mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-07 02:33:44 +09:00
db41d65a97
At present panic() is in the vsprintf.h header file. That does not seem like an obvious choice for hang(), even though it relates to panic(). So let's put hang() in its own header. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Migrate a few more files] Signed-off-by: Tom Rini <trini@konsulko.com>
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 1994 - 1999, 2000, 01, 06 Ralf Baechle
|
|
* Copyright (C) 1995, 1996 Paul M. Antoine
|
|
* Copyright (C) 1998 Ulf Carlsson
|
|
* Copyright (C) 1999 Silicon Graphics, Inc.
|
|
* Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
|
|
* Copyright (C) 2002, 2003, 2004, 2005, 2007 Maciej W. Rozycki
|
|
* Copyright (C) 2000, 2001, 2012 MIPS Technologies, Inc. All rights reserved.
|
|
* Copyright (C) 2014, Imagination Technologies Ltd.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu_func.h>
|
|
#include <hang.h>
|
|
#include <init.h>
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/addrspace.h>
|
|
#include <asm/system.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static void show_regs(const struct pt_regs *regs)
|
|
{
|
|
const int field = 2 * sizeof(unsigned long);
|
|
unsigned int cause = regs->cp0_cause;
|
|
unsigned int exccode;
|
|
int i;
|
|
|
|
/*
|
|
* Saved main processor registers
|
|
*/
|
|
for (i = 0; i < 32; ) {
|
|
if ((i % 4) == 0)
|
|
printf("$%2d :", i);
|
|
if (i == 0)
|
|
printf(" %0*lx", field, 0UL);
|
|
else if (i == 26 || i == 27)
|
|
printf(" %*s", field, "");
|
|
else
|
|
printf(" %0*lx", field, regs->regs[i]);
|
|
|
|
i++;
|
|
if ((i % 4) == 0)
|
|
puts("\n");
|
|
}
|
|
|
|
printf("Hi : %0*lx\n", field, regs->hi);
|
|
printf("Lo : %0*lx\n", field, regs->lo);
|
|
|
|
/*
|
|
* Saved cp0 registers
|
|
*/
|
|
printf("epc : %0*lx (text %0*lx)\n", field, regs->cp0_epc,
|
|
field, regs->cp0_epc - gd->reloc_off);
|
|
printf("ra : %0*lx (text %0*lx)\n", field, regs->regs[31],
|
|
field, regs->regs[31] - gd->reloc_off);
|
|
|
|
printf("Status: %08x\n", (uint32_t) regs->cp0_status);
|
|
|
|
exccode = (cause & CAUSEF_EXCCODE) >> CAUSEB_EXCCODE;
|
|
printf("Cause : %08x (ExcCode %02x)\n", cause, exccode);
|
|
|
|
if (1 <= exccode && exccode <= 5)
|
|
printf("BadVA : %0*lx\n", field, regs->cp0_badvaddr);
|
|
|
|
printf("PrId : %08x\n", read_c0_prid());
|
|
}
|
|
|
|
void do_reserved(const struct pt_regs *regs)
|
|
{
|
|
puts("\nOoops:\n");
|
|
show_regs(regs);
|
|
hang();
|
|
}
|
|
|
|
void do_ejtag_debug(const struct pt_regs *regs)
|
|
{
|
|
const int field = 2 * sizeof(unsigned long);
|
|
unsigned long depc;
|
|
unsigned int debug;
|
|
|
|
depc = read_c0_depc();
|
|
debug = read_c0_debug();
|
|
|
|
printf("SDBBP EJTAG debug exception: c0_depc = %0*lx, DEBUG = %08x\n",
|
|
field, depc, debug);
|
|
}
|
|
|
|
static void set_handler(unsigned long offset, void *addr, unsigned long size)
|
|
{
|
|
unsigned long ebase = gd->irq_sp;
|
|
|
|
memcpy((void *)(ebase + offset), addr, size);
|
|
flush_cache(ebase + offset, size);
|
|
}
|
|
|
|
void trap_init(ulong reloc_addr)
|
|
{
|
|
unsigned long ebase = gd->irq_sp;
|
|
|
|
set_handler(0x180, &except_vec3_generic, 0x80);
|
|
set_handler(0x280, &except_vec_ejtag_debug, 0x80);
|
|
|
|
write_c0_ebase(ebase);
|
|
clear_c0_status(ST0_BEV);
|
|
execution_hazard_barrier();
|
|
}
|