summaryrefslogtreecommitdiff
path: root/arch/x86/cpu/interrupts.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/cpu/interrupts.c')
-rw-r--r--arch/x86/cpu/interrupts.c619
1 files changed, 0 insertions, 619 deletions
diff --git a/arch/x86/cpu/interrupts.c b/arch/x86/cpu/interrupts.c
deleted file mode 100644
index 5f6cdd36ac1..00000000000
--- a/arch/x86/cpu/interrupts.c
+++ /dev/null
@@ -1,619 +0,0 @@
-/*
- * (C) Copyright 2008-2011
- * Graeme Russ, <graeme.russ@gmail.com>
- *
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
- *
- * Portions of this file are derived from the Linux kernel source
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <asm/cache.h>
-#include <asm/control_regs.h>
-#include <asm/i8259.h>
-#include <asm/interrupt.h>
-#include <asm/io.h>
-#include <asm/lapic.h>
-#include <asm/msr.h>
-#include <asm/processor-flags.h>
-#include <asm/processor.h>
-#include <asm/u-boot-x86.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define DECLARE_INTERRUPT(x) \
- ".globl irq_"#x"\n" \
- ".hidden irq_"#x"\n" \
- ".type irq_"#x", @function\n" \
- "irq_"#x":\n" \
- "pushl $"#x"\n" \
- "jmp irq_common_entry\n"
-
-static char *exceptions[] = {
- "Divide Error",
- "Debug",
- "NMI Interrupt",
- "Breakpoint",
- "Overflow",
- "BOUND Range Exceeded",
- "Invalid Opcode (Undefined Opcode)",
- "Device Not Avaiable (No Math Coprocessor)",
- "Double Fault",
- "Coprocessor Segment Overrun",
- "Invalid TSS",
- "Segment Not Present",
- "Stack Segment Fault",
- "General Protection",
- "Page Fault",
- "Reserved",
- "x87 FPU Floating-Point Error",
- "Alignment Check",
- "Machine Check",
- "SIMD Floating-Point Exception",
- "Virtualization Exception",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved",
- "Reserved"
-};
-
-static void dump_regs(struct irq_regs *regs)
-{
- unsigned long cs, eip, eflags;
- unsigned long cr0 = 0L, cr2 = 0L, cr3 = 0L, cr4 = 0L;
- unsigned long d0, d1, d2, d3, d6, d7;
- unsigned long sp;
-
- /*
- * Some exceptions cause an error code to be saved on the current stack
- * after the EIP value. We should extract CS/EIP/EFLAGS from different
- * position on the stack based on the exception number.
- */
- switch (regs->irq_id) {
- case EXC_DF:
- case EXC_TS:
- case EXC_NP:
- case EXC_SS:
- case EXC_GP:
- case EXC_PF:
- case EXC_AC:
- cs = regs->context.ctx2.xcs;
- eip = regs->context.ctx2.eip;
- eflags = regs->context.ctx2.eflags;
- /* We should fix up the ESP due to error code */
- regs->esp += 4;
- break;
- default:
- cs = regs->context.ctx1.xcs;
- eip = regs->context.ctx1.eip;
- eflags = regs->context.ctx1.eflags;
- break;
- }
-
- printf("EIP: %04x:[<%08lx>] EFLAGS: %08lx\n",
- (u16)cs, eip, eflags);
- if (gd->flags & GD_FLG_RELOC)
- printf("Original EIP :[<%08lx>]\n", eip - gd->reloc_off);
-
- printf("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printf("ESI: %08lx EDI: %08lx EBP: %08lx ESP: %08lx\n",
- regs->esi, regs->edi, regs->ebp, regs->esp);
- printf(" DS: %04x ES: %04x FS: %04x GS: %04x SS: %04x\n",
- (u16)regs->xds, (u16)regs->xes, (u16)regs->xfs,
- (u16)regs->xgs, (u16)regs->xss);
-
- cr0 = read_cr0();
- cr2 = read_cr2();
- cr3 = read_cr3();
- cr4 = read_cr4();
-
- printf("CR0: %08lx CR2: %08lx CR3: %08lx CR4: %08lx\n",
- cr0, cr2, cr3, cr4);
-
- d0 = get_debugreg(0);
- d1 = get_debugreg(1);
- d2 = get_debugreg(2);
- d3 = get_debugreg(3);
-
- printf("DR0: %08lx DR1: %08lx DR2: %08lx DR3: %08lx\n",
- d0, d1, d2, d3);
-
- d6 = get_debugreg(6);
- d7 = get_debugreg(7);
- printf("DR6: %08lx DR7: %08lx\n",
- d6, d7);
-
- printf("Stack:\n");
- sp = regs->esp;
-
- sp += 64;
-
- while (sp > (regs->esp - 16)) {
- if (sp == regs->esp)
- printf("--->");
- else
- printf(" ");
- printf("0x%8.8lx : 0x%8.8lx\n", sp, (ulong)readl(sp));
- sp -= 4;
- }
-}
-
-static void do_exception(struct irq_regs *regs)
-{
- printf("%s\n", exceptions[regs->irq_id]);
- dump_regs(regs);
- hang();
-}
-
-struct idt_entry {
- u16 base_low;
- u16 selector;
- u8 res;
- u8 access;
- u16 base_high;
-} __packed;
-
-struct desc_ptr {
- unsigned short size;
- unsigned long address;
-} __packed;
-
-struct idt_entry idt[256] __aligned(16);
-
-struct desc_ptr idt_ptr;
-
-static inline void load_idt(const struct desc_ptr *dtr)
-{
- asm volatile("cs lidt %0" : : "m" (*dtr));
-}
-
-void set_vector(u8 intnum, void *routine)
-{
- idt[intnum].base_high = (u16)((ulong)(routine) >> 16);
- idt[intnum].base_low = (u16)((ulong)(routine) & 0xffff);
-}
-
-/*
- * Ideally these would be defined static to avoid a checkpatch warning, but
- * the compiler cannot see them in the inline asm and complains that they
- * aren't defined
- */
-void irq_0(void);
-void irq_1(void);
-
-int cpu_init_interrupts(void)
-{
- int i;
-
- int irq_entry_size = irq_1 - irq_0;
- void *irq_entry = (void *)irq_0;
-
- /* Setup the IDT */
- for (i = 0; i < 256; i++) {
- idt[i].access = 0x8e;
- idt[i].res = 0;
- idt[i].selector = X86_GDT_ENTRY_32BIT_CS * X86_GDT_ENTRY_SIZE;
- set_vector(i, irq_entry);
- irq_entry += irq_entry_size;
- }
-
- idt_ptr.size = 256 * 8 - 1;
- idt_ptr.address = (unsigned long) idt;
-
- load_idt(&idt_ptr);
-
- return 0;
-}
-
-void *x86_get_idt(void)
-{
- return &idt_ptr;
-}
-
-void __do_irq(int irq)
-{
- printf("Unhandled IRQ : %d\n", irq);
-}
-void do_irq(int irq) __attribute__((weak, alias("__do_irq")));
-
-void enable_interrupts(void)
-{
- asm("sti\n");
-}
-
-int disable_interrupts(void)
-{
- long flags;
-
-#ifdef CONFIG_X86_64
- asm volatile ("pushfq ; popq %0 ; cli\n" : "=g" (flags) : );
-#else
- asm volatile ("pushfl ; popl %0 ; cli\n" : "=g" (flags) : );
-#endif
- return flags & X86_EFLAGS_IF;
-}
-
-int interrupt_init(void)
-{
- struct udevice *dev;
- int ret;
-
- /* Try to set up the interrupt router, but don't require one */
- ret = uclass_first_device_err(UCLASS_IRQ, &dev);
- if (ret && ret != -ENODEV)
- return ret;
-
- /*
- * When running as an EFI application we are not in control of
- * interrupts and should leave them alone.
- */
-#ifndef CONFIG_EFI_APP
- /* Just in case... */
- disable_interrupts();
-
-#ifdef CONFIG_I8259_PIC
- /* Initialize the master/slave i8259 pic */
- i8259_init();
-#endif
-
- lapic_setup();
-
- /* Initialize core interrupt and exception functionality of CPU */
- cpu_init_interrupts();
-
- /*
- * It is now safe to enable interrupts.
- *
- * TODO(sjg@chromium.org): But we don't handle these correctly when
- * booted from EFI.
- */
- if (ll_boot_init())
- enable_interrupts();
-#endif
-
- return 0;
-}
-
-/* IRQ Low-Level Service Routine */
-void irq_llsr(struct irq_regs *regs)
-{
- /*
- * For detailed description of each exception, refer to:
- * Intel® 64 and IA-32 Architectures Software Developer's Manual
- * Volume 1: Basic Architecture
- * Order Number: 253665-029US, November 2008
- * Table 6-1. Exceptions and Interrupts
- */
- if (regs->irq_id < 32) {
- /* Architecture defined exception */
- do_exception(regs);
- } else {
- /* Hardware or User IRQ */
- do_irq(regs->irq_id);
- }
-}
-
-/*
- * OK - This looks really horrible, but it serves a purpose - It helps create
- * fully relocatable code.
- * - The call to irq_llsr will be a relative jump
- * - The IRQ entries will be guaranteed to be in order
- * Interrupt entries are now very small (a push and a jump) but they are
- * now slower (all registers pushed on stack which provides complete
- * crash dumps in the low level handlers
- *
- * Interrupt Entry Point:
- * - Interrupt has caused eflags, CS and EIP to be pushed
- * - Interrupt Vector Handler has pushed orig_eax
- * - pt_regs.esp needs to be adjusted by 40 bytes:
- * 12 bytes pushed by CPU (EFLAGSF, CS, EIP)
- * 4 bytes pushed by vector handler (irq_id)
- * 24 bytes pushed before SP (SS, GS, FS, ES, DS, EAX)
- * NOTE: Only longs are pushed on/popped off the stack!
- */
-asm(".globl irq_common_entry\n" \
- ".hidden irq_common_entry\n" \
- ".type irq_common_entry, @function\n" \
- "irq_common_entry:\n" \
- "cld\n" \
- "pushl %ss\n" \
- "pushl %gs\n" \
- "pushl %fs\n" \
- "pushl %es\n" \
- "pushl %ds\n" \
- "pushl %eax\n" \
- "movl %esp, %eax\n" \
- "addl $40, %eax\n" \
- "pushl %eax\n" \
- "pushl %ebp\n" \
- "pushl %edi\n" \
- "pushl %esi\n" \
- "pushl %edx\n" \
- "pushl %ecx\n" \
- "pushl %ebx\n" \
- "mov %esp, %eax\n" \
- "call irq_llsr\n" \
- "popl %ebx\n" \
- "popl %ecx\n" \
- "popl %edx\n" \
- "popl %esi\n" \
- "popl %edi\n" \
- "popl %ebp\n" \
- "popl %eax\n" \
- "popl %eax\n" \
- "popl %ds\n" \
- "popl %es\n" \
- "popl %fs\n" \
- "popl %gs\n" \
- "popl %ss\n" \
- "add $4, %esp\n" \
- "iret\n" \
- DECLARE_INTERRUPT(0) \
- DECLARE_INTERRUPT(1) \
- DECLARE_INTERRUPT(2) \
- DECLARE_INTERRUPT(3) \
- DECLARE_INTERRUPT(4) \
- DECLARE_INTERRUPT(5) \
- DECLARE_INTERRUPT(6) \
- DECLARE_INTERRUPT(7) \
- DECLARE_INTERRUPT(8) \
- DECLARE_INTERRUPT(9) \
- DECLARE_INTERRUPT(10) \
- DECLARE_INTERRUPT(11) \
- DECLARE_INTERRUPT(12) \
- DECLARE_INTERRUPT(13) \
- DECLARE_INTERRUPT(14) \
- DECLARE_INTERRUPT(15) \
- DECLARE_INTERRUPT(16) \
- DECLARE_INTERRUPT(17) \
- DECLARE_INTERRUPT(18) \
- DECLARE_INTERRUPT(19) \
- DECLARE_INTERRUPT(20) \
- DECLARE_INTERRUPT(21) \
- DECLARE_INTERRUPT(22) \
- DECLARE_INTERRUPT(23) \
- DECLARE_INTERRUPT(24) \
- DECLARE_INTERRUPT(25) \
- DECLARE_INTERRUPT(26) \
- DECLARE_INTERRUPT(27) \
- DECLARE_INTERRUPT(28) \
- DECLARE_INTERRUPT(29) \
- DECLARE_INTERRUPT(30) \
- DECLARE_INTERRUPT(31) \
- DECLARE_INTERRUPT(32) \
- DECLARE_INTERRUPT(33) \
- DECLARE_INTERRUPT(34) \
- DECLARE_INTERRUPT(35) \
- DECLARE_INTERRUPT(36) \
- DECLARE_INTERRUPT(37) \
- DECLARE_INTERRUPT(38) \
- DECLARE_INTERRUPT(39) \
- DECLARE_INTERRUPT(40) \
- DECLARE_INTERRUPT(41) \
- DECLARE_INTERRUPT(42) \
- DECLARE_INTERRUPT(43) \
- DECLARE_INTERRUPT(44) \
- DECLARE_INTERRUPT(45) \
- DECLARE_INTERRUPT(46) \
- DECLARE_INTERRUPT(47) \
- DECLARE_INTERRUPT(48) \
- DECLARE_INTERRUPT(49) \
- DECLARE_INTERRUPT(50) \
- DECLARE_INTERRUPT(51) \
- DECLARE_INTERRUPT(52) \
- DECLARE_INTERRUPT(53) \
- DECLARE_INTERRUPT(54) \
- DECLARE_INTERRUPT(55) \
- DECLARE_INTERRUPT(56) \
- DECLARE_INTERRUPT(57) \
- DECLARE_INTERRUPT(58) \
- DECLARE_INTERRUPT(59) \
- DECLARE_INTERRUPT(60) \
- DECLARE_INTERRUPT(61) \
- DECLARE_INTERRUPT(62) \
- DECLARE_INTERRUPT(63) \
- DECLARE_INTERRUPT(64) \
- DECLARE_INTERRUPT(65) \
- DECLARE_INTERRUPT(66) \
- DECLARE_INTERRUPT(67) \
- DECLARE_INTERRUPT(68) \
- DECLARE_INTERRUPT(69) \
- DECLARE_INTERRUPT(70) \
- DECLARE_INTERRUPT(71) \
- DECLARE_INTERRUPT(72) \
- DECLARE_INTERRUPT(73) \
- DECLARE_INTERRUPT(74) \
- DECLARE_INTERRUPT(75) \
- DECLARE_INTERRUPT(76) \
- DECLARE_INTERRUPT(77) \
- DECLARE_INTERRUPT(78) \
- DECLARE_INTERRUPT(79) \
- DECLARE_INTERRUPT(80) \
- DECLARE_INTERRUPT(81) \
- DECLARE_INTERRUPT(82) \
- DECLARE_INTERRUPT(83) \
- DECLARE_INTERRUPT(84) \
- DECLARE_INTERRUPT(85) \
- DECLARE_INTERRUPT(86) \
- DECLARE_INTERRUPT(87) \
- DECLARE_INTERRUPT(88) \
- DECLARE_INTERRUPT(89) \
- DECLARE_INTERRUPT(90) \
- DECLARE_INTERRUPT(91) \
- DECLARE_INTERRUPT(92) \
- DECLARE_INTERRUPT(93) \
- DECLARE_INTERRUPT(94) \
- DECLARE_INTERRUPT(95) \
- DECLARE_INTERRUPT(97) \
- DECLARE_INTERRUPT(96) \
- DECLARE_INTERRUPT(98) \
- DECLARE_INTERRUPT(99) \
- DECLARE_INTERRUPT(100) \
- DECLARE_INTERRUPT(101) \
- DECLARE_INTERRUPT(102) \
- DECLARE_INTERRUPT(103) \
- DECLARE_INTERRUPT(104) \
- DECLARE_INTERRUPT(105) \
- DECLARE_INTERRUPT(106) \
- DECLARE_INTERRUPT(107) \
- DECLARE_INTERRUPT(108) \
- DECLARE_INTERRUPT(109) \
- DECLARE_INTERRUPT(110) \
- DECLARE_INTERRUPT(111) \
- DECLARE_INTERRUPT(112) \
- DECLARE_INTERRUPT(113) \
- DECLARE_INTERRUPT(114) \
- DECLARE_INTERRUPT(115) \
- DECLARE_INTERRUPT(116) \
- DECLARE_INTERRUPT(117) \
- DECLARE_INTERRUPT(118) \
- DECLARE_INTERRUPT(119) \
- DECLARE_INTERRUPT(120) \
- DECLARE_INTERRUPT(121) \
- DECLARE_INTERRUPT(122) \
- DECLARE_INTERRUPT(123) \
- DECLARE_INTERRUPT(124) \
- DECLARE_INTERRUPT(125) \
- DECLARE_INTERRUPT(126) \
- DECLARE_INTERRUPT(127) \
- DECLARE_INTERRUPT(128) \
- DECLARE_INTERRUPT(129) \
- DECLARE_INTERRUPT(130) \
- DECLARE_INTERRUPT(131) \
- DECLARE_INTERRUPT(132) \
- DECLARE_INTERRUPT(133) \
- DECLARE_INTERRUPT(134) \
- DECLARE_INTERRUPT(135) \
- DECLARE_INTERRUPT(136) \
- DECLARE_INTERRUPT(137) \
- DECLARE_INTERRUPT(138) \
- DECLARE_INTERRUPT(139) \
- DECLARE_INTERRUPT(140) \
- DECLARE_INTERRUPT(141) \
- DECLARE_INTERRUPT(142) \
- DECLARE_INTERRUPT(143) \
- DECLARE_INTERRUPT(144) \
- DECLARE_INTERRUPT(145) \
- DECLARE_INTERRUPT(146) \
- DECLARE_INTERRUPT(147) \
- DECLARE_INTERRUPT(148) \
- DECLARE_INTERRUPT(149) \
- DECLARE_INTERRUPT(150) \
- DECLARE_INTERRUPT(151) \
- DECLARE_INTERRUPT(152) \
- DECLARE_INTERRUPT(153) \
- DECLARE_INTERRUPT(154) \
- DECLARE_INTERRUPT(155) \
- DECLARE_INTERRUPT(156) \
- DECLARE_INTERRUPT(157) \
- DECLARE_INTERRUPT(158) \
- DECLARE_INTERRUPT(159) \
- DECLARE_INTERRUPT(160) \
- DECLARE_INTERRUPT(161) \
- DECLARE_INTERRUPT(162) \
- DECLARE_INTERRUPT(163) \
- DECLARE_INTERRUPT(164) \
- DECLARE_INTERRUPT(165) \
- DECLARE_INTERRUPT(166) \
- DECLARE_INTERRUPT(167) \
- DECLARE_INTERRUPT(168) \
- DECLARE_INTERRUPT(169) \
- DECLARE_INTERRUPT(170) \
- DECLARE_INTERRUPT(171) \
- DECLARE_INTERRUPT(172) \
- DECLARE_INTERRUPT(173) \
- DECLARE_INTERRUPT(174) \
- DECLARE_INTERRUPT(175) \
- DECLARE_INTERRUPT(176) \
- DECLARE_INTERRUPT(177) \
- DECLARE_INTERRUPT(178) \
- DECLARE_INTERRUPT(179) \
- DECLARE_INTERRUPT(180) \
- DECLARE_INTERRUPT(181) \
- DECLARE_INTERRUPT(182) \
- DECLARE_INTERRUPT(183) \
- DECLARE_INTERRUPT(184) \
- DECLARE_INTERRUPT(185) \
- DECLARE_INTERRUPT(186) \
- DECLARE_INTERRUPT(187) \
- DECLARE_INTERRUPT(188) \
- DECLARE_INTERRUPT(189) \
- DECLARE_INTERRUPT(190) \
- DECLARE_INTERRUPT(191) \
- DECLARE_INTERRUPT(192) \
- DECLARE_INTERRUPT(193) \
- DECLARE_INTERRUPT(194) \
- DECLARE_INTERRUPT(195) \
- DECLARE_INTERRUPT(196) \
- DECLARE_INTERRUPT(197) \
- DECLARE_INTERRUPT(198) \
- DECLARE_INTERRUPT(199) \
- DECLARE_INTERRUPT(200) \
- DECLARE_INTERRUPT(201) \
- DECLARE_INTERRUPT(202) \
- DECLARE_INTERRUPT(203) \
- DECLARE_INTERRUPT(204) \
- DECLARE_INTERRUPT(205) \
- DECLARE_INTERRUPT(206) \
- DECLARE_INTERRUPT(207) \
- DECLARE_INTERRUPT(208) \
- DECLARE_INTERRUPT(209) \
- DECLARE_INTERRUPT(210) \
- DECLARE_INTERRUPT(211) \
- DECLARE_INTERRUPT(212) \
- DECLARE_INTERRUPT(213) \
- DECLARE_INTERRUPT(214) \
- DECLARE_INTERRUPT(215) \
- DECLARE_INTERRUPT(216) \
- DECLARE_INTERRUPT(217) \
- DECLARE_INTERRUPT(218) \
- DECLARE_INTERRUPT(219) \
- DECLARE_INTERRUPT(220) \
- DECLARE_INTERRUPT(221) \
- DECLARE_INTERRUPT(222) \
- DECLARE_INTERRUPT(223) \
- DECLARE_INTERRUPT(224) \
- DECLARE_INTERRUPT(225) \
- DECLARE_INTERRUPT(226) \
- DECLARE_INTERRUPT(227) \
- DECLARE_INTERRUPT(228) \
- DECLARE_INTERRUPT(229) \
- DECLARE_INTERRUPT(230) \
- DECLARE_INTERRUPT(231) \
- DECLARE_INTERRUPT(232) \
- DECLARE_INTERRUPT(233) \
- DECLARE_INTERRUPT(234) \
- DECLARE_INTERRUPT(235) \
- DECLARE_INTERRUPT(236) \
- DECLARE_INTERRUPT(237) \
- DECLARE_INTERRUPT(238) \
- DECLARE_INTERRUPT(239) \
- DECLARE_INTERRUPT(240) \
- DECLARE_INTERRUPT(241) \
- DECLARE_INTERRUPT(242) \
- DECLARE_INTERRUPT(243) \
- DECLARE_INTERRUPT(244) \
- DECLARE_INTERRUPT(245) \
- DECLARE_INTERRUPT(246) \
- DECLARE_INTERRUPT(247) \
- DECLARE_INTERRUPT(248) \
- DECLARE_INTERRUPT(249) \
- DECLARE_INTERRUPT(250) \
- DECLARE_INTERRUPT(251) \
- DECLARE_INTERRUPT(252) \
- DECLARE_INTERRUPT(253) \
- DECLARE_INTERRUPT(254) \
- DECLARE_INTERRUPT(255));
generated by cgit v1.2.3 (git 2.0.4) at 2025-10-31 08:17:30 +0000