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pascal@19515
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1 // This file is distributed under GPL
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pascal@19515
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2 //
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pascal@19515
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3 // LINLD main() lives here
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pascal@19515
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4
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pascal@19515
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5 #include "crtl.h"
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pascal@19515
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6 #include "common.h"
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pascal@19515
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7
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pascal@19515
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8 const char* kernel_name = "bzImage";
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pascal@19515
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9 const char* initrd_name;
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pascal@19515
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10 const char* cmdline = "auto";
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pascal@20528
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11 u32 root_dev;
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pascal@20528
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12 u32 vid_mode; // -3 = ask
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pascal@20528
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13 // -2 = Extended VGA
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pascal@20528
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14 // -1 = Normal VGA
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pascal@20528
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15 // n = as "n" was pressed
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pascal@20528
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16 u32 topmem;
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pascal@19515
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17
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pascal@19515
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18 inline void syntax() {
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pascal@19515
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19 die("Syntax:" NL
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pascal@19515
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20 "LINLD [image=file] [initrd=files] [vga=mode] [root=num] [mem=max] [cl=cmdline]" NL
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pascal@19515
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21 "vga mode: ask,extended,normal or dec/oct/hex number" NL
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pascal@19538
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22 "-f force" NL
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pascal@19515
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23 "Defaults:" NL
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pascal@19515
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24 "\timage=bzImage" NL
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pascal@19515
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25 "\tinitrd,vga,root=(void)" NL
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pascal@19515
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26 "\tmem=256m" NL
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pascal@19515
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27 "\tcl=auto" NL
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pascal@19580
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28 "\t-b 1088k" NL
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pascal@19515
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29 "Use quotes: \"cl=...\" if you need spaces in cmdline" NL
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pascal@19538
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30 "Use cl=@filename to get it from a file"
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pascal@19515
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31 #if 1
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pascal@19515
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32 NL NL "Examples:" NL
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pascal@20451
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33 "\tLINLD -f -b 64m initrd=rootfs4.gz,rootfs3.gz,rootfs2.gz,rootfs1.gz \"cl=rw root=/dev/null video=-32\""
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pascal@20451
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34 NL NL "\tLINLD image=memtest"
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pascal@19515
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35 #endif
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pascal@19515
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36 );
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pascal@19515
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37 }
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pascal@19515
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38
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pascal@20453
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39 static char buf_cmdline[128];
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pascal@19515
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40 int main(int argc, char *argv[]) {
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pascal@19571
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41
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pascal@19571
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42 (void) argc;
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pascal@19571
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43
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pascal@19515
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44 // Believe it or not - this enables A20
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pascal@19515
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45 // on my box! Must be DOS in HMA... -vda
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pascal@19515
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46 puts("LINLD v" VERSION_STR "+");
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pascal@19515
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47
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pascal@19538
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48 // Parse command line
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pascal@19571
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49 if (argv[1]) {for (char i=0;;) {
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pascal@19571
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50 char *s;
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pascal@19580
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51 next:
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pascal@19571
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52 argv++;
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pascal@19571
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53 s=*argv;
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pascal@19538
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54 i++;
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pascal@19538
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55 if (!s) {
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pascal@19538
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56 puts(load_kernel());
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pascal@19538
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57 load_initrd();
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pascal@19538
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58 boot_kernel();
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pascal@19538
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59 }
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pascal@19515
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60 if(strhead(s,"image=") == 0) {
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pascal@19538
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61 s+=6;
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pascal@19825
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62 set_kernel_name:
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pascal@19538
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63 kernel_name=s;
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pascal@19515
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64 }
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pascal@19515
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65 else if(strhead(s,"initrd=") == 0) {
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pascal@19538
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66 s+=7;
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pascal@19538
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67 initrd_name=s;
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pascal@19538
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68 }
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pascal@19538
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69 else if(strhead(s,"vga=") == 0) {
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pascal@19538
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70 s+=4;
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pascal@19538
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71 vid_mode = strtol(s); // support normal, extended & ask
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pascal@19515
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72 }
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pascal@19580
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73 else switch (*(u16 *)s|0x2002) {
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pascal@19580
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74 case 0x662F: // -F /f
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pascal@19580
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75 skip_alloc++;
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pascal@19580
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76 goto next;
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pascal@19580
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77 case 0x622F: // -B /b
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pascal@19580
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78 argv++;
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pascal@19580
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79 base_himem = strtol(*argv);
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pascal@19580
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80 goto next;
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pascal@19580
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81 default:
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pascal@19580
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82 if(strhead(s,"cl=") == 0) {
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pascal@19538
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83 cmdline=s+=3;
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pascal@19538
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84 if (*s == '@') {
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pascal@19538
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85 static struct image_himem image;
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pascal@19538
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86 char c;
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pascal@19538
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87
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pascal@19538
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88 s++;
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pascal@19538
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89 image.errmsg = "Error in cl=@file";
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pascal@19538
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90 open_image(s, &image);
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pascal@19538
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91 cmdline=s=(char *)malloc_or_die(image.size);
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pascal@19538
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92 s+=image.size;
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pascal@19538
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93 read(image.fd, (void *)cmdline, image.size);
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pascal@19538
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94 // Strip any trailing cr/lf
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pascal@19538
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95 c='\0';
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pascal@19538
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96 do {
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pascal@19538
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97 // Replace all other cr/lfs with spaces
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pascal@19538
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98 s--;
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pascal@19538
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99 if(*s>=' ') c=' ';
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pascal@19538
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100 else *s = c;
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pascal@19538
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101 } while (s>cmdline);
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pascal@19515
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102 puts("Kernel command line:");
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pascal@19515
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103 puts(cmdline);
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pascal@19515
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104 }
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pascal@19515
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105 }
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pascal@19515
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106 else if(strhead(s,"root=") == 0) {
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pascal@19538
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107 s+=5;
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pascal@19538
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108 root_dev = strtol(s);
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pascal@19538
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109 goto addincmdline;
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pascal@19515
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110 }
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pascal@19515
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111 else if(strhead(s,"mem=") == 0) {
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pascal@19538
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112 s+=4;
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pascal@19538
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113 topmem = strtol(s);
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pascal@19538
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114 goto addincmdline;
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pascal@19515
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115 }
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pascal@20453
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116 else if(cmdline == (const char *) buf_cmdline + 1) {
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pascal@19538
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117 addincmdline:
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pascal@20453
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118 strcatb(buf_cmdline,*argv);
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pascal@19515
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119 }
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pascal@19538
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120 else if(i == 1 && fileattr(s) != -1) {
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pascal@20453
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121 cmdline = (const char *) buf_cmdline + 1;
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pascal@19825
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122 goto set_kernel_name;
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pascal@19538
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123 }
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pascal@19538
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124 else
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pascal@19571
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125 break;
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pascal@19580
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126 }
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pascal@19515
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127 }}
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pascal@19571
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128 syntax();
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pascal@19515
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129
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pascal@19515
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130 // Let compiler be happy
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pascal@19571
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131 return _AX;
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pascal@19515
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132 }
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