^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * vectors.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 1993, 1994 by Hamish Macdonald
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * 68040 fixes by Michael Rausch
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * 68040 fixes by Martin Apel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * 68040 fixes and writeback by Richard Zidlicky
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * 68060 fixes by Roman Hodek
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * 68060 fixes by Jesper Skov
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * License. See the file COPYING in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Sets up all exception vectors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/kallsyms.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/fpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/traps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* assembler routines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) asmlinkage void system_call(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) asmlinkage void buserr(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) asmlinkage void trap(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) asmlinkage void nmihandler(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #ifdef CONFIG_M68KFPU_EMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) asmlinkage void fpu_emu(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) e_vector vectors[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* nmi handler for the Amiga */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) asm(".text\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) __ALIGN_STR "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) "nmihandler: rte");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * this must be called very early as the kernel might
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * use some instruction that are emulated on the 060
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * and so we're prepared for early probe attempts (e.g. nf_init).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void __init base_trap_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (MACH_IS_SUN3X) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) extern e_vector *sun3x_prom_vbr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) __asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* setup the exception vector table */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) __asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) if (CPU_IS_060) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* set up ISP entry points */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) vectors[VEC_UNIMPII] = unimp_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) vectors[VEC_BUSERR] = buserr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) vectors[VEC_ILLEGAL] = trap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) vectors[VEC_SYS] = system_call;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) void __init trap_init (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) for (i = VEC_SPUR; i <= VEC_INT7; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) vectors[i] = bad_inthandler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) for (i = 0; i < VEC_USER; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (!vectors[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) vectors[i] = trap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) for (i = VEC_USER; i < 256; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) vectors[i] = bad_inthandler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) #ifdef CONFIG_M68KFPU_EMU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) if (FPU_IS_EMU)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) vectors[VEC_LINE11] = fpu_emu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (CPU_IS_040 && !FPU_IS_EMU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /* set up FPSP entry points */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) asmlinkage void dz_vec(void) asm ("dz");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) asmlinkage void inex_vec(void) asm ("inex");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) asmlinkage void ovfl_vec(void) asm ("ovfl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) asmlinkage void unfl_vec(void) asm ("unfl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) asmlinkage void snan_vec(void) asm ("snan");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) asmlinkage void operr_vec(void) asm ("operr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) asmlinkage void bsun_vec(void) asm ("bsun");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) asmlinkage void fline_vec(void) asm ("fline");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) asmlinkage void unsupp_vec(void) asm ("unsupp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) vectors[VEC_FPDIVZ] = dz_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) vectors[VEC_FPIR] = inex_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) vectors[VEC_FPOVER] = ovfl_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) vectors[VEC_FPUNDER] = unfl_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) vectors[VEC_FPNAN] = snan_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) vectors[VEC_FPOE] = operr_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) vectors[VEC_FPBRUC] = bsun_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) vectors[VEC_LINE11] = fline_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) vectors[VEC_FPUNSUP] = unsupp_vec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (CPU_IS_060 && !FPU_IS_EMU) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* set up IFPSP entry points */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) vectors[VEC_FPNAN] = snan_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) vectors[VEC_FPOE] = operr_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) vectors[VEC_FPOVER] = ovfl_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) vectors[VEC_FPUNDER] = unfl_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) vectors[VEC_FPDIVZ] = dz_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) vectors[VEC_FPIR] = inex_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) vectors[VEC_LINE11] = fline_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) vectors[VEC_FPUNSUP] = unsupp_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) vectors[VEC_UNIMPEA] = effadd_vec6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* if running on an amiga, make the NMI interrupt do nothing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (MACH_IS_AMIGA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) vectors[VEC_INT7] = nmihandler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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