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21#include <common.h>
22#include <efi_loader.h>
23#include <asm/proc-armv/ptrace.h>
24#include <asm/u-boot-arm.h>
25#include <efi_loader.h>
26
27DECLARE_GLOBAL_DATA_PTR;
28
29int interrupt_init (void)
30{
31
32
33
34 IRQ_STACK_START_IN = gd->irq_sp + 8;
35
36 return 0;
37}
38
39void enable_interrupts (void)
40{
41 return;
42}
43int disable_interrupts (void)
44{
45 return 0;
46}
47
48void bad_mode (void)
49{
50 panic ("Resetting CPU ...\n");
51 reset_cpu (0);
52}
53
54static void show_efi_loaded_images(struct pt_regs *regs)
55{
56 efi_print_image_infos((void *)instruction_pointer(regs));
57}
58
59void show_regs (struct pt_regs *regs)
60{
61 unsigned long __maybe_unused flags;
62 const char __maybe_unused *processor_modes[] = {
63 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
64 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
65 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
66 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
67 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
68 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
69 "UK8_32", "UK9_32", "HYP_32", "UND_32",
70 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
71 };
72
73 flags = condition_codes (regs);
74
75 printf("pc : [<%08lx>] lr : [<%08lx>]\n",
76 instruction_pointer(regs), regs->ARM_lr);
77 if (gd->flags & GD_FLG_RELOC) {
78 printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
79 instruction_pointer(regs) - gd->reloc_off,
80 regs->ARM_lr - gd->reloc_off);
81 }
82 printf("sp : %08lx ip : %08lx fp : %08lx\n",
83 regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
84 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
85 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
86 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
87 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
88 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
89 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
90 printf ("Flags: %c%c%c%c",
91 flags & CC_N_BIT ? 'N' : 'n',
92 flags & CC_Z_BIT ? 'Z' : 'z',
93 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
94 printf (" IRQs %s FIQs %s Mode %s%s\n",
95 interrupts_enabled (regs) ? "on" : "off",
96 fast_interrupts_enabled (regs) ? "on" : "off",
97 processor_modes[processor_mode (regs)],
98 thumb_mode (regs) ? " (T)" : "");
99}
100
101
102static inline void fixup_pc(struct pt_regs *regs, int offset)
103{
104 uint32_t pc = instruction_pointer(regs) + offset;
105 regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
106}
107
108void do_undefined_instruction (struct pt_regs *pt_regs)
109{
110 efi_restore_gd();
111 printf ("undefined instruction\n");
112 fixup_pc(pt_regs, -4);
113 show_regs (pt_regs);
114 show_efi_loaded_images(pt_regs);
115 bad_mode ();
116}
117
118void do_software_interrupt (struct pt_regs *pt_regs)
119{
120 efi_restore_gd();
121 printf ("software interrupt\n");
122 fixup_pc(pt_regs, -4);
123 show_regs (pt_regs);
124 show_efi_loaded_images(pt_regs);
125 bad_mode ();
126}
127
128void do_prefetch_abort (struct pt_regs *pt_regs)
129{
130 efi_restore_gd();
131 printf ("prefetch abort\n");
132 fixup_pc(pt_regs, -8);
133 show_regs (pt_regs);
134 show_efi_loaded_images(pt_regs);
135 bad_mode ();
136}
137
138void do_data_abort (struct pt_regs *pt_regs)
139{
140 efi_restore_gd();
141 printf ("data abort\n");
142 fixup_pc(pt_regs, -8);
143 show_regs (pt_regs);
144 show_efi_loaded_images(pt_regs);
145 bad_mode ();
146}
147
148void do_not_used (struct pt_regs *pt_regs)
149{
150 efi_restore_gd();
151 printf ("not used\n");
152 fixup_pc(pt_regs, -8);
153 show_regs (pt_regs);
154 show_efi_loaded_images(pt_regs);
155 bad_mode ();
156}
157
158void do_fiq (struct pt_regs *pt_regs)
159{
160 efi_restore_gd();
161 printf ("fast interrupt request\n");
162 fixup_pc(pt_regs, -8);
163 show_regs (pt_regs);
164 show_efi_loaded_images(pt_regs);
165 bad_mode ();
166}
167
168void do_irq (struct pt_regs *pt_regs)
169{
170 efi_restore_gd();
171 printf ("interrupt request\n");
172 fixup_pc(pt_regs, -8);
173 show_regs (pt_regs);
174 show_efi_loaded_images(pt_regs);
175 bad_mode ();
176}
177
