1cd74716b1
Fix typo in clock.c outb_cmos call.
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Register and value were reversed.
2008-05-13 22:29:42 -04:00
ee55c76701
Reduce ide stack usage by reorganizing ata calls.
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Break up some functions and play with inlining to reduce stack usage.
2008-05-13 00:18:20 -04:00
5c4a8c6554
Add tool to check stack usage of 16bit code.
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This tool analyzes the assembler and can approximate the stack usage
of the various entry points.
2008-05-12 23:50:16 -04:00
a2d1692763
Add compile options to reduce stack usage.
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Add -fno-defer-pop
Add --param large-stack-frame=8 to prevent stack explosion on gcc 4.3.
2008-05-12 23:44:57 -04:00
7453453944
Use a linker script for 16bit code.
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With a linker script the data sections can be grouped by themselves
instead of being dispersed throughout the code.
2008-05-12 18:28:58 -04:00
59fead6413
Fix elf build; rename target file rom.bin to bios.bin.
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The main output file is now called out/bios.bin (instead of out/rom.bin).
Use ld to build final elf file and call the result out/bios.bin.elf
Make sure to long jump from external 32bit entry point.
2008-05-10 15:49:20 -04:00
4b39b82790
Support 32bit entry point and an elf wrapped binary.
2008-05-08 21:47:33 -04:00
1812e20b4b
Add support for sending debug messages to a serial port.
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Enable by turning on CONFIG_DEBUG_SERIAL option.
2008-05-07 21:29:50 -04:00
d9b0659a82
This patch does:
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- Rename BX_* options to CONFIG_* (rombios32.c)
- Add QEMU_SUPPORT compile time option (config.h)
- Properly check compile options, so we can turn off them by assigning
them values of 0s. (rombios32.c)
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
2008-05-06 20:00:12 -04:00
2ad37441d3
Minor cleanups.
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Several minor comment improvements.
Rearrange some definitions to make them more clear.
2008-05-06 19:49:01 -04:00
0b6972591b
Expand floppy_ret to show function names when return code is a failure.
2008-04-24 20:43:24 -04:00
117fc21837
Compile fixes for gcc 4.3.
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Clean up some warnings.
Make sure floppy_dbt structure is aliagned to 1 byte boundary.
2008-04-13 18:17:02 -04:00
e6eb3f5022
Move timer setup from post.c to clock.c.
2008-04-13 17:37:41 -04:00
913cc2e089
Move serial/lpt setup from post.c to serial.c
2008-04-13 17:31:45 -04:00
9f0d94dee3
Move hard drive init from post.c to ata.c.
2008-04-13 17:25:30 -04:00
3bbcc14d94
Move floppy setup code from post.c to floppy.c.
2008-04-13 17:07:33 -04:00
109432efbb
Fix typo causing fdpt1 from structure from being populated.
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Also, remove redundant call to init_boot_vectors().
2008-04-13 16:59:49 -04:00
ba2d0df1db
Add compile options to Makefile to reduce stack space.
2008-04-13 16:59:03 -04:00
74f9c0879b
Use __always_inline to force inlining.
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Before, inline was enough to force inlining.
2008-04-13 16:57:16 -04:00
0257b4a572
Fix asm dependencies on segment based writes.
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The variable was marked as an input instead of an output.
This could cause gcc bugs - it also forced the asm to be volatile.
2008-04-12 09:03:34 -04:00
800eab5f24
Fix bug causing low memory configs to be off by 1024 in e820 maps.
2008-04-12 09:01:23 -04:00
52c1a8aa4c
Fix typo - a memcpy should have been memset in rombios32.c
2008-04-12 09:00:40 -04:00
5e4235f2c0
Memset should return 'void *' - just to conform to standards.
2008-04-12 09:00:04 -04:00
dfabfe00d9
Fix bug causing write corruption on large disks.
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Writes past 1<<28 sectors were not correct - corruption occurs.
2008-04-05 21:08:57 -04:00
98123b53ef
Port fix from bochs-bios for incorrect acpi on boxes < 16M.
2008-04-05 21:07:21 -04:00
06ad44ee1e
Introduce cpu_relax() and use it in busy loops.
2008-04-05 19:30:02 -04:00
e0113c99c0
Forward port new boot menu features from bochs bios.
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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.
2008-04-05 15:51:12 -04:00
567e4e3d34
Make several functions non-inline.
2008-04-05 11:37:51 -04:00
595fb46812
Add s64 type to types.h.
2008-04-05 10:47:13 -04:00
0bb2a44ea4
Minor enhancements to README file.
2008-04-01 21:09:05 -04:00
18f368edc5
Don't clobber %esp highbits on C code entry.
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Theoretically, %esp high bits could be set - the C code will use %esp
(not %sp), so these bits need to be zeroed. However, they can't
be clobbered, so the entry code needs to save/restore it.
Also improve some comments in romlayout.S
2008-03-31 21:56:04 -04:00
67c2cf387f
Avoid using volatile on GET/SET_VAR macros.
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Instead of using volatile, use a dummy variable definition so the
compiler can track the link between segment updates and accesses.
This gives gcc more flexibility in instruction scheduling.
Also update GET/SET_VAR macros to support signed integer variants.
2008-03-30 23:32:19 -04:00
41d2810e0e
Minor cleanup of GET_VAR usage in output.c.
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Don't cast to a u8 - instead, cast the pointer to a u8*.
2008-03-30 23:22:39 -04:00
438f63515c
Minor cleanups.
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Rename EBDA_SEG to SEG_EBDA - it is more consistent with other defs.
Introduce SEG_BDA definition and use it instead of 0x0000 wherea appropriate.
Move ACPI_DATA_SIZE to CONFIG_ACPI_DATA_SIZE and move to config.h
Use an alias (PORT_HD_DATA) for io port 0x03f6.
2008-03-30 21:46:53 -04:00
838f08fcb9
Update README file with more information on using the bios.
2008-03-30 11:07:42 -04:00
2e7ab8b3e7
Unify checksum functions.
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Several checksum functions were scattered through source - use just one.
2008-03-29 14:29:35 -04:00
46df61c21d
Fix bugs in GET/SET_FARPTR macros.
2008-03-29 14:28:00 -04:00
840c5349f5
Cleanup boot order determination.
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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.
2008-03-29 14:04:34 -04:00
56a506d9d6
Merge IPL segment into EBDA segment.
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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.
2008-03-29 13:15:36 -04:00
a6b9f715d9
Refactor ata code.
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Have await_ide return status code (so callers don't need to reread status).
Introduce pause_await_ide for cases where we need to wait an ata cycle.
Implement 400ns wait according to ata specs.
Consistently used 'driveid' instead of 'biosid', 'devid', 'device'.
Unify cdrom and hd transfer code into single function - ata_transfer.
Use less inlining.
Remove unused ebda variable 'trsfbytes'.
2008-03-29 12:53:57 -04:00
0cdac0e620
Reorder basic_access() to reduce stack usage.
2008-03-29 12:45:53 -04:00
f06f03a872
Minor debugging improvements.
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Support '%p' format in bprintf.
Display pointer of register in debug output (useful for calculating
start stack).
2008-03-29 12:44:32 -04:00
f888f8c55c
Move internal defs from ata.h to ata.c.
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With -fwhole-program it is not necessary to put inline functions into
headers. So, move the internal defs and code to ata.c.
2008-03-23 00:04:54 -04:00
aa7ddd79b0
Limit cdrom emulation available functions.
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The extended read methods must be disabled.
Resynch with original bochs bios list of available functions.
2008-03-22 23:58:26 -04:00
f04d5c7905
Remove redundant debug statements from disk.c.
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Calls to disk_ret with an error code already log - don't log twice.
2008-03-22 23:57:21 -04:00
aa2590c558
Cleanup cdrom emulation.
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Remove 'header' param for ata_cmd_packet - the only code that uses it
is cdrom emulation. So, bury this detail in ata.c.
Introduce new helpers cdrom_read_emu and cdrom_read_512 for working
with emulated cdrom drives.
Unify basic_access() and emu_access() - now basic_access() can read
from cdrom drives.
2008-03-22 23:13:24 -04:00
070231b908
Use "FARPTR" consistently in macros.
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Rename MAKE_32_PTR to MAKE_FARPTR.
Rename PTR_TO_SEG to FARPTR_TO_SEG.
Rename PTR_TO_OFFSET to FARPTR_TO_OFFSET.
2008-03-22 20:44:37 -04:00
fad2da831d
Fix disk_1301 handler.
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regs->ah was getting clobbered in call to disk_ret().
2008-03-22 20:37:44 -04:00
dfa165052c
Breakout cdrom emulation support into CONFIG_CDROM_EMU.
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This allows one to support just booting from cdroms that don't require
floppy/harddisk emulation.
2008-03-22 20:13:08 -04:00
faa8b6f1bb
Guard header file pci.h
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Compilation on Ubuntu fails without this.
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
2008-03-21 13:32:34 -04:00
Kevin O'Connor