delta/syslinux.git/com32, branch syslinux-6.02-pre4

cmenu: only the spotless target should delete *.c32

2013-07-12T09:25:38+00:00

If distribution package maintainers follow the advice in
doc/distrib.txt for rebuilding the installers, they'll currently hit the
following error when executing 'make install'

    install: cannot stat ‘com32/cmenu/libmenu/*.c32’: No such file or directory

Follow what every other module does and only delete .c32 files for the
spotless target.

Signed-off-by: Matt Fleming

Merge branch 'kernel-loader' into for-hpa/elflink/firmware

2013-07-08T16:03:53+00:00

Conflicts:
	efi/efi.h

Merge tag 'syslinux-5.11-pre8' into firmware

2013-07-08T15:23:45+00:00

syslinux-5.11-pre8

Conflicts:
	NEWS
	com32/lib/Makefile
	core/conio.c
	mk/devel.mk
	mk/elf.mk

efi: implement Linux kernel handover protocol support

2013-07-08T14:47:22+00:00

The handover protocol is the preferred method of booting kernels on EFI
because it allows workarounds for various firmware bugs to be contained
in one place and applied irrespective of the chosen bootloader. Use it
if available, but ensure that we fallback to the legacy boot method.

Also, update the linux_header structure with recent changes made in the
kernel source.

Signed-off-by: Matt Fleming

Merge branch 'dynamic-debug' into elflink

2013-07-05T12:50:34+00:00

debug.c32: Dynamically enable/disable debug code at runtime

2013-07-05T12:50:03+00:00

It's useful to be able to enable (and disable) debug code at runtime,
particularly for allowing users that are unable to build their own
Syslinux releases the chance to provide useful debugging output.

For example, say a user reports trouble with their PXE stack but doesn't
have a development environment setup to turn on the debug code
themselves. With this change you can simply request that they do,

    debug.c32 -e pxe_call unload_pxe open_file

to enable the debug in those functions. By only turning on code in
specific functions we reduce the chance of disrupting the buggy
behaviour and improve the signal to noise ratio for print statements.

To disable debug code use the -d flag,

    debug.c32 -d pxe_call

To use this new feature simply do,

    if (syslinux_debug_enabled) {
        debug1();
        debug2();
        ....
    }

from within the function you wish to add debug code. Note that this
feature is not limited to print statements - you can put any code within
the conditional, such as verifying a checksum or checking for memory
leaks.

The plan is to leave the dynamic debug code built in for all prereleases
and to turn it off for final releases.

People may still want to build with all dprintf() statements enabled,
and so a new symbol, DYNAMIC_DEBUG, was introduced rather than
repurposing the old DEBUG, DEBUG_STDIO and DEBUG_PORT symbols.

Signed-off-by: Matt Fleming

mk: include $(GCCWARN) when building ELF objects

2013-07-05T12:05:16+00:00

It's currently impossible to turn on dprintf() statements in
com32/modules because $(GCCWARN) isn't used as part of $(CFLAGS).

Signed-off-by: Matt Fleming

firmware: s/set_mode/text_mode/

2013-07-04T11:29:02+00:00

We only ever use ->set_mode() to transition into text mode, so rename it
to something more suitable and drop the unused 'mode' argument.

Signed-off-by: Matt Fleming

load_linux: validate sanity of 'initrd_addr_max'

2013-07-01T16:02:04+00:00

Some kernel headers have bogus 'initrd_addr_max' fields. This field
should never be zero. Set it to the old upper limit if unspecified.
Failure to set a non-zero value for the field results in a bogus
'memlimit' value, thereby unnecessarily reserving part of the memmap.

Cc: H. Peter Anvin 
Signed-off-by: Matt Fleming

load_linux: Add dprintf statements to aid debugging

2013-07-01T11:54:06+00:00

It's useful to know why a kernel is failing to load. Sprinkle some
dprintf() statements with informative messages.

Signed-off-by: Matt Fleming