wok-6.x annotate linld/stuff/src/LINLD.CPP @ rev 19571

linld: large image support with VCPI
author Pascal Bellard <pascal.bellard@slitaz.org>
date Thu Dec 22 21:06:17 2016 +0100 (2016-12-22)
parents 7f92b23984dc
children 23fc786c04e8
rev   line source
pascal@19515 1 // This file is distributed under GPL
pascal@19515 2 //
pascal@19515 3 // LINLD main() lives here
pascal@19515 4
pascal@19515 5 #include "crtl.h"
pascal@19515 6 #include "common.h"
pascal@19515 7
pascal@19515 8 const char* kernel_name = "bzImage";
pascal@19515 9 const char* initrd_name;
pascal@19515 10 const char* cmdline = "auto";
pascal@19515 11 u16 root_dev;
pascal@19515 12 u16 vid_mode; // -3 = ask
pascal@19515 13 // -2 = Extended VGA
pascal@19515 14 // -1 = Normal VGA
pascal@19515 15 // n = as "n" was pressed
pascal@19515 16
pascal@19515 17 inline void syntax() {
pascal@19515 18 die("Syntax:" NL
pascal@19515 19 "LINLD [image=file] [initrd=files] [vga=mode] [root=num] [mem=max] [cl=cmdline]" NL
pascal@19515 20 "vga mode: ask,extended,normal or dec/oct/hex number" NL
pascal@19538 21 "-f force" NL
pascal@19515 22 "Defaults:" NL
pascal@19515 23 "\timage=bzImage" NL
pascal@19515 24 "\tinitrd,vga,root=(void)" NL
pascal@19515 25 "\tmem=256m" NL
pascal@19515 26 "\tcl=auto" NL
pascal@19515 27 "Use quotes: \"cl=...\" if you need spaces in cmdline" NL
pascal@19538 28 "Use cl=@filename to get it from a file"
pascal@19515 29 #if 1
pascal@19515 30 NL NL "Examples:" NL
pascal@19515 31 "\tlinld initrd=rootfs4.gz,rootfs3.gz,rootfs2.gz,rootfs1.gz \"cl=rw root=/dev/null video=-32\""
pascal@19515 32 NL NL "\tlinld image=memtest"
pascal@19515 33 #endif
pascal@19515 34 );
pascal@19515 35 }
pascal@19515 36
pascal@19538 37 static char _cmdline[256];
pascal@19515 38 int main(int argc, char *argv[]) {
pascal@19571 39
pascal@19571 40 (void) argc;
pascal@19571 41
pascal@19515 42 // Believe it or not - this enables A20
pascal@19515 43 // on my box! Must be DOS in HMA... -vda
pascal@19515 44 puts("LINLD v" VERSION_STR "+");
pascal@19515 45
pascal@19538 46 // Parse command line
pascal@19571 47 if (argv[1]) {for (char i=0;;) {
pascal@19571 48 char *s;
pascal@19571 49 argv++;
pascal@19571 50 s=*argv;
pascal@19538 51 i++;
pascal@19538 52 if (!s) {
pascal@19538 53 puts(load_kernel());
pascal@19538 54 load_initrd();
pascal@19538 55 boot_kernel();
pascal@19538 56 }
pascal@19515 57 if(strhead(s,"image=") == 0) {
pascal@19538 58 s+=6;
pascal@19538 59 kernel_name=s;
pascal@19515 60 }
pascal@19515 61 else if(strhead(s,"initrd=") == 0) {
pascal@19538 62 s+=7;
pascal@19538 63 initrd_name=s;
pascal@19538 64 }
pascal@19538 65 else if((*(u16 *)s|0x2002) == 0x662F) { // -F /f
pascal@19538 66 extern int skip_xmmalloc;
pascal@19538 67 skip_xmmalloc++;
pascal@19538 68 }
pascal@19538 69 else if(strhead(s,"vga=") == 0) {
pascal@19538 70 s+=4;
pascal@19538 71 vid_mode = strtol(s); // support normal, extended & ask
pascal@19515 72 }
pascal@19515 73 else if(strhead(s,"cl=") == 0) {
pascal@19538 74 cmdline=s+=3;
pascal@19538 75 if (*s == '@') {
pascal@19538 76 static struct image_himem image;
pascal@19538 77 char c;
pascal@19538 78
pascal@19538 79 s++;
pascal@19538 80 image.errmsg = "Error in cl=@file";
pascal@19538 81 open_image(s, &image);
pascal@19538 82 cmdline=s=(char *)malloc_or_die(image.size);
pascal@19538 83 s+=image.size;
pascal@19538 84 read(image.fd, (void *)cmdline, image.size);
pascal@19538 85 // Strip any trailing cr/lf
pascal@19538 86 c='\0';
pascal@19538 87 do {
pascal@19538 88 // Replace all other cr/lfs with spaces
pascal@19538 89 s--;
pascal@19538 90 if(*s>=' ') c=' ';
pascal@19538 91 else *s = c;
pascal@19538 92 } while (s>cmdline);
pascal@19515 93 puts("Kernel command line:");
pascal@19515 94 puts(cmdline);
pascal@19515 95 }
pascal@19515 96 }
pascal@19515 97 else if(strhead(s,"root=") == 0) {
pascal@19538 98 s+=5;
pascal@19538 99 root_dev = strtol(s);
pascal@19538 100 goto addincmdline;
pascal@19515 101 }
pascal@19515 102 else if(strhead(s,"mem=") == 0) {
pascal@19538 103 s+=4;
pascal@19538 104 topmem = strtol(s);
pascal@19538 105 goto addincmdline;
pascal@19515 106 }
pascal@19538 107 else if(cmdline == (const char *) _cmdline) {
pascal@19538 108 addincmdline:
pascal@19538 109 strcatb(_cmdline,*argv);
pascal@19515 110 }
pascal@19538 111 else if(i == 1 && fileattr(s) != -1) {
pascal@19538 112 kernel_name = s;
pascal@19538 113 cmdline = (const char *) _cmdline;
pascal@19538 114 }
pascal@19538 115 else
pascal@19571 116 break;
pascal@19515 117 }}
pascal@19571 118 syntax();
pascal@19515 119
pascal@19515 120 // Let compiler be happy
pascal@19571 121 return _AX;
pascal@19515 122 }