NSKBL

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NSBL is a program that performs emmc setup, base kernel module loading, etc. when vita boot

Module

The non-secure kernel bootloader contains an embedded and likely stripped version of SceSysmem, SceKernelModulemgr, SceSblSmschedProxy, SceExcpmgr, SceKernelIntrMgr, SceProcessmgr (maybe), SceSdif, SceIofilemgr (Simple version?), and some other core drivers.

How to debug NSBL

NSBL reads from sd0: instead, if a read error(?) Occurs in os0: during vita startup.

but, in order to generate os0: read errors, os0: must be damaged in some way, so there must be a way to physically recover vita.

Libraries

Known NIDs

Version Name World Visibility NID
3.60 SceKblForKernel Non-secure Kernel 0xD0FC2991

SceKblForKernel

SceKblForKernel_0x08E9FAEB

Version NID
3.60 0x08E9FAEB

In 3.60 this function is at 0x510172BD

SceKblForKernel_0x13A5ABEF

Version NID
3.60 0x13A5ABEF

In 3.60 this function is at 0x510137A9

SceKblForKernel_0x161D6FCC

Version NID
3.60 0x161D6FCC

In 3.60 this function is at 0x510123DD

SceKblForKernel_0x1DB28F02

Version NID
3.60 0x1DB28F02

In 3.60 this function is at 0x510123A1

SceKblForKernel_0x261F2747

Version NID
3.60 0x261F2747

Related to initialization?

In 3.60 this function is at 0x51001321


int SceKblForKernel_0x261F2747(void);

SceKblForKernel_0x314AA770

Version NID
3.60 0x314AA770

In 3.60 this function is at 0x510124FD

sceKblIsDEXForKernel

Version NID
3.60 0x5945F065

In 3.60 this function is at 0x51017159

sceKblLoadModuleForKernel

Version NID
3.60 0x6D7A1F18

In 3.60 this function is at 0x51001551


typedef struct SceModuleLoadList {
  const char *filename;
} __attribute__((packed)) SceModuleLoadList;

int sceKblLoadModuleForKernel(const SceModuleLoadList *list, SceUID *uid, int count, int some_flag);

SceKblForKernel_0x752E7EEC

Version NID
3.60 0x752E7EEC

In 3.60 this function is at 0x51013841

SceKblForKernel_0x79241ACF

Version NID
3.60 0x79241ACF

Related to initialization?

In 3.60 this function is at 0x51001345


int SceKblForKernel_0x79241ACF(void);

SceKblForKernel_0x807B4437

Version NID
3.60 0x807B4437

In 3.60 this function is at 0x510124E5

sceKblIsVITAForKernel

Version NID
3.60 0x838466E9

In 3.60 this function is at 0x51017299


int sceKblIsVITAForKernel(void);

sceKblIsCEXForKernel

Version NID
3.60 0x8A416887

In 3.60 this function is at 0x510171B5


int sceKblIsCEXForKernel(void);

SceKblForKernel_0x943E7537

Version NID
3.60 0x943E7537

In 3.60 this function is at 0x5101711D

sceKblStartModuleForKernel

Version NID
3.60 0x9A92436E

In 3.60 this function is at 0x51001571


int sceKblStartModuleForKernel(SceUID *uid_list, int count, SceSize args, void *argp);

SceKblForKernel_0x9B868276

Version NID
3.60 0x9B868276

return value is ptr?

In 3.60 this function is at 0x51013765


int SceKblForKernel_9B868276(void);

SceKblForKernel_0x9F4F3F98 (set some state?)

Version NID
3.60 0x9F4F3F98

set some state?

In 3.60 this function is at 0x51001561


int SceKblForKernel_9F4F3F98(void);

sceKblIsDolceForKernel

Version NID
3.60 0xA7BD4417

In 3.60 this function is at 0x510172A1


int sceKblIsDolceForKernel(void);

sceKblGetCpuIdForKernel

Version NID
3.60 0xB506A10E

In 3.60 this function is at 0x510147C9


int sceKblGetCpuIdForKernel(void);

sceKblIsToolForKernel

Version NID
3.60 0xB6C9ACF1

In 3.60 this function is at 0x51017139


int sceKblIsToolForKernel(void);

sceKblIsGenuineDolceForKernel

Version NID
3.60 0xB6D00D6D

In 3.60 this function is at 0x510171E5


int sceKblIsGenuineDolceForKernel(void);

SceKblForKernel_0xC011935A

Version NID
3.60 0xC011935A

get some info?

In 3.60 this function is at 0x51013921


int SceKblForKernel_C011935A(void);

sceKblIsCEXJpFatForKernel

Version NID
3.60 0xC3DDDE15

In 3.60 this function is at 0x51017175


int sceKblIsCEXJpFatForKernel(void);

SceKblForKernel_0xC7B77991

Version NID
3.60 0xC7B77991

In 3.60 this function is at 0x5101297D

sceKblCheckDipswForKernel

Version NID
3.60 0xC8F4DE71

In 3.60 this function is at 0x51015851


int sceKblCheckDipswForKernel(int bit);

SceKblForKernel_0xCE94F329

Version NID
3.60 0xCE94F329

some qaf function

ret = *(uint8_t *)(sysroot + 0x2D) & 1;

In 3.60 this function is at 0x51016FD1


int SceKblForKernel_0xCE94F329(void);

SceKblForKernel_0xD3A516D5

Version NID
3.60 0xD3A516D5

get some device info function

In 3.60 this function is at 0x510128AD


typedef struct SceKblSomeSysrootInfo {
	uint32_t data[4];
} __attribute__((packed)) SceKblSomeSysrootInfo;

int SceKblForKernel_D3A516D5(SceKblSomeSysrootInfo *some_flag);

sceKblCpuSwitchInterruptsForKernel

Version NID
3.60 0xDDB3A1A8

In 3.60 this function is at 0x51003554


void sceKblCpuSwitchInterruptsForKernel(void);

SceKblForKernel_0xF7AF8690

Version NID
3.60 0xF7AF8690

In 3.60 this function is at 0x5100124D