/**
* PE_init_platform
*
* Initialize the platform expert for ARM.
*/
void PE_init_platform(boolean_t vm_initialized, void * _args)
{
boot_args *args = (boot_args *)_args;
if (PE_state.initialized == FALSE) {
PE_early_puts("PE_init_platform: My name is Macintosh.\n");
PE_early_puts("PE_init_platform: Initializing for the first time.\n");
PE_state.initialized = TRUE;
PE_state.bootArgs = _args;
PE_state.deviceTreeHead = args->deviceTreeP;
PE_state.video.v_baseAddr = args->Video.v_baseAddr;
PE_state.video.v_rowBytes = args->Video.v_rowBytes;
PE_state.video.v_width = args->Video.v_width;
PE_state.video.v_height = args->Video.v_height;
PE_state.video.v_depth = args->Video.v_depth;
PE_state.video.v_display = args->Video.v_display;
strcpy(PE_state.video.v_pixelFormat, "PPPPPPPP");
}
if (!vm_initialized)
{
/* Initialize the device tree crap. */
PE_early_puts("PE_init_platform: Initializing device tree\n");
DTInit(PE_state.deviceTreeHead);
PE_early_puts("PE_init_platform: Calling pe_identify_machine\n");
pe_identify_machine(NULL);
}
else
{
kprintf("PE_init_platform: It sure is great to get out of that bag.\n");
PE_init_SocSupport();
pe_arm_init_interrupts(NULL);
}
}
void PE_init_SocSupport_stub(void)
{
PE_early_puts("PE_init_SocSupport: Initializing for ARM RealView PB-A8\n");
PE_init_SocSupport_realview();
}
void PE_init_SocSupport_stub(void)
{
PE_early_puts("PE_init_SocSupport: Initializing for S5L8900X\n");
PE_init_SocSupport_S5L8900X();
}
void PE_init_SocSupport_stub(void)
{
PE_early_puts("PE_init_SocSupport: Initializing for RASPBERRYPI\n");
PE_init_SocSupport_raspberrypi();
}
/**
* 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);
}
/**
* PE_init_platform
*
* Initialize the platform expert for ARM.
*/
void PE_init_platform(boolean_t vm_initialized, void * _args)
{
boot_args *args = (boot_args *)_args;
if (PE_state.initialized == FALSE) {
PE_early_puts("PE_init_platform: My name is Macintosh.\n");
PE_early_puts("PE_init_platform: Initializing for the first time.\n");
PE_state.initialized = TRUE;
PE_state.bootArgs = _args;
PE_state.deviceTreeHead = args->deviceTreeP;
PE_state.video.v_baseAddr = args->Video.v_baseAddr;
PE_state.video.v_rowBytes = args->Video.v_rowBytes;
PE_state.video.v_width = args->Video.v_width;
PE_state.video.v_height = args->Video.v_height;
PE_state.video.v_depth = args->Video.v_depth;
PE_state.video.v_display = args->Video.v_display;
strcpy(PE_state.video.v_pixelFormat, "PPPPPPPP");
}
if (!vm_initialized)
{
/* Initialize the device tree crap. */
PE_early_puts("PE_init_platform: Initializing device tree\n");
DTInit(PE_state.deviceTreeHead);
PE_early_puts("PE_init_platform: Calling pe_identify_machine\n");
pe_identify_machine(NULL);
}
else
{
DTEntry entry;
char* fversion, map;
unsigned int size;
pe_initialized = 1;
kprintf("PE_init_platform: It sure is great to get out of that bag.\n");
PE_init_SocSupport();
/* Reset kputc. */
PE_kputc = gPESocDispatch.uart_putc;
/* XXX: Real iOS kernel does iBoot/debug-enabled init after the DTInit call. */
if( kSuccess == DTLookupEntry(NULL, "/chosen", &entry)) {
/* What's the iBoot version on this bad boy? */
if( kSuccess == DTGetProperty(entry, "firmware-version", (void **) &fversion, &size)) {
if(fversion && (strlen(fversion) <= 32)) {
ovbcopy((void*)fversion, (void*)firmware_version, strlen(fversion));
}
}
/* Is the SoC debug-enabled? */
if( kSuccess == DTGetProperty(entry, "debug-enabled", (void **) &map, &size)) {
debug_enabled = 1;
}
}
pe_arm_init_interrupts(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) ;
}
void PE_init_SocSupport(void)
{
PE_early_puts("PE_init_SocSupport: initializing SoC dispatch\n");
PE_init_SocSupport_stub();
return;
}
void PE_init_SocSupport_stub(void)
{
PE_early_puts("PE_init_SocSupport: Initializing for SUN4I\n");
PE_init_SocSupport_sun4i();
}