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Always disable irqs at start of each entry point.
Be consistent with clearing direction flag after disabling interrupts.
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Use custom timeouts when issuing a reset.
Handle 1-byte returns from reset in ps2 code.
Do full keyboard reset even in coreboot mode.
Send set scan mode command during reset.
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Change license of contributions from Kevin O'Connor from GPLv3 to
LGPLv3 (or later). Since the work as a whole is based on Kevin's
contributions and the "bochs bios" which has a license of LGPL (v2 or
later), this effectively makes the work as a whole available under
LGPLv3 (or later).
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Discard reads from real-time events or from a different device.
Also, improve the kbd/mouse diagnostic messages.
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Avoid using call16_int() -- it consumes too much stack space.
Instead, use a new function (call16_simpint). This assumes that
the handler wont corrupt regs - which should be a safe assumption,
because if they did corrupt regs they wouldn't work on any bios.
Avoid enabling irqs in the hw irq handlers - there are no loops in the
handlers that could cause any notable latency.
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For those places that repeatedly read/write to the ebda, caching the
ebda segment improves code generation.
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Also, only route hw irqs to their handlers when they are enabled.
(This ensures that if a subsystem is disabled that the default
hwirq handler will be used.)
Add helper macros to declare the extern asm handlers.
Always enable the RTC hwirq at startup (as opposed to when it is first
used).
Fix bug in default handler - wrong bit was used for checking the
cascaded irq.
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Update TODO list.
Improve comments in boot.c.
Use debug port 0x0402 instead of 0x0403 (bochs prefers the latter).
Fix formatting of debug messages in kbd.c.
Use proper return check for kbd and mouse init.
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Some devices only respond with 1 byte - if they timeout reading the
second byte, don't fail the whole operation - just continue and
handle the 1 byte.
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Added options CONFIG_BOOT, CONFIG_SERIAL, CONFIG_LPT, CONFIG_KEYBOARD,
CONFIG_BOOTMENU.
Also extended coverage of existing options to ensure full code got
removed.
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Use command sending code for communicating with the ps2 port.
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Minor code cleanups.
Fix parenthesis imbalance in keyboard led test.
The printf() call is only used in 32bit mode - make this explicit to
the compiler - it improves the code generation.
Clear the screen after initializing the vga option rom.
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Replace DEBUGF calls with dprintf calls.
Make ata calls consistently use 'int' return codes.
Make each error return code in ata.c use a unique negative number.
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Add new file (pic.h) with helpers for accessing the PIC.
Move irq enabling code to the files that use those interrupts.
Also, don't setup for floppy if floppy support not enabled.
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This allows one to easily enable verbose output from handlers.
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It isn't necessary to save ebp - just mark it as clobbered.
The only important flag to save/restore is irqs - manually fixup all callers.
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Don't back up all registers on isr handlers - they don't read/modify
them. This saves stack space.
extended_bios_data_area_s must be packed to match ebda spec.
Enable irqs on int 08 - follows old bochs bios code.
Fix bug in int 76 -- should clear disk_interrupt_flag not
floppy_harddisk_info.
Make sure we alert in disk_ret on failure case.
int 18/19 entry points need to setup cld/%ds too.
asm in handle_1587 clobbers flags - note that in clobber list.
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Calling debug_exit at the end of a call doesn't help much - several of
the registers are already clobbered at this point. It also increases
stack usage because it prevents call tail optimization in many places.
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VISIBLE16 is used to mark functions externally available in 16bit code.
VISIBLE32 is for 32bit functions.
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Fix bug in post causing PIC2 to not be initialized properly.
Only run ata_detect if CONFIG_ATA enabled.
Improve debugging aids - introduce debug_isr(); move DEBUGF to each file.
Enable mouse by default.
Fix bug in floppy causing extra test of PORT_FD_STATUS on recalibrate.
Always disable/enable kbd in handle_09 event.
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The code doesn't work, but most things are present.
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