static status_t
vmi_init_private(
vmi_instance_t *vmi,
uint32_t flags,
uint64_t id,
const char *name,
vmi_config_t config)
{
uint32_t access_mode = flags & 0x0000FFFF;
uint32_t init_mode = flags & 0x00FF0000;
uint32_t config_mode = flags & 0xFF000000;
status_t status = VMI_FAILURE;
/* allocate memory for instance structure */
*vmi = (vmi_instance_t) safe_malloc(sizeof(struct vmi_instance));
memset(*vmi, 0, sizeof(struct vmi_instance));
/* initialize instance struct to default values */
dbprint(VMI_DEBUG_CORE, "LibVMI Version 0.11.0\n"); //TODO change this with each release
/* save the flags and init mode */
(*vmi)->flags = flags;
(*vmi)->init_mode = init_mode;
(*vmi)->config_mode = config_mode;
/* the config hash table is set up later based on mode */
(*vmi)->config = NULL;
/* set page mode to unknown */
(*vmi)->page_mode = VMI_PM_UNKNOWN;
/* setup the caches */
pid_cache_init(*vmi);
sym_cache_init(*vmi);
rva_cache_init(*vmi);
v2p_cache_init(*vmi);
if ( init_mode & VMI_INIT_SHM_SNAPSHOT ) {
#if ENABLE_SHM_SNAPSHOT == 1
v2m_cache_init(*vmi);
#else
errprint("LibVMI wasn't compiled with SHM support!\n");
status = VMI_FAILURE;
goto error_exit;
#endif
}
/* connecting to xen, kvm, file, etc */
if (VMI_FAILURE == set_driver_type(*vmi, access_mode, id, name)) {
goto error_exit;
}
/* driver-specific initilization */
if (VMI_FAILURE == driver_init(*vmi)) {
goto error_exit;
}
dbprint(VMI_DEBUG_CORE, "--completed driver init.\n");
/* resolve the id and name */
if (VMI_FAILURE == set_id_and_name(*vmi, access_mode, id, name)) {
goto error_exit;
}
/* init vmi for specific file/domain through the driver */
if (VMI_FAILURE == driver_init_vmi(*vmi)) {
goto error_exit;
}
/* setup the page offset size */
if (VMI_FAILURE == init_page_offset(*vmi)) {
goto error_exit;
}
/* get the memory size */
if (driver_get_memsize(*vmi, &(*vmi)->allocated_ram_size, &(*vmi)->max_physical_address) == VMI_FAILURE) {
errprint("Failed to get memory size.\n");
goto error_exit;
}
dbprint(VMI_DEBUG_CORE, "**set allocated_ram_size = %"PRIx64", "
"max_physical_address = 0x%"PRIx64"\n",
(*vmi)->allocated_ram_size,
(*vmi)->max_physical_address);
// for file mode we need os-specific heuristics to deduce the architecture
// for live mode, having arch_interface set even in VMI_PARTIAL mode
// allows use of dtb-based translation methods.
if (VMI_FILE != (*vmi)->mode) {
if(VMI_FAILURE == arch_init(*vmi)) {
if (init_mode & VMI_INIT_COMPLETE) {
dbprint(VMI_DEBUG_CORE, "--failed to determine architecture of live vm and INIT_COMPLETE.\n");
goto error_exit;
} else {
dbprint(VMI_DEBUG_CORE, "--failed to determine architecture of live vm and INIT_PARTIAL, continuing.\n");
}
} else {
dbprint(VMI_DEBUG_CORE, "--succesfully completed architecture init.\n");
}
}
/* we check VMI_INIT_COMPLETE first as
VMI_INIT_PARTIAL is not exclusive */
if (init_mode & VMI_INIT_COMPLETE) {
switch((*vmi)->config_mode) {
case VMI_CONFIG_STRING:
/* read and parse the config string */
if(VMI_FAILURE == read_config_string(*vmi, (char*)config)) {
goto error_exit;
}
break;
case VMI_CONFIG_GLOBAL_FILE_ENTRY:
/* read and parse the config file */
if(VMI_FAILURE == read_config_file_entry(*vmi)) {
goto error_exit;
}
break;
case VMI_CONFIG_GHASHTABLE:
/* read and parse the ghashtable */
if (!config) {
goto error_exit;
}
(*vmi)->config = (GHashTable*)config;
break;
case VMI_CONFIG_NONE:
default:
/* init_complete requires configuration
falling back to VMI_CONFIG_GLOBAL_FILE_ENTRY is unsafe here
as the config pointer is probably NULL */
goto error_exit;
}
if(VMI_FAILURE == set_os_type_from_config(*vmi)) {
dbprint(VMI_DEBUG_CORE, "--failed to determine os type from config\n");
goto error_exit;
}
/* setup OS specific stuff */
switch ( (*vmi)->os_type )
{
#ifdef ENABLE_LINUX
case VMI_OS_LINUX:
if(VMI_FAILURE == linux_init(*vmi)) {
goto error_exit;
}
break;
#endif
#ifdef ENABLE_WINDOWS
case VMI_OS_WINDOWS:
if(VMI_FAILURE == windows_init(*vmi)) {
goto error_exit;
}
break;
#endif
default:
goto error_exit;
}
status = VMI_SUCCESS;
} else if (init_mode & VMI_INIT_PARTIAL) {
status = VMI_SUCCESS;
} else {
errprint("Need to specify either VMI_INIT_PARTIAL or VMI_INIT_COMPLETE.\n");
goto error_exit;
}
if(init_mode & VMI_INIT_EVENTS) {
/* Enable event handlers */
events_init(*vmi);
}
error_exit:
return status;
}
void main(void)
{
/* Start the ball rolling. */
struct boot_image *ip; /* boot image pointer */
register struct proc *rp; /* process pointer */
register struct priv *sp; /* privilege structure pointer */
register int i, j;
int hdrindex; /* index to array of a.out headers */
phys_clicks text_base;
vir_clicks text_clicks, data_clicks, st_clicks;
reg_t ktsb; /* kernel task stack base */
struct exec *e_hdr = 0; /* for a copy of an a.out header */
/* Global value to test segment sanity. */
magictest = MAGICTEST;
/* Clear the process table. Anounce each slot as empty and set up mappings
* for proc_addr() and proc_nr() macros. Do the same for the table with
* privilege structures for the system processes.
*/
for (rp = BEG_PROC_ADDR, i = -NR_TASKS; rp < END_PROC_ADDR; ++rp, ++i) {
rp->p_rts_flags = RTS_SLOT_FREE; /* initialize free slot */
#ifdef CONFIG_DEBUG_KERNEL_SCHED_CHECK
rp->p_magic = PMAGIC;
#endif
rp->p_nr = i; /* proc number from ptr */
rp->p_endpoint = _ENDPOINT(0, rp->p_nr); /* generation no. 0 */
}
for (sp = BEG_PRIV_ADDR, i = 0; sp < END_PRIV_ADDR; ++sp, ++i) {
sp->s_proc_nr = ENDPT_NONE; /* initialize as free */
sp->s_id = i; /* priv structure index */
ppriv_addr[i] = sp; /* priv ptr from number */
}
/* Set up proc table entries for processes in boot image. The stacks of the
* kernel tasks are initialized to an array in data space. The stacks
* of the servers have been added to the data segment by the monitor, so
* the stack pointer is set to the end of the data segment. All the
* processes are in low memory on the 8086. On the 386 only the kernel
* is in low memory, the rest is loaded in extended memory.
*/
/* Task stacks. */
ktsb = (reg_t) t_stack;
for (i=0; i < NR_BOOT_PROCS; ++i) {
int schedulable_proc, proc_nr;
int ipc_to_m, kcalls;
ip = &image[i]; /* process' attributes */
rp = proc_addr(ip->proc_nr); /* get process pointer */
ip->endpoint = rp->p_endpoint; /* ipc endpoint */
rp->p_max_priority = ip->priority; /* max scheduling priority */
rp->p_priority = ip->priority; /* current priority */
rp->p_quantum_size = ip->quantum; /* quantum size in ticks */
rp->p_ticks_left = ip->quantum; /* current credit */
strncpy(rp->p_name, ip->proc_name, P_NAME_LEN); /* set process name */
/* See if this process is immediately schedulable.
* In that case, set its privileges now and allow it to run.
* Only kernel tasks and the root system process get to run immediately.
* All the other system processes are inhibited from running by the
* RTS_NO_PRIV flag. They can only be scheduled once the root system
* process has set their privileges.
*/
proc_nr = proc_nr(rp);
schedulable_proc = (iskerneln(proc_nr) || isrootsysn(proc_nr));
if(schedulable_proc) {
/* Assign privilege structure. Force a static privilege id. */
(void) get_priv(rp, static_priv_id(proc_nr));
/* Priviliges for kernel tasks. */
if(iskerneln(proc_nr)) {
/* Privilege flags. */
priv(rp)->s_flags = (proc_nr == IDLE ? IDL_F : TSK_F);
/* Allowed traps. */
priv(rp)->s_trap_mask = (proc_nr == CLOCK
|| proc_nr == SYSTEM ? CSK_T : TSK_T);
ipc_to_m = TSK_M; /* allowed targets */
kcalls = TSK_KC; /* allowed kernel calls */
} else if(isrootsysn(proc_nr)) {
/* Priviliges for the root system process. */
priv(rp)->s_flags= RSYS_F; /* privilege flags */
priv(rp)->s_trap_mask= RSYS_T; /* allowed traps */
ipc_to_m = RSYS_M; /* allowed targets */
kcalls = RSYS_KC; /* allowed kernel calls */
}
/* Fill in target mask. */
for (j=0; j < NR_SYS_PROCS; j++) {
if (ipc_to_m & (1 << j))
set_sendto_bit(rp, j);
else
unset_sendto_bit(rp, j);
}
/* Fill in kernel call mask. */
for(j = 0; j < CALL_MASK_SIZE; j++) {
priv(rp)->s_k_call_mask[j] = (kcalls == NO_C ? 0 : (~0));
}
} else {
/*Don't let the process run for now. */
RTS_SET(rp, RTS_NO_PRIV);
}
if (iskerneln(proc_nr)) { /* part of the kernel? */
if (ip->stksize > 0) { /* HARDWARE stack size is 0 */
rp->p_priv->s_stack_guard = (reg_t *) ktsb;
*rp->p_priv->s_stack_guard = STACK_GUARD;
}
ktsb += ip->stksize; /* point to high end of stack */
rp->p_reg.sp = ktsb; /* this task's initial stack ptr */
hdrindex = 0; /* all use the first a.out header */
} else {
hdrindex = 1 + i-NR_TASKS; /* system/user processes */
}
/* Architecture-specific way to find out aout header of this
* boot process.
*/
e_hdr = arch_get_aout_header(hdrindex);
/* Convert addresses to clicks and build process memory map */
text_base = e_hdr->a_syms >> CLICK_SHIFT;
st_clicks= (e_hdr->a_total + CLICK_SIZE-1) >> CLICK_SHIFT;
data_clicks = (e_hdr->a_text + e_hdr->a_data + e_hdr->a_bss + CLICK_SIZE-1) >> CLICK_SHIFT;
text_clicks = 0;
rp->p_memmap[T].mem_phys = text_base;
rp->p_memmap[T].mem_len = text_clicks;
rp->p_memmap[D].mem_phys = text_base + text_clicks;
rp->p_memmap[D].mem_len = data_clicks;
rp->p_memmap[S].mem_phys = text_base + text_clicks + st_clicks;
rp->p_memmap[S].mem_vir = st_clicks;
rp->p_memmap[S].mem_len = 0;
/* Patch (override) the non-kernel process' entry points in image table. The
* image table is located in kernel/kernel_syms.c. The kernel processes like
* IDLE, SYSTEM, CLOCK, HARDWARE are not changed because they are part of kernel
* and the entry points are set at compilation time. In case of IDLE or HARDWARE
* the entry point can be ignored becasue they never run (set RTS_PROC_STOP).
*/
if (!iskerneln(proc_nr(rp)))
ip->initial_pc = (task_t*)e_hdr->a_entry;
/* Set initial register values. The processor status word for tasks
* is different from that of other processes because tasks can
* access I/O; this is not allowed to less-privileged processes
*/
rp->p_reg.pc = (reg_t) ip->initial_pc;
rp->p_reg.psw = (iskerneln(proc_nr)) ? INIT_TASK_PSW : INIT_PSW;
/* Initialize the server stack pointer. Take it down one word
* to give crtso.s something to use as "argc","argv" and "envp".
*/
if (isusern(proc_nr)) { /* user-space process? */
rp->p_reg.sp = (rp->p_memmap[S].mem_vir + rp->p_memmap[S].mem_len)
<< CLICK_SHIFT;
rp->p_reg.sp -= 3*sizeof(reg_t);
}
/* scheduling functions depend on proc_ptr pointing somewhere. */
if(!proc_ptr)
proc_ptr = rp;
/* If this process has its own page table, VM will set the
* PT up and manage it. VM will signal the kernel when it has
* done this; until then, don't let it run.
*/
if(ip->flags & PROC_FULLVM)
RTS_SET(rp, RTS_VMINHIBIT);
/* IDLE & HARDWARE task is never put on a run queue as it is
* never ready to run.
*/
if (rp->p_nr == HARDWARE)
RTS_SET(rp, RTS_PROC_STOP);
if (rp->p_nr == IDLE)
RTS_SET(rp, RTS_PROC_STOP);
RTS_UNSET(rp, RTS_SLOT_FREE); /* remove RTS_SLOT_FREE and schedule */
alloc_segments(rp);
} /* for */
/* Architecture-dependent initialization. */
arch_init();
#ifdef CONFIG_DEBUG_KERNEL_STATS_PROFILE
sprofiling = 0; /* we're not profiling until instructed to */
#endif
cprof_procs_no = 0; /* init nr of hash table slots used */
#ifdef CONFIG_IDLE_TSC
idle_tsc = cvu64(0);
#endif
vm_running = 0;
krandom.random_sources = RANDOM_SOURCES;
krandom.random_elements = RANDOM_ELEMENTS;
/* Nucleos is now ready. All boot image processes are on the ready queue.
* Return to the assembly code to start running the current process.
*/
bill_ptr = proc_addr(IDLE); /* it has to point somewhere */
announce(); /* print Nucleos startup banner */
/*
* enable timer interrupts and clock task on the boot CPU
*/
if (boot_cpu_init_timer(system_hz)) {
kernel_panic("FATAL : failed to initialize timer interrupts, "
"cannot continue without any clock source!",
NO_NUM);
}
/* Warnings for sanity checks that take time. These warnings are printed
* so it's a clear warning no full release should be done with them
* enabled.
*/
#ifdef CONFIG_DEBUG_KERNEL_SCHED_CHECK
FIXME("CONFIG_DEBUG_KERNEL_SCHED_CHECK enabled");
#endif
#ifdef CONFIG_DEBUG_KERNEL_VMASSERT
FIXME("CONFIG_DEBUG_KERNEL_VMASSERT enabled");
#endif
#ifdef CONFIG_DEBUG_PROC_CHECK
FIXME("PROC check enabled");
#endif
restart();
}
/* Tries to determine the page mode based on the kpgd found via heuristics */
static status_t
find_page_mode(
vmi_instance_t vmi)
{
status_t ret = VMI_FAILURE;
windows_instance_t windows = vmi->os_data;
uint32_t mask = ~0;
if (!windows) {
errprint("Windows functions not initialized in %s\n", __FUNCTION__);
return VMI_FAILURE;
}
if (!windows->ntoskrnl || !windows->ntoskrnl_va) {
errprint("Windows kernel virtual and physical address required for determining page mode\n");
return VMI_FAILURE;
}
if (!vmi->kpgd) {
errprint("Windows kernel directory table base not set, can't determine page mode\n");
return VMI_FAILURE;
}
dbprint(VMI_DEBUG_MISC, "--trying VMI_PM_LEGACY\n");
vmi->page_mode = VMI_PM_LEGACY;
/* As the size of vmi->kpgd is 64-bit, we mask it to be 32-bit here */
if (VMI_SUCCESS == arch_init(vmi)) {
if (windows->ntoskrnl == vmi_pagetable_lookup(vmi, (vmi->kpgd & mask), windows->ntoskrnl_va)) {
vmi->kpgd &= mask;
goto found_pm;
}
}
dbprint(VMI_DEBUG_MISC, "--trying VMI_PM_PAE\n");
vmi->page_mode = VMI_PM_PAE;
/* As the size of vmi->kpgd is 64-bit, we mask it to be only 32-bit here */
if (VMI_SUCCESS == arch_init(vmi)) {
if (windows->ntoskrnl == vmi_pagetable_lookup(vmi, (vmi->kpgd & mask), windows->ntoskrnl_va)) {
vmi->kpgd &= mask;
goto found_pm;
}
}
dbprint(VMI_DEBUG_MISC, "--trying VMI_PM_IA32E\n");
vmi->page_mode = VMI_PM_IA32E;
if (VMI_SUCCESS == arch_init(vmi)) {
if (windows->ntoskrnl == vmi_pagetable_lookup(vmi, vmi->kpgd, windows->ntoskrnl_va)) {
goto found_pm;
}
}
goto done;
found_pm:
ret = VMI_SUCCESS;
done: return ret;
}
int main(int argc, char *argv[])
{
int r;
struct timespec start, end;
struct fio_lfsr *fl;
int verify = 0;
unsigned int spin = 0;
uint64_t seed = 0;
uint64_t numbers;
uint64_t v_size;
uint64_t i;
void *v = NULL, *v_start;
double total, mean;
arch_init(argv);
/* Read arguments */
switch (argc) {
case 5: if (strncmp(argv[4], "verify", 7) == 0)
verify = 1;
/* fall through */
case 4: spin = atoi(argv[3]);
/* fall through */
case 3: seed = atol(argv[2]);
/* fall through */
case 2: numbers = strtol(argv[1], NULL, 16);
break;
default: usage();
return 1;
}
/* Initialize LFSR */
fl = malloc(sizeof(struct fio_lfsr));
if (!fl) {
perror("malloc");
return 1;
}
r = lfsr_init(fl, numbers, seed, spin);
if (r) {
printf("Initialization failed.\n");
return r;
}
/* Print specs */
printf("LFSR specs\n");
printf("==========================\n");
printf("Size is %u\n", 64 - __builtin_clzl(fl->cached_bit));
printf("Max val is %lu\n", (unsigned long) fl->max_val);
printf("XOR-mask is 0x%lX\n", (unsigned long) fl->xormask);
printf("Seed is %lu\n", (unsigned long) fl->last_val);
printf("Spin is %u\n", fl->spin);
printf("Cycle length is %lu\n", (unsigned long) fl->cycle_length);
/* Create verification table */
if (verify) {
v_size = numbers * sizeof(uint8_t);
v = malloc(v_size);
memset(v, 0, v_size);
printf("\nVerification table is %lf KiB\n", (double)(v_size) / 1024);
}
v_start = v;
/*
* Iterate over a tight loop until we have produced all the requested
* numbers. Verifying the results should introduce some small yet not
* negligible overhead.
*/
fprintf(stderr, "\nTest initiated... ");
fio_gettime(&start, NULL);
while (!lfsr_next(fl, &i)) {
if (verify)
*(uint8_t *)(v + i) += 1;
}
fio_gettime(&end, NULL);
fprintf(stderr, "finished.\n");
/* Check if all expected numbers within range have been calculated */
r = 0;
if (verify) {
fprintf(stderr, "Verifying results... ");
for (i = 0; i < numbers; i++) {
if (*(uint8_t *)(v + i) != 1) {
fprintf(stderr, "failed (%lu = %d).\n",
(unsigned long) i,
*(uint8_t *)(v + i));
r = 1;
break;
}
}
if (!r)
fprintf(stderr, "OK!\n");
}
/* Calculate elapsed time and mean time per number */
total = utime_since(&start, &end);
mean = total / fl->num_vals;
printf("\nTime results ");
if (verify)
printf("(slower due to verification)");
printf("\n==============================\n");
printf("Elapsed: %lf s\n", total / pow(10,6));
printf("Mean: %lf us\n", mean);
free(v_start);
free(fl);
return r;
}
void __noreturn master_init(void)
{
__attribute__ ((aligned(16)))
uint8_t bootstrap_pool[BOOTSTRAP_POOL_SIZE];
jump_handlers_apply();
kputs("KERN: We are in high address.\n");
arch_init();
/*
* Page allocator requires arbitrary size allocation to allocate
* struct pages, while arbitrary size allocation depends on
* page allocator to actually give out memory.
*
* We break such circular dependency by
* (1) bootstrap a small virtual memory allocator which works on the
* stack.
* (2) initialize a page allocator which works on the bootstrap
* allocator obtained in (1).
* (3) initialize a real virtual memory allocator which depend
* on (2).
* (4) make the page allocator depend on (3) instead.
*
* TODO: move the following piece of code to kern/mm
*/
simple_allocator_bootstrap(bootstrap_pool, BOOTSTRAP_POOL_SIZE);
kputs("KERN: Simple allocator bootstrapping.\n");
page_allocator_init();
kputs("KERN: Page allocator initialized.\n");
add_memory_pages();
kputs("KERN: Pages added.\n");
kprintf("KERN: Free memory: 0x%p\n", (size_t)get_free_memory());
struct simple_allocator old;
get_simple_allocator(&old);
simple_allocator_init();
kputs("KERN: Simple allocator initialized.\n");
page_allocator_move(&old);
kputs("KERN: Page allocator moved.\n");
trap_init();
kputs("KERN: Traps initialized.\n");
/* temporary test */
extern void trap_test(void);
trap_test();
kputs("KERN: Traps test passed.\n");
/* do early initcalls, one by one */
do_early_initcalls();
mm_init();
kputs("KERN: Memory management component initialized.\n");
extern void mm_test(void);
mm_test();
/* allocate per-cpu context and kworker */
// proc_init();
/* do initcalls, one by one */
do_initcalls();
/* temporary tests */
struct allocator_cache cache = {
.size = 1024,
.align = 1024,
.flags = 0,
.create_obj = NULL,
.destroy_obj = NULL
};
cache_create(&cache);
void *a, *b, *c;
a = cache_alloc(&cache);
kprintf("DEBUG: a = 0x%08x\n", a);
b = cache_alloc(&cache);
kprintf("DEBUG: b = 0x%08x\n", b);
c = cache_alloc(&cache);
kprintf("DEBUG: c = 0x%08x\n", c);
cache_free(&cache, a);
cache_free(&cache, b);
cache_free(&cache, c);
a = cache_alloc(&cache);
kprintf("DEBUG: a = 0x%08x\n", a);
cache_free(&cache, a);
int ret = cache_destroy(&cache);
kprintf("DEBUG: cache_destroy returned %d.\n", ret);
cache_create(&cache);
a = cache_alloc(&cache);
kprintf("DEBUG: a = 0x%08x\n", a);
/* startup smp */
/*
* do initcalls, one by one.
* They may fork or sleep or reschedule.
* In case any initcalls issue a fork, there MUST be EXACTLY one return
* from each initcall.
*/
/* initialize or cleanup namespace */
panic("Test done, all is well.\n");
}
void __noreturn slave_init(void)
{
panic("Unimplemented routine called.");
}
/*===========================================================================*
* cstart *
*===========================================================================*/
void cstart()
{
/* Perform system initializations prior to calling main(). Most settings are
* determined with help of the environment strings passed by MINIX' loader.
*/
register char *value; /* value in key=value pair */
int h;
/* low-level initialization */
prot_init();
/* determine verbosity */
if ((value = env_get(VERBOSEBOOTVARNAME)))
verboseboot = atoi(value);
/* Get clock tick frequency. */
value = env_get("hz");
if(value)
system_hz = atoi(value);
if(!value || system_hz < 2 || system_hz > 50000) /* sanity check */
system_hz = DEFAULT_HZ;
DEBUGEXTRA(("cstart\n"));
/* Record miscellaneous information for user-space servers. */
kinfo.nr_procs = NR_PROCS;
kinfo.nr_tasks = NR_TASKS;
strlcpy(kinfo.release, OS_RELEASE, sizeof(kinfo.release));
strlcpy(kinfo.version, OS_VERSION, sizeof(kinfo.version));
/* Load average data initialization. */
kloadinfo.proc_last_slot = 0;
for(h = 0; h < _LOAD_HISTORY; h++)
kloadinfo.proc_load_history[h] = 0;
#ifdef USE_APIC
value = env_get("no_apic");
if(value)
config_no_apic = atoi(value);
else
config_no_apic = 1;
value = env_get("apic_timer_x");
if(value)
config_apic_timer_x = atoi(value);
else
config_apic_timer_x = 1;
#endif
#ifdef USE_WATCHDOG
value = env_get("watchdog");
if (value)
watchdog_enabled = atoi(value);
#endif
#ifdef CONFIG_SMP
if (config_no_apic)
config_no_smp = 1;
value = env_get("no_smp");
if(value)
config_no_smp = atoi(value);
else
config_no_smp = 0;
#endif
DEBUGEXTRA(("intr_init(0)\n"));
intr_init(0);
arch_init();
}
static status_t linux_filemode_init(vmi_instance_t vmi)
{
status_t rc;
addr_t swapper_pg_dir = 0, init_level4_pgt = 0;
addr_t boundary = 0, phys_start = 0, virt_start = 0;
switch (vmi->page_mode)
{
case VMI_PM_AARCH64:
case VMI_PM_IA32E:
linux_symbol_to_address(vmi, "phys_startup_64", NULL, &phys_start);
linux_symbol_to_address(vmi, "startup_64", NULL, &virt_start);
break;
case VMI_PM_AARCH32:
case VMI_PM_LEGACY:
case VMI_PM_PAE:
linux_symbol_to_address(vmi, "phys_startup_32", NULL, &phys_start);
linux_symbol_to_address(vmi, "startup_32", NULL, &virt_start);
break;
case VMI_PM_UNKNOWN:
linux_symbol_to_address(vmi, "phys_startup_64", NULL, &phys_start);
linux_symbol_to_address(vmi, "startup_64", NULL, &virt_start);
if (phys_start && virt_start) break;
phys_start = virt_start = 0;
linux_symbol_to_address(vmi, "phys_startup_32", NULL, &phys_start);
linux_symbol_to_address(vmi, "startup_32", NULL, &virt_start);
break;
}
virt_start = canonical_addr(virt_start);
if(phys_start && virt_start && phys_start < virt_start) {
boundary = virt_start - phys_start;
dbprint(VMI_DEBUG_MISC, "--got kernel boundary (0x%.16"PRIx64").\n", boundary);
}
rc = linux_symbol_to_address(vmi, "swapper_pg_dir", NULL, &swapper_pg_dir);
if (VMI_SUCCESS == rc) {
dbprint(VMI_DEBUG_MISC, "--got vaddr for swapper_pg_dir (0x%.16"PRIx64").\n",
swapper_pg_dir);
swapper_pg_dir = canonical_addr(swapper_pg_dir);
/* We don't know if VMI_PM_LEGACY, VMI_PM_PAE or VMI_PM_AARCH32 yet
* so we do some heuristics below. */
if (boundary)
{
rc = linux_filemode_32bit_init(vmi, swapper_pg_dir, boundary,
phys_start, virt_start);
if (VMI_SUCCESS == rc)
return rc;
}
/*
* So we have a swapper but don't know the physical page of it.
* We will make some educated guesses now.
*/
boundary = 0xC0000000;
dbprint(VMI_DEBUG_MISC, "--trying boundary 0x%.16"PRIx64".\n",
boundary);
rc = linux_filemode_32bit_init(vmi, swapper_pg_dir, boundary,
swapper_pg_dir-boundary, swapper_pg_dir);
if (VMI_SUCCESS == rc)
{
return rc;
}
boundary = 0x80000000;
dbprint(VMI_DEBUG_MISC, "--trying boundary 0x%.16"PRIx64".\n",
boundary);
rc = linux_filemode_32bit_init(vmi, swapper_pg_dir, boundary,
swapper_pg_dir-boundary, swapper_pg_dir);
if (VMI_SUCCESS == rc)
{
return rc;
}
boundary = 0x40000000;
dbprint(VMI_DEBUG_MISC, "--trying boundary 0x%.16"PRIx64".\n",
boundary);
rc = linux_filemode_32bit_init(vmi, swapper_pg_dir, boundary,
swapper_pg_dir-boundary, swapper_pg_dir);
if (VMI_SUCCESS == rc)
{
return rc;
}
return VMI_FAILURE;
}
rc = linux_symbol_to_address(vmi, "init_level4_pgt", NULL, &init_level4_pgt);
if (rc == VMI_SUCCESS) {
dbprint(VMI_DEBUG_MISC, "--got vaddr for init_level4_pgt (0x%.16"PRIx64").\n",
init_level4_pgt);
init_level4_pgt = canonical_addr(init_level4_pgt);
if (boundary) {
vmi->page_mode = VMI_PM_IA32E;
if (VMI_SUCCESS == arch_init(vmi)) {
if (phys_start == vmi_pagetable_lookup(vmi, init_level4_pgt - boundary, virt_start)) {
vmi->kpgd = init_level4_pgt - boundary;
return VMI_SUCCESS;
}
}
}
}
return VMI_FAILURE;
}
/*
* INITIAL C ENTRY POINT.
*/
void start_kernel(start_info_t *si)
{
static char hello[] = "Bootstrapping...\n";
(void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(hello), hello);
setup_xen_features();
pvh_early_init();
arch_init(si);
trap_init();
/* print out some useful information */
printk("Xen Minimal OS!\n");
printk(" start_info: %p(VA)\n", si);
printk(" nr_pages: 0x%lx\n", si->nr_pages);
printk(" shared_inf: 0x%08lx(MA)\n", si->shared_info);
printk(" pt_base: %p(VA)\n", (void *)si->pt_base);
printk("nr_pt_frames: 0x%lx\n", si->nr_pt_frames);
printk(" mfn_list: %p(VA)\n", (void *)si->mfn_list);
printk(" mod_start: 0x%lx(VA)\n", si->mod_start);
printk(" mod_len: %lu\n", si->mod_len);
printk(" flags: 0x%x\n", (unsigned int)si->flags);
printk(" cmd_line: %s\n",
si->cmd_line ? (const char *)si->cmd_line : "NULL");
/* Set up events. */
init_events();
/* ENABLE EVENT DELIVERY. This is disabled at start of day. */
__sti();
arch_print_info();
/* Init memory management. */
init_mm();
/* Init time and timers. */
init_time();
/* Init the console driver. */
init_console();
/* Init grant tables */
init_gnttab();
/* Init scheduler. */
init_sched();
/* Init XenBus */
init_xenbus();
#ifdef CONFIG_XENBUS
/* Init shutdown thread */
init_shutdown(si);
#endif
/* Call (possibly overridden) app_main() */
app_main(&start_info);
/* Everything initialised, start idle thread */
run_idle_thread();
}
void kernel_init(multiboot_info_t *mboot_info)
{
extern char __start_bss[], __stop_bss[];
memset(__start_bss, 0, __stop_bss - __start_bss);
/* mboot_info is a physical address. while some arches currently have the
* lower memory mapped, everyone should have it mapped at kernbase by now.
* also, it might be in 'free' memory, so once we start dynamically using
* memory, we may clobber it. */
multiboot_kaddr = (struct multiboot_info*)((physaddr_t)mboot_info
+ KERNBASE);
extract_multiboot_cmdline(multiboot_kaddr);
cons_init();
print_cpuinfo();
printk("Boot Command Line: '%s'\n", boot_cmdline);
exception_table_init();
cache_init(); // Determine systems's cache properties
pmem_init(multiboot_kaddr);
kmem_cache_init(); // Sets up slab allocator
kmalloc_init();
hashtable_init();
radix_init();
cache_color_alloc_init(); // Inits data structs
colored_page_alloc_init(); // Allocates colors for agnostic processes
acpiinit();
topology_init();
kthread_init(); /* might need to tweak when this happens */
vmr_init();
file_init();
page_check();
idt_init();
kernel_msg_init();
timer_init();
vfs_init();
devfs_init();
train_timing();
kb_buf_init(&cons_buf);
arch_init();
block_init();
enable_irq();
run_linker_funcs();
/* reset/init devtab after linker funcs 3 and 4. these run NIC and medium
* pre-inits, which need to happen before devether. */
devtabreset();
devtabinit();
#ifdef CONFIG_EXT2FS
mount_fs(&ext2_fs_type, "/dev/ramdisk", "/mnt", 0);
#endif /* CONFIG_EXT2FS */
#ifdef CONFIG_ETH_AUDIO
eth_audio_init();
#endif /* CONFIG_ETH_AUDIO */
get_coreboot_info(&sysinfo);
booting = 0;
#ifdef CONFIG_RUN_INIT_SCRIPT
if (run_init_script()) {
printk("Configured to run init script, but no script specified!\n");
manager();
}
#else
manager();
#endif
}
int
main(int argc, char *argv[], char *envp[])
{
#ifdef LISP_FEATURE_WIN32
/* Exception handling support structure. Evil Win32 hack. */
struct lisp_exception_frame exception_frame;
#endif
/* the name of the core file we're to execute. Note that this is
* a malloc'ed string which should be freed eventually. */
char *core = 0;
char **sbcl_argv = 0;
os_vm_offset_t embedded_core_offset = 0;
char *runtime_path = 0;
/* other command line options */
boolean noinform = 0;
boolean end_runtime_options = 0;
boolean disable_lossage_handler_p = 0;
lispobj initial_function;
const char *sbcl_home = getenv("SBCL_HOME");
interrupt_init();
block_blockable_signals(0, 0);
setlocale(LC_ALL, "");
runtime_options = NULL;
/* Check early to see if this executable has an embedded core,
* which also populates runtime_options if the core has runtime
* options */
runtime_path = os_get_runtime_executable_path();
if (runtime_path) {
os_vm_offset_t offset = search_for_embedded_core(runtime_path);
if (offset != -1) {
embedded_core_offset = offset;
core = runtime_path;
} else {
free(runtime_path);
}
}
/* Parse our part of the command line (aka "runtime options"),
* stripping out those options that we handle. */
if (runtime_options != NULL) {
dynamic_space_size = runtime_options->dynamic_space_size;
thread_control_stack_size = runtime_options->thread_control_stack_size;
sbcl_argv = argv;
} else {
int argi = 1;
runtime_options = successful_malloc(sizeof(struct runtime_options));
while (argi < argc) {
char *arg = argv[argi];
if (0 == strcmp(arg, "--script")) {
/* This is both a runtime and a toplevel option. As a
* runtime option, it is equivalent to --noinform.
* This exits, and does not increment argi, so that
* TOPLEVEL-INIT sees the option. */
noinform = 1;
end_runtime_options = 1;
disable_lossage_handler_p = 1;
lose_on_corruption_p = 1;
break;
} else if (0 == strcmp(arg, "--noinform")) {
noinform = 1;
++argi;
} else if (0 == strcmp(arg, "--core")) {
if (core) {
lose("more than one core file specified\n");
} else {
++argi;
if (argi >= argc) {
lose("missing filename for --core argument\n");
}
core = copied_string(argv[argi]);
++argi;
}
} else if (0 == strcmp(arg, "--help")) {
/* I think this is the (or a) usual convention: upon
* seeing "--help" we immediately print our help
* string and exit, ignoring everything else. */
print_help();
exit(0);
} else if (0 == strcmp(arg, "--version")) {
/* As in "--help" case, I think this is expected. */
print_version();
exit(0);
} else if (0 == strcmp(arg, "--dynamic-space-size")) {
++argi;
if (argi >= argc)
lose("missing argument for --dynamic-space-size");
errno = 0;
dynamic_space_size = strtol(argv[argi++], 0, 0) << 20;
if (errno)
lose("argument to --dynamic-space-size is not a number");
# ifdef MAX_DYNAMIC_SPACE_END
if (!((DYNAMIC_SPACE_START <
DYNAMIC_SPACE_START+dynamic_space_size) &&
(DYNAMIC_SPACE_START+dynamic_space_size <=
MAX_DYNAMIC_SPACE_END)))
lose("specified --dynamic-space-size too large");
# endif
} else if (0 == strcmp(arg, "--control-stack-size")) {
++argi;
if (argi >= argc)
lose("missing argument for --control-stack-size");
errno = 0;
thread_control_stack_size = strtol(argv[argi++], 0, 0) << 20;
if (errno)
lose("argument to --control-stack-size is not a number");
} else if (0 == strcmp(arg, "--debug-environment")) {
int n = 0;
printf("; Commandline arguments:\n");
while (n < argc) {
printf("; %2d: \"%s\"\n", n, argv[n]);
++n;
}
n = 0;
printf(";\n; Environment:\n");
while (ENVIRON[n]) {
printf("; %2d: \"%s\"\n", n, ENVIRON[n]);
++n;
}
++argi;
} else if (0 == strcmp(arg, "--disable-ldb")) {
disable_lossage_handler_p = 1;
++argi;
} else if (0 == strcmp(arg, "--lose-on-corruption")) {
lose_on_corruption_p = 1;
++argi;
} else if (0 == strcmp(arg, "--end-runtime-options")) {
end_runtime_options = 1;
++argi;
break;
} else {
/* This option was unrecognized as a runtime option,
* so it must be a toplevel option or a user option,
* so we must be past the end of the runtime option
* section. */
break;
}
}
/* This is where we strip out those options that we handle. We
* also take this opportunity to make sure that we don't find
* an out-of-place "--end-runtime-options" option. */
{
char *argi0 = argv[argi];
int argj = 1;
/* (argc - argi) for the arguments, one for the binary,
and one for the terminating NULL. */
sbcl_argv = successful_malloc((2 + argc - argi) * sizeof(char *));
sbcl_argv[0] = argv[0];
while (argi < argc) {
char *arg = argv[argi++];
/* If we encounter --end-runtime-options for the first
* time after the point where we had to give up on
* runtime options, then the point where we had to
* give up on runtime options must've been a user
* error. */
if (!end_runtime_options &&
0 == strcmp(arg, "--end-runtime-options")) {
lose("bad runtime option \"%s\"\n", argi0);
}
sbcl_argv[argj++] = arg;
}
sbcl_argv[argj] = 0;
}
}
/* Align down to multiple of page_table page size, and to the appropriate
* stack alignment. */
dynamic_space_size &= ~(PAGE_BYTES-1);
thread_control_stack_size &= ~(CONTROL_STACK_ALIGNMENT_BYTES-1);
/* Preserve the runtime options for possible future core saving */
runtime_options->dynamic_space_size = dynamic_space_size;
runtime_options->thread_control_stack_size = thread_control_stack_size;
/* KLUDGE: os_vm_page_size is set by os_init(), and on some
* systems (e.g. Alpha) arch_init() needs need os_vm_page_size, so
* it must follow os_init(). -- WHN 2000-01-26 */
os_init(argv, envp);
arch_init();
gc_init();
validate();
/* If no core file was specified, look for one. */
if (!core) {
core = search_for_core();
}
/* Make sure that SBCL_HOME is set and not the empty string,
unless loading an embedded core. */
if (!(sbcl_home && *sbcl_home) && embedded_core_offset == 0) {
char *envstring, *copied_core, *dir;
char *stem = "SBCL_HOME=";
copied_core = copied_string(core);
dir = dirname(copied_core);
envstring = (char *) calloc(strlen(stem) +
strlen(dir) +
1,
sizeof(char));
sprintf(envstring, "%s%s", stem, dir);
putenv(envstring);
free(copied_core);
}
if (!noinform && embedded_core_offset == 0) {
print_banner();
fflush(stdout);
}
#if defined(SVR4) || defined(__linux__)
tzset();
#endif
define_var("nil", NIL, 1);
define_var("t", T, 1);
if (!disable_lossage_handler_p)
enable_lossage_handler();
globals_init();
initial_function = load_core_file(core, embedded_core_offset);
if (initial_function == NIL) {
lose("couldn't find initial function\n");
}
#ifdef LISP_FEATURE_HPUX
/* -1 = CLOSURE_FUN_OFFSET, 23 = SIMPLE_FUN_CODE_OFFSET, we are
* not in LANGUAGE_ASSEMBLY so we cant reach them. */
return_from_lisp_stub = (void *) ((char *)*((unsigned long *)
((char *)initial_function + -1)) + 23);
#endif
gc_initialize_pointers();
arch_install_interrupt_handlers();
#ifndef LISP_FEATURE_WIN32
os_install_interrupt_handlers();
#else
/* wos_install_interrupt_handlers(handler); */
wos_install_interrupt_handlers(&exception_frame);
#endif
/* Pass core filename and the processed argv into Lisp. They'll
* need to be processed further there, to do locale conversion.
*/
core_string = core;
posix_argv = sbcl_argv;
FSHOW((stderr, "/funcalling initial_function=0x%lx\n",
(unsigned long)initial_function));
#ifdef LISP_FEATURE_WIN32
fprintf(stderr, "\n\
This is experimental prerelease support for the Windows platform: use\n\
at your own risk. \"Your Kitten of Death awaits!\"\n");
fflush(stdout);
fflush(stderr);
#endif
create_initial_thread(initial_function);
lose("CATS. CATS ARE NICE.\n");
return 0;
}
/**
* Local main function which calls the application Main
* app_main will be the entry point to application and
* must return.
**/
static void local_main(void * arg)
{
arch_init();
app_main(arg);
}
/*===========================================================================*
* main *
*===========================================================================*/
PUBLIC void main()
{
/* Start the ball rolling. */
struct boot_image *ip; /* boot image pointer */
register struct proc *rp; /* process pointer */
register struct priv *sp; /* privilege structure pointer */
register int i, j, s;
int hdrindex; /* index to array of a.out headers */
phys_clicks text_base;
vir_clicks text_clicks, data_clicks, st_clicks;
reg_t ktsb; /* kernel task stack base */
struct exec e_hdr; /* for a copy of an a.out header */
/* Architecture-dependent initialization. */
arch_init();
/* Global value to test segment sanity. */
magictest = MAGICTEST;
/* Clear the process table. Anounce each slot as empty and set up mappings
* for proc_addr() and proc_nr() macros. Do the same for the table with
* privilege structures for the system processes.
*/
for (rp = BEG_PROC_ADDR, i = -NR_TASKS; rp < END_PROC_ADDR; ++rp, ++i) {
rp->p_rts_flags = SLOT_FREE; /* initialize free slot */
#if DEBUG_SCHED_CHECK
rp->p_magic = PMAGIC;
#endif
rp->p_nr = i; /* proc number from ptr */
rp->p_endpoint = _ENDPOINT(0, rp->p_nr); /* generation no. 0 */
}
for (sp = BEG_PRIV_ADDR, i = 0; sp < END_PRIV_ADDR; ++sp, ++i) {
sp->s_proc_nr = NONE; /* initialize as free */
sp->s_id = i; /* priv structure index */
ppriv_addr[i] = sp; /* priv ptr from number */
}
/* Set up proc table entries for processes in boot image. The stacks of the
* kernel tasks are initialized to an array in data space. The stacks
* of the servers have been added to the data segment by the monitor, so
* the stack pointer is set to the end of the data segment. All the
* processes are in low memory on the 8086. On the 386 only the kernel
* is in low memory, the rest is loaded in extended memory.
*/
/* Task stacks. */
ktsb = (reg_t) t_stack;
for (i=0; i < NR_BOOT_PROCS; ++i) {
int ci;
bitchunk_t fv;
ip = &image[i]; /* process' attributes */
rp = proc_addr(ip->proc_nr); /* get process pointer */
ip->endpoint = rp->p_endpoint; /* ipc endpoint */
rp->p_max_priority = ip->priority; /* max scheduling priority */
rp->p_priority = ip->priority; /* current priority */
rp->p_quantum_size = ip->quantum; /* quantum size in ticks */
rp->p_ticks_left = ip->quantum; /* current credit */
strncpy(rp->p_name, ip->proc_name, P_NAME_LEN); /* set process name */
(void) get_priv(rp, (ip->flags & SYS_PROC)); /* assign structure */
priv(rp)->s_flags = ip->flags; /* process flags */
priv(rp)->s_trap_mask = ip->trap_mask; /* allowed traps */
/* Warn about violations of the boot image table order consistency. */
if (priv_id(rp) != s_nr_to_id(ip->proc_nr) && (ip->flags & SYS_PROC))
kprintf("Warning: boot image table has wrong process order\n");
/* Initialize call mask bitmap from unordered set.
* A single SYS_ALL_CALLS is a special case - it
* means all calls are allowed.
*/
if(ip->nr_k_calls == 1 && ip->k_calls[0] == SYS_ALL_CALLS)
fv = ~0; /* fill call mask */
else
fv = 0; /* clear call mask */
for(ci = 0; ci < CALL_MASK_SIZE; ci++) /* fill or clear call mask */
priv(rp)->s_k_call_mask[ci] = fv;
if(!fv) /* not all full? enter calls bit by bit */
for(ci = 0; ci < ip->nr_k_calls; ci++)
SET_BIT(priv(rp)->s_k_call_mask,
ip->k_calls[ci]-KERNEL_CALL);
for (j = 0; j < NR_SYS_PROCS && j < BITCHUNK_BITS; j++)
if (ip->ipc_to & (1 << j))
set_sendto_bit(rp, j); /* restrict targets */
if (iskerneln(proc_nr(rp))) { /* part of the kernel? */
if (ip->stksize > 0) { /* HARDWARE stack size is 0 */
rp->p_priv->s_stack_guard = (reg_t *) ktsb;
*rp->p_priv->s_stack_guard = STACK_GUARD;
}
ktsb += ip->stksize; /* point to high end of stack */
rp->p_reg.sp = ktsb; /* this task's initial stack ptr */
hdrindex = 0; /* all use the first a.out header */
} else {
hdrindex = 1 + i-NR_TASKS; /* servers, drivers, INIT */
}
/* Architecture-specific way to find out aout header of this
* boot process.
*/
arch_get_aout_headers(hdrindex, &e_hdr);
/* Convert addresses to clicks and build process memory map */
text_base = e_hdr.a_syms >> CLICK_SHIFT;
text_clicks = (e_hdr.a_text + CLICK_SIZE-1) >> CLICK_SHIFT;
data_clicks = (e_hdr.a_data+e_hdr.a_bss + CLICK_SIZE-1) >> CLICK_SHIFT;
st_clicks= (e_hdr.a_total + CLICK_SIZE-1) >> CLICK_SHIFT;
if (!(e_hdr.a_flags & A_SEP))
{
data_clicks= (e_hdr.a_text+e_hdr.a_data+e_hdr.a_bss +
CLICK_SIZE-1) >> CLICK_SHIFT;
text_clicks = 0; /* common I&D */
}
rp->p_memmap[T].mem_phys = text_base;
rp->p_memmap[T].mem_len = text_clicks;
rp->p_memmap[D].mem_phys = text_base + text_clicks;
rp->p_memmap[D].mem_len = data_clicks;
rp->p_memmap[S].mem_phys = text_base + text_clicks + st_clicks;
rp->p_memmap[S].mem_vir = st_clicks;
rp->p_memmap[S].mem_len = 0;
/* Set initial register values. The processor status word for tasks
* is different from that of other processes because tasks can
* access I/O; this is not allowed to less-privileged processes
*/
rp->p_reg.pc = (reg_t) ip->initial_pc;
rp->p_reg.psw = (iskernelp(rp)) ? INIT_TASK_PSW : INIT_PSW;
/* Initialize the server stack pointer. Take it down one word
* to give crtso.s something to use as "argc".
*/
if (isusern(proc_nr(rp))) { /* user-space process? */
rp->p_reg.sp = (rp->p_memmap[S].mem_vir +
rp->p_memmap[S].mem_len) << CLICK_SHIFT;
rp->p_reg.sp -= sizeof(reg_t);
}
/* scheduling functions depend on proc_ptr pointing somewhere. */
if(!proc_ptr) proc_ptr = rp;
/* If this process has its own page table, VM will set the
* PT up and manage it. VM will signal the kernel when it has
* done this; until then, don't let it run.
*/
if(priv(rp)->s_flags & PROC_FULLVM)
RTS_SET(rp, VMINHIBIT);
/* Set ready. The HARDWARE task is never ready. */
if (rp->p_nr == HARDWARE) RTS_SET(rp, PROC_STOP);
RTS_UNSET(rp, SLOT_FREE); /* remove SLOT_FREE and schedule */
alloc_segments(rp);
}