1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * (C) Copyright 2002 4 * Sysgo Real-Time Solutions, GmbH <www.elinos.com> 5 * Alex Zuepke <azu@sysgo.de> 6 * 7 * Copyright (C) 2011 Andes Technology Corporation 8 * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> 9 * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> 10 */ 11 12 #include <common.h> 13 #include <asm/ptrace.h> 14 #include <asm/system.h> 15 #undef INTERRUPT_MODE 16 17 static int int_flag; 18 19 int irq_flags; /* needed by asm-nds32/system.h */ 20 21 int GIE_STATUS(void) 22 { 23 int ret; 24 25 __asm__ __volatile__ ( 26 "mfsr $p0, $psw\n\t" 27 "andi %0, %0, 0x1\n\t" 28 : "=r" (ret) 29 : 30 : "memory" 31 ); 32 return ret; 33 } 34 35 #ifdef CONFIG_USE_INTERRUPT 36 37 int interrupt_init(void) 38 { 39 return 0; 40 } 41 /* enable interrupts */ 42 void enable_interrupts(void) 43 { 44 local_irq_restore(int_flag); 45 } 46 47 /* 48 * disable interrupts 49 * Return true if GIE is enabled before we disable it. 50 */ 51 int disable_interrupts(void) 52 { 53 54 int gie_ori_status; 55 56 gie_ori_status = GIE_STATUS(); 57 58 local_irq_save(int_flag); 59 60 return gie_ori_status; 61 } 62 #endif 63 64 void bad_mode(void) 65 { 66 panic("Resetting CPU ...\n"); 67 reset_cpu(0); 68 } 69 70 void show_regs(struct pt_regs *regs) 71 { 72 const char *processor_modes[] = {"USER", "SuperUser" , "HyperVisor"}; 73 74 printf("\n"); 75 printf("pc : [<%08lx>] sp: [<%08lx>]\n" 76 "lp : %08lx gp : %08lx fp : %08lx\n", 77 regs->ipc, regs->sp, regs->lp, regs->gp, regs->fp); 78 printf("D1H: %08lx D1L: %08lx D0H: %08lx D0L: %08lx\n", 79 regs->d1hi, regs->d1lo, regs->d0hi, regs->d0lo); 80 printf("r27: %08lx r26: %08lx r25: %08lx r24: %08lx\n", 81 regs->p1, regs->p0, regs->r[25], regs->r[24]); 82 printf("r23: %08lx r22: %08lx r21: %08lx r20: %08lx\n", 83 regs->r[23], regs->r[22], regs->r[21], regs->r[20]); 84 printf("r19: %08lx r18: %08lx r17: %08lx r16: %08lx\n", 85 regs->r[19], regs->r[18], regs->r[17], regs->r[16]); 86 printf("r15: %08lx r14: %08lx r13: %08lx r12: %08lx\n", 87 regs->r[15], regs->r[14], regs->r[13], regs->r[12]); 88 printf("r11: %08lx r10: %08lx r9 : %08lx r8 : %08lx\n", 89 regs->r[11], regs->r[10], regs->r[9], regs->r[8]); 90 printf("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n", 91 regs->r[7], regs->r[6], regs->r[5], regs->r[4]); 92 printf("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n", 93 regs->r[3], regs->r[2], regs->r[1], regs->r[0]); 94 printf(" Interrupts %s Mode %s\n", 95 interrupts_enabled(regs) ? "on" : "off", 96 processor_modes[processor_mode(regs)]); 97 } 98 99 void do_interruption(struct pt_regs *pt_regs, int EVIC_num) 100 { 101 const char *interruption_type[] = { 102 "Reset", 103 "TLB Fill", 104 "TLB Not Present", 105 "TLB Misc", 106 "VLPT Miss", 107 "Cache Parity Error", 108 "Debug", 109 "General Exception", 110 "External Interrupt" 111 }; 112 113 printf("%s\n", interruption_type[EVIC_num]); 114 show_regs(pt_regs); 115 bad_mode(); 116 } 117