| 1 | |
| 2 | #include "3ds_utils.h" |
| 3 | |
| 4 | typedef int (*ctr_callback_type)(void); |
| 5 | |
| 6 | int srvGetServiceHandle(unsigned int* out, const char* name); |
| 7 | int svcCloseHandle(unsigned int handle); |
| 8 | int svcBackdoor(ctr_callback_type); |
| 9 | |
| 10 | |
| 11 | static void ctr_enable_all_svc_kernel(void) |
| 12 | { |
| 13 | __asm__ volatile("cpsid aif"); |
| 14 | |
| 15 | unsigned int* svc_access_control = *(*(unsigned int***)0xFFFF9000 + 0x22) - 0x6; |
| 16 | |
| 17 | svc_access_control[0]=0xFFFFFFFE; |
| 18 | svc_access_control[1]=0xFFFFFFFF; |
| 19 | svc_access_control[2]=0xFFFFFFFF; |
| 20 | svc_access_control[3]=0x3FFFFFFF; |
| 21 | } |
| 22 | |
| 23 | static void ctr_enable_all_svc(void) |
| 24 | { |
| 25 | svcBackdoor((ctr_callback_type)ctr_enable_all_svc_kernel); |
| 26 | } |
| 27 | |
| 28 | static void ctr_clean_invalidate_kernel(void) |
| 29 | { |
| 30 | __asm__ volatile( |
| 31 | "mrs r1, cpsr\n" |
| 32 | "cpsid aif\n" // disable interrupts |
| 33 | "mov r0, #0\n" |
| 34 | "mcr p15, 0, r0, c7, c10, 0\n" // clean dcache |
| 35 | "mcr p15, 0, r0, c7, c10, 4\n" // DSB |
| 36 | "mcr p15, 0, r0, c7, c5, 0\n" // invalidate icache+BTAC |
| 37 | "msr cpsr_cx, r1\n" // restore interrupts |
| 38 | ::: "r0", "r1"); |
| 39 | } |
| 40 | |
| 41 | void ctr_flush_invalidate_cache(void) |
| 42 | { |
| 43 | // __asm__ volatile("svc 0x2E\n\t"); |
| 44 | // __asm__ volatile("svc 0x4B\n\t"); |
| 45 | svcBackdoor((ctr_callback_type)ctr_clean_invalidate_kernel); |
| 46 | } |
| 47 | |
| 48 | int ctr_svchack_init(void) |
| 49 | { |
| 50 | extern unsigned int __service_ptr; |
| 51 | |
| 52 | if(__service_ptr) |
| 53 | return 0; |
| 54 | |
| 55 | /* CFW */ |
| 56 | ctr_enable_all_svc(); |
| 57 | return 1; |
| 58 | } |
| 59 | |