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| Source at commit 576 created 13 years 6 months ago. By meklort, Retrieve and store the machine's smbios product name. Load machin.DSDT.aml file if it exists. | |
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| 1 | /*␊ |
| 2 | * Copyright (c) 2009 Evan Lojewski. All rights reserved.␊ |
| 3 | *␊ |
| 4 | */␊ |
| 5 | ␊ |
| 6 | #include "libsaio.h"␊ |
| 7 | #include "modules.h"␊ |
| 8 | #include "boot.h"␊ |
| 9 | #include "bootstruct.h"␊ |
| 10 | #include "pci_root.h"␊ |
| 11 | #include "acpi_patcher.h"␊ |
| 12 | ␊ |
| 13 | int ACPIPatcher_getPciRootUID(void);␊ |
| 14 | unsigned int findpciroot(unsigned char * dsdt,int len);␊ |
| 15 | static unsigned int findrootuid(unsigned char * dsdt, int len);␊ |
| 16 | ␊ |
| 17 | void ACPIPatcher_setupEfiConfigurationTable_hook(void* binary, void* arg2, void* arg3, void* arg4)␊ |
| 18 | {␊ |
| 19 | ␉// Setup ACPI with DSDT overrides (mackerintel's patch)␊ |
| 20 | ␉setupAcpi();␊ |
| 21 | }␊ |
| 22 | ␊ |
| 23 | void ACPIPatcher_start()␊ |
| 24 | {␊ |
| 25 | ␉replace_function("_getPciRootUID", &ACPIPatcher_getPciRootUID);␊ |
| 26 | ␉register_hook_callback("setupEfiConfigurationTable", &ACPIPatcher_setupEfiConfigurationTable_hook);␊ |
| 27 | }␊ |
| 28 | ␊ |
| 29 | int ACPIPatcher_rootuid = 10; //value means function wasnt ran yet␊ |
| 30 | ␊ |
| 31 | int ACPIPatcher_getPciRootUID(void)␊ |
| 32 | {␊ |
| 33 | ␉void *new_dsdt;␊ |
| 34 | ␉const char *val;␊ |
| 35 | ␉int len,fsize;␊ |
| 36 | ␉const char * dsdt_filename=NULL;␊ |
| 37 | ␉extern int search_and_get_acpi_fd(const char *, const char **);␊ |
| 38 | ␉␊ |
| 39 | ␉if (ACPIPatcher_rootuid < 10) return ACPIPatcher_rootuid;␊ |
| 40 | ␉ACPIPatcher_rootuid = 0;␉/* default uid = 0 */␊ |
| 41 | ␉␊ |
| 42 | ␉if (getValueForKey(kPCIRootUID, &val, &len, &bootInfo->bootConfig)) {␊ |
| 43 | ␉␉if (isdigit(val[0])) ACPIPatcher_rootuid = val[0] - '0';␊ |
| 44 | ␉␉goto out;␊ |
| 45 | ␉}␊ |
| 46 | ␉/* Chameleon compatibility */␊ |
| 47 | ␉else if (getValueForKey("PciRoot", &val, &len, &bootInfo->bootConfig)) {␊ |
| 48 | ␉␉if (isdigit(val[0])) ACPIPatcher_rootuid = val[0] - '0';␊ |
| 49 | ␉␉goto out;␊ |
| 50 | ␉}␊ |
| 51 | ␉/* PCEFI compatibility */␊ |
| 52 | ␉else if (getValueForKey("-pci0", &val, &len, &bootInfo->bootConfig)) {␊ |
| 53 | ␉␉ACPIPatcher_rootuid = 0;␊ |
| 54 | ␉␉goto out;␊ |
| 55 | ␉}␊ |
| 56 | ␉else if (getValueForKey("-pci1", &val, &len, &bootInfo->bootConfig)) {␊ |
| 57 | ␉␉ACPIPatcher_rootuid = 1;␊ |
| 58 | ␉␉goto out;␊ |
| 59 | ␉}␊ |
| 60 | ␉␊ |
| 61 | ␉int fd = search_and_get_acpi_fd("DSDT.aml", &dsdt_filename);␊ |
| 62 | ␉␊ |
| 63 | ␉// Check booting partition␊ |
| 64 | ␉if (fd<0)␊ |
| 65 | ␉{␉ ␊ |
| 66 | ␉␉verbose("No DSDT found, using 0 as uid value.\n");␊ |
| 67 | ␉␉ACPIPatcher_rootuid = 0;␊ |
| 68 | ␉␉goto out;␊ |
| 69 | ␉}␊ |
| 70 | ␉␊ |
| 71 | ␉fsize = file_size(fd);␊ |
| 72 | ␊ |
| 73 | ␉if ((new_dsdt = malloc(fsize)) == NULL) {␊ |
| 74 | ␉␉verbose("[ERROR] alloc DSDT memory failed\n");␊ |
| 75 | ␉␉close (fd);␊ |
| 76 | ␉␉goto out;␊ |
| 77 | ␉}␊ |
| 78 | ␉if (read (fd, new_dsdt, fsize) != fsize) {␊ |
| 79 | ␉␉verbose("[ERROR] read %s failed\n", dsdt_filename);␊ |
| 80 | ␉␉close (fd);␊ |
| 81 | ␉␉goto out;␊ |
| 82 | ␉}␊ |
| 83 | ␉close (fd);␊ |
| 84 | ␉␊ |
| 85 | ␉ACPIPatcher_rootuid = findpciroot(new_dsdt, fsize);␊ |
| 86 | ␉free(new_dsdt);␊ |
| 87 | ␉␊ |
| 88 | ␉// make sure it really works: ␊ |
| 89 | ␉if (ACPIPatcher_rootuid == 11) ACPIPatcher_rootuid=0; //usually when _UID isnt present, it means uid is zero␊ |
| 90 | ␉else if (ACPIPatcher_rootuid < 0 || ACPIPatcher_rootuid > 9) ␊ |
| 91 | ␉{␊ |
| 92 | ␉␉printf("PciRoot uid value wasnt found, using 0, if you want it to be 1, use -PciRootUID flag");␊ |
| 93 | ␉␉ACPIPatcher_rootuid = 0;␊ |
| 94 | ␉}␊ |
| 95 | out:␊ |
| 96 | ␉verbose("Using PCI-Root-UID value: %d\n", ACPIPatcher_rootuid);␊ |
| 97 | ␉return ACPIPatcher_rootuid;␊ |
| 98 | }␊ |
| 99 | ␊ |
| 100 | unsigned int findpciroot(unsigned char * dsdt,int len)␊ |
| 101 | {␊ |
| 102 | ␉int i;␊ |
| 103 | ␉␊ |
| 104 | ␉for (i=0; i<len-4; i++) {␊ |
| 105 | ␉␉if(dsdt[i] == 'P' && dsdt[i+1] == 'C' && dsdt[i+2] == 'I' && (dsdt[i+3] == 0x08 || dsdt [i+4] == 0x08)) {␊ |
| 106 | ␉␉␉return findrootuid(dsdt+i, len-i);␊ |
| 107 | ␉␉}␊ |
| 108 | ␉}␊ |
| 109 | ␉return 10;␊ |
| 110 | }␊ |
| 111 | ␊ |
| 112 | static unsigned int findrootuid(unsigned char * dsdt, int len)␊ |
| 113 | {␊ |
| 114 | ␉int i;␊ |
| 115 | ␉for (i=0; i<64 && i<len-5; i++) //not far than 64 symbols from pci root ␊ |
| 116 | ␉{␊ |
| 117 | ␉␉if(dsdt[i] == '_' && dsdt[i+1] == 'U' && dsdt[i+2] == 'I' && dsdt[i+3] == 'D' && dsdt[i+5] == 0x08)␊ |
| 118 | ␉␉{␊ |
| 119 | ␉␉␉return dsdt[i+4];␊ |
| 120 | ␉␉}␊ |
| 121 | ␉}␊ |
| 122 | ␉return 11;␊ |
| 123 | }␊ |
| 124 | |
