void arch_init(void)
{
k_stacks = (void*) &k_stacks_start;
assert(!((vir_bytes) k_stacks % K_STACK_SIZE));
#ifndef CONFIG_SMP
/*
* use stack 0 and cpu id 0 on a single processor machine, SMP
* configuration does this in smp_init() for all cpus at once
*/
tss_init(0, get_k_stack_top(0));
#endif
#if !CONFIG_OXPCIE
ser_init();
#endif
#ifdef USE_ACPI
acpi_init();
#endif
#if defined(USE_APIC) && !defined(CONFIG_SMP)
if (config_no_apic) {
BOOT_VERBOSE(printf("APIC disabled, using legacy PIC\n"));
}
else if (!apic_single_cpu_init()) {
BOOT_VERBOSE(printf("APIC not present, using legacy PIC\n"));
}
#endif
/* Reserve some BIOS ranges */
cut_memmap(&kinfo, BIOS_MEM_BEGIN, BIOS_MEM_END);
cut_memmap(&kinfo, BASE_MEM_TOP, UPPER_MEM_END);
}
PUBLIC void arch_init(void)
{
#ifdef USE_APIC
/*
* this is setting kernel segments to cover most of the phys memory. The
* value is high enough to reach local APIC nad IOAPICs before paging is
* turned on.
*/
prot_set_kern_seg_limit(0xfff00000);
reload_ds();
#endif
idt_init();
/* FIXME stupid a.out
* align the stacks in the stack are to the K_STACK_SIZE which is a
* power of 2
*/
k_stacks = (void*) (((vir_bytes)&k_stacks_start + K_STACK_SIZE - 1) &
~(K_STACK_SIZE - 1));
#ifndef CONFIG_SMP
/*
* use stack 0 and cpu id 0 on a single processor machine, SMP
* configuration does this in smp_init() for all cpus at once
*/
tss_init(0, get_k_stack_top(0));
#endif
#if !CONFIG_OXPCIE
ser_init();
#endif
#ifdef USE_ACPI
acpi_init();
#endif
#if defined(USE_APIC) && !defined(CONFIG_SMP)
if (config_no_apic) {
BOOT_VERBOSE(printf("APIC disabled, using legacy PIC\n"));
}
else if (!apic_single_cpu_init()) {
BOOT_VERBOSE(printf("APIC not present, using legacy PIC\n"));
}
#endif
}
