/*
* Copyright (c) 2007 Michal Kebrt
* 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 arm32
* @{
*/
/** @file
* @brief ARM32 architecture specific functions.
*/
#include <arch.h>
#include <config.h>
#include <genarch/fb/fb.h>
#include <genarch/fb/visuals.h>
#include <genarch/drivers/dsrln/dsrlnin.h>
#include <genarch/drivers/dsrln/dsrlnout.h>
#include <genarch/srln/srln.h>
#include <sysinfo/sysinfo.h>
#include <console/console.h>
#include <ddi/irq.h>
#include <arch/drivers/gxemul.h>
#include <print.h>
#include <config.h>
#include <interrupt.h>
#include <arch/regutils.h>
#include <userspace.h>
#include <macros.h>
#include <string.h>
/** Performs arm32-specific initialization before main_bsp() is called. */
void arch_pre_main(void *entry __attribute__((unused)), bootinfo_t *bootinfo)
{
unsigned int i;
init.cnt = bootinfo->cnt;
for (i = 0; i < min3(bootinfo->cnt, TASKMAP_MAX_RECORDS, CONFIG_INIT_TASKS); ++i) {
init.tasks[i].addr = bootinfo->tasks[i].addr;
init.tasks[i].size = bootinfo->tasks[i].size;
str_cpy(init.tasks[i].name, CONFIG_TASK_NAME_BUFLEN,
bootinfo->tasks[i].name);
}
}
/** Performs arm32 specific initialization before mm is initialized. */
void arch_pre_mm_init(void)
{
/* It is not assumed by default */
interrupts_disable();
}
/** Performs arm32 specific initialization afterr mm is initialized. */
void arch_post_mm_init(void)
{
gxemul_init();
/* Initialize exception dispatch table */
exception_init();
interrupt_init();
#ifdef CONFIG_FB
fb_properties_t prop = {
.addr = GXEMUL_FB_ADDRESS,
.offset = 0,
.x = 640,
.y = 480,
.scan = 1920,
.visual = VISUAL_BGR_8_8_8,
};
fb_init(&prop);
#else
#ifdef CONFIG_ARM_PRN
dsrlnout_init((ioport8_t *) gxemul_kbd);
#endif /* CONFIG_ARM_PRN */
#endif /* CONFIG_FB */
}
/** Performs arm32 specific tasks needed after cpu is initialized.
*
* Currently the function is empty.
*/
void arch_post_cpu_init(void)
{
}
/** Performs arm32 specific tasks needed before the multiprocessing is
* initialized.
*
* Currently the function is empty because SMP is not supported.
*/
void arch_pre_smp_init(void)
{
}
/** Performs arm32 specific tasks needed after the multiprocessing is
* initialized.
*
* Currently the function is empty because SMP is not supported.
*/
void arch_post_smp_init(void)
{
#ifdef CONFIG_ARM_KBD
/*
* Initialize the GXemul keyboard port. Then initialize the serial line
* module and connect it to the GXemul keyboard.
*/
dsrlnin_instance_t *dsrlnin_instance
= dsrlnin_init((dsrlnin_t *) gxemul_kbd, GXEMUL_KBD_IRQ);
if (dsrlnin_instance) {
srln_instance_t *srln_instance = srln_init();
if (srln_instance) {
indev_t *sink = stdin_wire();
indev_t *srln = srln_wire(srln_instance, sink);
dsrlnin_wire(dsrlnin_instance, srln);
}
}
/*
* 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.inr", NULL, GXEMUL_KBD_IRQ);
sysinfo_set_item_val("kbd.address.virtual", NULL, (unative_t) gxemul_kbd);
#endif
}
/** Performs arm32 specific tasks needed before the new task is run. */
void before_task_runs_arch(void)
{
tlb_invalidate_all();
}
/** Performs arm32 specific tasks needed before the new thread is scheduled.
*
* It sets supervisor_sp.
*/
void before_thread_runs_arch(void)
{
uint8_t *stck;
stck = &THREAD->kstack[THREAD_STACK_SIZE - SP_DELTA];
supervisor_sp = (uintptr_t) stck;
}
/** Performs arm32 specific tasks before a thread stops running.
*
* Currently the function is empty.
*/
void after_thread_ran_arch(void)
{
}
/** Halts CPU. */
void cpu_halt(void)
{
*((char *) (gxemul_kbd + GXEMUL_HALT_OFFSET))
= 0;
}
/** Reboot. */
void arch_reboot()
{
/* not implemented */
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)
{
return addr;
}
/** Acquire console back for kernel. */
void arch_grab_console(void)
{
#ifdef CONFIG_FB
fb_redraw();
#endif
}
/** Return console to userspace. */
void arch_release_console(void)
{
}
/** @}
*/