mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-21 01:18:52 +09:00
![Wolfgang Denk](/assets/img/avatar_default.png)
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
73 lines
1.4 KiB
C
73 lines
1.4 KiB
C
/*
|
|
* (C) Copyright 2011, Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
|
|
* (C) Copyright 2011, Julius Baxter <julius@opencores.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <stdio_dev.h>
|
|
#include <asm/system.h>
|
|
|
|
static const char * const excp_table[] = {
|
|
"Unknown exception",
|
|
"Reset",
|
|
"Bus Error",
|
|
"Data Page Fault",
|
|
"Instruction Page Fault",
|
|
"Tick Timer",
|
|
"Alignment",
|
|
"Illegal Instruction",
|
|
"External Interrupt",
|
|
"D-TLB Miss",
|
|
"I-TLB Miss",
|
|
"Range",
|
|
"System Call",
|
|
"Floating Point",
|
|
"Trap",
|
|
};
|
|
|
|
static void (*handlers[32])(void);
|
|
|
|
void exception_install_handler(int exception, void (*handler)(void))
|
|
{
|
|
if (exception < 0 || exception > 31)
|
|
return;
|
|
|
|
handlers[exception] = handler;
|
|
}
|
|
|
|
void exception_free_handler(int exception)
|
|
{
|
|
if (exception < 0 || exception > 31)
|
|
return;
|
|
|
|
handlers[exception] = 0;
|
|
}
|
|
|
|
static void exception_hang(int vect)
|
|
{
|
|
printf("Unhandled exception at 0x%x ", vect & 0xff00);
|
|
|
|
vect = ((vect >> 8) & 0xff);
|
|
if (vect < ARRAY_SIZE(excp_table))
|
|
printf("(%s)\n", excp_table[vect]);
|
|
else
|
|
printf("(%s)\n", excp_table[0]);
|
|
|
|
printf("EPCR: 0x%08lx\n", mfspr(SPR_EPCR_BASE));
|
|
printf("EEAR: 0x%08lx\n", mfspr(SPR_EEAR_BASE));
|
|
printf("ESR: 0x%08lx\n", mfspr(SPR_ESR_BASE));
|
|
hang();
|
|
}
|
|
|
|
void exception_handler(int vect)
|
|
{
|
|
int exception = vect >> 8;
|
|
|
|
if (handlers[exception])
|
|
handlers[exception]();
|
|
else
|
|
exception_hang(vect);
|
|
}
|