mirror of
https://github.com/rvtr/ctr_firmware.git
synced 2025-10-31 07:51:08 -04:00
1e31ea5b8b
git-svn-id: file:///Volumes/Transfer/gigaleak_20231201/2020-09-30%20-%20paladin.7z/paladin/ctr_firmware@231 b871894f-2f95-9b40-918c-086798483c85
109 lines
3.2 KiB
C
109 lines
3.2 KiB
C
/*---------------------------------------------------------------------------*
|
|
Project: CtrBrom - library - init
|
|
File: crt0_secure.c
|
|
|
|
Copyright 2008 Nintendo. All rights reserved.
|
|
|
|
These coded instructions, statements, and computer programs contain
|
|
proprietary information of Nintendo of America Inc. and/or Nintendo
|
|
Company Ltd., and are protected by Federal copyright law. They may
|
|
not be disclosed to third parties or copied or duplicated in any form,
|
|
in whole or in part, without the prior written consent of Nintendo.
|
|
|
|
$Date:: $
|
|
$Rev$
|
|
$Author$
|
|
*---------------------------------------------------------------------------*/
|
|
#include <brom/code32.h>
|
|
#include <brom/os.h>
|
|
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
Name: i_stupStartHandler
|
|
|
|
Description: start handler
|
|
|
|
Arguments: None
|
|
|
|
Returns: None.
|
|
*---------------------------------------------------------------------------*/
|
|
asm void i_stupStartHandler( void )
|
|
{
|
|
PRESERVE8
|
|
|
|
INASM_EXTERN( stupInitExceptions )
|
|
INASM_EXTERN( BromMain )
|
|
INASM_EXTERN( main )
|
|
|
|
// jump from image address to physical address
|
|
ldr pc, =image_to_physical
|
|
image_to_physical
|
|
|
|
//---- initialize stack pointer
|
|
// SVC mode
|
|
mov r0, #HW_PSR_SVC_MODE | HW_PSR_IRQ_DISABLE | HW_PSR_FIQ_DISABLE
|
|
msr cpsr_fsxc, r0
|
|
ldr sp, =HW_BROM_SVC_STACK_END
|
|
|
|
// IRQ mode
|
|
mov r0, #HW_PSR_IRQ_MODE | HW_PSR_IRQ_DISABLE | HW_PSR_FIQ_DISABLE
|
|
msr cpsr_fsxc, r0
|
|
ldr r0, =HW_BROM_IRQ_STACK_END
|
|
mov sp, r0
|
|
|
|
// System mode
|
|
mov r0, #HW_PSR_SYS_MODE | HW_PSR_IRQ_DISABLE | HW_PSR_FIQ_DISABLE
|
|
msr cpsr_fsxc, r0
|
|
ldr r0, =HW_BROM_SYS_STACK_END
|
|
mov sp, r0
|
|
|
|
#ifdef SDK_NE1EMU
|
|
//---- initialize DDR2
|
|
bl i_stupInitDDR2
|
|
#endif // SDK_NE1EMU
|
|
|
|
//---- initialize exceptions
|
|
bl stupInitExceptions
|
|
|
|
//---- disable cp15
|
|
bl stupDisableCP15
|
|
|
|
//---- initialize MMU
|
|
ldr r0, =HW_BROM_MMU_T1
|
|
ldr r1, =HW_BROM_MMU_T2
|
|
bl stupInitMMU
|
|
|
|
//---- enable cp15
|
|
bl stupEnableCP15
|
|
|
|
//---- clear wram
|
|
// 4KB
|
|
mov r0, #0
|
|
ldr r1, =HW_AXI_WRAM_SHARED_SYS
|
|
ldr r2, =HW_EXCP_VENEER_BUF
|
|
sub r2, r2, r1
|
|
bl i_stupCpuClear32
|
|
|
|
ldr r1, =HW_EXCP_VENEER_BUF_END
|
|
rsb r2, r1, #HW_AXI_WRAM_END
|
|
bl i_stupCpuClear32
|
|
|
|
//---- lnitialize sections
|
|
bl stupInitSections
|
|
|
|
//---- start (to 16bit code)
|
|
ldr r1, =BromMain
|
|
adr lr, terminate
|
|
|
|
bx r1
|
|
|
|
terminate
|
|
b terminate
|
|
}
|
|
|
|
#ifdef SDK_NE1EMU
|
|
#include <./crt0_ne1.c>
|
|
#endif // SDK_NE1EMU
|
|
#include <./crt0_mmu.c>
|
|
#include <./crt0_misc.c>
|