/*
* 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 <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 <interrupt.h>
#include <arch/debugger.h>
#include <proc/thread.h>
#include <syscall/syscall.h>
#include <console/console.h>
#include <ddi/irq.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)
{
pte_t pte;
memsetb(&pte, sizeof(pte), 0);
pte.present = 1;
pte.writeable = 1;
pte.frame_address = ADDR2PFN((uintptr_t) start_info.shared_info);
ASSERT(xen_update_va_mapping(&shared_info, pte, UVMF_INVLPG) == 0);
if (!(start_info.flags & SIF_INITDOMAIN)) {
/* Map console frame */
pte.present = 1;
pte.writeable = 1;
pte.frame_address = start_info.console.domU.mfn;
ASSERT(xen_update_va_mapping(&console_page, pte, UVMF_INVLPG) == 0);
} else
start_info.console.domU.evtchn = 0;
ASSERT(xen_set_callbacks(XEN_CS, xen_callback, XEN_CS, xen_failsafe_callback) == 0);
/* 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((void *) tva, PAGE_SIZE, 0);
pte_t *tptl3 = (pte_t *) PA2KA(GET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(tva)));
SET_FRAME_ADDRESS(tptl3, PTL3_INDEX(tva), 0);
SET_PTL1_ADDRESS(start_info.ptl0, PTL0_INDEX(va), tpa);
SET_FRAME_ADDRESS(tptl3, PTL3_INDEX(tva), 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) {
interrupt_init();
// bios_init();
}
}
void arch_post_mm_init(void)
{
if (config.cpu_active == 1) {
/* Initialize IRQ routing */
irq_init(IRQ_COUNT, IRQ_COUNT);
/* 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) {
#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)
{
}
void arch_reboot(void)
{
// TODO
while (1);
}
/** @}
*/