| /** The folowing ACPI Table search algo. should be reused anywhere needed:*/␊ |
| int search_and_get_acpi_fd(const char * filename, const char ** outDirspec)␊ |
| {␊ |
| ␉int fd=0;␊ |
| ␉const char * overriden_pathname=NULL;␊ |
| ␉static char dirspec[512]="";␊ |
| ␉static bool first_time =true; ␊ |
| ␉int len=0;␊ |
| ␉int fd = 0;␊ |
| ␉char dirSpec[512] = "";␊ |
| ␉␊ |
| ␉/// Take in accound user overriding if it's DSDT only␊ |
| ␉if (strstr(filename, "DSDT") && ␊ |
| ␉␉getValueForKey(kDSDT, &overriden_pathname, &len, ␊ |
| ␉␉␉␉␉ &bootInfo->bootConfig))␊ |
| {␊ |
| ␉␉sprintf(dirspec, "%s", overriden_pathname);␊ |
| ␉␉fd=open (dirspec,0);␊ |
| ␉␉if (fd>=0) goto success_fd;␊ |
| }␊ |
| ␉// Check that dirspec is not already assigned with a path␊ |
| ␉if (!first_time && *dirspec) ␊ |
| ␉{ // it is so start searching this cached patch first␊ |
| ␉␉//extract path␊ |
| ␉␉for (len=strlen(dirspec)-1; len; len--)␊ |
| ␉␉␉if (dirspec[len]=='/' || len==0)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉dirspec[len]='\0';␊ |
| ␉␉␉␉break;␊ |
| ␉␉␉}␊ |
| ␉␉// now concat with the filename␊ |
| ␉␉strncat(dirspec, "/", sizeof(dirspec));␊ |
| ␉␉strncat(dirspec, filename, sizeof(dirspec));␊ |
| ␉␉// and test to see if we don't have our big boy here:␊ |
| ␉␉fd=open (dirspec,0);␊ |
| ␉␉if (fd>=0) ␊ |
| ␉// Try finding 'filename' in the usual places␊ |
| ␉// Start searching any potential location for ACPI Table␊ |
| ␉sprintf(dirSpec, "%s", filename); ␊ |
| ␉fd = open(dirSpec, 0);␊ |
| ␉if (fd < 0)␊ |
| ␉{␉␊ |
| ␉␉sprintf(dirSpec, "/Extra/%s", filename); ␊ |
| ␉␉fd = open(dirSpec, 0);␊ |
| ␉␉if (fd < 0)␊ |
| ␉␉{␊ |
| ␉␉␉// printf("ACPI file search cache hit: file found at %s\n", dirspec);␊ |
| ␉␉␉goto success_fd;␊ |
| ␉␉␉sprintf(dirSpec, "bt(0,0)/Extra/%s", filename);␊ |
| ␉␉␉fd = open(dirSpec, 0);␊ |
| ␉␉}␊ |
| ␉}␊ |
| ␉// Start searching any potential location for ACPI Table␊ |
| ␉// search the Extra folders first␊ |
| ␉sprintf(dirspec,"/Extra/%s",filename); ␊ |
| ␉fd=open (dirspec,0);␊ |
| ␉if (fd>=0) goto success_fd;␊ |
| ␉␊ |
| ␉sprintf(dirspec,"bt(0,0)/Extra/%s",filename);␊ |
| ␉fd=open (dirspec,0);␊ |
| ␉if (fd>=0) goto success_fd;␊ |
| ␉␊ |
| ␉sprintf(dirspec, "%s", filename); // search current dir␊ |
| ␉fd=open (dirspec,0);␊ |
| ␉if (fd>=0) goto success_fd;␊ |
| ␉␊ |
| ␉sprintf(dirspec, "/%s", filename); // search root␊ |
| ␉fd=open (dirspec,0);␊ |
| ␉if (fd>=0) goto success_fd;␊ |
| ␉␊ |
| ␉// NOT FOUND:␊ |
| ␉//verbose("ACPI Table not found: %s\n", filename);␊ |
| ␉if (outDirspec) *outDirspec = "";␊ |
| ␉first_time = false;␊ |
| ␉return -1;␊ |
| ␉// FOUND␊ |
| success_fd:␊ |
| ␉first_time = false;␊ |
| ␉if (outDirspec) *outDirspec = dirspec; ␊ |
| ␊ |
| ␉if (fd < 0)␊ |
| ␉{␊ |
| ␉␉// NOT FOUND:␊ |
| ␉␉verbose("ACPI table not found: %s\n", filename);␊ |
| ␉␉*dirSpec = '\0';␊ |
| ␉}␊ |
| ␊ |
| ␉if (outDirspec) *outDirspec = dirSpec; ␊ |
| ␉return fd;␊ |
| }␊ |
| ␊ |
| ␊ |
| void *loadACPITable (const char * filename)␊ |
| {␊ |
| ␉void *tableAddr;␊ |
|
| {␊ |
| ␉int version;␊ |
| ␉void *new_dsdt;␊ |
| ␊ |
| ␉const char *filename;␊ |
| ␉char dirSpec[128];␊ |
| ␉int len = 0;␊ |
| ␊ |
| ␉// Try using the file specified with the DSDT option␊ |
| ␉if (getValueForKey(kDSDT, &filename, &len, &bootInfo->bootConfig))␊ |
| ␉{␊ |
| ␉␉sprintf(dirSpec, filename);␊ |
| ␉}␊ |
| ␉else␊ |
| ␉{␊ |
| ␉␉sprintf(dirSpec, "DSDT.aml");␊ |
| ␉}␊ |
| ␉␊ |
| ␉// Load replacement DSDT␊ |
| ␉new_dsdt=loadACPITable("DSDT.aml");␊ |
| ␉new_dsdt = loadACPITable(dirSpec);␊ |
| ␉// Mozodojo: going to patch FACP and load SSDT's even if DSDT.aml is not present␊ |
| ␉/*if (!new_dsdt)␊ |
| ␉ {␊ |
