ReactOS 0.4.15-dev-5667-ged97270
envir.c
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1/*
2 * PROJECT: ReactOS Boot Loader
3 * LICENSE: BSD - See COPYING.ARM in the top level directory
4 * FILE: boot/armllb/envir.c
5 * PURPOSE: LLB Environment Variable Routines
6 * PROGRAMMERS: ReactOS Portable Systems Group
7 */
8
9#include "precomp.h"
10
19
20VOID
23{
24 PATAG Atag;
25
26 /* Parse the ATAGs */
27 Atag = Arguments;
28 while (Atag->Hdr.Size)
29 {
30 /* Check tag type */
31 switch (Atag->Hdr.Tag)
32 {
33 case ATAG_CORE:
34
35 /* Save page size */
37 break;
38
39 case ATAG_REVISION:
40
41 /* Save page size */
43 break;
44
45 case ATAG_MEM:
46
47 /* Save RAM start and size */
49 LlbEnvHwMemSize += Atag->u.Mem.Size;
50 break;
51
52 case ATAG_INITRD2:
53
54 /* Save RAMDISK start and size */
57
58#ifdef _BEAGLE_
59 /* Make sure it's 16MB-aligned */
60 LlbEnvRamDiskSize = (LlbEnvRamDiskSize + (16 * 1024 * 1024) - 1)
61 &~ ((16 * 1024 * 1024) - 1);
62
63 /* The RAMDISK actually starts 16MB later */
64 LlbEnvRamDiskStart += 16 * 1024 * 1024;
65 LlbEnvRamDiskSize -= 16 * 1024 * 1024;
66#endif
67 break;
68
69 case ATAG_CMDLINE:
70
71 /* Save command line */
73 Atag->u.CmdLine.CmdLine,
74 Atag->Hdr.Size * sizeof(ULONG));
75 break;
76
77 /* Nothing left to handle */
78 case ATAG_NONE:
79 default:
80 break;
81 }
82
83 /* Next tag */
84 Atag = (PATAG)((PULONG)Atag + Atag->Hdr.Size);
85 }
86
87 /* For debugging */
88 DbgPrint("[BOOTROM] Board Revision: %lx PageSize: %dKB RAM: %dMB CMDLINE: %s\n"
89 "[RAMDISK] Base: %lx Size: %dMB\n",
91 LlbEnvHwPageSize / 1024, LlbEnvHwMemSize / 1024 / 1024, LlbEnvCmdLine,
93}
94
95VOID
99{
100 /* Return RAM information */
103}
104
106NTAPI
108 IN PULONG Size)
109{
110 /* Do we have a ramdisk? */
111 if (LlbEnvRamDiskSize == 0)
112 {
113 /* No */
114 *Base = 0;
115 *Size = 0;
116 return FALSE;
117 }
118
119 /* Return ramdisk information */
122 return TRUE;
123}
124
125PCHAR
126NTAPI
128{
129 PCHAR ValuePointer;
130 ULONG Length = 0;
131
132 /* Search for the value name */
133 ValuePointer = strstr(LlbEnvCmdLine, ValueName);
134 if (ValuePointer)
135 {
136 /* Get the value data and its length */
137 ValuePointer += strlen(ValueName) + 1;
138 if (strchr(ValuePointer, ','))
139 {
140 /* Stop before next parameter */
141 Length = strchr(ValuePointer, ',') - ValuePointer;
142 }
143 else
144 {
145 /* Stop before the string ends */
146 Length = strlen(ValuePointer);
147 }
148
149 /* Copy it */
150 strncpy(LlbValueData, ValuePointer, Length);
151 }
152
153 /* Terminate the data */
155
156 /* Return the data */
157 return LlbValueData;
158}
159
160/* EOF */
161
unsigned char BOOLEAN
char * strstr(char *String1, char *String2)
Definition: utclib.c:653
ACPI_SIZE strlen(const char *String)
Definition: utclib.c:269
char * strncpy(char *DstString, const char *SrcString, ACPI_SIZE Count)
Definition: utclib.c:427
char * strchr(const char *String, int ch)
Definition: utclib.c:501
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
ULONG LlbEnvHwMemSize
Definition: envir.c:13
VOID NTAPI LlbEnvParseArguments(IN PATAG Arguments)
Definition: envir.c:22
CHAR LlbEnvCmdLine[256]
Definition: envir.c:17
ULONG LlbEnvHwMemStart
Definition: envir.c:12
ULONG LlbEnvRamDiskSize
Definition: envir.c:15
VOID NTAPI LlbEnvGetMemoryInformation(IN PULONG Base, IN PULONG Size)
Definition: envir.c:97
ULONG LlbEnvHwRevision
Definition: envir.c:16
PCHAR NTAPI LlbEnvRead(IN PCHAR ValueName)
Definition: envir.c:127
CHAR LlbValueData[32]
Definition: envir.c:18
BOOLEAN NTAPI LlbEnvGetRamDiskInformation(IN PULONG Base, IN PULONG Size)
Definition: envir.c:107
ULONG LlbEnvRamDiskStart
Definition: envir.c:14
ULONG LlbEnvHwPageSize
Definition: envir.c:11
#define ATAG_REVISION
Definition: envir.h:64
struct _ATAG * PATAG
#define ATAG_NONE
Definition: envir.h:57
#define ATAG_MEM
Definition: envir.h:59
#define ATAG_CMDLINE
Definition: envir.h:66
#define ATAG_CORE
Definition: envir.h:58
#define ATAG_INITRD2
Definition: envir.h:62
#define DbgPrint
Definition: hal.h:12
_In_opt_ ULONG Base
Definition: rtlfuncs.h:2427
#define ANSI_NULL
_In_ ULONG _In_ ULONG _In_ ULONG Length
Definition: ntddpcm.h:102
CHAR CmdLine[ANYSIZE_ARRAY]
Definition: envir.h:41
ULONG PageSize
Definition: envir.h:18
ULONG Tag
Definition: envir.h:12
ULONG Size
Definition: envir.h:11
ULONG Start
Definition: envir.h:35
ULONG Size
Definition: envir.h:36
ULONG Start
Definition: envir.h:25
ULONG Size
Definition: envir.h:24
ULONG Rev
Definition: envir.h:30
Definition: envir.h:45
ATAG_REVISION Revision
Definition: envir.h:51
ATAG_CORE Core
Definition: envir.h:49
ATAG_MEM Mem
Definition: envir.h:50
ATAG_HEADER Hdr
Definition: envir.h:46
ATAG_CMDLINE CmdLine
Definition: envir.h:53
ATAG_INITRD2 InitRd2
Definition: envir.h:52
union _ATAG::@96 u
uint32_t * PULONG
Definition: typedefs.h:59
#define NTAPI
Definition: typedefs.h:36
#define IN
Definition: typedefs.h:39
uint32_t ULONG
Definition: typedefs.h:59
char * PCHAR
Definition: typedefs.h:51
_Must_inspect_result_ _In_ WDFDEVICE _In_ PWDF_DEVICE_PROPERTY_DATA _In_ DEVPROPTYPE _In_ ULONG Size
Definition: wdfdevice.h:4533
_Must_inspect_result_ _In_ WDFKEY _In_ PCUNICODE_STRING ValueName
Definition: wdfregistry.h:243
char CHAR
Definition: xmlstorage.h:175