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