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/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Alex Zuepke <azu@sysgo.de>
*
* Copyright (C) 2011 Andes Technology Corporation
* Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/ptrace.h>
#include <asm/system.h>
#undef INTERRUPT_MODE
static int int_flag;
int irq_flags; /* needed by asm-nds32/system.h */
int GIE_STATUS(void)
{
int ret;
__asm__ __volatile__ (
"mfsr $p0, $psw\n\t"
"andi %0, %0, 0x1\n\t"
: "=r" (ret)
:
: "memory"
);
return ret;
}
#ifdef CONFIG_USE_INTERRUPT
/* enable interrupts */
void enable_interrupts(void)
{
local_irq_restore(int_flag);
}
/*
* disable interrupts
* Return TRUE if GIE is enabled before we disable it.
*/
int disable_interrupts(void)
{
int gie_ori_status;
gie_ori_status = GIE_STATUS();
local_irq_save(int_flag);
return gie_ori_status;
}
#endif
void bad_mode(void)
{
panic("Resetting CPU ...\n");
reset_cpu(0);
}
void show_regs(struct pt_regs *regs)
{
const char *processor_modes[] = {"USER", "SuperUser" , "HyperVisor"};
printf("\n");
printf("pc : [<%08lx>] sp: [<%08lx>]\n"
"lp : %08lx gp : %08lx fp : %08lx\n",
regs->ipc, regs->sp, regs->lp, regs->gp, regs->fp);
printf("D1H: %08lx D1L: %08lx D0H: %08lx D0L: %08lx\n",
regs->d1hi, regs->d1lo, regs->d0hi, regs->d0lo);
printf("r27: %08lx r26: %08lx r25: %08lx r24: %08lx\n",
regs->r[27], regs->r[26], regs->r[25], regs->r[24]);
printf("r23: %08lx r22: %08lx r21: %08lx r20: %08lx\n",
regs->r[23], regs->r[22], regs->r[21], regs->r[20]);
printf("r19: %08lx r18: %08lx r17: %08lx r16: %08lx\n",
regs->r[19], regs->r[18], regs->r[17], regs->r[16]);
printf("r15: %08lx r14: %08lx r13: %08lx r12: %08lx\n",
regs->r[15], regs->r[14], regs->r[13], regs->r[12]);
printf("r11: %08lx r10: %08lx r9 : %08lx r8 : %08lx\n",
regs->r[11], regs->r[10], regs->r[9], regs->r[8]);
printf("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
regs->r[7], regs->r[6], regs->r[5], regs->r[4]);
printf("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
regs->r[3], regs->r[2], regs->r[1], regs->r[0]);
printf(" Interrupts %s Mode %s\n",
interrupts_enabled(regs) ? "on" : "off",
processor_modes[processor_mode(regs)]);
}
void do_interruption(struct pt_regs *pt_regs, int EVIC_num)
{
const char *interruption_type[] = {
"Reset",
"TLB Fill",
"TLB Not Present",
"TLB Misc",
"VLPT Miss",
"Cache Parity Error",
"Debug",
"General Exception",
"External Interrupt"
};
printf("%s\n", interruption_type[EVIC_num]);
show_regs(pt_regs);
bad_mode();
}