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2014-01-12lib/cbfs_core.c: Supply size of file as well in cbfs_get_file_contentVladimir Serbinenko
Change-Id: I5b93e5321e470f19ad22ca2cfdb1ebf3b340b252 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/4659 Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Tested-by: build bot (Jenkins)
2013-12-09Refactor usage of walkcbfs to permit access to CBFS headersAlexandru Gagniuc
walkcbfs() is used only with ROMCC. Besides finding stages during the bootblock, it's also used when applying microcode updates during the bootblock phase. The function used to return only a pointer to the data of the CBFS file, while making the header completely inaccessible. Since the header contains the length of the CBFS file, the caller did not have a way to know how long the data was. Then, other conventions had to be used to determine the EOF, which might present problems if the user replaces the CBFS file. This is not an issue when jumping to a stage (romstage), but can present problems when accessing a microcode file which has not been NULL-terminated. Refactor walkcbfs_asm to return a pointer to the CBFS file header rather than the data. Rename walkcbfs() to walkcbfs_head(), and reimplement a new walkcbfs() based on walkcbfs_head(). Thus current usage of walkcbfs() remains unaffected. The code has been verified to run successfully under qemu. Subsequent patches will change usage of walkcbfs() to walkcbfs_head where knowing the length of the data is needed. Change-Id: I21cbf19e130e1480e2749754e5d5130d36036f8e Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/4504 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-08-15CBFS: Change the signature of cbfs_decompress.Gabe Black
Instead of returning 0 on success and -1 on error, return the decompressed size of the data on success and 0 on error. The decompressed size is useful information to have that was being thrown away in that function. Change-Id: If787201aa61456b1e47feaf3a0071c753fa299a3 Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3578 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-07-11include: Fix spellingMartin Roth
Change-Id: Iadc813bc8208278996b2b1aa20cfb156ec06fac9 Signed-off-by: Martin Roth <martin.roth@se-eng.com> Reviewed-on: http://review.coreboot.org/3755 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-01-30Extend CBFS to support arbitrary ROM source media.Hung-Te Lin
Summary: Isolate CBFS underlying I/O to board/arch-specific implementations as "media stream", to allow loading and booting romstage on non-x86. CBFS functions now all take a new "media source" parameter; use CBFS_DEFAULT_MEDIA if you simply want to load from main firmware. API Changes: cbfs_find => cbfs_get_file. cbfs_find_file => cbfs_get_file_content. cbfs_get_file => cbfs_get_file_content with correct type. CBFS used to work only on memory-mapped ROM (all x86). For platforms like ARM, the ROM may come from USB, UART, or SPI -- any serial devices and not available for memory mapping. To support these devices (and allowing CBFS to read from multiple source at the same time), CBFS operations are now virtual-ized into "cbfs_media". To simplify porting existing code, every media source must support both "reading into pre-allocated memory (read)" and "read and return an allocated buffer (map)". For devices without native memory-mapped ROM, "cbfs_simple_buffer*" provides simple memory mapping simulation. Every CBFS function now takes a cbfs_media* as parameter. CBFS_DEFAULT_MEDIA is defined for CBFS functions to automatically initialize a per-board default media (CBFS will internally calls init_default_cbfs_media). Also revised CBFS function names relying on memory mapped backend (ex, "cbfs_find" => actually loads files). Now we only have two getters: struct cbfs_file *entry = cbfs_get_file(media, name); void *data = cbfs_get_file_content(CBFS_DEFAULT_MEDIA, name, type); Test results: - Verified to work on x86/qemu. - Compiles on ARM, and follow up commit will provide working SPI driver. Change-Id: Iac911ded25a6f2feffbf3101a81364625bb07746 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2182 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-04Change "VERSION*" to more determined name "CBFS_HEADER_VERSION*".Hung-Te Lin
The 'VERSION' in CBFS header file is confusing and may conflict when being used in libpayload. Change-Id: I24cce0cd73540e38d96f222df0a65414b16f6260 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2098 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2012-12-08cbfs_core.h: support for ARMv7 CBFS master headerStefan Reinauer
Change-Id: I59626200b4a92d90b46625f8dcc2ed28e6376e46 Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2008 Tested-by: build bot (Jenkins)
2012-11-30Add multi-architecture support to cbfstoolDavid Hendricks
This is an initial re-factoring of CBFS code to enable multiple architectures. To achieve a clean solution, an additional field describing the architecture has to be added to the master header. Hence we also increase the version number in the master header. Change-Id: Icda681673221f8c27efbc46f16c2c5682b16a265 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Hung-Te Lin <hungte@chromium.org> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/1944 Tested-by: build bot (Jenkins)
2012-03-14Since cbfs_core.h provides a macro that uses ntohl, make sure ntohl is availableGabe Black
Since cbfs_core.h provides a macro that uses ntohl, make sure ntohl is available by including byteorder.h Change-Id: I9ab8cb51bd680e861b28d5130d09547bb9ab3b1f Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/709 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2011-08-18export get_cbfs_header()Sven Schnelle
Change-Id: I4b6afcee3d0d169e03165a7fb48cfaef2e8253e2 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/157 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2011-08-04split CBFS support into shared core and extended functionsPatrick Georgi
The core is data structures and basic file finding capabilities, while option ROM handling, and loading stages and payloads is "extended". The core is rewritten to be BSD-l (its header already was), so can be copied to libpayload verbatim. It's also more robust in finding files in corrupted images, eg. after partial erase or update. Change-Id: Ic6923debf8bdf3c67c75746d3b31f3addab3dd74 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/114 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>