blob: db95de247dfa277a7b329e750ed214014d62265e [file] [log] [blame]
/*
* This file is part of the libpayload project.
*
* Copyright 2013 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <console/console.h>
#include <arch/exception.h>
#include <stdint.h>
void exception_test(void);
static int test_abort;
void exception_undefined_instruction(uint32_t *);
void exception_software_interrupt(uint32_t *);
void exception_prefetch_abort(uint32_t *);
void exception_data_abort(uint32_t *);
void exception_not_used(uint32_t *);
void exception_irq(uint32_t *);
void exception_fiq(uint32_t *);
static void print_regs(uint32_t *regs)
{
int i;
// XXX
for (i = 0; i < 16; i++) {
if (i == 15)
printk(BIOS_ERR, "PC");
else if (i == 14)
continue; /* LR */
else if (i == 13)
continue; /* SP */
else if (i == 12)
printk(BIOS_ERR, "IP");
else
printk(BIOS_ERR, "R%d", i);
printk(BIOS_ERR, " = 0x%08x\n", regs[i]);
}
}
void exception_undefined_instruction(uint32_t *regs)
{
printk(BIOS_ERR, "exception _undefined_instruction\n");
print_regs(regs);
die("exception");
}
void exception_software_interrupt(uint32_t *regs)
{
printk(BIOS_ERR, "exception _software_interrupt\n");
print_regs(regs);
die("exception");
}
void exception_prefetch_abort(uint32_t *regs)
{
printk(BIOS_ERR, "exception _prefetch_abort\n");
print_regs(regs);
die("exception");
}
void exception_data_abort(uint32_t *regs)
{
if (test_abort) {
regs[15] = regs[0];
return;
} else {
printk(BIOS_ERR, "exception _data_abort\n");
print_regs(regs);
}
die("exception");
}
void exception_not_used(uint32_t *regs)
{
printk(BIOS_ERR, "exception _not_used\n");
print_regs(regs);
die("exception");
}
void exception_irq(uint32_t *regs)
{
}
void exception_fiq(uint32_t *regs)
{
}
static inline uint32_t get_sctlr(void)
{
return 0;
}
static inline void set_sctlr(uint32_t val)
{
}
void exception_init(void)
{
test_abort = 1;
printk(BIOS_ERR, "Testing exceptions\n");
//exception_test();
//test_abort = 0;
printk(BIOS_ERR, "Testing exceptions: DONE\n");
}