mcr p15, 0, r0, c1, c0, 0\r
\r
// Set CPU vectors to start of DRAM\r
- mov r0, #0x80000000\r
+ LoadConstantToReg (FixedPcdGet32(PcdCpuVectorBaseAddress) ,r0) // Get vector base\r
mcr p15, 0, r0, c12, c0, 0\r
- /* before we call C code, lets setup the stack pointer in internal RAM*/\r
+ isb // Sync changes to control registers\r
+\r
+ // Fill vector table with branchs to current pc (jmp $)\r
+ ldr r1, ShouldNeverGetHere\r
+ movs r2, #0\r
+FillVectors\r
+ str r1, [r0, r2]\r
+ adds r2, r2, #4\r
+ cmp r2, #32\r
+ bne FillVectors\r
+ \r
+ /* before we call C code, lets setup the stack pointer in internal RAM */\r
stack_pointer_setup\r
\r
//\r
// Set stack based on PCD values. Need to do it this way to make C code work \r
// when it runs from FLASH. \r
// \r
- LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2) /* stack base arg2 */\r
- LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) /* stack size arg3 */\r
+ LoadConstantToReg (FixedPcdGet32(PcdPrePiStackBase) ,r2) // stack base arg2 \r
+ LoadConstantToReg (FixedPcdGet32(PcdPrePiStackSize) ,r3) // stack size arg3 \r
add r4, r2, r3\r
\r
//Enter SVC mode and set up SVC stack pointer\r
- mov r0,#0x13|0x80|0x40\r
- msr CPSR_c,r0\r
+ mov r5,#0x13|0x80|0x40\r
+ msr CPSR_c,r5\r
mov r13,r4\r
\r
// Call C entry point\r
- mov r0, #0x80000000 /* memory base arg0 */\r
- mov r1, #0x08000000 /* memory size arg1 */\r
- blx CEntryPoint /* Assume C code is thumb */\r
+ LoadConstantToReg (FixedPcdGet32(PcdMemorySize) ,r1) // memory size arg1 \r
+ LoadConstantToReg (FixedPcdGet32(PcdMemoryBase) ,r0) // memory start arg0\r
+ blx CEntryPoint // Assume C code is thumb \r
\r
ShouldNeverGetHere\r
/* _CEntryPoint should never return */\r