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* pbl: make PBL_FULLY_PIC specific to ARM64Ahmad Fatoum2024-03-081-1/+1
| | | | | | | | | | | | | This has only been tested on ARM64 so far and quick test on a Raspberry Pi 3 Model B in 32-bit mode hangs, so mark this ARM64-specific for now. CPU_64 implies ARM already, but we list both anyway for documentation purposes. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240306193924.712323-1-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: introduce CONFIG_PBL_FULLY_PICAhmad Fatoum2024-03-051-0/+7
| | | | | | | | | | | | | | | | In the quest for making barebox PBL code W^X mappable, we have now taken care to make the ARM64 assembly routines not emit code relocations, so let's do the same for the C code as well. We do this by setting pragma GCC visibility push(hidden) globally. This option is stronger than -fvisibility=hidden and ensures we are completely position-independent. See kernel commit e544ea57ac07 ("x86/boot/compressed: Force hidden visibility for all symbol references") for more information. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240304190038.3486881-59-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: add COMPILE_TEST prompt for PBL_VERIFY_PIGGYAhmad Fatoum2024-01-171-1/+1
| | | | | | | | | | | PBL_VERIFY_PIGGY is selected by boards that require verification of barebox proper, e.g. when secure booting. The option can also be useful during debugging, just to verify that barebox proper was not corrupted, therefore add a prompt when CONFIG_COMPILE_TEST=y. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240115170110.321676-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: set IMAGE_COMPRESSION per default to lz4Marco Felsch2022-12-161-1/+1
| | | | | | | | | | | | | | | The LZO compression hasn't been updated since 2017 and embedded build tools like Yocto dropping the support for it [1]. So switch to LZ4 as default since this seems to be the most comparable compression standard according Ahmads measurements [2] and the kernel suggestion [3]. [1] https://lore.kernel.org/all/20220524152401.1663317-9-ross.burton@arm.com/ [2] https://lore.barebox.org/barebox/20220713100922.1880282-1-a.fatoum@pengutronix.de/ [3] https://lkml.org/lkml/2020/7/1/848 Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Link: https://lore.barebox.org/20221206112614.2612071-1-m.felsch@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* kbuild: pbl: use same compression algo for both barebox and DTBAhmad Fatoum2022-07-161-1/+4
| | | | | | | | | | | | | | | | | lzop hasn't seen any activity since 2017 and has been recently removed from OpenEmbedded, which is unfortunate as we unconditionally use LZO for compressing device trees that are referenced via __dtb_z_. To make barebox easier to integrate, use the same compression algorithm for both barebox and compressed DTB. Note that the decompressor code will be in the image twice: Once in PBL in uncompressed form to decompress barebox proper and once in compressed form to decompress the DTB. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220713095730.1878941-6-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: remove redundant select UNCOMRPESSAhmad Fatoum2022-07-141-1/+0
| | | | | | | | | LZO_DECOMPRESS as well as all other decompress options already select UNCOMPRESS, so selecting it again is unnecessary. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220713095730.1878941-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: make USE_COMPRESSED_DTB a PBL-only featureAhmad Fatoum2022-07-141-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | All in-tree boards that reference __dtb_z_ symbols are already multi-image capable and allow us to compress barebox proper by having the prebootloader decompress it using the algorithm specified by the CONFIG_IMAGE_COMPRESSION_* option. DTB on the other hand, is handled specially and the optional compression is always using LZO. It makes sense to use the same CONFIG_IMAGE_COMPRESSION_* options for the DT too to make build system integration easier. To avoid special casing non-PBL support which lacks this options, just drop USE_COMPRESSED_DTB there. If linking barebox for your downstream board is broken by this: - If not multi-image capable, consider porting it to use ENTRY_FUNCTION(_WITHSTACK) instead - If you are using __dtb_z_* in barebox proper, use normal __dtb_ and compress barebox as a whole instead with CONFIG_IMAGE_COMPRESSION_* Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220713095730.1878941-2-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: add SPDX-License-Identifier for Kbuild/KconfigAhmad Fatoum2022-01-051-0/+2
| | | | | | | | | | | | | | | To verify only Kconfig/Makefile is touched: git show --numstat --format=oneline HEAD | grep -v 'Kconfig\|Makefile' will print only arch/powerpc/Kbuild. To verify nothing unexpected is added: git show -U0 | grep '^-[^-]\|^+[^+]' | sort -u Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220103120539.1730644-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl/Kconfig: fix typo "inflluences" -> "influences"Jules Maselbas2021-10-011-1/+1
| | | | | | Signed-off-by: Jules Maselbas <jmaselbas@kalray.eu> Link: https://lore.barebox.org/20210929120558.1424-1-jmaselbas@kalray.eu Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* RISC-V: erizo: migrate to PBLAhmad Fatoum2021-03-231-1/+1
| | | | | | | | | | We now have everything in place to migrate erizo to PBL. As currently, this is the only board, we can drop all non-PBL support in the same go. Cc: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* images: make BOARD_ARM_GENERIC_DT available for other archesAhmad Fatoum2021-03-231-0/+4
| | | | | | | | | | | Other architectures would benefit from the generic DT image too. Add a new arch-agnostic symbol that arches besides ARM can select. The new symbol itself should not have a prompt as the help text for each architecture likely differs (e.g. device tree handoff register). Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: remove PBL_FORCE_PIGGYDATA_COPYSascha Hauer2019-09-231-8/+0
| | | | | | | This option is unused in the tree, remove it for now. If you need this option, let me know, we'll find another solution. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: add sha256 and piggy verification to PBLRouven Czerwinski2019-08-071-0/+4
| | | | | | | | | Extract the necessary functions from sha256 into a PBL headder and add a verification function to the PBL. The function will be called before the individual architectures decompress functions is run. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: enable MIPS for PBL_RELOCATABLEOleksij Rempel2018-12-131-1/+1
| | | | | | | it is needed for multiimage support Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Add xz decompression supportSascha Hauer2014-11-041-0/+3
| | | | | | | | This adds xz decompression support from the kernel. Both compressing the barebox binary with xz and decompressing xz files on the commandline is supported. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: add lz4 supportJean-Christophe PLAGNIOL-VILLARD2013-07-221-0/+4
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Add multi images supportSascha Hauer2013-07-011-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds the make infrastructure to build multiple SoC or board specific images from a single barebox binary. The basic idea is that we no longer have a single pbl, but instead multiple pbls, one per image if necessary. Each pbl is defined by its entry function so that each pbl can do exactly what a given board needs. Additionally the pbls together with a self extracting barebox binary can be encapsulated in specific image formats. squashed in build fixes from Lucas Stach for make version >= 3.82: Split Multimage Makefile rule in explicit and implicit parts Fixes build with make version >=3.82 Frome the make 3.82 NEWS file: * WARNING: Backward-incompatibility! In previous versions of make it was acceptable to list one or more explicit targets followed by one or more pattern targets in the same rule and it worked "as expected". However, this was not documented as acceptable and if you listed any explicit targets AFTER the pattern targets, the entire rule would be mis-parsed. This release removes this ability completely: make will generate an error message if you mix explicit and pattern targets in the same rule. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Lucas Stach <dev@lynxeye.de>
* ARM: Add relocatable binary supportSascha Hauer2013-03-071-0/+10
| | | | | | | | | | | | | | | | | | For making the same binary executable on different SoCs which have different DRAM addresses we have to be independent of the compile time link address. This patch adds relocatable binary support for the ARM architecture. With this two new functions are available. relocate_to_current_adr will fixup the binary to continue executing from the current position. relocate_to_adr will copy the binary to a given address, fixup the binary and continue executing from there. For the PBL and the real image relocatable support can be enabled independently. This is done to (hopefully) better cope with setups where the PBL runs from SRAM or ROM and the real binary does not. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: add none compression supportJean-Christophe PLAGNIOL-VILLARD2013-01-301-0/+3
| | | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* pbl: move configs to pbl/KconfigJean-Christophe PLAGNIOL-VILLARD2013-01-301-0/+41
so it more easy to add new entry and to maintain Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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