summaryrefslogtreecommitdiff
path: root/src/mainboard/emulation/qemu-armv7
AgeCommit message (Collapse)Author
2015-04-14CBFS: Automate ROM image layout and remove hardcoded offsetsJulius Werner
Non-x86 boards currently need to hardcode the position of their CBFS master header in a Kconfig. This is very brittle because it is usually put in between the bootblock and the first CBFS entry, without any checks to guarantee that it won't overlap either of those. It is not fun to debug random failures that move and disappear with tiny alignment changes because someone decided to write "ORBC1112" over some part of your data section (in a way that is not visible in the symbolized .elf binaries, only in the final image). This patch seeks to prevent those issues and reduce the need for manual configuration by making the image layout a completely automated part of cbfstool. Since automated placement of the CBFS header means we can no longer hardcode its position into coreboot, this patch takes the existing x86 solution of placing a pointer to the header at the very end of the CBFS-managed section of the ROM and generalizes it to all architectures. This is now even possible with the read-only/read-write split in ChromeOS, since coreboot knows how large that section is from the CBFS_SIZE Kconfig (which is by default equal to ROM_SIZE, but can be changed on systems that place other data next to coreboot/CBFS in ROM). Also adds a feature to cbfstool that makes the -B (bootblock file name) argument on image creation optional, since we have recently found valid use cases for CBFS images that are not the first boot medium of the device (instead opened by an earlier bootloader that can already interpret CBFS) and therefore don't really need a bootblock. BRANCH=None BUG=None TEST=Built and booted on Veyron_Pinky, Nyan_Blaze and Falco. Change-Id: Ib715bb8db258e602991b34f994750a2d3e2d5adf Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: e9879c0fbd57f105254c54bacb3e592acdcad35c Original-Change-Id: Ifcc755326832755cfbccd6f0a12104cba28a20af Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/229975 Reviewed-on: http://review.coreboot.org/9620 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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>
2015-03-20romstages: use common run_ramstage()Aaron Durbin
Instead of sprinkling the cbfs calls around (as well as getting return values incorrect) use the common run_ramstage() to perform the necessary work to load and run ramstage. Change-Id: I37b1e94be36ef7a43efe65b2db110742fa105169 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/8710 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-27CBMEM: Always use DYNAMIC_CBMEMKyösti Mälkki
Drop the implementation of statically allocated high memory region for CBMEM. There is no longer the need to explicitly select DYNAMIC_CBMEM, it is the only remaining choice. Change-Id: Iadf6f27a134e05daa1038646d0b4e0b8f9f0587a Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/7851 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@google.com>
2015-01-03ARMv7: Always has DYNAMIC_CBMEMKyösti Mälkki
The static allocator only worked for x86 anyway. Change-Id: I0d2b63465620512e62334d7aa0c885fc5ab3e589 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/8030 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-12-19qemu-armv7: Trivial style fixesDavid Hendricks
Minor style fixes to avoid future bikeshedding. - Opening brace for functions go on their own lines. - use fixed-length types where appropriate. BUG=none BRANCH=none TEST=it compiles Signed-off-by: David Hendricks <dhendrix@chromium.org> Original-Change-Id: If9855d32c8ed1f5977937806c8c4cce65dd7d450 Original-Reviewed-on: https://chromium-review.googlesource.com/196955 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Commit-Queue: David Hendricks <dhendrix@chromium.org> Original-Tested-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org> (cherry picked from commit e2bfeed18636af6b532e2e8f118de22a658fe41b) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Conflicts: src/mainboard/emulation/qemu-armv7/uart.c Change-Id: I8e09db53534802262168e65ec4cd47b96386490a Reviewed-on: http://review.coreboot.org/7867 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-11-13qemu-armv7: Minimal changes to pass compiling qemu-v7 platform.Hung-Te Lin
The ARM configuration files have been changed that we need more settings to run Coreboot on qemu-v7. Also fixed the incorrect Makefile settings that caused armv7 to try building with armv8 cache. BRANCH=none BUG=none TEST=make menuconfig # select qemu-armv7 make # pass qemu... # successfully boots to ramstage. Original-Change-Id: I4040e86ad1ff6e8ebd07cfe387c3f5a0e8941800 Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/186080 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Tested-by: Hung-Te Lin <hungte@google.com> (cherry picked from commit f2fab7383ee5352dab2d5f2b8a7d2d321d5944bc) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Ibe18a1a87f036df148393f8dfc6a6d92dba4ac5c Reviewed-on: http://review.coreboot.org/7421 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2014-10-16qemu-armv7: 32/64Ronald G. Minnich
This really is not critical but we might as well get it right. Change-Id: Ifec1e8dc35d7f5bb89d9a7a877d82410c83a3288 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/7070 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins)
2014-08-14ARMv7/Exynos: Fix memory location assumptionsStefan Reinauer
This patch cleans out a lot of unused variables in the ARM Kconfig files and introduces CONFIG_RAMSTAGE_BASE which is similar to CONFIG_RAMBASE on x86. This gets rid of the hard coded assumption that on ARM coreboot is always executed at the lowest DRAM address. But in fact, this might not be true because we might want coreboot to live at the end of RAM, or in SRAM Change-Id: I03e992645f9eb730e39a521aa21f702959311f74 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: https://chromium-review.googlesource.com/168645 Reviewed-by: David Hendrix <dhendrix@chromium.org> Tested-by: David Hendrix <dhendrix@chromium.org> (cherry picked from commit 15b87892eb2d5e27759c49dc6c8c7e626f651d77) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6634 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-08-08qemu-armv7/media.c: fix coding styleStefan Reinauer
Change-Id: I01a11923fc1b250afeed36acc20793fd072421ba Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: https://chromium-review.googlesource.com/168574 Reviewed-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 46b5f64096c55d0d9627cb9537fc4910e1bddcd9) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6520 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-07-08mainboard: Trivial - drop trailing blank lines at EOFEdward O'Callaghan
Change-Id: I05d6d22664155ac8478e665733f816776e277c22 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/6200 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2014-05-03Move ARCH_* from board/Kconfig to cpu or soc Kconfig.Furquan Shaikh
CONFIG_ARCH is a property of the cpu or soc rather than a property of the board. Hence, move ARCH_* from every single board to respective cpu or soc Kconfigs. Also update abuild to ignore ARCH_ from mainboards. Change-Id: I6ec1206de5a20601c32d001a384a47f46e6ce479 Signed-off-by: Furquan Shaikh <furquan@google.com> Reviewed-on: http://review.coreboot.org/5570 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2014-05-02qemu-armv7: Kconfig cleanupKyösti Mälkki
RAMBASE, RAMTOP and XIP_ROM_SIZE are not used with ARCH_ARMV7. Change-Id: I072ed022e3279ed23716fdf78d0db8952b3fdb32 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5627 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
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>
2014-04-26Rename 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>
2014-04-09uart: 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>
2014-03-04pl011 UART: Move under drivers/uartKyösti Mälkki
Currently this is only a minimal stub to get console on qemu-armv7. Change-Id: I3f20b7f944bc7d0e5ace9d22198d4c16a3839d2c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5162 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-01-22emulation/qemu-armv7: Fix wrong stack parameters.Vladimir Serbinenko
Now it boots up to message "Could not find payload". Change-Id: I07ddca7046492f7e0dec15a8ea00c2870b09ee67 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/4754 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-01-19boardstatus: Add category "emulation".Vladimir Serbinenko
Change-Id: If9d26b9e4cb1895452316c9cf2e8c75a01cfd7c2 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/4738 Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Tested-by: build bot (Jenkins)
2014-01-19board-status: Add board_info.txt manually for irregular wiki entriesVladimir Serbinenko
Based on info from wiki. Change-Id: Iebd799abe48550c4df55632b8177d845df7d9a7d Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/4706 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2013-12-20armv7: Remove SYS_TEXT_BASE config.Hung-Te Lin
SYS_TEXT_BASE is not used by any one. To prevent confusion when changing memory layout, remove it from current configurations. Change-Id: I15012b864bbb9c12003843b9b24ea64c91f4578b Reviewed-on: https://gerrit.chromium.org/gerrit/61853 Reviewed-by: David Hendricks <dhendrix@chromium.org> Commit-Queue: Hung-Te Lin <hungte@chromium.org> Tested-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/4371 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2013-12-03qemu-armv7: Drop additional console_init()Stefan Reinauer
It's done in bootblock_simple.c just after returning from the mainboard specific bootblock function. Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I96cab5e406132a9f7dc30d48ff99f524773a1a14 Reviewed-on: https://gerrit.chromium.org/gerrit/58473 Reviewed-by: Stefan Reinauer <reinauer@chromium.org> Tested-by: Stefan Reinauer <reinauer@chromium.org> Commit-Queue: Stefan Reinauer <reinauer@chromium.org> Reviewed-on: http://review.coreboot.org/4257 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-07-10Simplify early / bootblock console codeStefan Reinauer
Change-Id: I6b28bb95c7decbe3eed33b5b5a029bee48bbe403 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3691 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10ARM: Separate the early console (romstage) from the bootblock console.Gabe Black
It might be that you want an early console in romstage before RAM is up, but you can't or don't want to support the console all the way back in the bootblock. By making the console in those two different environments configurable seperately that becomes possible. On the 5250 console output as early as the bootblock works, but on the 5420 it only starts working in the ROM stage after clocks have been initialized. Change-Id: I68ae3fcb4d828fa8a328a30001c23c81a4423bb8 Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3671 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10armv7: Reserve space BL1 and checksum header by specifying bootblock offset.Hung-Te Lin
Not all ARM systems need "BL1", and the layout of BL* and bootblock may be different (ex, Exynos 5250 may use a new BL1 with variable length checksum header). To support that better, define the real base address (and ROM offset) of boot block, and then we can post-processing ROM image file by filling data / checksum and any other information. Change-Id: I0e3105e52500b6b457371ad33a9aa546acf28928 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3664 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-07-10ARMv7: De-uboot-ify Exynos5250 codeStefan Reinauer
When starting the Exynos5250 port, a lot of unneeded u-boot code was imported. This is an attempt to get rid of a lot of unneeded code before the port is used as a basis for further ARM ports. There is a lot more that can be done, including cleaning up the 5250's Kconfig file. Change-Id: I2d88676c436eea4b21bcb62f40018af9fabb3016 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3642 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>
2013-07-10ARMv7: normalize ramstage code flowStefan Reinauer
In ram stage, all code flow should be tied to the resource allocator. Stuff that has to happen before everything else goes into the mainboard enable function in mainboard.c. This patch empties the main() wrapper around hardwaremain.c, allowing to get rid of this special case in the ARM port. Change-Id: Ide91a23f1043b64acf64471f180a2297f0f40d97 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/3638 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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)
2013-02-28Drop SRC_ROOT from mainboard Makefile.incsStefan Reinauer
It's not used, and not needed. Change-Id: Ifca92f3606ac58fc26e09676488c3add5d84ae79 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2548 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-02-25mainboard.c: Name enable_dev function uniformly `mainboard_enable`Paul Menzel
To reduce the differences between these file name the enabling device function in the directory `src/mainboard` uniformly `mainboard_enable` [1]. Thanks to the awesome help of gnomon and BlastHardcheese in the IRC channel #sed on <irc.freenode.net>. gnomon came up with the following command to do the actual work. $ cd src/mainboard $ for f in */*/mainboard.c ; \ > do src="$(awk '/\.enable_dev = /{v=$NF; sub(/,$/,"",v); print v}' "$f")" ; \ > [[ -z $src ]] && continue ; \ > printf '%s\n' "g/${src}/s/${src}\([,(]\)/mainboard_enable\1/p" w | ed -s "$f" ; \ > done `src/mainboard/digitallogic/msm586seg/mainboard.c` and `src/mainboard/technologic/ts5300/mainboard.c` had to be adapted manually as no comma was used separating the struct members. And with the following statement, gnomon is even more likable! My pleasure entirely. Good luck with coreboot; I'm a big fan of the project. [1] http://www.coreboot.org/pipermail/coreboot/2013-February/074548.html Change-Id: Ife9cd0c2d9cc1ed14afc6d40063450553f06a6c6 Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2493 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-21ARMV7: create a correct LB_SERIAL table entryRonald G. Minnich
If CONFIG_CONSOLE_SERIAL is set, and we can call the standard function and get a non-zero uart address, then we create an lb table entry. The code was mostly right, just needed a tweak. Change-Id: I5b36c7b4e580a23319b7ba92cc8ad61592b1757a Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2466 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-12armv7: Add emulation/qemu-armv7 board.Hung-Te Lin
To simplify testing ARM implementation, we need a QEMU configuration for ARM. The qemu-armv7 provides serial output, CBFS simulation, and full boot path (bootblock, romstage, ramstage) to verify the boot loader functionality. To run with QEMU: export QEMU_AUDIO_DRV=none qemu-system-arm -M vexpress-a9 -m 1024M -nographic -kernel build/coreboot.rom Verified to boot until ramstage loaded successfully by QEMU v1.0.50. Change-Id: I1f23ffaf408199811a0756236821c7e0f2a85004 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2354 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>