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/*
* Copyright (c) 2005 Jakub Jermar
* 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 ia64
* @{
*/
/** @file
*/
#include <arch.h>
#include <arch/ski/ski.h>
#include <arch/drivers/it.h>
#include <arch/interrupt.h>
#include <arch/barrier.h>
#include <arch/asm.h>
#include <arch/register.h>
#include <arch/types.h>
#include <arch/context.h>
#include <arch/stack.h>
#include <arch/mm/page.h>
#include <mm/as.h>
#include <config.h>
#include <userspace.h>
#include <console/console.h>
#include <proc/uarg.h>
#include <syscall/syscall.h>
#include <ddi/irq.h>
#include <ddi/device.h>
#include <arch/bootinfo.h>
#include <genarch/drivers/legacy/ia32/io.h>
#include <genarch/drivers/ega/ega.h>
#include <genarch/kbd/i8042.h>
#include <genarch/kbd/ns16550.h>
#include <smp/smp.h>
#include <smp/ipi.h>
#include <arch/atomic.h>
#include <panic.h>
#include <print.h>
#include <sysinfo/sysinfo.h>
/* NS16550 as a COM 1 */
#define NS16550_IRQ (4 + LEGACY_INTERRUPT_BASE)
#define NS16550_PORT 0x3f8
bootinfo_t *bootinfo;
static uint64_t iosapic_base = 0xfec00000;
void arch_pre_main(void)
{
/* Setup usermode init tasks. */
unsigned int i;
init.cnt = bootinfo->taskmap.count;
for (i = 0; i < init.cnt; i++) {
init.tasks[i].addr =
((unsigned long) bootinfo->taskmap.tasks[i].addr) |
VRN_MASK;
init.tasks[i].size = bootinfo->taskmap.tasks[i].size;
}
}
void arch_pre_mm_init(void)
{
/*
* Set Interruption Vector Address (i.e. location of interruption vector
* table).
*/
iva_write((uintptr_t) &ivt);
srlz_d();
}
static void iosapic_init(void)
{
uint64_t IOSAPIC = PA2KA((unative_t)(iosapic_base)) | FW_OFFSET;
int i;
int myid, myeid;
myid = ia64_get_cpu_id();
myeid = ia64_get_cpu_eid();
for (i = 0; i < 16; i++) {
if (i == 2)
continue; /* Disable Cascade interrupt */
((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i;
srlz_d();
((uint32_t *)(IOSAPIC + 0x10))[0] = LEGACY_INTERRUPT_BASE + i;
srlz_d();
((uint32_t *)(IOSAPIC + 0x00))[0] = 0x10 + 2 * i + 1;
srlz_d();
((uint32_t *)(IOSAPIC + 0x10))[0] = myid << (56 - 32) |
myeid << (48 - 32);
srlz_d();
}
}
void arch_post_mm_init(void)
{
if (config.cpu_active == 1) {
iosapic_init();
irq_init(INR_COUNT, INR_COUNT);
#ifdef SKI
ski_init_console();
#else
ega_init(EGA_BASE, EGA_VIDEORAM);
#endif
}
it_init();
}
void arch_post_cpu_init(void)
{
}
void arch_pre_smp_init(void)
{
}
void arch_post_smp_init(void)
{
/*
* Create thread that polls keyboard.
*/
#ifdef SKI
thread_t *t = thread_create(kkbdpoll, NULL, TASK, 0, "kkbdpoll", true);
if (!t)
panic("Cannot create kkbdpoll.");
thread_ready(t);
#endif
#ifdef I460GX
devno_t kbd = device_assign_devno();
#ifdef CONFIG_NS16550
ns16550_init(kbd, NS16550_PORT, NS16550_IRQ, NULL, NULL);
#else
devno_t mouse = device_assign_devno();
i8042_init(kbd, IRQ_KBD, mouse, IRQ_MOUSE);
#endif
#endif
sysinfo_set_item_val("ia64_iospace", NULL, true);
sysinfo_set_item_val("ia64_iospace.address", NULL, true);
sysinfo_set_item_val("ia64_iospace.address.virtual", NULL, IO_OFFSET);
}
/** Enter userspace and never return. */
void userspace(uspace_arg_t *kernel_uarg)
{
psr_t psr;
rsc_t rsc;
psr.value = psr_read();
psr.cpl = PL_USER;
psr.i = true; /* start with interrupts enabled */
psr.ic = true;
psr.ri = 0; /* start with instruction #0 */
psr.bn = 1; /* start in bank 0 */
asm volatile ("mov %0 = ar.rsc\n" : "=r" (rsc.value));
rsc.loadrs = 0;
rsc.be = false;
rsc.pl = PL_USER;
rsc.mode = 3; /* eager mode */
switch_to_userspace((uintptr_t) kernel_uarg->uspace_entry,
((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE -
ALIGN_UP(STACK_ITEM_SIZE, STACK_ALIGNMENT),
((uintptr_t) kernel_uarg->uspace_stack) + PAGE_SIZE,
(uintptr_t) kernel_uarg->uspace_uarg, psr.value, rsc.value);
while (1)
;
}
/** Set thread-local-storage pointer.
*
* We use r13 (a.k.a. tp) for this purpose.
*/
unative_t sys_tls_set(unative_t addr)
{
return 0;
}
/** Acquire console back for kernel
*
*/
void arch_grab_console(void)
{
#ifdef SKI
ski_kbd_grab();
#else
#ifdef CONFIG_NS16550
ns16550_grab();
#else
i8042_grab();
#endif
#endif
}
/** Return console to userspace
*
*/
void arch_release_console(void)
{
#ifdef SKI
ski_kbd_release();
#else
#ifdef CONFIG_NS16550
ns16550_release();
#else
i8042_release();
#endif
#endif
}
void arch_reboot(void)
{
pio_write_8(0x64, 0xfe);
while (1)
;
}
/** 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)
{
fptr->fnc = (unative_t) addr;
fptr->gp = ((unative_t *) caller)[1];
return (void *) fptr;
}
/** @}
*/