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/*
* Copyright (c) 2001-2004 Jakub Jermar
* Copyright (c) 2009 Jiri Svoboda
* Copyright (c) 2009 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 ia32
* @{
*/
/** @file
*/
#include <arch.h>
#include <arch/types.h>
#include <arch/pm.h>
#include <genarch/drivers/legacy/ia32/io.h>
#include <genarch/drivers/ega/ega.h>
#include <arch/drivers/vesa.h>
#include <genarch/kbd/i8042.h>
#include <arch/drivers/i8254.h>
#include <arch/drivers/i8259.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 <ddi/irq.h>
#include <arch/debugger.h>
#include <proc/thread.h>
#include <syscall/syscall.h>
#include <console/console.h>
#include <ddi/device.h>
#include <sysinfo/sysinfo.h>
#include <arch/boot/boot.h>
#include <string.h>
#include <macros.h>
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#endif
/** Extract command name from the multiboot module command line.
*
* @param buf Destination buffer (will always null-terminate).
* @param n Size of destination buffer.
* @param cmd_line Input string (the command line).
*
*/
static void extract_command(char *buf, size_t n, const char *cmd_line)
{
const char *start, *end, *cp;
size_t max_len;
/* Find the first space. */
end = strchr(cmd_line, ' ');
if (end == NULL)
end = cmd_line + strlen(cmd_line);
/*
* Find last occurence of '/' before 'end'. If found, place start at
* next character. Otherwise, place start at beginning of buffer.
*/
cp = end;
start = buf;
while (cp != start) {
if (*cp == '/') {
start = cp + 1;
break;
}
--cp;
}
/* Copy the command and null-terminate the string. */
max_len = min(n - 1, (size_t) (end - start));
strncpy(buf, start, max_len + 1);
buf[max_len] = '\0';
}
/** C part of ia32 boot sequence.
*
* @param signature Should contain the multiboot signature.
* @param mi Pointer to the multiboot information structure.
*/
void arch_pre_main(uint32_t signature, const mb_info_t *mi)
{
uint32_t flags;
mb_mod_t *mods;
uint32_t i;
if (signature == MULTIBOOT_LOADER_MAGIC)
flags = mi->flags;
else {
/* No multiboot info available. */
flags = 0;
}
/* Copy module information. */
if ((flags & MBINFO_FLAGS_MODS) != 0) {
init.cnt = mi->mods_count;
mods = mi->mods_addr;
for (i = 0; i < init.cnt; i++) {
init.tasks[i].addr = mods[i].start + 0x80000000;
init.tasks[i].size = mods[i].end - mods[i].start;
/* Copy command line, if available. */
if (mods[i].string) {
extract_command(init.tasks[i].name,
CONFIG_TASK_NAME_BUFLEN,
mods[i].string);
} else
init.tasks[i].name[0] = '\0';
}
} else
init.cnt = 0;
/* Copy memory map. */
int32_t mmap_length;
mb_mmap_t *mme;
uint32_t size;
if ((flags & MBINFO_FLAGS_MMAP) != 0) {
mmap_length = mi->mmap_length;
mme = mi->mmap_addr;
e820counter = 0;
i = 0;
while (mmap_length > 0) {
e820table[i++] = mme->mm_info;
/* Compute address of next structure. */
size = sizeof(mme->size) + mme->size;
mme = ((void *) mme) + size;
mmap_length -= size;
}
e820counter = i;
} else
e820counter = 0;
#ifdef CONFIG_SMP
/* Copy AP bootstrap routines below 1 MB. */
memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
(size_t) &_hardcoded_unmapped_size);
#endif
}
void arch_pre_mm_init(void)
{
pm_init();
if (config.cpu_active == 1) {
interrupt_init();
bios_init();
/* PIC */
i8259_init();
}
}
void arch_post_mm_init(void)
{
if (config.cpu_active == 1) {
/* Initialize IRQ routing */
irq_init(IRQ_COUNT, IRQ_COUNT);
/* hard clock */
i8254_init();
#ifdef CONFIG_FB
if (vesa_present())
vesa_init();
else
#endif
ega_init(EGA_BASE, EGA_VIDEORAM); /* video */
/* Enable debugger */
debugger_init();
/* Merge all memory zones to 1 big zone */
zone_merge_all();
}
}
void arch_post_cpu_init()
{
#ifdef CONFIG_SMP
if (config.cpu_active > 1) {
l_apic_init();
l_apic_debug();
}
#endif
}
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)
{
devno_t devno = device_assign_devno();
/* keyboard controller */
(void) i8042_init((i8042_t *) I8042_BASE, devno, IRQ_KBD);
/*
* This is the necessary evil until the userspace driver is entirely
* self-sufficient.
*/
sysinfo_set_item_val("kbd", NULL, true);
sysinfo_set_item_val("kbd.devno", NULL, devno);
sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
}
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)
{
#ifdef CONFIG_FB
vesa_redraw();
#else
ega_redraw();
#endif
}
/** Return console to userspace
*
*/
void arch_release_console(void)
{
}
/** Construct function pointer
*
* @param fptr function pointer structure
* @param addr function address
* @param caller calling function address
*
* @return address of the function pointer
*
*/
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
{
return addr;
}
/** @}
*/