/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("Galactocalypse's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
/* Early initialization. */
ram_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
/* Late phase of initialization. */
vm_bootstrap();
kprintf_bootstrap();
thread_start_cpus();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* dev_bootstrap() attaches the console device. This can be
* remarkably confusing if a bug occurs at this point. So
* don't put new code before dev_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("CS350-036's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
#if OPT_A0
hello();
#endif /* OPT_A0 */
ram_bootstrap();
scheduler_bootstrap();
thread_bootstrap();
vfs_bootstrap();
dev_bootstrap();
#if OPT_A3
vmstats_init();
#endif
vm_bootstrap();
kprintf_bootstrap();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
#if OPT_A3
initSwapOps();
#endif
/*
* Make sure various things aren't screwed up.
*/
assert(sizeof(userptr_t)==sizeof(char *));
assert(sizeof(*(userptr_t)0)==sizeof(char));
}
void platform_init(int argc, char **argv, char **envp, unsigned memsize) {
/* clear BSS section */
bzero(__bss, __ebss - __bss);
setup_kenv(argc, argv, envp);
uart_init();
pcpu_init();
cpu_init();
tlb_init();
intr_init();
pm_bootstrap(memsize);
thread_bootstrap();
kprintf("[startup] Switching to 'kernel-main' thread...\n");
}
/**
* 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);
}
/**
* 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) ;
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
#if OPT_A2
// Not sure if this is the best place to put this, but I'm not
// sure where else we can initialize our process array early enough
proc_array_init();
// Setting this to NULL to start so that boot threads don't increment
// the value
sem_runprogram = NULL;
#endif
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("Put-your-group-name-here's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
/* Early initialization. */
ram_bootstrap();
proc_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
#if OPT_A3
// vm_bootstrap();// already called elsewhere below
#endif
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
/* Late phase of initialization. */
vm_bootstrap();
kprintf_bootstrap();
thread_start_cpus();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
#if OPT_A2
// Now it is safe to let this be accessed
sem_runprogram = sem_create("sem_runprogram", 0);
#endif
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* dev_bootstrap() attaches the console device. This can be
* remarkably confusing if a bug occurs at this point. So
* don't put new code before dev_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
/* remove compiler warning */
//size_t memsize; /* ASST2: get memsize from new vm_bootstrap */
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
kprintf("Group 36 system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
ram_bootstrap();
#if OPT_DUMBVM
vm_bootstrap();
#else
memsize = vm_bootstrap(); /* ASST2: get memsize from new vm_bootstrap */
#endif
scheduler_bootstrap();
pid_bootstrap(); /* ASST1: initialize pid management before threads */
thread_bootstrap();
vfs_bootstrap();
dev_bootstrap();
#if !OPT_DUMBVM /* only initialize swap if not using dumbvm */
swap_bootstrap(memsize); /* ASST2: initialize swap file after devices */
#endif
kprintf_bootstrap();
// DEMKE: ASST1 - initialize user program console I/O
//dumb_consoleIO_bootstrap();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
/*
* Make sure various things aren't screwed up.
*/
assert(sizeof(userptr_t)==sizeof(char *));
assert(sizeof(*(userptr_t)0)==sizeof(char));
}
/*
* Initial boot sequence.
*/
static
void
boot(void)
{
/*
* The order of these is important!
* Don't go changing it without thinking about the consequences.
*
* Among other things, be aware that console output gets
* buffered up at first and does not actually appear until
* mainbus_bootstrap() attaches the console device. This can
* be remarkably confusing if a bug occurs at this point. So
* don't put new code before mainbus_bootstrap if you don't
* absolutely have to.
*
* Also note that the buffer for this is only 1k. If you
* overflow it, the system will crash without printing
* anything at all. You can make it larger though (it's in
* dev/generic/console.c).
*/
kprintf("\n");
kprintf("OS/161 base system version %s\n", BASE_VERSION);
kprintf("%s", harvard_copyright);
kprintf("\n");
// Stupid escape characters
/* kprintf(" ,8\\\n"\
"=DDI~ ,88M\n"\
"`$D888$7~ ,D=8M\n"\
" 8N8...'8. +...7\n"\
" ~+D+...'8, ,N...7\n"\
" ~+N+...+----...7...8`\n"\
" ~~O.............7\n"\
" /.............7\n"\
" 8..88..........7\n"\
" 8##.........88..:\n"\
" .8##...####$.....# ~+',\n"\
" \\I...####$...###8...,+\n"\
" .~~~~,.7##7....##.....7\n"\
" /.......\\-......7....I..+I8DI~..\n"\
" |8........7-.....\\..+$...........O\\\n");*/
/*kprintf(" \\~.___.~7-.......?IZ$??+..........>\n"\
" \\.............D /=?????+....,8`\n"\
" I.............+~IO=?8:+ZDI?=8`\n"\
" /..............7$??+8 \\8/\n"\
" I...............8DZO,\n"\
" I................N8?\n"\
" .D??.......+++....8\n"\
" D?7???I$Z77??????.\n"\
" ,8$DDZ: ``~?NIMMIZ=\n"\
" `~I8?\n");*/
kprintf("PikachuOS's system version %s (%s #%d)\n",
GROUP_VERSION, buildconfig, buildversion);
kprintf("\n");
/* Early initialization. */
ram_bootstrap();
vm_bootstrap();
proc_bootstrap();
thread_bootstrap();
hardclock_bootstrap();
vfs_bootstrap();
kheap_nextgeneration();
/* Probe and initialize devices. Interrupts should come on. */
kprintf("Device probe...\n");
KASSERT(curthread->t_curspl > 0);
mainbus_bootstrap();
KASSERT(curthread->t_curspl == 0);
/* Now do pseudo-devices. */
pseudoconfig();
kprintf("\n");
kheap_nextgeneration();
/* Late phase of initialization. */
kprintf_bootstrap();
thread_start_cpus();
/* Buffer cache */
buffer_bootstrap();
/* Default bootfs - but ignore failure, in case emu0 doesn't exist */
vfs_setbootfs("emu0");
kheap_nextgeneration();
bs_bootstrap();
/*
* Make sure various things aren't screwed up.
*/
COMPILE_ASSERT(sizeof(userptr_t) == sizeof(char *));
COMPILE_ASSERT(sizeof(*(userptr_t)0) == sizeof(char));
}