void *loadACPITable (const char * filename)
{
void *tableAddr;
const char * dirspec=NULL;
int fd = search_and_get_acpi_fd(filename, &dirspec);
if (fd>=0)
{
tableAddr=(void*)AllocateKernelMemory(file_size (fd));
if (tableAddr)
{
if (read (fd, tableAddr, file_size (fd))!=file_size (fd))
{
printf("Couldn't read table %s\n",dirspec);
free (tableAddr);
close (fd);
return NULL;
}
DBG("Table %s read and stored at: %x\n", dirspec, tableAddr);
close (fd);
return tableAddr;
}
close (fd);
printf("Couldn't allocate memory for table \n", dirspec);
}
//printf("Couldn't find table %s\n", filename);
return NULL;
}
int getPciRootUID(void)
{
// void *new_dsdt;
const char *val;
int len; //,fsize;
// const char * dsdt_filename=NULL;
// extern int search_and_get_acpi_fd(const char *, const char **);
if (rootuid < 10) return rootuid;
rootuid = 0; /* default uid = 0 */
if (getValueForKey(kPCIRootUID, &val, &len, &bootInfo->chameleonConfig)) {
if (isdigit(val[0])) rootuid = val[0] - '0';
goto out;
}
/* Chameleon compatibility */
else if (getValueForKey("PciRoot", &val, &len, &bootInfo->chameleonConfig)) {
if (isdigit(val[0])) rootuid = val[0] - '0';
goto out;
}
/* PCEFI compatibility */
else if (getValueForKey("-pci0", &val, &len, &bootInfo->chameleonConfig)) {
rootuid = 0;
goto out;
}
else if (getValueForKey("-pci1", &val, &len, &bootInfo->chameleonConfig)) {
rootuid = 1;
goto out;
}
//Slice - as in Meklort
#if NOTNOW
int fd = search_and_get_acpi_fd("DSDT.aml", &dsdt_filename);
// Check booting partition
if (fd<0)
{
verbose("No DSDT found, using 0 as uid value.\n");
rootuid = 0;
goto out;
}
fsize = file_size(fd);
if ((new_dsdt = malloc(fsize)) == NULL) {
verbose("[ERROR] alloc DSDT memory failed\n");
close (fd);
goto out;
}
if (read (fd, new_dsdt, fsize) != fsize) {
verbose("[ERROR] read %s failed\n", dsdt_filename);
close (fd);
goto out;
}
close (fd);
rootuid = findpciroot(new_dsdt, fsize);
free(new_dsdt);
// make sure it really works:
if (rootuid == 11) rootuid=0; //usually when _UID isnt present, it means uid is zero
else if (rootuid < 0 || rootuid > 9)
{
verbose("PciRoot uid value wasnt found, using 0, if you want it to be 1, use -PciRootUID flag");
rootuid = 0;
}
#endif
out:
verbose("Using PCI-Root-UID value: %d\n", rootuid);
return rootuid;
}