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* [mubios] Initialize the 8042 keyboard controllerRichard Qin16 hours1-0/+1
| | | | | | | | | | | | | | | POST only unmasked IRQ1 in the PIC and never configured the 8042 itself, so the keyboard stayed in its post-reset disabled state: the clock was inhibited and no scan code ever reached the output buffer. IRQ1 never fired, the BDA keyboard buffer stayed empty, and GRUB polling INT 16h AH=01h never saw a key. Add kbd_init() to disable both ports, drain the output buffer, clear the clock inhibit bits in the command byte, enable the keyboard and auxiliary IRQs and select set 1 translation, then enable scanning with 0xF4. The IRQ1 handler now checks the status register for a pending output byte before reading the data port and drops auxiliary port bytes. The set 2 break prefix tracking is gone because translation is enabled.
* [mubios] Initialize VGA mode and serial BIOS servicesRichard Qin37 hours1-0/+2
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* [mubios] Add CHS disk services and multi-sector PIO readsRichard Qin37 hours1-0/+1
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* [mubios] Add EDD parameters and normalize PS/2 inputRichard Qin38 hours1-0/+2
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* [mubios] Implement INT 16h Keyboard ServiceRichard Qin2 days1-0/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement INT 15h E820hRichard Qin2 days1-0/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Extend registers from 16-bit to 32-bitRichard Qin2 days1-8/+11
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Multi-sector INT 13h AH=42hRichard Qin2 days1-1/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add Interrupt Dispatch ServiceRichard Qin2 days1-0/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add C implementation of INT 10hRichard Qin2 days1-0/+5
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Establish the BIOS interrupt register contextRichard Qin2 days1-0/+41
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Add ATARichard Qin2 days2-0/+12
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Enable IRQ0Richard Qin2 days1-0/+1
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Create 16-bit entry points for IRQ0/IRQ1 and install the IVT vectors.Richard Qin2 days1-0/+2
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement the PIC and PIT.Richard Qin2 days1-0/+3
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Implement the COM1 serial port driver and POST output.Richard Qin3 days2-0/+47
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Initialize IVT, BDA and EBDA.Richard Qin3 days1-1/+17
| | | | Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
* [mubios] Building a 32-bit C entry in protected modeRichard Qin3 days1-0/+27
Signed-off-by: Richard Qin <richard.qin.x@gmail.com>
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