1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2013
4 * David Feng <fenghua@phytium.com.cn>
5 */
6
7 #include <common.h>
8 #include <linux/compiler.h>
9 #include <efi_loader.h>
10
11 DECLARE_GLOBAL_DATA_PTR;
12
interrupt_init(void)13 int interrupt_init(void)
14 {
15 return 0;
16 }
17
enable_interrupts(void)18 void enable_interrupts(void)
19 {
20 return;
21 }
22
disable_interrupts(void)23 int disable_interrupts(void)
24 {
25 return 0;
26 }
27
show_regs(struct pt_regs * regs)28 void show_regs(struct pt_regs *regs)
29 {
30 int i;
31
32 if (gd->flags & GD_FLG_RELOC)
33 printf("elr: %016lx lr : %016lx (reloc)\n",
34 regs->elr - gd->reloc_off,
35 regs->regs[30] - gd->reloc_off);
36 printf("elr: %016lx lr : %016lx\n", regs->elr, regs->regs[30]);
37
38 for (i = 0; i < 29; i += 2)
39 printf("x%-2d: %016lx x%-2d: %016lx\n",
40 i, regs->regs[i], i+1, regs->regs[i+1]);
41 printf("\n");
42 }
43
44 /*
45 * do_bad_sync handles the impossible case in the Synchronous Abort vector.
46 */
do_bad_sync(struct pt_regs * pt_regs,unsigned int esr)47 void do_bad_sync(struct pt_regs *pt_regs, unsigned int esr)
48 {
49 efi_restore_gd();
50 printf("Bad mode in \"Synchronous Abort\" handler, esr 0x%08x\n", esr);
51 show_regs(pt_regs);
52 panic("Resetting CPU ...\n");
53 }
54
55 /*
56 * do_bad_irq handles the impossible case in the Irq vector.
57 */
do_bad_irq(struct pt_regs * pt_regs,unsigned int esr)58 void do_bad_irq(struct pt_regs *pt_regs, unsigned int esr)
59 {
60 efi_restore_gd();
61 printf("Bad mode in \"Irq\" handler, esr 0x%08x\n", esr);
62 show_regs(pt_regs);
63 panic("Resetting CPU ...\n");
64 }
65
66 /*
67 * do_bad_fiq handles the impossible case in the Fiq vector.
68 */
do_bad_fiq(struct pt_regs * pt_regs,unsigned int esr)69 void do_bad_fiq(struct pt_regs *pt_regs, unsigned int esr)
70 {
71 efi_restore_gd();
72 printf("Bad mode in \"Fiq\" handler, esr 0x%08x\n", esr);
73 show_regs(pt_regs);
74 panic("Resetting CPU ...\n");
75 }
76
77 /*
78 * do_bad_error handles the impossible case in the Error vector.
79 */
do_bad_error(struct pt_regs * pt_regs,unsigned int esr)80 void do_bad_error(struct pt_regs *pt_regs, unsigned int esr)
81 {
82 efi_restore_gd();
83 printf("Bad mode in \"Error\" handler, esr 0x%08x\n", esr);
84 show_regs(pt_regs);
85 panic("Resetting CPU ...\n");
86 }
87
88 /*
89 * do_sync handles the Synchronous Abort exception.
90 */
do_sync(struct pt_regs * pt_regs,unsigned int esr)91 void do_sync(struct pt_regs *pt_regs, unsigned int esr)
92 {
93 efi_restore_gd();
94 printf("\"Synchronous Abort\" handler, esr 0x%08x\n", esr);
95 show_regs(pt_regs);
96 panic("Resetting CPU ...\n");
97 }
98
99 /*
100 * do_irq handles the Irq exception.
101 */
do_irq(struct pt_regs * pt_regs,unsigned int esr)102 void do_irq(struct pt_regs *pt_regs, unsigned int esr)
103 {
104 efi_restore_gd();
105 printf("\"Irq\" handler, esr 0x%08x\n", esr);
106 show_regs(pt_regs);
107 panic("Resetting CPU ...\n");
108 }
109
110 /*
111 * do_fiq handles the Fiq exception.
112 */
do_fiq(struct pt_regs * pt_regs,unsigned int esr)113 void do_fiq(struct pt_regs *pt_regs, unsigned int esr)
114 {
115 efi_restore_gd();
116 printf("\"Fiq\" handler, esr 0x%08x\n", esr);
117 show_regs(pt_regs);
118 panic("Resetting CPU ...\n");
119 }
120
121 /*
122 * do_error handles the Error exception.
123 * Errors are more likely to be processor specific,
124 * it is defined with weak attribute and can be redefined
125 * in processor specific code.
126 */
do_error(struct pt_regs * pt_regs,unsigned int esr)127 void __weak do_error(struct pt_regs *pt_regs, unsigned int esr)
128 {
129 efi_restore_gd();
130 printf("\"Error\" handler, esr 0x%08x\n", esr);
131 show_regs(pt_regs);
132 panic("Resetting CPU ...\n");
133 }
134