2 #include "../port/lib.h"
8 static char *confname[MAXCONF];
9 static char *confval[MAXCONF];
13 extern char* rgbmask2chan(char *buf, int depth, u32int rm, u32int gm, u32int bm);
16 extern char* vesabootscreenconf(char*, char*, uchar*);
21 extern ulong multibootptr;
27 if(multibootptr == 0 || multibootptr >= MemMin)
30 multiboot = (ulong*)KADDR(multibootptr);
33 ep = cp + BOOTARGSLEN-1;
36 if((multiboot[0] & (1<<6)) != 0 && (l = multiboot[11]) >= 24){
37 cp = seprint(cp, ep, "*e820=");
38 m = KADDR(multiboot[12]);
39 while(m[0] >= 20 && m[0]+4 <= l){
42 base = ((uvlong)m[0] | (uvlong)m[1]<<32);
43 size = ((uvlong)m[2] | (uvlong)m[3]<<32);
44 cp = seprint(cp, ep, "%.1lux %.16llux %.16llux ",
45 m[4] & 0xF, base, base+size);
47 m = (ulong*)((uintptr)m + m[-1]);
52 if((multiboot[0] & (1<<12)) != 0 && multiboot[22] != 0){ /* framebuffer */
53 uchar *p = (uchar*)multiboot + 112;
54 int depth = multiboot[27] & 0xFF;
57 switch((multiboot[27]>>8) & 0xFF){
59 snprint(chan, sizeof chan, "m%d", depth);
62 rgbmask2chan(chan, depth,
63 (1UL<<p[1])-1 << p[0],
64 (1UL<<p[3])-1 << p[2],
65 (1UL<<p[5])-1 << p[4]);
67 cp = seprint(cp, ep, "*bootscreen=%dx%dx%d %s %#lux\n",
68 (int)multiboot[24]*8 / depth,
75 if((multiboot[0] & (1<<11)) != 0 && multiboot[19] != 0) /* vbe mode info */
76 cp = vesabootscreenconf(cp, ep, KADDR(multiboot[19]));
78 /* plan9.ini passed as the first module */
79 if((multiboot[0] & (1<<3)) != 0 && multiboot[5] > 0 && multiboot[6] != 0){
80 m = KADDR(multiboot[6]);
81 s = (char*)KADDR(m[0]);
83 n = utfnlen(s, m[1] - m[0]);
85 cp = seprint(cp, ep, "%.*s\n", n, s);
90 if((multiboot[0] & (1<<2)) != 0 && multiboot[4] != 0){
91 n = tokenize(KADDR(multiboot[4]), confval, MAXCONF);
93 cp = seprint(cp, ep, "%s\n", confval[i]);
103 char *cp, *line[MAXCONF], *p, *q;
108 * parse configuration args from dos file plan9.ini
110 cp = BOOTARGS; /* where b.com leaves its config */
111 cp[BOOTARGSLEN-1] = 0;
114 * Strip out '\r', change '\t' -> ' '.
117 for(q = cp; *q; q++){
126 n = getfields(cp, line, MAXCONF, 1, "\n");
127 for(i = 0; i < n; i++){
130 cp = strchr(line[i], '=');
134 for(j = 0; j < nconf; j++){
135 if(cistrcmp(confname[j], line[i]) == 0)
138 confname[j] = line[i];
150 for(i = 0; i < nconf; i++)
151 if(cistrcmp(confname[i], name) == 0)
161 for(i = 0; i < nconf; i++){
162 if(confname[i][0] != '*')
163 ksetenv(confname[i], confval[i], 0);
164 ksetenv(confname[i], confval[i], 1);
180 /* convert to name=value\n format */
189 error("kernel configuration too large");
190 memmove(BOOTARGS, p, n);
191 memset(BOOTLINE, 0, BOOTLINELEN);