diff --git a/kaleid/kernel/io/rtc.asm b/kaleid/kernel/io/rtc.asm new file mode 100644 index 0000000..93c8d4e --- /dev/null +++ b/kaleid/kernel/io/rtc.asm @@ -0,0 +1,24 @@ +;=----------------------------------------------------------------------------=; +; GNU GPL OS/K ; +; ; +; Desc: Basic Read Only Keyboard Driver ; +; (x86_64 architecture only) ; +; ; +; ; +; Copyright © 2018-2019 The OS/K Team ; +; ; +; This file is part of OS/K. ; +; ; +; OS/K is free software: you can redistribute it and/or modify ; +; it under the terms of the GNU General Public License as published by ; +; the Free Software Foundation, either version 3 of the License, or ; +; (at your option) any later version. ; +; ; +; OS/K is distributed in the hope that it will be useful, ; +; but WITHOUT ANY WARRANTY; without even the implied warranty of ; +; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; +; GNU General Public License for more details. ; +; ; +; You should have received a copy of the GNU General Public License ; +; along with OS/K. If not, see . ; +;=----------------------------------------------------------------------------=; diff --git a/kaleid/kernel/io/rtc.c b/kaleid/kernel/io/rtc.c new file mode 100644 index 0000000..4be1567 --- /dev/null +++ b/kaleid/kernel/io/rtc.c @@ -0,0 +1,40 @@ +//----------------------------------------------------------------------------// +// GNU GPL OS/K // +// // +// Desc: Interrupt related functions // +// // +// // +// Copyright © 2018-2019 The OS/K Team // +// // +// This file is part of OS/K. // +// // +// OS/K is free software: you can redistribute it and/or modify // +// it under the terms of the GNU General Public License as published by // +// the Free Software Foundation, either version 3 of the License, or // +// any later version. // +// // +// OS/K is distributed in the hope that it will be useful, // +// but WITHOUT ANY WARRANTY//without even the implied warranty of // +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // +// GNU General Public License for more details. // +// // +// You should have received a copy of the GNU General Public License // +// along with OS/K. If not, see . // +//----------------------------------------------------------------------------// + +#include +#include + +void CpuEnableRtc(void) +{ + ulong flags = KePauseIRQs(); + // Setting up the register control + IoWriteByteOnPort(0x70, 0x8A); //selects status reg A and DISABLE NMI + IoWriteByteOnPort(0x71, 0x20); + //Enabling the IRQ 8 + IoWriteByteOnPort(0x70, 0x8B); + char read = IoReadByteFromPort(0x71); // Because read causes reset + IoWriteByteOnPort(0x70, 0x8B); + IoWriteByteOnPort(0x71, read | 0x40); + KeRestoreIRQs(flags); +}