diff options
Diffstat (limited to 'firmware/servicereq.c')
| -rw-r--r-- | firmware/servicereq.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/firmware/servicereq.c b/firmware/servicereq.c index 8f8f8a3..a05d37a 100644 --- a/firmware/servicereq.c +++ b/firmware/servicereq.c @@ -5616,12 +5616,22 @@ end: return; } +void read_rom_hack(void) +{ + // Read a byte of the ROM at an address that autoincrements every read + // and save it to the scratch register above the post code. + // Will wrap around at 0x10000 bytes. + static u16 wrappedromaddress = 0; + u32 oldpostcode = read32(0xe0003024) & 0xff; + write32(0xe0003024, ((u32)read8(wrappedromaddress++) << 8) | oldpostcode); +} + void smu_service_request(unsigned int e3) { static ddiphy_t ddiphy = {{0}}; static u32 bapm = 0; - int requestid; + u32 requestid; requestid = e3; requestid &= 0x1fffe; @@ -5715,6 +5725,9 @@ void smu_service_request(unsigned int e3) case SMC_MSG_DISABLE_BAPM: set_bapm(OFF, &bapm, &bapm); break; + case SMC_MSG_READ_ROM_HACK: + read_rom_hack(); + break; default: break; } |