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      1 /*	$NetBSD: prekern.h,v 1.25 2022/08/21 14:05:52 mlelstv Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2017-2020 The NetBSD Foundation, Inc. All rights reserved.
      5  *
      6  * This code is derived from software contributed to The NetBSD Foundation
      7  * by Maxime Villard.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     28  * POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 #include <sys/param.h>
     33 #include <sys/stdbool.h>
     34 #include <lib/libkern/libkern.h>
     35 
     36 #include <machine/pmap.h>
     37 #include <machine/pte.h>
     38 
     39 #include <x86/bootspace.h>
     40 
     41 #include "pdir.h"
     42 #include "redef.h"
     43 
     44 #define ASSERT(a) if (!(a)) fatal("ASSERT: " #a);
     45 typedef uint64_t pte_prot_t;
     46 #define WHITE_ON_BLACK 0x07
     47 #define RED_ON_BLACK 0x04
     48 #define GREEN_ON_BLACK 0x02
     49 #define YELLOW_ON_BLACK 0x0e
     50 
     51 #define HEAD_WINDOW_BASE	(KERNBASE - NBPD_L3)
     52 #define HEAD_WINDOW_SIZE	NBPD_L3
     53 
     54 #define KASLR_WINDOW_BASE	KERNBASE		/* max - 2GB */
     55 #define KASLR_WINDOW_SIZE	(2LLU * (1 << 30))	/* 2GB */
     56 
     57 typedef enum
     58 {
     59 	STATE_NORMAL = 0,
     60 	STATE_ERROR,
     61 	STATE_WARNING
     62 } state_t;
     63 
     64 /* -------------------------------------------------------------------------- */
     65 
     66 /* console.c */
     67 void init_cons(void);
     68 void print_ext(int, char *);
     69 void print(char *);
     70 void print_state(state_t, char *);
     71 void print_banner(void);
     72 
     73 /* elf.c */
     74 size_t elf_get_head_size(vaddr_t);
     75 void elf_build_head(vaddr_t);
     76 void elf_fixup_boot(vaddr_t, paddr_t);
     77 void elf_map_sections(void);
     78 void elf_build_info(void);
     79 vaddr_t elf_kernel_reloc(void);
     80 
     81 /* locore.S */
     82 void cpuid(uint32_t, uint32_t, uint32_t *);
     83 void lidt(void *);
     84 uint64_t rdtsc(void);
     85 int rdseed(uint64_t *);
     86 int rdrand(uint64_t *);
     87 void jump_kernel(vaddr_t);
     88 
     89 /* mm.c */
     90 void mm_init(paddr_t);
     91 void mm_bootspace_mprotect(void);
     92 vaddr_t mm_map_segment(int, paddr_t, size_t, size_t);
     93 void mm_map_kernel(void);
     94 
     95 /* prekern.c */
     96 void fatal(char *);
     97 
     98 /* prng.c */
     99 void prng_init(void);
    100 void prng_get_rand(void *, size_t);
    101