| }␊ |
| return NULL;␊ |
| }␊ |
| ␊ |
| void *loadACPITable ()␊ |
| /** The folowing ACPI Table search algo. should be reused anywhere needed:*/␊ |
| int search_and_get_acpi_fd(const char * filename, const char ** outDirspec)␊ |
| {␊ |
| ␉void *tableAddr;␊ |
| ␉int fd = -1;␊ |
| ␉char dirspec[512];␊ |
| ␉const char * const filename = "DSDT.aml";␊ |
| ␉const char * overriden_pathname=NULL;␊ |
| ␉int len=0;␊ |
| int fd=0;␊ |
| const char * overriden_pathname=NULL;␊ |
| static char dirspec[512]="";␊ |
| int len=0;␊ |
| ␊ |
| ␉// Check booting partition␊ |
| ␊ |
| ␉// Rek: if user specified a full path name then take it in consideration␊ |
| ␉if (getValueForKey(kDSDT, &overriden_pathname, &len, ␊ |
| /// 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); // start searching root␊ |
| ␉ //printf("Using custom DSDT path %s\n", dirspec);␊ |
| ␉ //getc();␊ |
| ␉}␊ |
| ␉else␊ |
| ␉ sprintf(dirspec, "/%s", filename); // start searching root␊ |
| {␊ |
| sprintf(dirspec, "%s", overriden_pathname); // start searching root␊ |
| fd=open (dirspec,0);␊ |
| if (fd>=0) goto success_fd;␊ |
| }␊ |
| ␊ |
| ␉fd=open (dirspec,0);␊ |
| // Start searching any potential location for ACPI Table␊ |
| sprintf(dirspec, "/%s", filename); // start searching root␊ |
| fd=open (dirspec,0);␊ |
| if (fd>=0) goto success_fd;␊ |
| ␊ |
| ␉if (fd<0)␊ |
| ␉{␉// Check Extra on booting partition␊ |
| ␉ //verbose("Searching for DSDT.aml file ...\n");␊ |
| ␉␉sprintf(dirspec,"/Extra/%s",filename);␊ |
| ␉␉fd=open (dirspec,0);␊ |
| ␉␉if (fd<0)␊ |
| ␉␉{␉// Fall back to booter partition␊ |
| ␉␉␉sprintf(dirspec,"bt(0,0)/Extra/%s",filename);␊ |
| ␉␉␉fd=open (dirspec,0);␊ |
| ␉␉␉if (fd<0)␊ |
| ␉␉␉{␊ |
| ␉␉␉␉verbose("ACPI Table not found: %s\n", filename);␊ |
| ␉␉␉␉return NULL;␊ |
| ␉␉␉}␊ |
| ␉␉}␊ |
| ␉}␊ |
| sprintf(dirspec, "%s", filename); // start current dir␊ |
| fd=open (dirspec,0);␊ |
| if (fd>=0) goto success_fd;␊ |
| ␊ |
| ␉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;␊ |
| ␉␉}␊ |
| sprintf(dirspec,"/Extra/%s",filename);␊ |
| fd=open (dirspec,0);␊ |
| if (fd>=0) goto success_fd;␊ |
| ␊ |
| ␉␉DBG("Table %s read and stored at: %x\n", dirspec, tableAddr);␊ |
| ␉␉close (fd);␊ |
| ␉␉return tableAddr;␊ |
| ␉}␊ |
| sprintf(dirspec,"bt(0,0)/Extra/%s",filename);␊ |
| fd=open (dirspec,0);␊ |
| if (fd>=0) goto success_fd;␊ |
| ␊ |
| // NOT FOUND:␊ |
| verbose("ACPI Table not found: %s\n", filename);␊ |
| if (outDirspec) *outDirspec = "";␊ |
| return -1;␊ |
| // FOUND␊ |
| success_fd:␊ |
| if (outDirspec) *outDirspec = dirspec; ␊ |
| return fd;␊ |
| }␊ |
| ␊ |
| 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 %s\n", dirspec);␊ |
| ␉close (fd);␊ |
| ␉return NULL;␊ |
| }␊ |
| ␊ |
|
| ␉bool drop_ssdt;␊ |
| ␉␊ |
| ␉// Load replacement DSDT␊ |
| ␉new_dsdt=loadACPITable();␊ |
| ␉new_dsdt=loadACPITable("DSDT.aml");␊ |
| ␉if (!new_dsdt)␊ |
| ␉{␊ |
| ␉␉return setupAcpiNoMod();␊ |
