#include "pool.h"
#include "reboot.h"
-/*
- * Where configuration info is left for the loaded programme.
- * This will turn into a structure as more is done by the boot loader
- * (e.g. why parse the .ini file twice?).
- * There are 3584 bytes available at CONFADDR.
- */
-#define BOOTLINE ((char*)CONFADDR)
-#define BOOTLINELEN 64
-#define BOOTARGS ((char*)(CONFADDR+BOOTLINELEN))
-#define BOOTARGSLEN (4096-0x200-BOOTLINELEN)
-#define MAXCONF 64
-
Conf conf;
-char *confname[MAXCONF];
-char *confval[MAXCONF];
-int nconf;
int delaylink;
int idle_spin;
extern void (*i8237alloc)(void);
extern void bootscreeninit(void);
-static void
-multibootargs(void)
-{
- extern ulong multibootptr;
- ulong *multiboot;
- char *cp, *ep;
- ulong *m, l;
-
- if(multibootptr == 0)
- return;
-
- multiboot = (ulong*)KADDR(multibootptr);
- /* command line */
- if((multiboot[0] & (1<<2)) != 0)
- strncpy(BOOTLINE, KADDR(multiboot[4]), BOOTLINELEN-1);
-
- cp = BOOTARGS;
- ep = cp + BOOTARGSLEN-1;
-
- /* memory map */
- if((multiboot[0] & (1<<6)) != 0 && (l = multiboot[11]) >= 24){
- cp = seprint(cp, ep, "*e820=");
- m = KADDR(multiboot[12]);
- while(m[0] >= 20 && m[0]+4 <= l){
- uvlong base, size;
- m++;
- base = ((uvlong)m[0] | (uvlong)m[1]<<32);
- size = ((uvlong)m[2] | (uvlong)m[3]<<32);
- cp = seprint(cp, ep, "%.1lux %.16llux %.16llux ",
- m[4] & 0xF, base, base+size);
- l -= m[-1]+4;
- m = (ulong*)((uintptr)m + m[-1]);
- }
- cp[-1] = '\n';
- }
-
- /* plan9.ini passed as the first module */
- if((multiboot[0] & (1<<3)) != 0 && multiboot[5] > 0){
- m = KADDR(multiboot[6]);
- l = m[1] - m[0];
- m = KADDR(m[0]);
- if(cp+l > ep)
- l = ep - cp;
- memmove(cp, m, l);
- cp += l;
- }
- *cp = 0;
-}
-
-static void
-options(void)
-{
- long i, n;
- char *cp, *line[MAXCONF], *p, *q;
-
- multibootargs();
-
- /*
- * parse configuration args from dos file plan9.ini
- */
- cp = BOOTARGS; /* where b.com leaves its config */
- cp[BOOTARGSLEN-1] = 0;
-
- /*
- * Strip out '\r', change '\t' -> ' '.
- */
- p = cp;
- for(q = cp; *q; q++){
- if(*q == '\r')
- continue;
- if(*q == '\t')
- *q = ' ';
- *p++ = *q;
- }
- *p = 0;
-
- n = getfields(cp, line, MAXCONF, 1, "\n");
- for(i = 0; i < n; i++){
- if(*line[i] == '#')
- continue;
- cp = strchr(line[i], '=');
- if(cp == nil)
- continue;
- *cp++ = '\0';
- confname[nconf] = line[i];
- confval[nconf] = cp;
- nconf++;
- }
-}
-
-char*
-getconf(char *name)
-{
- int i;
-
- for(i = 0; i < nconf; i++)
- if(cistrcmp(confname[i], name) == 0)
- return confval[i];
- return 0;
-}
-
-static void
-writeconf(void)
-{
- char *p, *q;
- int n;
-
- p = getconfenv();
-
- if(waserror()) {
- free(p);
- nexterror();
- }
-
- /* convert to name=value\n format */
- for(q=p; *q; q++) {
- q += strlen(q);
- *q = '=';
- q += strlen(q);
- *q = '\n';
- }
- n = q - p + 1;
- if(n >= BOOTARGSLEN)
- error("kernel configuration too large");
- memset(BOOTLINE, 0, BOOTLINELEN);
- memmove(BOOTARGS, p, n);
- poperror();
- free(p);
-}
-
void
confinit(void)
{
active.exiting = 0;
}
-void
-bootargs(void *base)
-{
- char *argv[8];
- int i, argc;
-
-#define UA(ka) ((char*)(ka) + ((uintptr)(USTKTOP - BY2PG) - (uintptr)base))
- sp = (char*)base + BY2PG - sizeof(Tos);
-
- /* push boot command line onto the stack */
- sp -= BOOTLINELEN;
- sp[BOOTLINELEN-1] = '\0';
- memmove(sp, BOOTLINE, BOOTLINELEN-1);
-
- /* parse boot command line */
- argc = tokenize(sp, argv, nelem(argv));
- if(argc < 1){
- strcpy(sp, "boot");
- argc = 0;
- argv[argc++] = sp;
- }
-
- /* 8 byte word align stack */
- sp = (char*)((uintptr)sp & ~7);
-
- /* build argv on stack */
- sp -= (argc+1)*BY2WD;
- for(i=0; i<argc; i++)
- ((char**)sp)[i] = UA(argv[i]);
- ((char**)sp)[i] = nil;
-
- sp = UA(sp);
-#undef UA
- sp -= BY2WD;
-}
-
void
init0(void)
{
- int i;
char buf[2*KNAMELEN];
up->nerrlab = 0;
ksetenv("service", "cpu", 0);
else
ksetenv("service", "terminal", 0);
- for(i = 0; i < nconf; i++){
- if(confname[i][0] != '*')
- ksetenv(confname[i], confval[i], 0);
- ksetenv(confname[i], confval[i], 1);
- }
+ setconfenv();
poperror();
}
kproc("alarm", alarmkproc, 0);
touser(sp);
}
+void
+userbootargs(void *base)
+{
+ char *argv[8];
+ int i, argc;
+
+#define UA(ka) ((char*)(ka) + ((uintptr)(USTKTOP - BY2PG) - (uintptr)base))
+ sp = (char*)base + BY2PG - sizeof(Tos);
+
+ /* push boot command line onto the stack */
+ sp -= BOOTLINELEN;
+ sp[BOOTLINELEN-1] = '\0';
+ memmove(sp, BOOTLINE, BOOTLINELEN-1);
+
+ /* parse boot command line */
+ argc = tokenize(sp, argv, nelem(argv));
+ if(argc < 1){
+ strcpy(sp, "boot");
+ argc = 0;
+ argv[argc++] = sp;
+ }
+
+ /* 8 byte word align stack */
+ sp = (char*)((uintptr)sp & ~7);
+
+ /* build argv on stack */
+ sp -= (argc+1)*BY2WD;
+ for(i=0; i<argc; i++)
+ ((char**)sp)[i] = UA(argv[i]);
+ ((char**)sp)[i] = nil;
+
+ sp = UA(sp);
+#undef UA
+ sp -= BY2WD;
+}
+
void
userinit(void)
{
v = kmap(pg);
memset(v, 0, BY2PG);
segpage(s, pg);
- bootargs(v);
+ userbootargs(v);
kunmap(v);
/*
main()
{
mach0init();
- options();
+ bootargsinit();
ioinit();
i8250console();
quotefmtinstall();
projects / plan9front.git / blobdiff