu_datap(cpu_number());
thread->kernel_stack = irqstack;
timer_start(&thread->system_timer, mach_absolute_time());
/*
* Processor identification.
*/
arm_processor_identify();
/*
* VFP/float initialization.
*/
init_vfp();
/*
* Machine startup.
*/
machine_startup();
/*
* If we return, something very bad is happening.
*/
panic("20:02:14 <DHowett> wwwwwwwat is HAAAAAAAPPENING\n");
/*
* Last chance.
*/
while (1) ;
}
