diff options
Diffstat (limited to 'src/dev/x86/i8042.cc')
| -rw-r--r-- | src/dev/x86/i8042.cc | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/dev/x86/i8042.cc b/src/dev/x86/i8042.cc index 279c520c1..c884f71fe 100644 --- a/src/dev/x86/i8042.cc +++ b/src/dev/x86/i8042.cc @@ -35,6 +35,11 @@ #include "mem/packet.hh" #include "mem/packet_access.hh" +/** + * Note: For details on the implementation see + * https://wiki.osdev.org/%228042%22_PS/2_Controller + */ + // The 8042 has a whopping 32 bytes of internal RAM. const uint8_t RamSize = 32; const uint8_t NumOutputBits = 14; @@ -382,6 +387,17 @@ X86ISA::I8042::write(PacketPtr pkt) "mouse output buffer\" command.\n", data); writeData(data, true); break; + case WriteKeyboardOutputBuff: + DPRINTF(I8042, "Got data %#02x for \"Write " + "keyboad output buffer\" command.\n", data); + writeData(data, false); + break; + case WriteOutputPort: + DPRINTF(I8042, "Got data %#02x for \"Write " + "output port\" command.\n", data); + panic_if(bits(data, 0) != 1, "Reset bit should be 1"); + // Safe to ignore otherwise + break; default: panic("Data written for unrecognized " "command %#02x\n", lastCommand); @@ -453,12 +469,9 @@ X86ISA::I8042::write(PacketPtr pkt) case ReadOutputPort: panic("i8042 \"Read output port\" command not implemented.\n"); case WriteOutputPort: - warn("i8042 \"Write output port\" command not implemented.\n"); lastCommand = WriteOutputPort; break; case WriteKeyboardOutputBuff: - warn("i8042 \"Write keyboard output buffer\" " - "command not implemented.\n"); lastCommand = WriteKeyboardOutputBuff; break; case WriteMouseOutputBuff: |