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2021-10-17Only define DEFAULT_TIMEOUT if it is not already defined.jmcneill
2021-09-07Remove banner printing code from bootloaders, add it to libsa.nia
This harmonizes efiboot and the various x86 bootloaders to use shared code for printing the banner. By friendly coincidence, it also adds support for specifying 'banner=' in arm efiboot's boot.cfg, as on x86.
2021-05-30Add "root" command to provide a BTINFO_ROOTDEVICE parameter.mlelstv
2021-05-27add bi-endian support to the libsa ufs reader and enable it in efiboot.mrg
ffs frontends to "ufs.c" now also define ufs_dinode_swap, ufs_indp_swap, and FS_MAGIC (moved from ufs.c #if segments.) these are used to call the right (32/64 bit) ffsv1/v2 version. ufs.c 'struct file' gains f_swapped member. accessors for d_magic, d_reclen, and d_ino are introduced (they need to be swapped.) sfter reading an inode from disk, read_inode() may call ufs_dinode_swap(). indirect block number and caches may be swapped. error handling in ffs_find_superblock() is cleaned up. (size is slightly reduced on some ports with this part.) defaults for new defines added to ufs.c. (XXX: we build ufs.c but i think all the consumers don't use it, and we can stop building it.) LFS support is not included. add a cut-down copy of ffs_bswap.c from the kernel. also enable bi-endian disklabel support in efiboot. most ports build and sizes compared for platforms that don't enable this code and all but one saw reduced code size. booted several platforms with new boot code.
2021-05-26in getdisklabel() swap the other-endian disklabel, #ifdef LIBSA_DISKLABEL_EImrg
2021-05-21Capture the endianness of the ELF file loaded in 'netbsd_elf_data', thejmcneill
same way we do already for the class in 'netbsd_elf_class'.
2021-05-17move bi-endian disklabel support from the kernel and libsa into libkern.mrg
- dkcksum() and dkcksum_sized() move from subr_disk.c and from libsa into libkern/dkcksum.c (which is missing _sized() version), using the version from usr.sbin/disklabel. - swap_disklabel() moves from subr_disk_mbr.c into libkern, now called disklabel_swap(). (the sh3 version should be updated to use this.) - DISKLABEL_EI becomes a first-class option with opt_disklabel.h. - add libkern.h to libsa/disklabel.c. this enables future work for bi-endian libsa/ufs.c (relevant for ffsv1, ffsv2, lfsv1, and lfsv2), as well as making it possible for ports not using subr_disk_mbr.c to include bi-endian disklabel support (which, afaict, includes any disk on mbr-supporting platforms that do not have an mbr as well as disklabel.) builds successsfully on: alpha, i386, amd64, sun2, sun3, evbarm64, evbarm64-eb, sparc, and sparc64. tested in anita on i386 and sparc, testing in hardware on evbarm64*.
2021-05-12push the FFSv1 superblock code into ffs_find_superblock() andmrg
hide all the ugliness in this function, out of ufs_open(). NFC, objects same size if not identical.
2021-03-26Twiddle also for data transfer for seek.rin
2020-12-19Fix previous; define missing lfs_version.rin
2020-12-19ufs_open(): Check fs->lfs_version ifdef LIBSA_*L*FS, not LIBSA_*F*FS.rin
This was harmless for FFS variants, that define LIBSA_FFSv[12], not LIBSA_FFS.
2020-09-29Add a slow twiddle option. This speeds up a pmax netboot by 15% andsimonb
is only 1% slower than no twiddle.
2020-09-13Elf64_Phdr::p_offset is 64 bits, not 32jmcneill
2020-09-13Elf64_Phdr::p_flags is 32 bits, not 64jmcneill
2020-09-07remove GCC_NO_ADDR_OF_PACKED_MEMBER for several subdir buildsmrg
that are now handled by lfs_accessors.h internally.
2020-09-07oops, move GCC_NO_ADDR_OF_PACKED_MEMBER into the right header.mrg
2020-09-07apply GCC_NO_ADDR_OF_PACKED_MEMBERmrg
2020-06-27Support loading boot.cfg from non file-system based devices.jmcneill
2020-06-06Make libsa's vsnprintf() work as expected when passed a NULLthorpej
destinatino buffer.
2020-05-07Update the comments.maxv
2020-01-26Make a debug printf compile for all platformsskrll
2020-01-24Use dp->e2d_namlen rather than strlen(dp->e2d_name) in ext2fs_ls().jakllsch
Prevents garbage beyond the end of the name from appearing on screen.
2020-01-22To support big partitions we need to make sure all byte offsets are calculatedmartin
in 64 bit arithmetic. Pointed out by Rob Newberry. Unfortunately this causes a code size increase breaking some boot blocks, so conditionalize it and use 32 bit arithmetic if SA_DOSFS_NO_BIG_PART_SUPPORT is defined.
2019-11-21apply the strncmp hack only to !clang. requested by tnn.mrg
2019-11-21from the new comment:mrg
* XXX Hack alert. GCC 8.3 mis-compiles this function and calls * strncmp() with the wrong second pointer, as seen in PR#54703. * * Until the real cause is located, work around it by using -O1 * for this function. this hack is restricted to i386.
2019-10-17Make sure we're dealing with a static binary. Otherwise we could crash ifmaxv
the user mistakenly tries to boot a KASLR kernel with 'boot' instead of 'pkboot'. Now we fail cleanly. Reported by cryo@.
2019-07-21Add SA_ENABLE_BIENDIAN option, which enable us to load kernel image ofrin
opposite byte order (for arm EFI bootloader). XXX Currently, it is restricted to load_elf*.c. It would be nice if we can recognize disklabel and filesystem of opposite byte order.
2019-06-24Now that the ufs module has been split out from ffs and ext2fs, we needpgoyette
to update the boot-loader to push all modules required to support the booted filesystem. We treat the fsmod string as a slash-separated list of module names (relative to kern.module.path), rather than as a single module path name. Note that ffsv1 and ffsv2 are still exempted from the boot-loader's auto-push, but the list of required filesystems is still noted in the source. Also note that arch/sandpoint needs a similar change. I have not made this change because I am totally unable to test it. Tested on my kernel with _no_ built-in file-systems and with the ffs bootloader settings of fsmod enabled.
2019-06-20Add KASLR support in UEFI.maxv
2019-04-05Go back ot using 0x%x instead of %#x because we don't always support thechristos
format. See subr_prf.c
2019-04-02fix sign-compare and sign-passing errors.christos
2019-03-31fix warnings, printf formats, etc.christos
2019-03-31correct debug message, d->myport has network byte order.mlelstv
2019-02-03- remove unreachable codemrg
2018-08-23Support loading read-only data sections. ARM64 ELF kernels need this. ok skrll@jmcneill
2018-06-05Use the standard build rules.christos
2018-05-27- Introduce :q modifier for make variables and make it double escape $'s sochristos
that passing variables to recursive makes with :q works as expected. - Revert :Q to work as before. - Adjust makefiles that use recursive make to use :q Discussed on tech-toolchain@ XXX: pullup 8
2018-05-09Remove annoying things, style, and fix buffer overflows.maxv
2018-04-02efiboot: try to read boot.cfg from /EFI/NetBSD on ESP of the booted disk.nonaka
2018-03-08Add missed file in previous commit.nonaka
> efiboot: system can boot from CD/DVD-ROM media.
2017-12-21Make sure we're loading a relocatable binary, to give the user a chance tomaxv
correct the kernel name if he mistakenly typed pkboot on a static kernel, without having to reboot the machine (currently the prekern sees it's a static kernel and panics).
2017-11-15Support large pages on KASLR kernels, in a way that does not reducemaxv
randomness, but on the contrary that increases it. The size of the kernel sub-blocks is changed to be 1MB. This produces a kernel with sections that are always < 2MB in size, that can fit a large page. Each section is put in a 2MB physical chunk. In this chunk, there is a padding of approximately 1MB. The prekern uses a random offset aligned to sh_addralign, to shift the section in physical memory. For example, physical memory layout created by the bootloader for .text.4 and .rodata.0: +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+ |+---------------+ |+---------------+ | || .text.4 | PAD || .rodata.0 | PAD | |+---------------+ |+---------------+ | +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+ PA PA+2MB PA+4MB Then, physical memory layout, after having been shifted by the prekern: +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+ | P +---------------+ | +---------------+ | | A | .text.4 | PAD | PAD | .rodata.0 | PAD | | D +---------------+ | +---------------+ | +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+ PA PA+2MB PA+4MB The kernel maps these 2MB physical chunks with 2MB large pages. Therefore, randomness is enforced at both the virtual and physical levels, and the resulting entropy is higher than that of our current implementaion until now. The padding around the section is filled by the prekern. Not to consume too much memory, the sections that are smaller than PAGE_SIZE are mapped with normal pages - because there is no point in optimizing them. In these normal pages, the same shift is applied. This change has two additional advantages: (a) the cache attacks based on the TLB are mostly mitigated, because even if you are able to determine that a given page-aligned range is mapped as executable you don't know where exactly within that range the section actually begins, and (b) given that we are slightly randomizing the physical layout we are making some rare physical attacks more difficult to conduct. NOTE: after this change you need to update GENERIC_KASLR / prekern / bootloader.
2017-11-13Don't process ELF sections that don't have the ALLOC flag set.maxv
NOTE: you need to update both the prekern and the bootloader after this change.
2017-11-13Revert my last revision, that is to say, don't group sections intomaxv
segments anymore. Initially I did this because I wanted to compress the sections by reducing the padding between them; but we'll handle that differently.
2017-10-18Group the sections into segments, and align to KERNALIGN only betweenmaxv
segments. Prerequisite for other changes. Unfortunately the code is not very compact, but whatever.
2017-10-13Introduce two functions, and dedup code.maxv
2017-10-13Constify offset, it must not change.maxv
2017-10-08Improve comments.maxv
2017-10-07Add a new option in libsa, to load dynamic binaries. A separate functionmaxv
is used, and it does not break in any way the generic static loader. Then, add a new "pkboot" command in the x86 bootloader, which boots a GENERIC_KASLR kernel via the prekern. (See thread on tech-kern@.)
2017-10-05try a different style of __used.christos