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1 | //------------------------------------------------------------------------------ \r |
2 | //\r |
3 | // Copyright (c) 2008-2009 Apple Inc. All rights reserved.\r |
4 | //\r |
5 | // All rights reserved. This program and the accompanying materials\r |
6 | // are licensed and made available under the terms and conditions of the BSD License\r |
7 | // which accompanies this distribution. The full text of the license may be found at\r |
8 | // http://opensource.org/licenses/bsd-license.php\r |
9 | //\r |
10 | // THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
11 | // WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
12 | //\r |
13 | //------------------------------------------------------------------------------\r |
14 | \r |
15 | #include <AsmMacroIoLib.h>\r |
16 | #include <Library/PcdLib.h>\r |
17 | #include <AutoGen.h>\r |
18 | INCLUDE AsmMacroIoLib.inc\r |
19 | \r |
20 | IMPORT CEntryPoint\r |
21 | EXPORT _ModuleEntryPoint\r |
22 | \r |
23 | PRESERVE8\r |
24 | AREA ModuleEntryPoint, CODE, READONLY\r |
25 | \r |
26 | \r |
27 | _ModuleEntryPoint\r |
28 | \r |
29 | \r |
30 | //\r |
31 | // Set stack based on PCD values. Need to do it this way to make C code work \r |
32 | // when it runs from FLASH. \r |
33 | // \r |
34 | LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2) /* stack base arg2 */\r |
35 | LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */\r |
36 | add r4, r2, r3\r |
37 | \r |
38 | //Enter SVC mode and set up SVC stack pointer\r |
39 | mov r0,#0x13|0x80|0x40\r |
40 | msr CPSR_c,r0\r |
41 | mov r13,r4\r |
42 | \r |
43 | // Call C entry point\r |
44 | LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) /* memory size arg1 */\r |
45 | LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) /* memory size arg0 */\r |
46 | blx CEntryPoint /* Assume C code is thumb */\r |
47 | \r |
48 | ShouldNeverGetHere\r |
49 | /* _CEntryPoint should never return */\r |
50 | b ShouldNeverGetHere\r |
51 | \r |
52 | END\r |
53 | \r |