| 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 | \r |
| 18 | .text\r |
| 19 | .align 3\r |
| 20 | \r |
| 21 | .globl ASM_PFX(CEntryPoint)\r |
| 22 | .globl ASM_PFX(_ModuleEntryPoint)\r |
| 23 | \r |
| 24 | ASM_PFX(_ModuleEntryPoint):\r |
| 25 | \r |
| 26 | //\r |
| 27 | // Set stack based on PCD values. Need to do it this way to make C code work \r |
| 28 | // when it runs from FLASH. \r |
| 29 | // \r |
| 30 | LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2) /* stack base arg2 */\r |
| 31 | LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */\r |
| 32 | add r4, r2, r3\r |
| 33 | \r |
| 34 | //Enter SVC mode and set up SVC stack pointer\r |
| 35 | mov r0,#0x13|0x80|0x40\r |
| 36 | msr CPSR_c,r0\r |
| 37 | sub r4, r4, #0x400\r |
| 38 | mov r13,r4\r |
| 39 | \r |
| 40 | // Call C entry point\r |
| 41 | LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) /* memory size arg1 */\r |
| 42 | LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) /* memory size arg0 */\r |
| 43 | \r |
| 44 | blx ASM_PFX(CEntryPoint) /* Assume C code is ARM */\r |
| 45 | \r |
| 46 | ShouldNeverGetHere:\r |
| 47 | /* _CEntryPoint should never return */\r |
| 48 | b ShouldNeverGetHere\r |
| 49 | \r |
| 50 | \r |