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Source at commit 537 created 13 years 7 months ago. By meklort, A few more bugfixes / typo fixes | |
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1 | /*␊ |
2 | * Copyright 2009 netkas␊ |
3 | */␊ |
4 | ␊ |
5 | #include "libsaio.h"␊ |
6 | #include "boot.h"␊ |
7 | #include "bootstruct.h"␊ |
8 | ␊ |
9 | #ifndef DEBUG_PCIROOT␊ |
10 | #define DEBUG_PCIROOT 1␊ |
11 | #endif␊ |
12 | ␊ |
13 | #if DEBUG_PCIROOT␊ |
14 | #define DBG(x...) printf(x)␊ |
15 | #else␊ |
16 | #define DBG(x...)␊ |
17 | #endif␊ |
18 | ␊ |
19 | static int rootuid = 10; //value means function wasnt ran yet␊ |
20 | ␊ |
21 | static unsigned int findrootuid(unsigned char * dsdt, int len)␊ |
22 | {␊ |
23 | ␉int i;␊ |
24 | ␉for (i=0; i<64 && i<len-5; i++) //not far than 64 symbols from pci root ␊ |
25 | ␉{␊ |
26 | ␉␉if(dsdt[i] == '_' && dsdt[i+1] == 'U' && dsdt[i+2] == 'I' && dsdt[i+3] == 'D' && dsdt[i+5] == 0x08)␊ |
27 | ␉␉{␊ |
28 | ␉␉␉return dsdt[i+4];␊ |
29 | ␉␉}␊ |
30 | ␉}␊ |
31 | ␉return 11;␊ |
32 | }␊ |
33 | ␊ |
34 | unsigned int findpciroot(unsigned char * dsdt,int len)␊ |
35 | {␊ |
36 | ␉int i;␊ |
37 | ␊ |
38 | ␉for (i=0; i<len-4; i++) {␊ |
39 | ␉␉if(dsdt[i] == 'P' && dsdt[i+1] == 'C' && dsdt[i+2] == 'I' && (dsdt[i+3] == 0x08 || dsdt [i+4] == 0x08)) {␊ |
40 | ␉␉␉return findrootuid(dsdt+i, len-i);␊ |
41 | ␉␉}␊ |
42 | ␉}␊ |
43 | ␉return 10;␊ |
44 | }␊ |
45 | ␊ |
46 | int getPciRootUID(void)␊ |
47 | {␊ |
48 | ␉const char *val;␊ |
49 | ␉int len;␊ |
50 | ␉extern int search_and_get_acpi_fd(const char *, const char **);␊ |
51 | ␊ |
52 | ␉if (rootuid < 10) return rootuid;␊ |
53 | ␉rootuid = 0;␉/* default uid = 0 */␊ |
54 | ␊ |
55 | ␉if (getValueForKey(kPCIRootUID, &val, &len, &bootInfo->bootConfig)) {␊ |
56 | ␉␉if (isdigit(val[0])) rootuid = val[0] - '0';␊ |
57 | ␉}␊ |
58 | ␉/* Chameleon compatibility */␊ |
59 | ␉else if (getValueForKey("PciRoot", &val, &len, &bootInfo->bootConfig)) {␊ |
60 | ␉␉if (isdigit(val[0])) rootuid = val[0] - '0';␊ |
61 | ␉}␊ |
62 | ␉/* PCEFI compatibility */␊ |
63 | ␉else if (getValueForKey("-pci0", &val, &len, &bootInfo->bootConfig)) {␊ |
64 | ␉␉rootuid = 0;␊ |
65 | ␉}␊ |
66 | ␉else if (getValueForKey("-pci1", &val, &len, &bootInfo->bootConfig)) {␊ |
67 | ␉␉rootuid = 1;␊ |
68 | ␉}␊ |
69 | ␊ |
70 | ␉verbose("Using PCI-Root-UID value: %d\n", rootuid);␊ |
71 | ␉return rootuid;␊ |
72 | }␊ |
73 |