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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
59static void dump_instr(struct pt_regs *regs)
60{
61 unsigned long addr = instruction_pointer(regs);
62 const int thumb = thumb_mode(regs);
63 const int width = thumb ? 4 : 8;
64 int i;
65
66 if (thumb)
67 addr &= ~1L;
68 else
69 addr &= ~3L;
70 printf("Code: ");
71 for (i = -4; i < 1 + !!thumb; i++) {
72 unsigned int val;
73
74 if (thumb)
75 val = ((u16 *)addr)[i];
76 else
77 val = ((u32 *)addr)[i];
78 printf(i == 0 ? "(%0*x) " : "%0*x ", width, val);
79 }
80 printf("\n");
81}
82
83void show_regs (struct pt_regs *regs)
84{
85 unsigned long __maybe_unused flags;
86 const char __maybe_unused *processor_modes[] = {
87 "USER_26", "FIQ_26", "IRQ_26", "SVC_26",
88 "UK4_26", "UK5_26", "UK6_26", "UK7_26",
89 "UK8_26", "UK9_26", "UK10_26", "UK11_26",
90 "UK12_26", "UK13_26", "UK14_26", "UK15_26",
91 "USER_32", "FIQ_32", "IRQ_32", "SVC_32",
92 "UK4_32", "UK5_32", "UK6_32", "ABT_32",
93 "UK8_32", "UK9_32", "HYP_32", "UND_32",
94 "UK12_32", "UK13_32", "UK14_32", "SYS_32",
95 };
96
97 flags = condition_codes (regs);
98
99 printf("pc : [<%08lx>] lr : [<%08lx>]\n",
100 instruction_pointer(regs), regs->ARM_lr);
101 if (gd->flags & GD_FLG_RELOC) {
102 printf("reloc pc : [<%08lx>] lr : [<%08lx>]\n",
103 instruction_pointer(regs) - gd->reloc_off,
104 regs->ARM_lr - gd->reloc_off);
105 }
106 printf("sp : %08lx ip : %08lx fp : %08lx\n",
107 regs->ARM_sp, regs->ARM_ip, regs->ARM_fp);
108 printf ("r10: %08lx r9 : %08lx r8 : %08lx\n",
109 regs->ARM_r10, regs->ARM_r9, regs->ARM_r8);
110 printf ("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n",
111 regs->ARM_r7, regs->ARM_r6, regs->ARM_r5, regs->ARM_r4);
112 printf ("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n",
113 regs->ARM_r3, regs->ARM_r2, regs->ARM_r1, regs->ARM_r0);
114 printf ("Flags: %c%c%c%c",
115 flags & CC_N_BIT ? 'N' : 'n',
116 flags & CC_Z_BIT ? 'Z' : 'z',
117 flags & CC_C_BIT ? 'C' : 'c', flags & CC_V_BIT ? 'V' : 'v');
118 printf (" IRQs %s FIQs %s Mode %s%s\n",
119 interrupts_enabled (regs) ? "on" : "off",
120 fast_interrupts_enabled (regs) ? "on" : "off",
121 processor_modes[processor_mode (regs)],
122 thumb_mode (regs) ? " (T)" : "");
123 dump_instr(regs);
124}
125
126
127static inline void fixup_pc(struct pt_regs *regs, int offset)
128{
129 uint32_t pc = instruction_pointer(regs) + offset;
130 regs->ARM_pc = pc | (regs->ARM_pc & PCMASK);
131}
132
133void do_undefined_instruction (struct pt_regs *pt_regs)
134{
135 efi_restore_gd();
136 printf ("undefined instruction\n");
137 fixup_pc(pt_regs, -4);
138 show_regs (pt_regs);
139 show_efi_loaded_images(pt_regs);
140 bad_mode ();
141}
142
143void do_software_interrupt (struct pt_regs *pt_regs)
144{
145 efi_restore_gd();
146 printf ("software interrupt\n");
147 fixup_pc(pt_regs, -4);
148 show_regs (pt_regs);
149 show_efi_loaded_images(pt_regs);
150 bad_mode ();
151}
152
153void do_prefetch_abort (struct pt_regs *pt_regs)
154{
155 efi_restore_gd();
156 printf ("prefetch abort\n");
157 fixup_pc(pt_regs, -8);
158 show_regs (pt_regs);
159 show_efi_loaded_images(pt_regs);
160 bad_mode ();
161}
162
163void do_data_abort (struct pt_regs *pt_regs)
164{
165 efi_restore_gd();
166 printf ("data abort\n");
167 fixup_pc(pt_regs, -8);
168 show_regs (pt_regs);
169 show_efi_loaded_images(pt_regs);
170 bad_mode ();
171}
172
173void do_not_used (struct pt_regs *pt_regs)
174{
175 efi_restore_gd();
176 printf ("not used\n");
177 fixup_pc(pt_regs, -8);
178 show_regs (pt_regs);
179 show_efi_loaded_images(pt_regs);
180 bad_mode ();
181}
182
183void do_fiq (struct pt_regs *pt_regs)
184{
185 efi_restore_gd();
186 printf ("fast interrupt request\n");
187 fixup_pc(pt_regs, -8);
188 show_regs (pt_regs);
189 show_efi_loaded_images(pt_regs);
190 bad_mode ();
191}
192
193void do_irq (struct pt_regs *pt_regs)
194{
195 efi_restore_gd();
196 printf ("interrupt request\n");
197 fixup_pc(pt_regs, -8);
198 show_regs (pt_regs);
199 show_efi_loaded_images(pt_regs);
200 bad_mode ();
201}
202
