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