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Parse bootscript in ppc\bootinfo.txt

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git-svn-id: svn://coreboot.org/openbios/openbios-devel@314 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
2008-12-23 11:54:25 +00:00
parent fa30d06c1d
commit 882edb55de
1 changed files with 82 additions and 0 deletions
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82
arch/ppc/qemu/main.c
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@@ -130,6 +130,82 @@ try_path(const char *path, const char *param)
/* won't come here */
}
/*
Parse SGML structure like:
<chrp-boot>
<description>Debian/GNU Linux Installation on IBM CHRP hardware</description>
<os-name>Debian/GNU Linux for PowerPC</os-name>
<boot-script>boot &device;:\install\yaboot</boot-script>
<icon size=64,64 color-space=3,3,2>
CHRP system bindings are described at:
http://playground.sun.com/1275/bindings/chrp/chrp1_7a.ps
*/
static void
try_bootinfo(const char *path)
{
int fd;
char tagbuf[256], bootscript[256], c, *left, *right;
int len, tag, taglen, script, scriptlen;
snprintf(bootscript, sizeof(bootscript), "%s,ppc\\bootinfo.txt", path);
ELF_DPRINTF("Trying %s\n", bootscript);
if ((fd = open_io(bootscript)) == -1) {
ELF_DPRINTF("Can't open %s\n", bootscript);
return;
}
len = read_io(fd, tagbuf, 11);
tagbuf[11] = '\0';
if (len < 0 || strcasecmp(tagbuf, "<chrp-boot>") != 0)
goto badf;
tag = 0;
taglen = 0;
script = 0;
scriptlen = 0;
do {
len = read_io(fd, &c, 1);
if (len < 0)
goto badf;
if (c == '<') {
tag = 1;
taglen = 0;
} else if (c == '>') {
tag = 0;
tagbuf[taglen] = '\0';
if (strcasecmp(tagbuf, "boot-script") == 0)
script = 1;
else if (strcasecmp(tagbuf, "/boot-script") == 0) {
bootscript[scriptlen] = '\0';
break;
}
} else if (tag && taglen < sizeof(tagbuf)) {
tagbuf[taglen++] = c;
} else if (script && scriptlen < sizeof(bootscript)) {
bootscript[scriptlen++] = c;
}
} while (1);
ELF_DPRINTF("got bootscript %s\n", bootscript);
// Replace &device;: with original path
push_str(bootscript);
PUSH('&');
fword("left-split");
fword("2swap");
PUSH(':');
fword("left-split");
fword("2drop");
right = pop_fstr_copy();
left = pop_fstr_copy();
snprintf(bootscript, sizeof(bootscript), "%s%s,%s", left, path, right);
ELF_DPRINTF("fixed bootscript %s\n", bootscript);
feval(bootscript);
badf:
close_io( fd );
}
static void
yaboot_startup( void )
{
@@ -139,6 +215,7 @@ yaboot_startup( void )
int i;
if (!path) {
ELF_DPRINTF("Entering boot, no path\n");
push_str("boot-device");
push_str("/options");
fword("(find-dev)");
@@ -159,8 +236,13 @@ yaboot_startup( void )
POP();
param = pop_fstr_copy();
}
try_bootinfo(path);
try_path(path, param);
}
} else {
ELF_DPRINTF("Entering boot, path %s\n", path);
try_path(path, "");
try_bootinfo(path);
}
for( i=0; i < sizeof(paths) / sizeof(paths[0]); i++ ) {
try_path(paths[i], args[i]);