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Sync with ARMASM version. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10172 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish 2010-03-04 01:54:09 +00:00
parent 1fc17d768f
commit 97e9818a67
1 changed files with 3 additions and 31 deletions
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32
BeagleBoardPkg/Sec/Arm/ModuleEntryPoint.S
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@ -39,8 +39,7 @@ ASM_PFX(_ModuleEntryPoint):
// Set CPU vectors to start of DRAM // Set CPU vectors to start of DRAM
mov r0, #0x80000000 mov r0, #0x80000000
mcr p15, 0, r0, c12, c0, 0 mcr p15, 0, r0, c12, c0, 0
/* before we call C code, lets setup the stack pointer in internal RAM*/
/* before we call C code, lets setup the stack pointer */
stack_pointer_setup: stack_pointer_setup:
// //
@ -51,44 +50,17 @@ stack_pointer_setup:
LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */ LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */
add r4, r2, r3 add r4, r2, r3
//Enter IRQ mode and set up IRQ stack pointer
mov r0,#0x12|0x80|0x40
msr CPSR_c,r0
mov r13,r4
//Enter Abort mode and set up Abort stack pointer
mov r0,#0x17|0x80|0x40
msr CPSR_c,r0
sub r4, r4, #0x400
mov r13,r4
//Enter Undefined mode and set up Undefined stack pointer
mov r0,#0x1b|0x80|0x40
msr CPSR_c,r0
sub r4, r4, #0x400
mov r13,r4
//Enter SVC mode and set up SVC stack pointer //Enter SVC mode and set up SVC stack pointer
mov r0,#0x13|0x80|0x40 mov r0,#0x13|0x80|0x40
msr CPSR_c,r0 msr CPSR_c,r0
sub r4, r4, #0x400
mov r13,r4
//Enter System mode and set up System stack pointer
mov r0,#0x1f|0x80|0x40
msr CPSR_c,r0
sub r4, r4, #0x400
mov r13,r4 mov r13,r4
// Call C entry point // Call C entry point
LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) /* memory size arg1 */ LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) /* memory size arg1 */
LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) /* memory size arg0 */ LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) /* memory size arg0 */
blx ASM_PFX(CEntryPoint) /* Assume C code is thumb */
blx ASM_PFX(CEntryPoint) /* Assume C code is ARM */
ShouldNeverGetHere: ShouldNeverGetHere:
/* _CEntryPoint should never return */ /* _CEntryPoint should never return */
b ShouldNeverGetHere b ShouldNeverGetHere