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2020-04-29arch/x86: Implement RESET_VECTOR_IN_RAMFelix Held
Add support for devices with the reset vector pointing into DRAM. This is a specific implementation that assumes a paradigm of AMD Family 17h (a.k.a. "Zen"). Until the first ljmpl for protected mode, the core's state appears to software like other designs, and then the actual physical addressing becomes recognizable. These systems cannot implement cache-as-RAM as in more traditional x86 products. Therefore instead of reusing CAR names and variables, a substitute called "earlyram" is introduced. This change makes adjustments to CAR-aware files accordingly. Enable NO_XIP_EARLY_STAGES. The first stage is already in DRAM, and running subsequent stages as XIP in the boot device would reduce performance. Finally, add a new early_ram.ld linker file. Because all stages run in DRAM, they can be linked with their .data and .bss as normal, i.e. they don't need to rely on storage available only at a fixed location like CAR systems. The primary purpose of the early_ram.ld is to provide consistent locations for PRERAM_CBMEM_CONSOLE, TIMESTAMP regions, etc. across stages until cbmem is brought online. BUG=b:147042464 TEST=Build for trembyle, and boot to ramstage. $ objdump -h cbfs/fallback/bootblock.debug Idx ,Name ,Size ,VMA ,LMA ,File off Algn 0 ,.text ,000074d0 ,08076000 ,08076000 ,00001000 2**12 1 ,.data ,00000038 ,0807d4d0 ,0807d4d0 ,000084d0 2**2 2 ,.bss ,00000048 ,0807d508 ,0807d508 ,00008508 2**2 3 ,.stack ,00000800 ,0807daf0 ,0807daf0 ,00000000 2**0 4 ,.persistent ,00001cfa ,0807e2f0 ,0807e2f0 ,00000000 2**0 5 ,.reset ,00000010 ,0807fff0 ,0807fff0 ,0000aff0 2**0 6 ,.debug_info ,0002659c ,00000000 ,00000000 ,0000b000 2**0 7 ,.debug_abbrev ,000074a2 ,00000000 ,00000000 ,0003159c 2**0 8 ,.debug_aranges,00000dd0 ,00000000 ,00000000 ,00038a40 2**3 9 ,.debug_line ,0000ad65 ,00000000 ,00000000 ,00039810 2**0 10 ,.debug_str ,00009655 ,00000000 ,00000000 ,00044575 2**0 11 ,.debug_loc ,0000b7ce ,00000000 ,00000000 ,0004dbca 2**0 12 ,.debug_ranges ,000029c0 ,00000000 ,00000000 ,00059398 2**3 Change-Id: I9c084ff6fdcf7e9154436f038705e8679daea780 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35035 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-23rules.h: Rename ENV_VERSTAGE to ENV_SEPARATE_VERSTAGEJulius Werner
When CONFIG_SEPARATE_VERSTAGE=n, all verstage code gets linked into the appropriate calling stage (bootblock or romstage). This means that ENV_VERSTAGE is actually 0, and instead ENV_BOOTBLOCK or ENV_ROMSTAGE are 1. This keeps tripping up people who are just trying to write a simple "are we in verstage (i.e. wherever the vboot init logic runs)" check, e.g. for TPM init functions which may run in "verstage" or ramstage depending on whether vboot is enabled. Those checks will not work as intended for CONFIG_SEPARATE_VERSTAGE=n. This patch renames ENV_VERSTAGE to ENV_SEPARATE_VERSTAGE to try to clarify that this macro can really only be used to check whether code is running in a *separate* verstage, and clue people in that they may need to cover the linked-in verstage case as well. Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I2ff3a3c3513b3db44b3cff3d93398330cd3632ea Reviewed-on: https://review.coreboot.org/c/coreboot/+/40582 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2020-03-06src/arch/x86: Convert to SPDX license headerPatrick Georgi
This also drops individual copyright notices, all mentioned authors in that part of the tree are listed in AUTHORS. Change-Id: Ib5a92bb46ff2b9d2928aae3763daec71747044c2 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/39284 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
2019-12-20arch/x86: Drop romcc bootblockArthur Heymans
Change-Id: I79accbe1d5a554fea75fbd866995f385f718421a Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37335 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2019-12-06arch|cpu/x86: Add Kconfig option for x86 reset vectorMarshall Dawson
Prepare for an implementation supporting the reset vector in RAM and not the traditional 0xfffffff0. Add a Kconfig symbol that can be used in place of hardcoded values. Change-Id: I6a814f7179ee4251aeeccb2555221616e944e03d Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37485 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-11-25Kconfig: Drop the C_ENVIRONMENT_BOOTBLOCK symbolArthur Heymans
The romcc bootblock will be deprecated soon and most platforms use C_ENVIRONMENT_BOOTBLOCK already. This patch drops the CONFIG_C_ENVIRONMENT_BOOTBLOCK symbol and adds CONFIG_ROMCC_BOOTBLOCK where needed. Change-Id: I773a76aade623303b7cd95ebe9b0411e5a7ecbaf Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37154 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Michał Żygowski <michal.zygowski@3mdeb.com>
2019-09-10AUTHORS: Move src/arch/x86 copyrights into AUTHORS fileMartin Roth
As discussed on the mailing list and voted upon, the coreboot project is going to move the majority of copyrights out of the headers and into an AUTHORS file. This will happen a bit at a time, as we'll be unifying license headers at the same time. Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: Ifd4329905847d9dd06de67b9a443c8ee50c0e7a7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/35177 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-08-26x86: Introduce RESET_VECTOR_IN_RAM optionMartin Roth
Create a new Kconfig symbol that allows an x86 device to begin execution when its reset vector is in DRAM and not at the traditional 0xfffffff0. The implementation will follow later, this is just to setup various ENV_xxx definitions correctly for the build environment. Change-Id: I098ecf8bf200550db1e15f178f7661c1ac516dc5 Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com> Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35004 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2019-03-25Fix up remaining boolean uses of CONFIG_XXX to CONFIG(XXX)Julius Werner
This patch cleans up remaining uses of raw boolean Kconfig values I could find by wrapping them with CONFIG(). The remaining naked config value warnings in the code should all be false positives now (although the process was semi-manual and involved some eyeballing so I may have missed a few). Change-Id: Ifa0573a535addc3354a74e944c0920befb0666be Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31813 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2019-03-08coreboot: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)Julius Werner
This patch is a raw application of find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g' Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-06-06arch/x86: Use fixed size limit with RELOCATABLE_RAMSTAGEKyösti Mälkki
With RELOCATABLE_RAMSTAGE, variables RAMBASE and RAMTOP have no meaning any more. Change-Id: I711fe98a399177c2d3cb2a9dcdefba61031fb76d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/26812 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-03-23arch/x86: introduce postcar stage/phaseAaron Durbin
Certain chipsets don't have a memory-mapped boot media so their code execution for stages prior to DRAM initialization is backed by SRAM or cache-as-ram. The postcar stage/phase handles the cache-as-ram situation where in order to tear down cache-as-ram one needs to be executing out of a backing store that isn't transient. By current definition, cache-as-ram is volatile and tearing it down leads to its contents disappearing. Therefore provide a shim layer, postcar, that's loaded into memory and executed which does 2 things: 1. Tears down cache-as-ram with a chipset helper function. 2. Loads and runs ramstage. Because those 2 things are executed out of ram there's no issue of the code's backing store while executing the code that tears down cache-as-ram. The current implementation makes no assumption regarding cacheability of the DRAM itself. If the chipset code wishes to cache DRAM for loading of the postcar stage/phase then it's also up to the chipset to handle any coherency issues pertaining to cache-as-ram destruction. Change-Id: Ia58efdadd0b48f20cfe7de2f49ab462306c3a19b Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/14140 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
2016-03-03arch/x86: Allow soc/chipset to set linking addressAndrey Petrov
Until recently x86 romstage used to be linked at some default address. The address itself is not meaningful because the code was normally relocated at address calculated during insertion in CBFS. Since some newer SoC run romstage at CAR it became useful to link romstage code at some address in CAR and avoid relocation during build/run time altogether. Change-Id: I11bec142ab204633da0000a63792de7057e2eeaf Signed-off-by: Andrey Petrov <andrey.petrov@intel.com> Reviewed-on: https://review.coreboot.org/13860 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2016-02-13x86: make bootblock size for C_ENVIRONMENT_BOOTBLOCK configurableAaron Durbin
Certain platforms may need to limit their bootblock size to within a given size because specific constraints. Allow the size to be provided by the mainboard or chipset by way of the arch Kconfig being processed after those. Change-Id: I46cc6315918cde575070fa2d3e2514f28008f575 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/13691 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com> Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
2016-01-23arch/x86: link bootblock like other stages for C_ENVIRONMENT_BOOTBLOCKAaron Durbin
When C_ENVIRONMENT_BOOTBLOCK is selected link bootblock using the memlayout.ld scripts and infrastructure. This allows bootblock on x86 to utilize all the other coreboot infrastructure without relying romcc. Change-Id: Ie3e077d553360853bf33f30cf8a347ba1df1e389 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/13069 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-10-14x86: add standalone verstage supportAaron Durbin
To support x86 verstage one needs a working buffer for vboot. That buffer resides in the cache-as-ram region which persists across verstage and romstage. The current assumption is that verstage brings cache-as-ram up and romstage tears cache-as-ram down. The timestamp, cbmem console, and the vboot work buffer are persistent through in both romstage and verstage. The vboot work buffer as well as the cbmem console are permanently destroyed once cache-as-ram is torn down. The timestamp region is migrated. When verstage is enabled the assumption is that _start is the romstage entry point. It's currently expected that the chipset provides the entry point to romstage when verstage is employed. Also, the car_var_*() APIs use direct access when in verstage since its expected verstage does not tear down cache-as-ram. Lastly, supporting files were added to verstage-y such that an x86 verstage will build and link. BUG=chrome-os-partner:44827 BRANCH=None TEST=Built and booted glados using separate verstage. Change-Id: I097aa0b92f3bb95275205a3fd8b21362c67b97aa Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/11822 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-09-16x86: remove double link step for romstageAaron Durbin
Now that cbfstool supports XIP for romstage utilize it. This removes the double link steps with the cbfstool locate and add-stage sandwich. BUG=chrome-os-partner:44827 BRANCH=None TEST=Built and booted on glados. Change-Id: I1ec555f523a94dd4b15fe8186cbe530520c622c0 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/11670 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-09-09x86: link romstage and ramstage with 1 fileAaron Durbin
To reduce file clutter merge romstage.ld and ramstage.ld into a single memlayout.ld. The naming is consistent with other architectures and chipsets for their linker script names. The cache-as-ram linking rules are put into a separate file such that other rules can be applied for future verstage support. BUG=chrome-os-partner:44827 BRANCH=None TEST=Built rambi and dmp/vortex86ex. Change-Id: I1e8982a6a28027566ddd42a71b7e24e2397e68d2 Signed-off-by: Aaron Durbin <adubin@chromium.org> Reviewed-on: http://review.coreboot.org/11521 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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