openslx-ng/ipxe.git/src/arch/i386/interface/pcbios, branch openslx

[bios] Add bin-x86_64-pcbios build platform

2016-02-16T19:32:32+00:00

Move most arch/i386 files to arch/x86, and adjust the contents of the Makefiles and the include/bits/*.h headers to reflect the new locations. This patch makes no substantive code changes, as can be seen using a rename-aware diff (e.g. "git show -M5"). This patch does not make the pcbios platform functional for x86_64; it merely allows it to compile without errors. Signed-off-by: Michael Brown

[bios] Allow rtc_entropy.c to be compiled for x86_64

2016-02-16T19:32:32+00:00

Signed-off-by: Michael Brown

[bios] Use intptr_t when casting .text16 function pointers

2016-02-16T19:32:32+00:00

Signed-off-by: Michael Brown

[i386] Add check_bios_interrupts() debug function

2016-01-12T08:27:59+00:00

Provide a debug function check_bios_interrupts() to look for changes to the interrupt vector table. This can be useful when investigating the behaviour (including crashes) of external PXE NBPs. Signed-off-by: Michael Brown

[build] Generalise CONSOLE_VESAFB to CONSOLE_FRAMEBUFFER

2015-10-16T15:38:39+00:00

The name "vesafb" is intrinsically specific to a BIOS environment. Generalise the build configuration option CONSOLE_VESAFB to CONSOLE_FRAMEBUFFER, in preparation for adding EFI framebuffer support. Existing configurations using CONSOLE_VESAFB will continue to work. Signed-off-by: Michael Brown

[fbcon] Move margin calculations to fbcon.c

2015-10-14T21:16:45+00:00

Signed-off-by: Michael Brown

[fbcon] Allow character height to be selected at runtime

2015-10-14T21:16:40+00:00

Signed-off-by: Michael Brown

[pci] Use flat real mode to call INT 1a,b101

2015-06-23T19:51:19+00:00

Some HP BIOSes (observed with an HP ProLiant m710p Server Cartridge) have a bug in the implementation of INT 1a,b101: they blithely assume that real-mode code is able to read from anywhere in the 32-bit memory space. This problem affects the call to INT 1a,b101 made from within pcibios_num_bus() (which uses REAL_CODE() and hence executes in genuine real mode) but does not affect the call made from within romprefix.S (since with a PMM BIOS, that call executes in flat real mode anyway). Work around the problem by explicitly calling flatten_real_mode() before invoking INT 1a,b101. This is a rarely-used code path, and so the extra overhead of emulating instructions in some VM configurations (see commit 6d4deee ("[librm] Use genuine real mode to accelerate operation in virtual machines") for more details) is negligible. Reported-by: Wissam Shoukair Debugged-by: Wissam Shoukair Debugged-by: Michael Brown Signed-off-by: Michael Brown

[int13con] Add basic ability to log to a local disk via INT 13

2015-05-19T11:58:03+00:00

Several popular public cloud providers do not provide any sensible mechanism for obtaining debug output from an OS which is failing to boot. For example, Amazon EC2 provides the "Get System Log" facility, which occasionally deigns to report a random subset of the characters emitted via the VM's serial port, but usually returns only a blank screen. (Amazingly, this is still superior to the debugging facilities provided by Azure.) Work around these shortcomings by adding a console type which sends output to a magically detected raw disk partition, and including such a partition within any iPXE .usb-format image. To use this facility: - build an iPXE .usb image with CONSOLE_INT13 enabled - boot the cloud VM from this image - after the boot fails, attach the VM's boot disk to a second VM - from this second VM, use "less -f -R /dev/sdb3" (or similar) to view the iPXE output. Signed-off-by: Michael Brown

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02T16:35:29+00:00

These files cannot be automatically relicensed by util/relicense.pl since they either contain unusual but trivial contributions (such as the addition of __nonnull function attributes), or contain lines dating back to the initial git revision (and so require manual knowledge of the code's origin). Signed-off-by: Michael Brown