2 * PROJECT: ReactOS Boot Loader
3 * LICENSE: BSD - See COPYING.ARM in the top level directory
4 * FILE: boot/freeldr/arch/arm/marcharm.c
5 * PURPOSE: Provides abstraction between the ARM Boot Loader and FreeLDR
6 * PROGRAMMERS: ReactOS Portable Systems Group
9 /* INCLUDES *******************************************************************/
12 #include <internal/arm/intrin_i.h>
14 /* GLOBALS ********************************************************************/
16 PARM_BOARD_CONFIGURATION_BLOCK ArmBoardBlock
;
17 ULONG gDiskReadBuffer
, gFileSysBuffer
;
18 BOOLEAN ArmHwDetectRan
;
19 PCONFIGURATION_COMPONENT_DATA RootNode
;
21 BOOLEAN AcpiPresent
= FALSE
;
23 ULONG FirstLevelDcacheSize
;
24 ULONG FirstLevelDcacheFillSize
;
25 ULONG FirstLevelIcacheSize
;
26 ULONG FirstLevelIcacheFillSize
;
27 ULONG SecondLevelDcacheSize
;
28 ULONG SecondLevelDcacheFillSize
;
29 ULONG SecondLevelIcacheSize
;
30 ULONG SecondLevelIcacheFillSize
;
32 ARC_DISK_SIGNATURE reactos_arc_disk_info
;
33 ULONG reactos_disk_count
;
51 4 // 4-way associative
58 8 // 8 words per line (32 bytes)
61 /* FUNCTIONS ******************************************************************/
64 FrLdrCheckCpuCompatiblity(VOID
)
70 ArmInit(IN PARM_BOARD_CONFIGURATION_BLOCK BootContext
)
72 /* Remember the pointer */
73 ArmBoardBlock
= BootContext
;
75 /* Let's make sure we understand the LLB */
76 ASSERT(ArmBoardBlock
->MajorVersion
== ARM_BOARD_CONFIGURATION_MAJOR_VERSION
);
77 ASSERT(ArmBoardBlock
->MinorVersion
== ARM_BOARD_CONFIGURATION_MINOR_VERSION
);
79 /* This should probably go away once we support more boards */
80 ASSERT((ArmBoardBlock
->BoardType
== MACH_TYPE_FEROCEON
) ||
81 (ArmBoardBlock
->BoardType
== MACH_TYPE_VERSATILE_PB
) ||
82 (ArmBoardBlock
->BoardType
== MACH_TYPE_OMAP3_BEAGLE
) ||
83 (ArmBoardBlock
->BoardType
== MACH_TYPE_OMAP_ZOOM2
));
85 /* Call FreeLDR's portable entrypoint with our command-line */
86 BootMain(ArmBoardBlock
->CommandLine
);
90 ArmPrepareForReactOS(IN BOOLEAN Setup
)
96 ArmDiskGetBootPath(OUT PCHAR BootPath
,
99 PCCH Path
= "ramdisk(0)";
101 /* Make sure enough space exists */
102 if (Size
< sizeof(Path
)) return FALSE
;
104 /* On ARM platforms, the loader is always in RAM */
105 strcpy(BootPath
, Path
);
110 ArmInitializeBootDevices(VOID
)
112 /* Emulate old behavior */
113 return (ArmHwDetect() != NULL
);
116 PCONFIGURATION_COMPONENT_DATA
119 ARM_CACHE_REGISTER CacheReg
;
121 /* Create the root node */
122 if (ArmHwDetectRan
++) return RootNode
;
123 FldrCreateSystemKey(&RootNode
);
127 * There's no such thing as "PnP" on embedded hardware.
128 * The boot loader will send us a device tree, similar to ACPI
129 * or OpenFirmware device trees, and we will convert it to ARC.
132 /* Get cache information */
133 CacheReg
= KeArmCacheRegisterGet();
134 FirstLevelDcacheSize
= SizeBits
[CacheReg
.DSize
];
135 FirstLevelDcacheFillSize
= LenBits
[CacheReg
.DLength
];
136 FirstLevelDcacheFillSize
<<= 2;
137 FirstLevelIcacheSize
= SizeBits
[CacheReg
.ISize
];
138 FirstLevelIcacheFillSize
= LenBits
[CacheReg
.ILength
];
139 FirstLevelIcacheFillSize
<<= 2;
140 SecondLevelDcacheSize
=
141 SecondLevelDcacheFillSize
=
142 SecondLevelIcacheSize
=
143 SecondLevelIcacheFillSize
= 0;
145 /* Register RAMDISK Device */
148 /* Fill out the ARC disk block */
149 reactos_arc_disk_info
.Signature
= 0xBADAB00F;
150 reactos_arc_disk_info
.CheckSum
= 0xDEADBABE;
151 reactos_arc_disk_info
.ArcName
= "ramdisk(0)";
152 reactos_disk_count
= 1;
154 /* Return the root node */
158 FREELDR_MEMORY_DESCRIPTOR ArmMemoryMap
[32];
160 PFREELDR_MEMORY_DESCRIPTOR
161 ArmMemGetMemoryMap(OUT ULONG
*MemoryMapSize
)
163 ASSERT(ArmBoardBlock
->MemoryMapEntryCount
<= 32);
165 /* Return whatever the board returned to us (CS0 Base + Size and FLASH0) */
166 for (i
= 0; i
< ArmBoardBlock
->MemoryMapEntryCount
; i
++)
168 ArmMemoryMap
[i
].BasePage
= ArmBoardBlock
->MemoryMap
[i
].BaseAddress
/ PAGE_SIZE
;
169 ArmMemoryMap
[i
].PageCount
= ArmBoardBlock
->MemoryMap
[i
].Length
/ PAGE_SIZE
;
170 if (ArmBoardBlock
->MemoryMap
[i
].Type
== BiosMemoryUsable
)
171 ArmMemoryMap
[i
].MemoryType
= MemoryFree
;
173 ArmMemoryMap
[i
].MemoryType
= MemoryFirmwarePermanent
;
176 return ArmBoardBlock
->MemoryMapEntryCount
;
186 MachInit(IN PCCH CommandLine
)
188 /* Copy Machine Routines from Firmware Table */
189 MachVtbl
.ConsPutChar
= ArmBoardBlock
->ConsPutChar
;
190 MachVtbl
.ConsKbHit
= ArmBoardBlock
->ConsKbHit
;
191 MachVtbl
.ConsGetCh
= ArmBoardBlock
->ConsGetCh
;
192 MachVtbl
.VideoClearScreen
= ArmBoardBlock
->VideoClearScreen
;
193 MachVtbl
.VideoSetDisplayMode
= ArmBoardBlock
->VideoSetDisplayMode
;
194 MachVtbl
.VideoGetDisplaySize
= ArmBoardBlock
->VideoGetDisplaySize
;
195 MachVtbl
.VideoPutChar
= ArmBoardBlock
->VideoPutChar
;
196 MachVtbl
.GetTime
= ArmBoardBlock
->GetTime
;
198 /* Setup board-specific ARM routines */
199 switch (ArmBoardBlock
->BoardType
)
201 /* Check for Feroceon-base boards */
202 case MACH_TYPE_FEROCEON
:
203 TuiPrintf("Not implemented\n");
207 /* Check for TI OMAP3 ZOOM-II MDK */
208 case MACH_TYPE_OMAP_ZOOM2
:
210 /* Setup the disk and file system buffers */
211 gDiskReadBuffer
= 0x81094000;
212 gFileSysBuffer
= 0x81094000;
215 /* Check for ARM Versatile PB boards */
216 case MACH_TYPE_VERSATILE_PB
:
218 /* Setup the disk and file system buffers */
219 gDiskReadBuffer
= 0x00090000;
220 gFileSysBuffer
= 0x00090000;
223 /* Check for TI OMAP3 Beagleboard */
224 case MACH_TYPE_OMAP3_BEAGLE
:
225 TuiPrintf("Not implemented\n");
233 /* Setup generic ARM routines for all boards */
234 MachVtbl
.PrepareForReactOS
= ArmPrepareForReactOS
;
235 MachVtbl
.GetMemoryMap
= ArmMemGetMemoryMap
;
236 MachVtbl
.InitializeBootDevices
= ArmInitializeBootDevices
;
237 MachVtbl
.HwDetect
= ArmHwDetect
;
238 MachVtbl
.DiskGetBootPath
= ArmDiskGetBootPath
;
239 MachVtbl
.HwIdle
= ArmHwIdle
;