openslx-ng/ipxe.git/src/arch/i386/scripts, branch master

[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

[prefix] Pad .text16 and .data16 segment sizes at build time

2016-02-12T14:04:51+00:00

Commit c64747d ("[librm] Speed up real-to-protected mode transition under KVM") rounded down the .text16 segment address calculated in alloc_basemem() to a multiple of 64 bytes in order to speed up mode transitions under KVM. This creates a potential discrepancy between alloc_basemem() and free_basemem(), meaning that free_basemem() may free less memory than was allocated by alloc_basemem(). Fix by padding the calculated sizes of both .text16 and .data16 to a multiple of 64 bytes at build time. Debugged-by: Yossef Efraim Signed-off-by: Michael Brown

[build] Allow building PCI ROMs with device ID lists

2015-04-15T11:20:06+00:00

PCI v3.0 supports a "device list" which allows the ROM to claim support for multiple PCI device IDs (but only a single vendor ID). Add support for building such ROMs by scanning the build target element list and incorporating any device IDs into the ROM's device list header. For example: make bin/8086153a--8086153b.mrom would build a ROM claiming support for both 8086:153a and 8086:153b. Signed-off-by: Michael Brown

[prefix] Use .bss16 as temporary stack space for calls to install_block

2015-02-24T16:33:14+00:00

Some decompression algorithms (e.g. LZMA) require large amounts of temporary stack space, which may not be made available by all prefixes. Use .bss16 as a temporary stack for the duration of the calls to install_block (switching back to the external stack before we start making calls into code which might access variables in .bss16), and allow the decompressor to define a global symbol to force a minimum value on the size of .bss16. 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

[romprefix] Add a dummy ROM header to cover the .mrom payload

2012-06-12T14:15:03+00:00

The header of a .mrom image declares its length to be only a few kilobytes; the remainder is accessed via a sideband mechanism. This makes it difficult to append an additional ROM image, such as an EFI ROM. Add a second, dummy ROM header covering the payload portion of the .mrom image, allowing consumers to locate any appended ROM images in the usual way. Signed-off-by: Michael Brown

[build] Fix building on mildly deranged versions of binutils

2011-04-29T00:27:36+00:00

Some versions of binutils have curious concepts of what constitutes subtraction. For example: 0x00000000000000f0 _text16_late = . 0x0000000000000898 _mtext16 = . 0x0000000000000898 _etext16 = . 0x0000000000000898 _text16_late_filesz = ABSOLUTE ((_mtext16 - _text16_late)) 0x00000000000007a8 _text16_late_memsz = ABSOLUTE ((_etext16 - _text16_late)) This has interesting side-effects such as producing sizes for .bss segments that are negative, causing the majority of addressable memory to be zeroed out. Fix by using the form ABSOLUTE ( x ) - ABSOLUTE ( y ) rather than ABSOLUTE ( x - y ) Reported-by: H. Peter Anvin Suggested-by: H. Peter Anvin Tested-by: H. Peter Anvin Signed-off-by: Michael Brown

[linux] Make malloc and linux_umalloc valgrindable

2011-03-27T20:03:05+00:00

Make the allocators used by malloc and linux_umalloc valgrindable. Include valgrind headers in the codebase to avoid a build dependency on valgrind. Signed-off-by: Piotr Jaroszyński Modified-by: Michael Brown Signed-off-by: Michael Brown

[build] Use unique entry symbols for each prefix

2011-02-23T21:12:56+00:00

Some binutils versions will drag in an object to satisfy the entry symbol; some won't. Try to cope with this exciting variety of behaviour by ensuring that all entry symbols are unique. Remove the explicit inclusion of the prefix object on the linker command line, since the entry symbol now provides all the information needed to identify the prefix. Signed-off-by: Michael Brown

[build] Ensure an entry point symbol exists in all builds

2011-02-23T20:23:03+00:00

Commit 623469d ("[build] Eliminate unused sections at link-time") introduced a regression in several build formats, in which the prefix would end up being garbage-collected out of existence. Fix by ensuring that an entry symbol exists in each possible prefix, and is required by the linker script. Signed-off-by: Michael Brown