openslx-ng/ipxe.git/src/arch/x86/scripts, branch openslx

[build] Allow for the existence of small-data sections

2025-06-24T13:40:57+00:00

Signed-off-by: Michael Brown

[efi] Include Secure Boot Advanced Targeting (SBAT) metadata

2022-01-13T14:12:44+00:00

SBAT defines an encoding for security generation numbers stored as a CSV file within a special ".sbat" section in the signed binary. If a Secure Boot exploit is discovered then the generation number will be incremented alongside the corresponding fix. Platforms may then record the minimum generation number required for any given product. This allows for an efficient revocation mechanism that consumes minimal flash storage space (in contrast to the DBX mechanism, which allows for only a single-digit number of revocation events to ever take place across all possible signed binaries). Add SBAT metadata to iPXE EFI binaries to support this mechanism. Signed-off-by: Michael Brown

[build] Work around stray sections introduced by some binutils versions

2021-02-15T10:02:32+00:00

Some versions of GNU ld (observed with binutils 2.36 on Arch Linux) introduce a .note.gnu.property section marked as loadable at a high address and with non-empty contents. This adds approximately 128MB of garbage to the BIOS .usb disk images. Fix by using a custom linker script for the prefix-only binaries such as the USB disk partition table and MBR, in order to allow unwanted sections to be explicitly discarded. Reported-by: Christian Hesse Tested-by: Christian Hesse Signed-off-by: Michael Brown

[build] Allow BIOS linker script to be used with FreeBSD linker

2021-01-30T18:37:01+00:00

Add a few more ABSOLUTE() expressions to convince the FreeBSD linker that already-absolute symbols are, in fact, absolute. Signed-off-by: Michael Brown

[build] Avoid modifying load addresses when stripping .zinfo section

2021-01-30T18:37:01+00:00

Some versions of objcopy will spuriously complain when asked to extract the .zinfo section since doing so will nominally alter the load addresses of the (non-loadable) .bss.* sections. Avoid these warnings by placing the .zinfo section at the very end of the load memory address space. Allocate non-overlapping load memory addresses for the (non-loadable) .bss.* sections, in the hope of avoiding spurious warnings about overlapping load addresses. Signed-off-by: Michael Brown

[efi] Centralise architecture-independent EFI Makefile and linker script

2016-03-12T21:47:13+00:00

Signed-off-by: Michael Brown

[build] Fix building on older versions of binutils

2016-02-19T20:03:30+00:00

Some older versions of binutils have issues with both the use of PROVIDE() and the interpretation of numeric literals within a section description. Work around these older versions by defining the required numeric literals outside of any section description, and by automatically determining whether or not to generate extra space for page tables rather than relying on LDFLAGS. Signed-off-by: Michael Brown

[librm] Generate page tables for 64-bit builds

2016-02-19T03:21:38+00:00

Signed-off-by: Michael Brown

[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

[build] Fix %.licence build target

2013-07-15T22:50:54+00:00

Our use of --gc-sections causes the linker to discard the symbols defined by FILE_LICENCE(), meaning that the resulting licence determination is incomplete. We must use the KEEP() directive in the linker script to force the linker to not discard the licence symbols. Using KEEP(*(COMMON)) would be undesirable, since there are some symbols in COMMON which we may wish to discard. Fix by placing symbols defined by PROVIDE_SYMBOL() (which is used by FILE_LICENCE()) into a special ".provided" section, which we then mark with KEEP(). All such symbols are zero-length, so there is no cost in terms of the final binary size. Since the symbols are no longer in COMMON, the linker will reject symbols with the same name coming from multiple objects. We therefore append the object name to the licence symbol, to ensure that it is unique. Reported-by: Marin Hannache Signed-off-by: Michael Brown