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2015-07-13x86: flatten hierarchyStefan Reinauer
It never made sense to have bootblock_* in init, but pirq_routing.c in boot, and some ld scripts on the main level while others live in subdirectories. This patch flattens the directory hierarchy and makes x86 more similar to the other architectures. Change-Id: I4056038fe7813e4d3d3042c441e7ab6076a36384 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10901 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-07-13x86: Port x86 over to compile cleanly with x86-64Stefan Reinauer
Change-Id: I26f1bbf027435be593f11bce4780111dcaf7cb86 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Signed-off-by: Scott Duplichan <scott@notabs.org> Reviewed-on: http://review.coreboot.org/10586 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-06-20x86: make memcpy 64bit safeStefan Reinauer
This does not optimize memcpy for 64bit, it merely makes it compile. Change-Id: I69ad6bd0c3d5f617d9222643abf7a2ba7c2a0359 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Signed-off-by: Scott Duplichan <scott@notabs.org> Reviewed-on: http://review.coreboot.org/10575 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-06-17x86 cpu: Allow some cpuid functions during romstageLee Leahy
Allow calls to cpu_phys_address_size and its support functions during romstage. This enables the proper display of MTRRs during romstage without duplicating this code. BRANCH=none BUG=None TEST=Build and run on cyan Change-Id: I6f6465c150a683ce91f1494ebb5d9ac60b75b795 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 6bfd517088b6a2e8a5958a837e6c8c471de19fd0 Original-Change-Id: I429f9beb69298836acdd71d17a7bcb717939dfc2 Original-Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Original-Reviewed-on: https://chromium-review.googlesource.com/277392 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Tested-by: Leroy P Leahy <leroy.p.leahy@intel.com> Original-Commit-Queue: Leroy P Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10561 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-06-16x86: Make x86 architecture makefiles x64 awareStefan Reinauer
Almost all of the code between x86 and x64 can be shared, so select it for either architecture. Change-Id: I681149ed7698c08b702bb19f074f369699cef1bf Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Signed-off-by: Scott Duplichan <scott@notabs.org> Reviewed-on: http://review.coreboot.org/8693 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-08Remove empty lines at end of fileElyes HAOUAS
Used command line to remove empty lines at end of file: find . -type f -exec sed -i -e :a -e '/^\n*$/{$d;N;};/\n$/ba' {} \; Change-Id: I816ac9666b6dbb7c7e47843672f0d5cc499766a3 Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: http://review.coreboot.org/10446 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-06-02cbfs: new API and better program loadingAaron Durbin
A new CBFS API is introduced to allow making CBFS access easier for providing multiple CBFS sources. That is achieved by decoupling the cbfs source from a CBFS file. A CBFS source is described by a descriptor. It contains the necessary properties for walking a CBFS to locate a file. The CBFS file is then decoupled from the CBFS descriptor in that it's no longer needed to access the contents of the file. All of this is accomplished using the regions infrastructure by repsenting CBFS sources and files as region_devices. Because region_devices can be chained together forming subregions this allows one to decouple a CBFS source from a file. This also allows one to provide CBFS files that came from other sources for payload and/or stage loading. The program loading takes advantage of those very properties by allowing multiple sources for locating a program. Because of this we can reduce the overhead of loading programs because it's all done in the common code paths. Only locating the program is per source. Change-Id: I339b84fce95f03d1dbb63a0f54a26be5eb07f7c8 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9134 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-05-26coreboot: introduce boot_deviceAaron Durbin
The boot_device is a region_device that represents the device from which coreboot retrieves and boots its stages. The existing cbfs implementations use the boot_device as the intermediary for accessing the CBFS region. Also, there's currently only support for a read-only view of the boot_device. i.e. one cannot write to the boot_device using this view. However, a writable boot_device could be added in the future. Change-Id: Ic0da796ab161b8025c90631be3423ba6473ad31c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/10216 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-05-21Remove address from GPLv2 headersPatrick Georgi
As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
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>
2015-03-28build system: normalize linker script file namesPatrick Georgi
We have .lb, .lds, and .ld in the tree. Go for .ld everywhere. This is inspired by the commit listed below, but rewritten to match upstream, and split in smaller pieces to keep intent clear. Change-Id: I3126af608afe4937ec4551a78df5a7824e09b04b Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Based-On-Change-Id: I50af7dacf616e0f8ff4c43f4acc679089ad7022b Based-On-Signed-off-by: Julius Werner <jwerner@chromium.org> Based-On-Reviewed-on: https://chromium-review.googlesource.com/219170 Reviewed-on: http://review.coreboot.org/9107 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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>
2015-03-04Add stage information to coreboot bannerStefan Reinauer
As a convenience, print the actual stage name when entering a stage. Also unify the banner between bootblock / romstage and ramstage. No reason for two different occurences. Instead of this: coreboot-4.0 Tue May 13 14:13:37 PDT 2014 starting... [..] coreboot-4.0 Tue May 13 14:13:37 PDT 2014 starting... [..] coreboot-4.0 Tue May 13 14:13:37 PDT 2014 booting... you will see this: coreboot-4.0 Tue May 13 14:13:37 PDT 2014 bootblock starting... [..] coreboot-4.0 Tue May 13 14:13:37 PDT 2014 romstage starting... [..] coreboot-4.0 Tue May 13 14:13:37 PDT 2014 ramstage starting... Roughly based on: https://chromium-review.googlesource.com/199671 Change-Id: Id5894535e0551d113c80e4ff0514287391be1bef Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/8578 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-02-15x86: Change MMIO addr in readN(addr)/writeN(addr, val) to pointerKevin Paul Herbert
On x86, change the type of the address parameter in read8()/read16/read32()/write8()/write16()/write32() to be a pointer, instead of unsigned long. Change-Id: Ic26dd8a72d82828b69be3c04944710681b7bd330 Signed-off-by: Kevin Paul Herbert <kph@meraki.net> Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/7784 Tested-by: build bot (Jenkins)
2015-01-09misc: Drop print_ implementation from non-romcc boardsStefan Reinauer
Because we had no stack on romcc boards, we had a separate, not as powerful clone of printk: print_*. Back in the day, like more than half a decade ago, we migrated a lot of boards to printk, but we never cleaned up the existing code to be consistent. Instead, we worked around the problem with a very messy console.h (nowadays the mess is hidden in romstage_console.c and early_print.h) This patch cleans up the generic code pieces to use printk() on all non-ROMCC boards. Our two remaining ROMCC boards are fixed up in this commit: bifferos/bifferboard and dmp/vortex86ex. Change-Id: I16676eeabe5c892c8e3c9f3c0cd3bae2e8fd74b6 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/8115 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Andrew Wu <arw@dmp.com.tw> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2015-01-05timestamps: Switch from tsc_t to uint64_tStefan Reinauer
Cherry-pick from chromium and adjusted for added boards and changed directory layout for arch/arm. Timestamp implementation for ARMv7 Abstract the use of rdtsc() and make the timestamps uint64_t in the generic code. The ARM implementation uses the monotonic timer. Original-Signed-off-by: Stefan Reinauer <reinauer@google.com> BRANCH=none BUG=chrome-os-partner:18637 TEST=See cbmem print timestamps Original-Change-Id: Id377ba570094c44e6895ae75f8d6578c8865ea62 Original-Reviewed-on: https://gerrit.chromium.org/gerrit/63793 (cherry-picked from commit cc1a75e059020a39146e25b9198b0d58aa03924c) Change-Id: Ic51fb78ddd05ba81906d9c3b35043fa14fbbed75 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8020 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2014-11-19console: Isolate console_init() for ROMCCKyösti Mälkki
Change-Id: I623643834fb1c6af166a851fec7e31447944f0b6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7509 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-11coreboot classes: Add dynamic classes to corebootFurquan Shaikh
Provide functionality to create dynamic classes based on program name and architecture for which the program needs to be compiled/linked. define_class takes program_name and arch as its arguments and adds the program_name to classes-y to create dynamic class. Also, compiler toolset is created for the specified arch. All the files for this program can then be added to program_name-y += .. Ensure that define_class is called before any files are added to the class. Check subdirs-y for order of directory inclusion. One such example of dynamic class is rmodules. Multiple rmodules can be used which need to be compiled for different architectures. With dynamic classes, this is possible. Change-Id: Ie143ed6f79ced5f58c200394cff89b006bc9b342 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: http://review.coreboot.org/6426 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-08-07Possible thread stack implementation.Ronald G. Minnich
Architecture provides a function for thread stack base, thread code uses it. Build and boot tested on Falco with multitasking on and off. Change-Id: I5016fab47f9954379acf7702ac7965b0a70c88ed Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://gerrit.chromium.org/gerrit/66578 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Commit-Queue: Ronald G. Minnich <rminnich@chromium.org> Tested-by: Ronald G. Minnich <rminnich@chromium.org> (cherry picked from commit 3c6afef30c1a0ad6fba0fb76acc792184d924247) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6513 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-07-08arch: Trivial - drop trailing blank lines at EOFEdward O'Callaghan
Change-Id: I472f3b70226ea5236ba6fc231f0f257f0f0eed9d Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/6206 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2014-06-21Misc: Use acpi_is_wakeup_s3()Kyösti Mälkki
Change-Id: I46906e6d68775edc5cfe199cfeb465db4da2691f Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/6072 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-05-26console: Add console for GDBKyösti Mälkki
Connection of UARTs to GDB stub got lost in the console transition process, bring it back. In theory, GDB stub should work also over usbdebug, but that solution is not really tested at all yet. Change-Id: I90e05e8132889e788b92e055ee191f35add43bbc Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5343 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-05-06Introduce stage-specific architecture for corebootFurquan Shaikh
Make all three coreboot stages (bootblock, romstage and ramstage) aware of the architecture specific to that stage i.e. we will have CONFIG_ARCH variables for each of the three stages. This allows us to have an SOC with any combination of architectures and thus every stage can be made to run on a completely different architecture independent of others. Thus, bootblock can have an x86 arch whereas romstage and ramstage can have arm32 and arm64 arch respectively. These stage specific CONFIG_ARCH_ variables enable us to select the proper set of toolchain and compiler flags for every stage. These options can be considered as either arch or modes eg: x86 running in different modes or ARM having different arch types (v4, v7, v8). We have got rid of the original CONFIG_ARCH option completely as every stage can have any architecture of its own. Thus, almost all the components of coreboot are identified as being part of one of the three stages (bootblock, romstage or ramstage). The components which cannot be classified as such e.g. smm, rmodules can have their own compiler toolset which is for now set to *_i386. Hence, all special classes are treated in a similar way and the compiler toolset is defined using create_class_compiler defined in Makefile. In order to meet these requirements, changes have been made to CC, LD, OBJCOPY and family to add CC_bootblock, CC_romstage, CC_ramstage and similarly others. Additionally, CC_x86_32 and CC_armv7 handle all the special classes. All the toolsets are defined using create_class_compiler. Few additional macros have been introduced to identify the class to be used at various points, e.g.: CC_$(class) derives the $(class) part from the name of the stage being compiled. We have also got rid of COREBOOT_COMPILER, COREBOOT_ASSEMBLER and COREBOOT_LINKER as they do not make any sense for coreboot as a whole. All these attributes are associated with each of the stages. Change-Id: I923f3d4fb097d21071030b104c372cc138c68c7b Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: http://review.coreboot.org/5577 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com>
2014-04-30uart: Support multiple portsKyösti Mälkki
The port for console remains to be a compile time constant. The Kconfig option is changed to select an UART port with index to avoid putting map of UART base addresses in Kconfigs. With this change it is possible to have other than debug console on different UART port. Change-Id: Ie1845a946f8d3b2604ef5404edb31b2e811f3ccd Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5342 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-04-18console: Split ROMCC helpersKyösti Mälkki
These are potentially useful with GDB or SerialICE too. Also it reduces the amount of actual code we put in romcc_console. Change-Id: Id8c56e979660ad9f4eef39c648f68c7ec60edfba Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5339 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-04-18console: Use romstage code for ramstage and SMMKyösti Mälkki
Console is arch-agnostic and there is no need for separate implementations for romstage and ramstage. For SMM there is console only if DEBUG_SMI is selected. Change-Id: I7028eeeff8bfbb9c8552972436b29a7508834d87 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5338 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-04-09console: Refactor uart8250/NE2KKyösti Mälkki
Do this for symmetry with romstage_console.c. Change-Id: If17acfc3da07b1dbefa87162c3c7168deb7b354a Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5330 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09console: Move newline translation outside console_tx_byteKyösti Mälkki
This gives us completely transparent low-level function to transmit data. Change-Id: I706791ff43d80a36a7252a4da0e6f3af92520db7 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5336 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09console: Hide global console_loglevelKyösti Mälkki
Change-Id: I7bdc468bc3f74516abb2c583bdb5b6d7555d987c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5333 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09console: Unify do_printk()Kyösti Mälkki
Change-Id: I6c50e47d9d2d0d1f42beee477e49b2a0054d1786 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5332 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09console: Split console_init()Kyösti Mälkki
Splitting the version prompt satisfies some requirements ROMCC sets for the order in which we include source files. Also GDB stub will need console hardware before entering main(). Change-Id: Ibb445a2f8cfb440d9dd69cade5f0ea41fb606f50 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5331 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09uart: Redefine Kconfig optionsKyösti Mälkki
Option DRIVERS_UART builds with support for UART hardware. Option CONSOLE_SERIAL enables the console output for UART. Those x86 boards that do not have serial port on SuperIO should select NO_UART_ON_SUPERIO to disable 8250 UART for the default configuration. Removes: CONSOLE_SERIAL_UART HAVE_UART_IO_MAPPED HAVE_UART_MEMORY_MAPPED Renames: CONSOLE_SERIAL8250 -> DRIVERS_UART_8250IO CONSOLE_SERIAL8250MEM -> DRIVERS_UART_8250MEM Change-Id: Id3afa05f85c0d6849746886db8b6c2ed6c846b61 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5311 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-03-20rmodules: use rmodtool to create rmodulesAaron Durbin
Start using the rmodtool for generating rmodules. rmodule_link() has been changed to create 2 rules: one for the passed in <name>, the other for creating <name>.rmod which is an ELF file in the format of an rmodule. Since the header is not compiled and linked together with an rmodule there needs to be a way of marking which symbol is the entry point. __rmodule_entry is the symbol used for knowing the entry point. There was a little churn in SMM modules to ensure an rmodule entry point symbol takes a single argument. Change-Id: Ie452ed866f6596bf13f137f5b832faa39f48d26e Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5379 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2014-03-04usbdebug: Move Kconfig under drivers/usbKyösti Mälkki
This menu may become a bit more complicated with addition of new USB hardware so move it out of console/. Change-Id: Ieb330675b9227a3e53d093f7c2b5a65e3842dc82 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5307 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-03-04uart8250: Move under drivers/uartKyösti Mälkki
Change-Id: Ic65ffaaa092330ed68d891e4a09a8b86cdc04a3a Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5236 Tested-by: build bot (Jenkins)
2014-03-04uart8250mem: Unify calls with generic UARTKyösti Mälkki
NOTE: UART base for SMM continues to be broken, as it does not use the address resource allocator has assigned. Change-Id: I79f2ca8427a33a3c719adfe277c24dab79a33ef3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5235 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04uart8250io: Unify calls with generic UARTKyösti Mälkki
Change-Id: I6d56648e56f2177e1d5332497321e718df18300c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5234 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04console: Fix includesKyösti Mälkki
Do not pull in console hw-specific prototypes everywhere with console.h as those are not needed for higher levels. Move prototypes for UARTs next to other consoles. Change-Id: Icbc9cd3e5bdfdab85d7dccd7c3827bba35248fb8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5232 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04uart8250: Fix and unify baudrate divisor calculationKyösti Mälkki
Divisor is a function of requested baudrate, platform-specific reference clock and amount of oversampling done on the UART reference. Calculate this parameter with divisor rounded to nearest integer. When building without option_table or when there is no entry for baud_rate, CONFIG_TTYS0_BAUD is used for default baudrate. For OxPCIe use of 4 MHz for reference was arbitrary giving correct divisor for 115200 but somewhat inaccurate for lower baudrates. Actual hardware is 62500000 with 16 times oversampling. FIXME: Field for baudrate in lb_tables is still incorrect. Change-Id: I68539738469af780fadd3392263dd9b3d5964d2d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5229 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-02-20usbdebug: Unify console APIKyösti Mälkki
Struct dbgp_pipe would not be suitable for use with xHCI. Just use an index, it is easy to setup in Kconfig if our future debug setup has separate pipes for console output and debugging/traceings. Change-Id: Icbbd28f03113b208016f80217ab801d598d443a8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5227 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2014-02-15coreboot: infrastructure for different ramstage loadersAaron Durbin
There are 2 methods currently available in coreboot to load ramstage from romstage: cbfs and vboot. The vboot path had to be explicitly enabled and code needed to be added to each chipset to support both. Additionally, many of the paths were duplicated between the two. An additional complication is the presence of having a relocatable ramstage which creates another path with duplication. To rectify this situation provide a common API through the use of a callback to load the ramstage. The rest of the existing logic to handle all the various cases is put in a common place. Change-Id: I5268ce70686cc0d121161a775c3a86ea38a4d8ae Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5087 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-02-15x86: provide stage_exit() like armAaron Durbin
The arm architectures have a stage_exit() function which takes a void * pointer as an entry point. Provide the same API for x86. This can make the booting paths less architecture-specific. Change-Id: I4ecfbf32f38f2e3817381b63e1f97e92654c5f97 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/5086 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-02-11SMP: Add arch-agnostic boot_cpu()Kyösti Mälkki
We should not have x86 specific includes in lib/. Change-Id: I18fa9c8017d65c166ffd465038d71f35b30d6f3d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5156 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Aaron Durbin <adurbin@google.com>
2014-02-06ne2k: Move under drivers/netKyösti Mälkki
Change-Id: I978b6009c09c31be4429f57be40ef82f438f7574 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5135 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-02-06usbdebug: Move under drivers/usbKyösti Mälkki
Also relocate and split header files, there is some interest for EHCI debug support without PCI. Change-Id: Ibe91730eb72dfe0634fb38bdd184043495e2fb08 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5129 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-12-23usbdebug: Add option to disable console for romstageKyösti Mälkki
If there is trouble setting up usbdebug, it may be useful to delay usbdebug init to run in ramstage. Change-Id: I31de5a06d3f9ce19f71c422cce0c8cb0fd50f396 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/4488 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@google.com>
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>
2013-11-26Log device path into CMOS during probe stagesDuncan Laurie
One of the most common hangs during coreboot execution is during ramstage device init steps. Currently there are a set of (somewhat misleading) post codes during this phase which give some indication as to where execution stopped, but it provides no information on what device was actually being initialized at that point. This uses the new CMOS "extra" log banks to store the encoded device path of the device that is about to be touched by coreboot. This way if the system hangs when talking to the device there will be some indication where to investigate next. interrupted boot with reset button and gathered the eventlog after several test runs: 26 | 2013-06-10 10:32:48 | System boot | 120 27 | 2013-06-10 10:32:48 | Last post code in previous boot | 0x75 | Device Initialize 28 | 2013-06-10 10:32:48 | Extra info from previous boot | PCI | 00:16.0 29 | 2013-06-10 10:32:48 | Reset Button 30 | 2013-06-10 10:32:48 | System Reset Change-Id: I6045bd4c384358b8a4e464eb03ccad639283939c Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/58105 Reviewed-on: http://review.coreboot.org/4230 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2013-10-15Have option of timestamps, CBMEM console and usbdebug for most boardsKyösti Mälkki
As boards without EARLY_CBMEM_INIT do not initialize CBMEM in romstage, and have no CAR migration, these features are available for ramstage only. Change-Id: Ic3f77ccdedd4e71ba693619c02c9b98b328a0882 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3970 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-09-21ROMCC boards: Fix builds with CBMEM console, timestamps or usbdebugKyösti Mälkki
These features depend on CAR_GLOBAL region, which is not available when romstage is built with ROMCC. Exclude these from romstage, keep them available for ramstage. A follow-up patch will fix the dependencies and allows enabling these features in menuconfig. Change-Id: I9de5ad41ea733655a3fbdc734646f818e39cc471 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3919 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-08-16console: Squelch console output from AP CPUs in romstageKyösti Mälkki
Add Kconfig option SQUELCH_EARLY_SMP and have it enabled by default. Console drivers have unpredictable results if multiple threads attempt to share same resources without spinlock. Serial UARTs have not had huge problems, only distorted output, but those relying on cache-as-ram (CBMEM and usbdebug) may require this. Change-Id: I7f406fdea7b6dc6a341c4da2fab56f7b7ff568b4 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3854 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-07-14x86: Add and enable an arch verson of memmove.Gabe Black
This is from memcpy_32.c in the Linux kernel. There was no copyright header in the original file either. Change-Id: Ifd259cb8a87615dce79ed1e551cc4bacb0414b4f Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3762 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-07-10usbdebug: Move ehci_debug_info allocationKyösti Mälkki
Move ehci_debug_info allocation from console to lib, as console code was only built for ramstage. Implement dbgp_ehci_info() to return the EHCI context. Alread alias this as dbgp_console_input() and _output() to return the console stream context later on. Change-Id: Id6cc07d62953f0466df61eeb159e22b0e3287d4e Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/3625 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10arch: clean up Kconfig and MakefileStefan Reinauer
remove some unused code Change-Id: I41602fb391c1910c588a4f9dcc7c2edefe8ab5bc Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3669 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10Rename hardwaremain() to main()Stefan Reinauer
... and drop the wrapper on ARMv7 Change-Id: If3ffe953cee9e61d4dcbb38f4e5e2ca74b628ccc Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3639 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-06-06qemu: add x86 cpuGerd Hoffmann
This patch adds a qemu x86 cpu chip. It has no initialization function as this isn't needed on virtual hardware. A virtual machine can have pretty much any CPU: qemu emulates a wide range of x86 CPUs (try 'qemu -cpu ? for a list), also with 'qemu -cpu host' the guest will see a cpu which is (almost) identical to the one on the host machine. So I've added X86_VENDOR_ANY as wildcard match for the cpu_table. Change-Id: Ib01210694b09702e41ed806f31d0033e840a863f Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-on: http://review.coreboot.org/3344 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-05-14x86: add thread supportAaron Durbin
Thread support is added for the x86 architecture. Both the local apic and the tsc udelay() functions have a call to thread_yield_microseconds() so as to provide an opportunity to run pending threads. Change-Id: Ie39b9eb565eb189676c06645bdf2a8720fe0636a Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/3207 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-05-08Drop CONFIG_AP_CODE_IN_CARStefan Reinauer
This option has not been enabled on any board and was considered obsolete last time it was touched. If we need the functionality, let's fix this in a generic way instead of a K8 specific way. This was mostly a speedup hack back in the day. Change-Id: Ib1ca248c56a7f6e9d0c986c35d131d5f444de0d8 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/3211 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-05-08copy_and_run: drop boot_complete parameterStefan Reinauer
Since this parameter is not used anymore, drop it from all calls to copy_and_run() Change-Id: Ifba25aff4b448c1511e26313fe35007335aa7f7a Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/3213 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-05-08hardwaremain: drop boot_complete parameterStefan Reinauer
it has been unused since 9 years or so, hence drop it. Change-Id: I0706feb7b3f2ada8ecb92176a94f6a8df53eaaa1 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/3212 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-05-07x86 I/O APIC: Dump I/O APIC regs in `ioapic.c`Paul Menzel
Some southbridges have code in their `lpc.c` files to dump the I/O APIC registers. printk(BIOS_SPEW, "Dumping IOAPIC registers\n"); for (i=0; i<3; i++) { *ioapic_index = i; printk(BIOS_SPEW, " reg 0x%04x:", i); reg32 = *ioapic_data; printk(BIOS_SPEW, " 0x%08x\n", reg32); } Add similar code to `src/arch/x86/lib/ioapic.c` so all boards using the function `set_ioapic_id()` get the debug feature and the other boards can be more easily adapted in follow-up patches. Change-Id: Ic59c4c2213ed97bdf3798b3dc6e7cecc30e135d8 Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/3184 Reviewed-by: Aaron Durbin <adurbin@google.com> Tested-by: build bot (Jenkins)
2013-05-07x86 I/O APIC: Make functions `io_apic_{read,write}()` publicPaul Menzel
Some LPC initialiation can save some lines of code when being able to use the functions `io_apic_read()` and `io_apic_write()`. As these two functions are now public, remove them from the generic driver as otherwise we get a build errors like the following. […] Building roda/rk9; i386: ok, using i386-elf-gcc Using payload /srv/jenkins/payloads/seabios/bios.bin.elf Creating config file... (blobs, ccache) ok; Compiling image on 4 cpus in parallel .. FAILED after 12s! Log excerpt: coreboot-builds/roda_rk9/arch/x86/lib/ramstage.o: In function `io_apic_write': /srv/jenkins/.jenkins/jobs/coreboot-gerrit/workspace/src/arch/x86/lib/ioapic.c:32: multiple definition of `io_apic_write' coreboot-builds/roda_rk9/drivers/generic/ioapic/ramstage.o:/srv/jenkins/.jenkins/jobs/coreboot-gerrit/workspace/src/drivers/generic/ioapic/ioapic.c:22: first defined here collect2: error: ld returned 1 exit status make: *** [coreboot-builds/roda_rk9/generated/coreboot_ram.o] Error 1 make: *** Waiting for unfinished jobs.... […] Change-Id: Id600007573ff011576967339cc66e6c883a2ed5a Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/3180 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2013-04-18spkmodem consoleVladimir Serbinenko
Change-Id: Ie497e4c8da05001ffe67c4a541bd24aa859ac0e2 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/2987 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-23x86: mark .textfirst as allocatable and executableAaron Durbin
When the linking of ramstage was changed to use an intermeidate object with all ramstage objects in it the .textfirst section was introduced to keep the entry point at 0. However, the section was not marked allocatable or executable. Nor was it marked as @progbits. That didn't cause an issue on its own since .textfirst was directly called out in the linker script. However, the rmodule infrastructure relies on all the relocation entries being included in the rmodule. Without the proper section attributes the .rel.textfirst section entries were not being included in the final ramstage rmodule. Change-Id: I54e7055a19bee6c86e269eba047d9a560702afde Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2885 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-03-23x86: expose console_tx_flush in romstageAaron Durbin
The vboot module relied on being able to flush the console after it called vtxprintf() from its log wrapper function. Expose the console_tx_flush() function in romstage so the vboot module can ensure messages are flushed. Change-Id: I578053df4b88c2068bd9cc90eea5573069a0a4e8 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2882 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-03-21rmodule: add string functions to rmodules classAaron Durbin
The standard string functions memcmp(), memset(), and memcpy() are needed by most programs. The rmodules class provides a way to build objects for the rmodules class. Those programs most likely need the string functions. Therefore provide those standard functions to be used by any generic rmodule program. Change-Id: I2737633f03894d54229c7fa7250c818bf78ee4b7 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2821 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-21ramstage: prepare for relocationAaron Durbin
The current ramstage code contains uses of symbols that cause issues when the ramstage is relocatable. There are 2 scenarios resolved by this patch: 1. Absolute symbols that are actually sizes/limits. The symbols are problematic when relocating a program because there is no way to distinguish a symbol that shouldn't be relocated and one that can. The only way to handle these symbols is to write a program to post process the relocations and keep a whitelist of ones that shouldn't be relocated. I don't believe that is a route that should be taken so fix the users of these sizes/limits encoded as absolute symbols to calculate the size at runtime or dereference a variable in memory containing the size/limit. 2. Absoulte symbols that were relocated to a fixed address. These absolute symbols are generated by assembly files to be placed at a fixed location. Again, these symbols are problematic because one can't distinguish a symbol that can't be relocated. The symbols are again resolved at runtime to allow for proper relocation. For the symbols defining a size either use 2 symbols and calculate the difference or provide a variable in memory containing the size. Change-Id: I1ef2bfe6fd531308218bcaac5dcccabf8edf932c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2789 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2013-03-20x86: don't clear bss in ramstage entryAaron Durbin
The cbfs stage loading routine already zeros out the full memory region that a stage will be loaded. Therefore, it is unnecessary to to clear the bss again after once ramstage starts. Change-Id: Icc7021329dbf59bef948a41606f56746f21b507f Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2865 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-19x86: remove stack definition in linker scriptAaron Durbin
In order to prepare the ramstage to be linked by the rmodule linker the stack needs to be self-contained within the ramstage objects. The reasoning is that the rmodule linker provides a way to define a heap, but it doesn't currently have a region for the stack. The downside to this is that memory footprint of the ramstage can change when compared before this change. The size difference stems from the link ordering of the objects as the stack is now defined within c_start.S. The size fluctuation ranges from 0 to CONFIG_STACK_SIZE - 1 because of the previous behavior or aligning to CONFIG_STACK_SIZE. It should be noted that such an alignment is unnecessary for 32-bit x86 as the alignment requirement for the stacks are 4 byte alignment. Also the memory footprint is still dominated by CONFIG_RAMTOP and CONFIG_RAMBASE. Change-Id: I63a4ddd249104bc27aff2ab6b39fc6db12b54028 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/2785 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2013-03-01GPLv2 notice: Unify all files to just use one space in »MA 02110-1301«Paul Menzel
In the file `COPYING` in the coreboot repository and upstream [1] just one space is used. The following command was used to convert all files. $ git grep -l 'MA 02' | xargs sed -i 's/MA 02/MA 02/' [1] http://www.gnu.org/licenses/gpl-2.0.txt Change-Id: Ic956dab2820a9e2ccb7841cab66966ba168f305f Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2490 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2013-02-27IOAPIC: Divide setup_ioapic() in two parts.Kyösti Mälkki
Currently some southbridge codes implement the set_ioapic_id() part locally and do not implement the load_vectors() part at all. This change allows clean-up of those southbridges without introducing changed behaviour. Change-Id: Ic5e860b9b669ecd1e9ddac4bbb92d80bdb9c2fca Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/300 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-08console: Only print romstage messages with EARLY_CONSOLE enabled.Hung-Te Lin
Revise console source file dependency (especially for EARLY_CONSOLE) and interpret printk/console_init according to EARLY_CONSOLE setting (no-ops if EARLY_CONSOLE is not defined). Verified to boot on x86/qemu and armv7/snow. Disabling EARLY_CONSOLE correctly stops romstage messages on x86/qemu (armv7/snow needs more changes to work). Change-Id: Idbbd3a26bc1135c9d3ae282aad486961fb60e0ea Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2300 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: David Hendricks <dhendrix@chromium.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>
2013-01-27ioapic: Factor out counting code to `ioapic_interrupt_count`Patrick Georgi
No need to keep duplicate variants of counting ioapic interrupts. Change-Id: I512860297309c46e05cc5379bf61479878817b1e Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/2185 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-01-23clear_ioapic: Fix reading of number of interrupts for IO-APICsAladyshev Konstantin
Apply the same fix for `setup_ioapic` as done in the following commit. commit 23c046b6f16805ff0131460189967bf261d704de Author: Nico Huber <nico.huber@secunet.com> Date: Mon Sep 24 10:48:43 2012 +0200 Fix reading of number of interrupts for IO-APICs The number read from the io-apic register represents the index of the highest interrupt redirection entry, i.e. the number of interrupts minus one. Change-Id: I54c992e4ff400de24bb9fef5d82251078f92c588 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1624 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Change-Id: I7b730d016a514c95c3b32aee6f31bd3d7b2c08cb Signed-off-by: Aladyshev Konstantin <aladyshev@nicevt.ru> Reviewed-on: http://review.coreboot.org/2043 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-12-06Unify assembler function handlingStefan Reinauer
Instead of adding regparm(0) to each assembler function called by coreboot, add an asmlinkage macro (like the Linux kernel does) that can be different per architecture (and that is empty on ARM right now) Change-Id: I7ad10c463f6c552f1201f77ae24ed354ac48e2d9 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1973 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-27build system: Eliminate special case for c_startPatrick Georgi
c_start.o has a special case in the build system, which we can eliminate, somewhat simplifying the build. To ensure that the entry point is at the beginning, introduce a new section .textfirst that is placed appropriately. In principle the ENTRY() definition in the linker script should be enough, but better be safe. Change-Id: I9737f7f5731e12ceb2119eb432b0e09832bc53fa Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/1909 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-20Unify use of bool config variablesStefan Reinauer
e.g. -#if CONFIG_LOGICAL_CPUS == 1 +#if CONFIG_LOGICAL_CPUS This will make it easier to switch over to use the config_enabled() macro later on. Change-Id: I0bcf223669318a7b1105534087c7675a74c1dd8a Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1874 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-11-14Provide MRC with a console printing callback functionVadim Bendebury
Let memory initialization code use the coreboot romstage console. This simplifies the code and makes sure that all output is available in /sys/firmware/log. The pei_data structure is modified to allow passing the console output function pointer. Romstage console_tx_byte() is used for this purpose. Change-Id: I722cfcb9ff0cf527c12cb6cac09d77ef17b588e0 Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/1823 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-13Pass the CPU index as a parameter to startup.Ronald G. Minnich
This addition is in support of future multicore support in coreboot. It also will allow us to remove some asssembly code. The CPU "index" -- i.e., its order in the sequence in which cores are brought up, NOT its APIC id -- is passed into the secondary start. We modify the function to specify regparm(0). We also take this opportunity to do some cleanup: indexes become unsigned ints, not unsigned longs, for example. Build and boot on a multicore system, with pcserial enabled. Capture the output. Observe that the messages Initializing CPU #0 Initializing CPU #1 Initializing CPU #2 Initializing CPU #3 appear exactly as they do prior to this change. Change-Id: I5854d8d957c414f75fdd63fb017d2249330f955d Signed-off-by: Ronald G. Minnich <rminnich@chromium.org> Reviewed-on: http://review.coreboot.org/1820 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2012-11-12mmio pci config: Remove register constraintsAaron Durbin
The currently encoded register constraints fails compilation for SMM code or any code that compiles with -fPIC. The reason is that the ebx register is used for GOT base register. I don't believe the comment eluding to register constraints for AMD processors still applies. Therefore remove mmio_conf.h, and use the mmio methods in io.h. Change-Id: I391e5c2088ebc760b3a6ed6c37b65bbecab40a5c Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/1801 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-08x86 memcpy: Copy 4 bytes at onceStefan Reinauer
This is a slight improvement over the rep movsb loop Change-Id: Id71d9bfe5330b154a5c62fac85ce3955ae89b057 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/1742 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-10-29Fix reading of number of interrupts for IO-APICsNico Huber
The number read from the io-apic register represents the index of the highest interrupt redirection entry, i.e. the number of interrupts minus one. Change-Id: I54c992e4ff400de24bb9fef5d82251078f92c588 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1624 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-08-15coreboot: Dump memory around problem area when encountering exceptionAlexandru Gagniuc
When we encounter an x86 exception, we print the problem address, dump the registers and die. This may not be sufficient information for debug. Also dump the memory around the problem instruction. This has proven useful in identifying memory issues, and DRAM burst reordering problems. Change-Id: I6411344e89f946e16d11217d7dbd73812c45d54c Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/1454 Tested-by: build bot (Jenkins) Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
2012-07-31Revert "Use broadcast SIPI to startup siblings"Sven Schnelle
This reverts commit 042c1461fb777e583e5de48edf9326e47ee5595f. It turned out that sending IPIs via broadcast doesn't work on Sandybridge. We tried to come up with a solution, but didn't found any so far. So revert the code for now until we have a working solution. Change-Id: I7dd1cba5a4c1e4b0af366b20e8263b1f6f4b9714 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/1381 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-07-26USBDEBUG: buffer up to 8 bytesSven Schnelle
EHCI debug allows to send message with 8 bytes length, but we're only sending one byte in each transaction. Buffer up to 8 bytes to speed up debug output. Change-Id: I9dbb406833c4966c3afbd610e1b13a8fa3d62f39 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/1357 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber <nico.huber@secunet.com>
2012-07-15Poison the stack to uncover programming errorsRonald G. Minnich
Code can easily make the mistake of using uninitialized values or, in assembly, mistakenly dereferencing stack pointers when an address is desired. Set the stack to a non-zero value which is also (by testing) a pointer which will crash coreboot if used. This poisoning has uncovered at least one bug. Change-Id: I4affb9a14b96611e8bf83cb82636e47913025a5d Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/1221 Reviewed-by: Marc Jones <marcj303@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: Sven Schnelle <svens@stackframe.org>
2012-07-10Fix APIC cpu_indexKyösti Mälkki
If a CPU was pre-allocated, cpu_path is not copied and thus index would not be updated. This breaks cpu_index() and AMD model_fxx is possibly broken without this patch. Change-Id: I77483181cf0bca31423c655942c022bffab3c7ea Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1199 Tested-by: build bot (Jenkins) Reviewed-by: Sven Schnelle <svens@stackframe.org>
2012-07-10Drop start_cpu_lockKyösti Mälkki
Function alloc_find_dev() is serialized. Change-Id: I40d27d1adca629f1f7ce2f09c1cb2fd04b76eb9a Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/1198 Tested-by: build bot (Jenkins) Reviewed-by: Sven Schnelle <svens@stackframe.org>
2012-07-05PCI Type2 config must dieRonald G. Minnich
PCI Type 2 config was a strange and never-used config mechanism. It is unlikely that in the 13 years of coreboot's existence that type 2 was ever used; it just made life complicated for everyone. It lived long enough in coreboot to be replaced by mmioconf. Prior to making the device tree visible in romstage we want to get rid of type2. Delete two files we don't need any more (yay!). Replace two functions with one: pci_config_default, which returns a pointer to the default config method. At some future time this may change to mmio but for now it is old type1 style. Change-Id: Icc4ccf379a89bfca8be43f305b68ab45d88bf0ab Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/1159 Tested-by: build bot (Jenkins) Reviewed-by: Sven Schnelle <svens@stackframe.org>
2012-07-02Use broadcast SIPI to startup siblingsSven Schnelle
The current code for initializing AP cpus has several shortcomings: - it assumes APIC IDs are sequential - it uses only the BSP for determining the AP count, which is bad if there's more than one physical CPU, and CPUs are of different type Note that the new code call cpu->ops->init() in parallel, and therefore some CPU code needs to be changed to address that. One example are old Intel HT enabled CPUs which can't do microcode update in parallel. Change-Id: Ic48a1ebab6a7c52aa76765f497268af09fa38c25 Signed-off-by: Sven Schnelle <svens@stackframe.org> Reviewed-on: http://review.coreboot.org/1139 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-06-23Add an option for Waiting for gdb connection if the gdb stub configuration ↵Denis 'GNUtoo' Carikli
is chosen. Here's a quick demonstration on how to use it(tested on M4A785T-M). (gdb) file ./build/cbfs/fallback/coreboot_ram.debug Reading symbols from [...]/build/cbfs/fallback/coreboot_ram.debug...done. (gdb) set remotebaud 115200 (gdb) target remote /dev/ttyUSB0 Remote debugging using /dev/ttyUSB0 _text () at src/arch/x86/lib/c_start.S:85 85 call hardwaremain Change-Id: Ia49cbecc41deb061433bc39f5b81715da49edc98 Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org> Reviewed-on: http://review.coreboot.org/1134 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-06-21Don't use 64-bit constant 0x100000000 in linker scriptsNico Huber
The constant value 0x100000000 is used in linker scripts to calculate offsets from the end of 32-bit-addressed memory. There is nothing wrong with it, but 32-bit versions of ld do the calculation wrong. Change-Id: I4e27c6fd0c864b4d98f686588bf78c7aa48bcba8 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/1129 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2012-05-08Clean up #ifsPatrick Georgi
Replace #if CONFIG_FOO==1 with #if CONFIG_FOO: find src -name \*.[ch] -exec sed -i "s,#if[[:space:]]*\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]*1[[:space:]]*\$,#if \1," {} + Replace #if (CONFIG_FOO==1) with #if CONFIG_FOO: find src -name \*.[ch] -exec sed -i "s,#if[[:space:]]*(\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]*1)[[:space:]]*\$,#if \1," {} + Replace #if CONFIG_FOO==0 with #if !CONFIG_FOO: find src -name \*.[ch] -exec sed -i "s,#if[[:space:]]*\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]*0[[:space:]]*\$,#if \!\1," {} + Replace #if (CONFIG_FOO==0) with #if !CONFIG_FOO: find src -name \*.[ch] -exec sed -i "s,#if[[:space:]]*(\(CONFIG_[A-Z0-9_]*\)[[:space:]]*==[[:space:]]*0)[[:space:]]*\$,#if \!\1," {} + (and some manual changes to fix false positives) Change-Id: Iac6ca7605a5f99885258cf1a9a2473a92de27c42 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/1004 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Martin Roth <martin@se-eng.com>
2012-04-23Unbreak boards where chipset can select between FSB and serial APIC busRudolf Marek
Commit d4d5e4d3e10da06a83d57a147bd58a733381de18 contains #ifdef instead of #if, making the FSB/serial bus selection for APIC always select serial bus. The bug is harmless on most chipsets because the bit is often RO, but it breaks at least on VIA K8T890. Change-Id: I89c4855922199eca7f921c3e4eb500656544c8e5 Signed-off-by: Rudolf Marek <r.marek@assembler.cz> Reviewed-on: http://review.coreboot.org/921 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2012-04-06Factor out function to find driver for a CPUStefan Reinauer
This function can be used outside of the normal CPU setup Change-Id: I810c63b8aff868a6f69d5b992bea1cfae5a5996b Signed-off-by: Duncan Laurie <dlaurie@google.com> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/868 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-04-04Use fast memset in SMM mode, tooStefan Reinauer
... and always include IP checksumming in romstage. It's generally useful and our upcoming port needs it. Change-Id: I248402d96a23e58354744e053b9d5cca6b74ad3a Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/827 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-03-31Fix issues with x86 memcpyMathias Krause
The x86 memcpy() implementation did not mention its implicit output registers ESI, EDI and ECX which might make this code miscompile when the compiler uses the value of EDI for the return value *after* the 'rep movsb' has completed. That would break the API of memcpy as this would return 'dst+len' instead of 'dst'. Fix this possible bug by removing the wrong comment and listing all output registers as such (using dummy stack variables that get optimized away). Also the leading 'cld' is superflous as the ABI mandates the direction flag to be cleared all the time when we're in C (see <http://gcc.gnu.org/gcc-4.3/changes.html>) and we have no ASM call sites that might require it to be cleared explicitly (SMM might come to mind, but it clears the DF itself before passing control to the C part of the SMI handler). Last but not least fix the prototype to match the one from <string.h>. Change-Id: I106422d41180c4ed876078cabb26b45e49f3fa93 Signed-off-by: Mathias Krause <minipli@googlemail.com> Reviewed-on: http://review.coreboot.org/836 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
2012-03-30Don't re-init EBDA in S3 resume path.Duncan Laurie
I forgot to implement this the first time around. It does not seem to cause noticeable problems but in heavy suspend/resume testing I saw a suspicious crash in the kernel when trying to bring one of the CPUs back online. Change-Id: I950ac260f251e2683693d9bd20a0dd5e041aa26e Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: http://review.coreboot.org/770 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-03-30Prepare the BIOS data areas before device init.Duncan Laurie
Since we do not run option roms in normal mode nothing was initializing the BDA/EBDA and yet Linux depends very much on it having sane values here. For the most part the kernel tries to work around this not being initialized, but every once in awhile (1/300 boots or so) it would end up reading something that looked sane from BDA but was not and then it would panic. In this change the EBDA is unconditionally setup before devices are initialized. I'm not set on the location in dev_initialize() but there does not seem to be another place to hook it in so that it runs just once for ALL platforms regardless of whether they use option roms or not. (possibly hardwaremain?) The EBDA setup code has been moved into its own location in arch/x86/lib/ebda.c so it can be compiled in even if the option rom code is not. The low memory size is still set to 1MB which is enough to make linux happy without having to hook into each mainboard to get a more appropriate value. The setup_ebda() function takes inputs so it could be changed for a mainboard if needed. OLD/BROKEN would read garbage. Examples from different boots: ebda_addr=0x75e80 lowmem=0x1553400 ebda_addr=0x5e080 lowmem=0x3e51400 ebda_addr=0x7aa80 lowmem=0x2f8a800 NEW/FIXED now reads consistent values: ebda_addr=0xf6000 lowmem=0x100000 Change-Id: I6cb79f0e3e43cc65f7e5fe98b6cad1a557ccd949 Signed-off-by: Duncan Laurie <dlaurie@google.com> Reviewed-on: http://review.coreboot.org/769 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>