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Enhance build to detect and avoid gcc with broken -fwhole-program
Also, remove workaround for older gcc that mess up global exports.
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Patch from Stefan Reinauer; modified by Kevin O'Connor.
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Add CONFIG_BOOTMENU_WAIT option with delay time (in milliseconds).
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Don't just try floppy/cdrom/harddrive - try any available boot method.
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Add boot menu option for CBFS payloads.
Rework "override" system so that it is done per BEV.
Add file prefix scanning code to CBFS.
Add CBFS payload launching support.
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Don't panic (that turns off irqs), instead spin with irqs enabled.
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Save ATA harddrive model name so that it can be shown from menu.
Minor - use "ata0-1" not "ata0 slave".
Fill fdpt info based on BIOS drive id - not the controller id.
Add BCV support to IPL code.
Use "BCV" system to set harddrive order (for both ata and option roms).
Also, don't show floppy/cdrom in boot menu if no drives found.
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Make sure every IPL entry has a description.
Remove output printing helpers - have each caller output what they want.
Add strtcpy function to ensure descriptions don't go over 32 characters.
Breakup code to launch each IPL entry to its own function.
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Simplify keyboard handling in post_menu.c, and move to util.c.
Move remaining functions in post_menu.c to boot.c; remove post_menu.c.
Also, remove broken check for F12 when in boot menu.
Move BEV setup code from post.c to boot.c.
Move option rom BEV adding code from optionroms.c to boot.c.
Avoid calling BX_PANIC during boot if there is an alternative.
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Define and use a struct for the master boot record.
Simplify cdrom emulation chs setting code.
Fix an apparent bug in harddrive chs setting - it wasn't properly
masking the spt/cyl fields.
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The "flat" mode variants work in real mode, but will not work in
protected mode. So, replace with versions that take explicit
segments.
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The term "far pointer" is used in many 16bit specs, and it is
different from what MAKE_FARPTR creates. So, use the term "flat
pointer" in the code to distinguish between the two meanings.
Also, use the suffix "_fl" consistently when working with "flat
pointers".
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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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Using the struct at all callers reduces the parameter assignments.
Replace ata_op_s with new disk_op_s and update all users.
Unify basic/extended_access methods to use new send_disk_op() func.
Remove cdrom_read_emu -- integrate logic into callers.
Remove ata.h -- move all defs to disk.h
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The cdemu is setup in the boot stage after globals are made
read-only. So, globals can't be used.
Also, move hdcount from a global to BDA (it should be in BDA).
Don't attempt to set blksize/sector count in atapi_is_ready() - it's
not useful.
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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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The boot sequence variable remains in ebda.
Move boot specific definitions to a new header (boot.h)
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The dpte, cdrom locks, and disk sector count remain in the ebda.
Also, enhance SET_GLOBAL macro to avoid unused variable warnings.
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Define them using their native types (pointers).
Also, fix an apparent bug in mptable coreboot processing - it
incorrectly overwrote the pir_loc variable.
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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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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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The boot entry points should not require 16bit mode, so use 32bit mode
instead.
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The string is special, so it's better to define it in assembler.
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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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Apparently, some VGA option roms will enable serial irqs - this could
cause problems with spurious irqs from debug messages.
Also, improve debugging of option roms that fail the checksum check.
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This allows one to easily enable verbose output from handlers.
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Rename BX_INFO() to dprintf() and add a "severity level" parameter.
Add CONFIG_DEBUG_LEVEL compile option to control debug verbosity.
Add more debug info to init steps of post.c.
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Read boot order nvram fields in post stage and store in a variable.
Change boot menu to update boot order instead of using separate variables.
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Support boot menu during last stage of post.
Improve description of option roms.
Support printf of "%.s" to force printing strings on stack.
Enhance memcpy so that it also works in real-mode.
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Determining which device to boot from should not depend on CONFIG_CDROM_BOOT
Instead, always use the cmos 0x38/0x3d for determining boot order.
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It does not appear that IPL info needs to be at exactly 0x9ff00.
Have IPL struct be part of ebda structure - it prevents unintended overlaps.
Also, ATA structs don't need to be packed.
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This allows one to support just booting from cdroms that don't require
floppy/harddisk emulation.
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It's more natural to call the detect code from post. It does require
some of the ATA support code be compiled in twice (once in 32bit mode
and once in 16 bit), however that only leads to a small increase in
total C code (~250 bytes).
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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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Make sure we properly try next device on failures.
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Improve some debugging messages.
Minor code clean ups.
Improve apmbios entry points (still untested).
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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 causing ata_cmd_packet to insl to wrong address.
Add new cdrom_read helper.
Join ata.hdidmap/cdidmap into one array variable.
Rename CONFIG_ELTORITO_BOOT to CONFIG_CDROM_BOOT.
Add cd emulation code.
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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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Moved floppy parameter table to its 0xefc7 location.
Define floppy base table as a struct.
Cleaned up definitions in romlayout.S
Fixed bug in handle_15c0 - wasn't clearing cf.
Clean up some post.c usages of bios tables.
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Several bug fixes.
Move ata_detect from disk.c to ata.c.
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Slightly different order to rom-scanning.
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