linux-stable/arch/sh/boards/mach-cayman/panic.c
Kuninori Morimoto aaf9128abc sh: boards: convert to SPDX identifiers
Update license to use SPDX-License-Identifier instead of verbose license
text.

Link: http://lkml.kernel.org/r/87in08ct0n.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-28 12:11:44 -08:00

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891 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2003 Richard Curnow, SuperH UK Limited
*/
#include <linux/kernel.h>
#include <linux/io.h>
#include <cpu/registers.h>
/* THIS IS A PHYSICAL ADDRESS */
#define HDSP2534_ADDR (0x04002100)
static void poor_mans_delay(void)
{
int i;
for (i = 0; i < 2500000; i++)
cpu_relax();
}
static void show_value(unsigned long x)
{
int i;
unsigned nibble;
for (i = 0; i < 8; i++) {
nibble = ((x >> (i * 4)) & 0xf);
__raw_writeb(nibble + ((nibble > 9) ? 55 : 48),
HDSP2534_ADDR + 0xe0 + ((7 - i) << 2));
}
}
void
panic_handler(unsigned long panicPC, unsigned long panicSSR,
unsigned long panicEXPEVT)
{
while (1) {
/* This piece of code displays the PC on the LED display */
show_value(panicPC);
poor_mans_delay();
show_value(panicSSR);
poor_mans_delay();
show_value(panicEXPEVT);
poor_mans_delay();
}
}