#include <arch/x86/boot/multiboot.h>
+#include <lunaix/block.h>
#include <lunaix/common.h>
+#include <lunaix/fs.h>
+#include <lunaix/fs/twifs.h>
#include <lunaix/lunistd.h>
+#include <lunaix/lxconsole.h>
+#include <lunaix/mm/cake.h>
#include <lunaix/mm/pmm.h>
+#include <lunaix/mm/valloc.h>
#include <lunaix/mm/vmm.h>
#include <lunaix/peripheral/ps2kbd.h>
#include <lunaix/proc.h>
#include <stddef.h>
#include <hal/acpi/acpi.h>
+#include <hal/ahci/ahci.h>
#include <hal/apic.h>
#include <hal/ioapic.h>
+#include <hal/pci.h>
+
+#include <klibc/string.h>
LOG_MODULE("PROC0")
void
lock_reserved_memory();
-// #define ENABLE_USER_MODE
+void
+unlock_reserved_memory();
+
+void
+__do_reserved_memory(int unlock);
+
+#define USE_DEMO
+// #define DEMO_SIGNAL
+// #define DEMO_READDIR
+#define DEMO_IOTEST
+
+extern void
+_pconsole_main();
+
+extern void
+_signal_demo_main();
+
+extern void
+_lxinit_main();
+
+extern void
+_readdir_main();
+
+extern void
+_iotest_main();
+
+void __USER__
+__proc0_usr()
+{
+ pid_t p;
+ if (!fork()) {
+ _pconsole_main();
+ }
+
+ if (!(p = fork())) {
+#ifndef USE_DEMO
+ _exit(0);
+#elif defined DEMO_SIGNAL
+ _signal_demo_main();
+#elif defined DEMO_READDIR
+ _readdir_main();
+#elif defined DEMO_IOTEST
+ _iotest_main();
+#else
+ _lxinit_main();
+#endif
+ }
+
+ waitpid(p, 0, 0);
+
+ while (1) {
+ yield();
+ }
+}
/**
* @brief LunaixOS的零号进程，该进程永远为可执行。
__proc0()
{
init_platform();
-#ifdef ENABLE_USER_MODE
+
+ init_proc_user_space(__current);
+
asm volatile("movw %0, %%ax\n"
"movw %%ax, %%es\n"
"movw %%ax, %%ds\n"
"retf" ::"i"(UDATA_SEG),
"i"(USTACK_TOP & ~0xf),
"i"(UCODE_SEG),
- "r"(&&usr));
-#endif
-usr:
- if (!fork()) {
- asm("jmp _lxinit_main");
- }
-
- while (1) {
- yield();
- }
+ "r"(__proc0_usr)
+ : "eax", "memory");
}
extern uint8_t __kernel_start; /* link/linker.ld */
void
init_platform()
{
- assert_msg(kalloc_init(), "Fail to initialize heap");
-
- size_t hhk_init_pg_count = ((uintptr_t)(&__init_hhk_end)) >> PG_SIZE_BITS;
- kprintf(KINFO "[MM] Releaseing %d pages from 0x0.\n", hhk_init_pg_count);
-
- // Fuck it, I will no longer bother this little 1MiB
- // I just release 4 pages for my APIC & IOAPIC remappings
- for (size_t i = 0; i < 3; i++) {
- vmm_del_mapping(PD_REFERENCED, (void*)(i << PG_SIZE_BITS));
- }
-
// 锁定所有系统预留页（内存映射IO，ACPI之类的），并且进行1:1映射
lock_reserved_memory();
- acpi_init(_k_init_mb_info);
- uintptr_t ioapic_addr = acpi_get_context()->madt.ioapic->ioapic_addr;
- pmm_mark_page_occupied(
- KERNEL_PID, FLOOR(__APIC_BASE_PADDR, PG_SIZE_BITS), 0);
- pmm_mark_page_occupied(KERNEL_PID, FLOOR(ioapic_addr, PG_SIZE_BITS), 0);
-
- vmm_set_mapping(
- PD_REFERENCED, MMIO_APIC, __APIC_BASE_PADDR, PG_PREM_RW, VMAP_NULL);
- vmm_set_mapping(
- PD_REFERENCED, MMIO_IOAPIC, ioapic_addr, PG_PREM_RW, VMAP_NULL);
+ assert_msg(kalloc_init(), "Fail to initialize heap");
+ acpi_init(_k_init_mb_info);
apic_init();
ioapic_init();
timer_init(SYS_TIMER_FREQUENCY_HZ);
clock_init();
ps2_kbd_init();
+ pci_init();
+ block_init();
+ ahci_init();
+ // ahci_list_device();
+ // cake_stats();
syscall_install();
- for (size_t i = 256; i < hhk_init_pg_count; i++) {
- vmm_del_mapping(PD_REFERENCED, (void*)(i << PG_SIZE_BITS));
+ console_start_flushing();
+ console_flush();
+
+ unlock_reserved_memory();
+
+ for (size_t i = 0; i < (uintptr_t)(&__init_hhk_end); i += PG_SIZE) {
+ vmm_del_mapping(PD_REFERENCED, (void*)i);
+ pmm_free_page(KERNEL_PID, (void*)i);
}
}
void
lock_reserved_memory()
+{
+ __do_reserved_memory(0);
+}
+
+void
+unlock_reserved_memory()
+{
+ __do_reserved_memory(1);
+}
+
+void
+__do_reserved_memory(int unlock)
{
multiboot_memory_map_t* mmaps = _k_init_mb_info->mmap_addr;
size_t map_size =
// v_mapping mapping;
for (unsigned int i = 0; i < map_size; i++) {
multiboot_memory_map_t mmap = mmaps[i];
- if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE) {
+ uint8_t* pa = PG_ALIGN(mmap.addr_low);
+ if (mmap.type == MULTIBOOT_MEMORY_AVAILABLE || pa <= MEM_4MB) {
+ // Don't fuck up our kernel code or any free area!
continue;
}
- uint8_t* pa = PG_ALIGN(mmap.addr_low);
size_t pg_num = CEIL(mmap.len_low, PG_SIZE_BITS);
- for (size_t j = 0; j < pg_num; j++) {
- uintptr_t _pa = pa + (j << PG_SIZE_BITS);
- // if (vmm_lookup(_pa, &mapping) && *mapping.pte) {
- // continue;
- // }
- vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_IGNORE);
- pmm_mark_page_occupied(KERNEL_PID, _pa >> 12, 0);
+ size_t j = 0;
+ if (!unlock) {
+ for (; j < pg_num; j++) {
+ uintptr_t _pa = pa + (j << PG_SIZE_BITS);
+ if (_pa >= KERNEL_MM_BASE) {
+ // Don't fuck up our kernel space!
+ break;
+ }
+ vmm_set_mapping(PD_REFERENCED, _pa, _pa, PG_PREM_R, VMAP_NULL);
+ pmm_mark_page_occupied(
+ KERNEL_PID, _pa >> PG_SIZE_BITS, PP_FGLOCKED);
+ }
+ // Save the progress for later unmapping.
+ mmaps[i].len_low = j * PG_SIZE;
+ } else {
+ for (; j < pg_num; j++) {
+ uintptr_t _pa = pa + (j << PG_SIZE_BITS);
+ vmm_del_mapping(PD_REFERENCED, _pa);
+ if (mmap.type == MULTIBOOT_MEMORY_ACPI_RECLAIMABLE) {
+ pmm_mark_page_free(_pa >> PG_SIZE_BITS);
+ }
+ }
}
}
}
\ No newline at end of file
git://scm.lunaixsky.com / lunaix-os.git / blobdiff