| 0,0 → 1,213 |
|---|
| /* |
| * Copyright (C) 2006 Martin Decky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup ia32xen |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <arch.h> |
| #include <main/main.h> |
| |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <align.h> |
| |
| #include <arch/pm.h> |
| |
| #include <arch/drivers/xconsole.h> |
| #include <arch/mm/page.h> |
| |
| #include <arch/context.h> |
| |
| #include <config.h> |
| |
| #include <arch/interrupt.h> |
| #include <arch/asm.h> |
| #include <genarch/acpi/acpi.h> |
| |
| #include <arch/bios/bios.h> |
| |
| #include <arch/boot/boot.h> |
| #include <arch/mm/memory_init.h> |
| #include <interrupt.h> |
| #include <arch/debugger.h> |
| #include <proc/thread.h> |
| #include <syscall/syscall.h> |
| #include <console/console.h> |
| |
| start_info_t start_info; |
| memzone_t meminfo; |
| |
| extern void xen_callback(void); |
| extern void xen_failsafe_callback(void); |
| |
| void arch_pre_main(void) |
| { |
| xen_vm_assist(VMASST_CMD_ENABLE, VMASST_TYPE_WRITABLE_PAGETABLES); |
| |
| pte_t pte; |
| memsetb((uintptr_t) &pte, sizeof(pte), 0); |
| |
| pte.present = 1; |
| pte.writeable = 1; |
| pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info); |
| xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG); |
| |
| pte.present = 1; |
| pte.writeable = 1; |
| pte.frame_address = start_info.console_mfn; |
| xen_update_va_mapping(&console_page, pte, UVMF_INVLPG); |
| |
| xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback); |
| |
| /* Create identity mapping */ |
| |
| meminfo.start = ADDR2PFN(ALIGN_UP(KA2PA(start_info.ptl0), PAGE_SIZE)) + start_info.pt_frames; |
| meminfo.size = start_info.frames - meminfo.start; |
| meminfo.reserved = 0; |
| |
| uintptr_t pa; |
| index_t last_ptl0 = 0; |
| for (pa = PFN2ADDR(meminfo.start); pa < PFN2ADDR(meminfo.start + meminfo.size); pa += FRAME_SIZE) { |
| uintptr_t va = PA2KA(pa); |
| |
| if ((PTL0_INDEX(va) != last_ptl0) && (GET_PTL1_FLAGS(start_info.ptl0, PTL0_INDEX(va)) & PAGE_NOT_PRESENT)) { |
| /* New page directory entry needed */ |
| uintptr_t tpa = PFN2ADDR(meminfo.start + meminfo.reserved); |
| uintptr_t tva = PA2KA(tpa); |
| |
| memsetb(tva, PAGE_SIZE, 0); |
| |
| pte_t *tptl3 = (pte_t *) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva))); |
| SET_FRAME_FLAGS(tptl3, PTL3_INDEX(tva), PAGE_PRESENT); |
| SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa); |
| |
| last_ptl0 = PTL0_INDEX(va); |
| meminfo.reserved++; |
| } |
| |
| pte_t *ptl3 = (pte_t *) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va))); |
| |
| SET_FRAME_ADDRESS(ptl3, PTL3_INDEX(va), pa); |
| SET_FRAME_FLAGS(ptl3, PTL3_INDEX(va), PAGE_PRESENT | PAGE_WRITE); |
| } |
| |
| /* Put initial stack safely in the mapped area */ |
| stack_safe = PA2KA(PFN2ADDR(meminfo.start + meminfo.reserved)); |
| } |
| |
| void arch_pre_mm_init(void) |
| { |
| pm_init(); |
| |
| if (config.cpu_active == 1) { |
| // bios_init(); |
| |
| exc_register(VECTOR_SYSCALL, "syscall", (iroutine) syscall); |
| |
| #ifdef CONFIG_SMP |
| exc_register(VECTOR_TLB_SHOOTDOWN_IPI, "tlb_shootdown", |
| (iroutine) tlb_shootdown_ipi); |
| #endif /* CONFIG_SMP */ |
| } |
| } |
| |
| void arch_post_mm_init(void) |
| { |
| if (config.cpu_active == 1) { |
| /* video */ |
| xen_console_init(); |
| /* Enable debugger */ |
| debugger_init(); |
| /* Merge all memory zones to 1 big zone */ |
| zone_merge_all(); |
| } |
| } |
| |
| void arch_post_cpu_init(void) |
| { |
| } |
| |
| void arch_pre_smp_init(void) |
| { |
| if (config.cpu_active == 1) { |
| memory_print_map(); |
| |
| #ifdef CONFIG_SMP |
| acpi_init(); |
| #endif /* CONFIG_SMP */ |
| } |
| } |
| |
| void arch_post_smp_init(void) |
| { |
| } |
| |
| void calibrate_delay_loop(void) |
| { |
| // i8254_calibrate_delay_loop(); |
| if (config.cpu_active == 1) { |
| /* |
| * This has to be done only on UP. |
| * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked. |
| */ |
| // i8254_normal_operation(); |
| } |
| } |
| |
| /** Set thread-local-storage pointer |
| * |
| * TLS pointer is set in GS register. That means, the GS contains |
| * selector, and the descriptor->base is the correct address. |
| */ |
| unative_t sys_tls_set(unative_t addr) |
| { |
| THREAD->arch.tls = addr; |
| set_tls_desc(addr); |
| |
| return 0; |
| } |
| |
| /** Acquire console back for kernel |
| * |
| */ |
| void arch_grab_console(void) |
| { |
| } |
| |
| /** Return console to userspace |
| * |
| */ |
| void arch_release_console(void) |
| { |
| } |
| |
| /** @} |
| */ |