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2015-04-06New mechanism to define SRAM/memory map with automatic bounds checkingJulius Werner
This patch creates a new mechanism to define the static memory layout (primarily in SRAM) for a given board, superseding the brittle mass of Kconfigs that we were using before. The core part is a memlayout.ld file in the mainboard directory (although boards are expected to just include the SoC default in most cases), which is the primary linker script for all stages (though not rmodules for now). It uses preprocessor macros from <memlayout.h> to form a different valid linker script for all stages while looking like a declarative, boilerplate-free map of memory addresses to the programmer. Linker asserts will automatically guarantee that the defined regions cannot overlap. Stages are defined with a maximum size that will be enforced by the linker. The file serves to both define and document the memory layout, so that the documentation cannot go missing or out of date. The mechanism is implemented for all boards in the ARM, ARM64 and MIPS architectures, and should be extended onto all systems using SRAM in the future. The CAR/XIP environment on x86 has very different requirements and the layout is generally not as static, so it will stay like it is and be unaffected by this patch (save for aligning some symbol names for consistency and sharing the new common ramstage linker script include). BUG=None TEST=Booted normally and in recovery mode, checked suspend/resume and the CBMEM console on Falco, Blaze (both normal and vboot2), Pinky and Pit. Compiled Ryu, Storm and Urara, manually compared the disassemblies with ToT and looked for red flags. Change-Id: Ifd2276417f2036cbe9c056f17e42f051bcd20e81 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: f1e2028e7ebceeb2d71ff366150a37564595e614 Original-Change-Id: I005506add4e8fcdb74db6d5e6cb2d4cb1bd3cda5 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/213370 Reviewed-on: http://review.coreboot.org/9283 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Tauner <stefan.tauner@gmx.at> Reviewed-by: Aaron Durbin <adurbin@google.com>
2015-04-03program loading: unify on struct progAaron Durbin
Instead of having different structures for loading ramstage and payload align to using struct prog. This also removes arch_payload_run() in favor of the prog_run() interface. Change-Id: I31483096094eacc713a7433811cd69cc5621c43e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8849 Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-04-03program loading: introduce struct progAaron Durbin
The struct prog serves as way to consolidate program loading. This abstraction can be used to perform more complicated execution paths such as running a program on a separate CPU after it has been loaded. Currently t124 and t132 need to do that in the boot path. Follow on patches will allow the platform to decide how to execute a particular program. Note: the vboot path is largely untouched because it's already broken in the coreboot.org tree. After getting all the necessary patches pushed then vboot will be fixed. Change-Id: Ic6e6fe28c5660fb41edee5fd8661eaf58222f883 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8839 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-03-31program loading: provide one cache maintenance callbackAaron Durbin
Instead of having 2 different functions to call when a program is loaded provide a single callback with flags parameter. The previous callbacks for cache management routines did this: for_each_program_segment: arch_program_segment_loaded(start, size); arch_program_loaded(); Now, use one callback instead: for_each_program_segment: arch_segment_loaded(start, size, SEG_FINAL?); Change-Id: I3811cba92e3355d172f605e4444f053321b07a2a Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8838 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-03-27cbfs/rmodule: add architecture specific operations at stage loadIonela Voinescu
Two weak functions were added so that architecture specific operations on each segment of payload or stage can be performed. Each architecture must define its own operations, otherwise the behavior will default to do-nothing functions. This patch has been updated by to fit more in line with how program loading is currently being done. The API is the same as the original, but all call sites to stages/payloads have been updated. This is known to break any archs that use rmodule loading that needs cache maintenance. That will be fixed in a forthcoming patch. Also, the vboot paths are left as is for easier upstreaming of the rest of the vboot patches. Original-Change-Id: Ie29e7f9027dd430c8b4dde9848fa3413c5dbfbfa Original-Signed-off-by: Ionela Voinescu <ionela.voinescu@imgtec.com> Original-Reviewed-on: https://chromium-review.googlesource.com/239881 Original-Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> (cherry picked from commit c82c21ce87a4c02bd9219548a4226a58e77beef0) Signed-off-by: Aaron Durbin <adurbin@chromium.org> Change-Id: Ifcee5cd9ac5dbca991556296eb5e170b47b77af7 Reviewed-on: http://review.coreboot.org/8837 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-03-20loaders: add program_loading.h header fileAaron Durbin
Instead of two headers for payload and ramstage loading combine the 2 files into one. This also allows for easier refactoring by keeping header files consistent. Change-Id: I4a6dffb78ad84c78e6e96c886d361413f9b4a17d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8708 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-12-31Print segment clean up information only when required.Vadim Bendebury
Eliminate duplicated printout and if needed, print only changed information. BUG=none TEST=verified that the 'New segment dstaddr...' message is not duplicated anymore Original-Change-Id: Ia13593394fccbb225f2bd9ab2b9228bac29d50fb Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/199672 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> (cherry picked from commit aadf018821ebfa63d6ac9d2429ae1fb483dd6cb3) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I7544bddc4026191395cfe3b8ac66256ec223391e Reviewed-on: http://review.coreboot.org/7937 Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Tested-by: build bot (Jenkins)
2014-04-26Rename coreboot_ram stage to ramstageFurquan Shaikh
Rename coreboot_ram stage to ramstage. This is done in order to provide consistency with other stage names (bootblock, romstage) and to allow any Makefile rule generalization, required for patches to be submitted later. Change-Id: Ib66e43b7e17b9c48b2d099670ba7e7d857673386 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: http://review.coreboot.org/5567 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-03-03lib/selfboot: s_srcaddr is uninitialized.Edward O'Callaghan
s_srcaddr is uninitialized in the BSS section, leading to a garbage valued operand on the LHS of a '<' on line 383. Change-Id: Ie4fec91b09c70fb1d91ad3918ac3f60653fa1d83 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/5314 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2014-03-03selfboot: use bootmem infrastructureAaron Durbin
Instead of packing and unpacking entries in lb_mem use the bootmem infrastructure for performing sanity checks during payload loading. Change-Id: Ica2bee7ebb0f6bf9ded31deac8cb700aa387bc7a Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5303 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-03-03coreboot: introduce arch_payload_run()Aaron Durbin
The selfboot() function relied on global variables within the selfboot.c compilation unit. Now that the bounce buffer is a part of struct payload use a new architecture-specific arch_payload_run() function for jumping to the payload. selfboot() can then be removed. Change-Id: Icec74942e94599542148561b3311ce5096ac5ea5 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5300 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-03-03selfboot: store bounce buffer in struct payloadAaron Durbin
In order to break the dependency on selfboot for jumping to payload the bounce buffer location needs to be communicated. Therefore, add the bounce buffer to struct payload. Change-Id: I9d9396e5c5bfba7a63940227ee0bdce6cba39578 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5299 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-03-03coreboot: use struct payload for selfload()Aaron Durbin
In order to encapsulate more data for self loading use struct payload as the type. That way modifications to what is needed for payload loading does not introduce more global variables. Change-Id: I5b8facd7881e397ca7de1c04cec747fc1dce2d5f Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5298 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-03-03coreboot: move common code to payload_run() from selfboot()Aaron Durbin
The selfboot() routine was perfoming most of the common teardown and stack checking infrastructure. Move that code into payload_run() to prepare removal of the selfboot() function. Change-Id: I29f2a5cfcc692f7a0fe2656cb1cda18158c49c6e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5297 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-03-03coreboot: unify infrastructure for loading payloadsAaron Durbin
A payload can be loaded either from a vboot region or from cbfs. Provide a common place for choosing where the payload is loaded from. Additionally, place the logic in the 'loaders' directory similarly to the ramstage loader infrastructure. Change-Id: I6b0034ea5ebd04a3d058151819ac77a126a6bfe2 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5296 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-11-18cbfs: 64-bit cleanupsRonald G. Minnich
cbfs used u32 in a number of cases where uintptr_t was correct. This change builds for both 64-bit and 32-bit boards. Change-Id: If42c722a8a9e8d565d3827f65ed6c2cb8e90ba60 Signed-off-by: Ronald G. Minnich <rminnich@google.com> Reviewed-on: http://review.coreboot.org/4037 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-08-31Remove NRV2B compression supportPatrick Georgi
It wasn't even hooked up to the build system anymore. Change-Id: I4b962ffd945b39451e19da3ec2f7b8e0eecf2e53 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/3892 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-07-10Drop ELF remains from boot codeStefan Reinauer
This stuff is not used, so let's drop it. Change-Id: I671a5e87855b4c59622cafacdefe466ab3d70143 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3660 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10lib: Fix spellingMartin Roth
Change-Id: I999987af9cb44906e3c3135c0351a0cd6eb210ff Signed-off-by: Martin Roth <martin.roth@se-eng.com> Reviewed-on: http://review.coreboot.org/3756 Reviewed-by: Dave Frodin <dave.frodin@se-eng.com> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-05-01boot state: rebalance payload load vs actual bootAaron Durbin
The notion of loading a payload in the current boot state machine isn't actually loading the payload. The reason is that cbfs is just walked to find the payload. The actual loading and booting were occuring in selfboot(). Change this balance so that loading occurs in one function and actual booting happens in another. This allows for ample opportunity to delay work until just before booting. Change-Id: Ic91ed6050fc5d8bb90c8c33a44eea3b1ec84e32d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3139 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-05-01x86: use boot state callbacks to disable rom cacheAaron Durbin
On x86 systems there is a concept of cachings the ROM. However, the typical policy is that the boot cpu is the only one with it enabled. In order to ensure the MTRRs are the same across cores the rom cache needs to be disabled prior to OS resume or boot handoff. Therefore, utilize the boot state callbacks to schedule the disabling of the ROM cache at the ramstage exit points. Change-Id: I4da5886d9f1cf4c6af2f09bb909f0d0f0faa4e62 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3138 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-05-01coverage: use boot state callbacksAaron Durbin
Utilize the static boot state callback scheduling to initialize and tear down the coverage infrastructure at the appropriate points. The coverage initialization is performed at BS_PRE_DEVICE which is the earliest point a callback can be called. The tear down occurs at the 2 exit points of ramstage: OS resume and payload boot. Change-Id: Ie5ee51268e1f473f98fa517710a266e38dc01b6d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3135 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-04-01boot: add disable_cache_rom() functionAaron Durbin
On certain architectures such as x86 the bootstrap processor does most of the work. When CACHE_ROM is employed it's appropriate to ensure that the caching enablement of the ROM is disabled so that the caching settings are symmetric before booting the payload or OS. Tested this on an x86 machine that turned on ROM caching. Linux did not complain about asymmetric MTRR settings nor did the ROM show up as cached in the MTRR settings. Change-Id: Ia32ff9fdb1608667a0e9a5f23b9c8af27d589047 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2980 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-03-21coreboot: introduce CONFIG_RELOCATABLE_RAMSTAGEAaron Durbin
This patch adds an option to build the ramstage as a reloctable binary. It uses the rmodule library for the relocation. The main changes consist of the following: 1. The ramstage is loaded just under the cmbem space. 2. Payloads cannot be loaded over where ramstage is loaded. If a payload is attempted to load where the relocatable ramstage resides the load is aborted. 3. The memory occupied by the ramstage is reserved from the OS's usage using the romstage_handoff structure stored in cbmem. This region is communicated to ramstage by an CBMEM_ID_ROMSTAGE_INFO entry in cbmem. 4. There is no need to reserve cbmem space for the OS controlled memory for the resume path because the ramsage region has been reserved in #3. 5. Since no memory needs to be preserved in the wake path, the loading and begin of execution of a elf payload is straight forward. Change-Id: Ia66cf1be65c29fa25ca7bd9ea6c8f11d7eee05f5 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2792 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-03-19cbfs: alternative support for cbfs_load_payload()Aaron Durbin
In certain situations boot speed can be increased by providing an alternative implementation to cbfs_load_payload(). The ALT_CBFS_LOAD_PAYLOAD option allows for the mainboard or chipset to provide its own implementation. Booted baskingridge board with alternative and regular cbfs_load_payload(). Change-Id: I547ac9881a82bacbdb3bbdf38088dfcc22fd0c2c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2782 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2013-02-27selfboot: Report correct entry point address in debug message.Hung-Te Lin
Entry point in payload segment header is a 64 bit integer (ntohll). The debug message is currently reading that as a 32 bit integer (which will produce 00000000 for most platforms). Change-Id: I931072bbb82c099ce7fae04f15c8a35afa02e510 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2535 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins)
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>
2013-01-12Implement GCC code coverage analysisStefan Reinauer
In order to provide some insight on what code is executed during coreboot's run time and how well our test scenarios work, this adds code coverage support to coreboot's ram stage. This should be easily adaptable for payloads, and maybe even romstage. See http://gcc.gnu.org/onlinedocs/gcc/Gcov.html for more information. To instrument coreboot, select CONFIG_COVERAGE ("Code coverage support") in Kconfig, and recompile coreboot. coreboot will then store its code coverage information into CBMEM, if possible. Then, run "cbmem -CV" as root on the target system running the instrumented coreboot binary. This will create a whole bunch of .gcda files that contain coverage information. Tar them up, copy them to your build system machine, and untar them. Then you can use your favorite coverage utility (gcov, lcov, ...) to visualize code coverage. For a sneak peak of what will expect you, please take a look at http://www.coreboot.org/~stepan/coreboot-coverage/ Change-Id: Ib287d8309878a1f5c4be770c38b1bc0bb3aa6ec7 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2052 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Martin Roth <martin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-30Drop boot directoryStefan Reinauer
It only has two files, move them to src/lib Change-Id: I17943db4c455aa3a934db1cf56e56e89c009679f Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1959 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)