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2013-02-25ARMv7: Simplify div64Stefan Reinauer
We don't need the overly complex optimized version, since we're only doing this in very few non-critical places. Also, add the div* files to the bootblock, they're needed if we do printk. Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I83bd766d4b03b488326ade1c13b7c364a7119e7b Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2508 Tested-by: build bot (Jenkins)
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>
2013-02-20Whitespace: Replace tab character in license text with two spacesPaul Menzel
For whatever reason tabs got inserted in the license header text. Remove one occurrence of that with the following command [1]. $ git grep -l 'MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.'$'\t' | xargs sed -i 's,MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.[ ]*,MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\ \ ,' [1] http://sed.sourceforge.net/grabbag/tutorials/sedfaq.txt Change-Id: Iaf4ed32c32600c3b23c08f8754815b959b304882 Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2460 Tested-by: build bot (Jenkins) Reviewed-by: Jens Rottmann <JRottmann@LiPPERTembedded.de> Reviewed-by: Cristian Măgherușan-Stanciu <cristi.magherusan@gmail.com>
2013-02-20ARMV7: minor tweaks to inter-stage calling and payload handling.Ronald G. Minnich
Payloads, by design, can return. There's lots of mechanism in the payload code to support it, and the chooser payload relies on it. Hence, we should not mark the function call in exit_stage as noreturn. Not all ARM have unified caches, and it's not always easy to tell what to do. So we are very paranoid. Before we call between stages, we should carefully flush the dcache to memory and invalidate the icache. This may be more than is necessary on all architectures but it doesn't really hurt for the most part. So compile cache management code into all stages, and call the flush dcache/invalidate icache from all stages. Change-Id: Ib9cc625c4dfd2d7d4b3c69a74686cc655a9d6484 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2462 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-19armv7/snow: add CPU and RAM resources via allocatorDavid Hendricks
This adds necessary device operations to add CPU and RAM resources. Change-Id: Ief8f66627ef37f4fa786bfc3f7899529d3e5b037 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2419 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-19armv7: init stack to 0xdeadbeef to detect stack overflowsDavid Hendricks
This adds a simple loop which initializes the stack to 0xdeadbeef which is used by checkstack(). Change-Id: I8aecf7bfb1067de68c4080c1fcb7eefa28fd04a7 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2421 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-02-16armv7/exynos5250: fix usage of _stack and _estackDavid Hendricks
This patch fixes up the usage of stack pointer and regions. The current approach only works by coincidence, so this fixes a few things at once to get it into a working state and allow us to use checkstack() again: - Add a STACK_SIZE Kconfig variable. Earlier on it was evaluated to 0. - Assign _stack and _estack using CPU-specific Kconfig variables since it may reside elsewhere in memory (not necessarily DRAM). - Make the existing IRAM stack variables more useful in this context. Change-Id: I4ca5b5680c9ea7e26b1b2b6b3890e028188b51c2 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2416 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-15ARMv7: Drop u-boot type remainsStefan Reinauer
Just a mechanical cleanup. Change-Id: I0815625e629ab0b7ae6c948144085f1bd8cabfb5 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2408 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-15ARMv7: straighten out reset codeStefan Reinauer
We don't need three different implementations. Change-Id: Ie7b5fa90794676ea38838454a33e8e9188428eb7 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2406 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-15ARMv7: Drop sr32, and wait_on_valueStefan Reinauer
They're unused. Also drop some unused defines in system.h Change-Id: Ia5afc3a676a4a94787041430f05d08f333033c73 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2404 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
2013-02-15ARMv7: Fix include file names in memset & memcpyStefan Reinauer
We don't have asm/ Change-Id: I7f80f47e9d7f457b7a5a64603c59b14d3b536a8c Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2403 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-15ARMv7: Drop more unused filesStefan Reinauer
Change-Id: I0dd83f96d2a9598e9677d1b0b114229de6724287 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2401 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-14ARMv7: drop multiboot supportStefan Reinauer
Multiboot is an x86 only thing. Drop support on ARM. Change-Id: I13fafa464a794206d5450b4a1f23a187967a8338 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2392 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-14ARMv7: Drop SKIP_LOWLEVEL_INITStefan Reinauer
It's not used. Change-Id: I713d60209815f0aad93f5d4d3afef9f825db427e Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2393 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
2013-02-14armv7: don't write a forward entry in coreboot tablesDavid Hendricks
We don't seem to need it, and it currently confuses the payload. (credit to Gabe Black for this, I'm just uploading it) Change-Id: I4e3a60eceb9b24e3bc8e50db431c1a731d1cdbae Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/2385 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-13armv7/exynos: remove some stale files leftover from initial importDavid Hendricks
This removes some files leftover from the initial port. Some are leftover from U-Boot and some were leftover from the skeleton code derived from x86. There's a bit more that we'll get in another sweep. Change-Id: I325793ecb902b3b9430dcf531714ce025d201de6 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2380 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-13armv7: use start and size parameters in mmu_setup()David Hendricks
mmu_setup() was originally written in U-Boot to utilize board-specific global data. Since we're trying to avoid that, we added start and size parameters so that board-specific info can be passed in via mainboard code. Let's start using it that way. Change-Id: I7d7de0e42bd918c9f9f0c177acaf56c110bf8353 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2378 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-12armv7: stages.c: Fix grammar: s,The is to,This is to,Paul Menzel
The comment introduced in commit 50c0a50ac6a3fa54ed1286e8b76f933701b6d053 Author: David Hendricks <dhendrix@chromium.org> Date: Thu Jan 31 17:05:50 2013 -0800 armv7: unify stage hand-off routines Reviewed-on: http://review.coreboot.org/2254 contained a typo, which is corrected now. Change-Id: I87f7cfa82fcd12b6961d3329e634b4c201cc047e Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-on: http://review.coreboot.org/2372 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-12armv7: jump to ELF image using stage_exit()David Hendricks
This is just to get us to the payload. TODO: Do we want to implement any of the stuff from the x86 version, such as copying coreboot to a new location? Change-Id: Ia0544f111d7a1189ebd92d0ba3e11448eabd6252 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2363 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-11armv7/exynos5250/snow: deprecate CONFIG_{RAMBASE,RAMTOP}David Hendricks
RAMBASE and RAMTOP are leftovers from the x86 port and do not apply the same way on ARM platforms. On x86 they refer to the low memory region where coreboot tables reside. However on ARM we don't have such a region which is architecturally defined. So instead we'll use the CPU-defined DRAM base address and the mainboard-defined DRAM size. This also has the pleasant side-effect of fixing the coreboot tables to not clobber ramstage code... Change-Id: I5548ecf05e82f9d9ecec8548fabdd99cc1e39c3b Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2351 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-10armv7/exynos5250: place .id between .start and bootblock mainDavid Hendricks
This places the .id section toward the lower region of the coreboot image, before the bootblock. It's easier for humans to find by dumping the image and it also eliminates ID_SECTION_OFFSET which is currently the upper bound on our image size. Change-Id: I7d737b901dac659ddf9aa437cee5dc32f1080546 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2345 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-10armv7: make bootblock linker script more explicitDavid Hendricks
This adds a .bl1 and .start symbol that is placed at the beginning of the .rom section. The goal is to move the .id section in between the reset vector and bootblock_main. Change-Id: Ie732ce656d697c059cc0fa40c844b39f53fc214c Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2344 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-09armv7/exynos: make BL1_SIZE_KB consistent with numbers used...David Hendricks
The Kconfig variable indicates KB, but the number used was bytes. Let's just assume KB is correct for now. Change-Id: I910c126104f0222fc48b70a18df943f2afddeca3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2341 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-09armv7: update coreboot tables for armv7David Hendricks
This is a first-pass attempt at cleaning up the coreboot tables for ARM. The most noticable difference is that there is no longer both a high and a low table. Change-Id: I5ba87ad57bf9a697b733511182c0326825071617 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2329 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-09armv7/snow: add BL1_SIZE_KB and get rid of magic constantsDavid Hendricks
This adds a BL1_SIZE_KB config variable so that we can get rid of some magic constants. Change-Id: I9dbcfb407d3f8e367be5d943e95b032ce88b0ad0 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2332 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-09armv7: include $(obj)/config.h when building bootblockDavid Hendricks
Explicitly including it allows us to get rid of some magic constants in the bootblock linker script. Change-Id: I095899babc997addce6b383f00e5ebf135e99d5e Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2331 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-08armv7: Use same console initialization procedure for all ARM stagesHung-Te Lin
Use same console initialization procedure for all ARM stages (bootblock, romstage, and ramstage): #include <console/console.h> ... console_init() ... printk(level, format, ...) Verified to boot on armv7/snow with console messages in all stages. Change-Id: Idd689219035e67450ea133838a2ca02f8d74557e Signed-off-by: Hung-Te Lin <hungte@chromium.org> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2301 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-08console: Revise serial console configuration names.Hung-Te Lin
The console drivers (especially serial drivers) in Kconfig were named in different styles. This change will rename configuration names to a better naming style. - EARLY_CONSOLE: Enable output in pre-ram stage. (Renamed from EARLY_SERIAL_CONSOLE because it also supports non-serial) - CONSOLE_SERIAL: Enable serial output console, from one of the serial drivers. (Renamed from SERIAL_CONSOLE because other non-serial drivers are named as CONSOLE_XXX like CONSOLE_CBMEM) - CONSOLE_SERIAL_UART: Device-specific UART driver. (Renamed from CONSOLE_SERIAL_NONSTANDARD_MEM because it may be not memory-mapped) - HAVE_UART_SPECIAL: A dependency for CONSOLE_SERIAL_UART. Verified to boot on x86/qemu and armv7/snow, and still seeing console messages in romstage for both platforms. Change-Id: I4bea3c8fea05bbb7d78df6bc22f82414ac66f973 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2299 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-07armv7: Clean up arm/snow bootblock build process.Hung-Te Lin
Remove duplicated / testing code and share more driver for bootblock, romstage and ramstage. The __PRE_RAM__ is now also defined in bootblock build stage, since bootblock is executed before RAM is initialized. Change-Id: I4f5469b1545631eee1cf9f2f5df93cbe3a58268b Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2282 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-06armv7: Clean up: remove deprecated SPL.Hung-Te Lin
"SPL" from U-Boot is deprecated by bootblock in coreboot/arm, so we don't need it anymore. Change-Id: Id16877075d0b870839a10160073ad70777a2af0a Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2297 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-06armv7: Clean up: replace hang() by hlt().Hung-Te Lin
hang() is the legacy function from U-boot and should be replaced by hlt() in coreboot. Change-Id: I0f390b1b6f9ff71487ea36cf16c462724b66d8ca Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2298 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-06armv7: Prevent CBFS data overlapping bootblock.Hung-Te Lin
For arm/snow, current bootblock is larger than previously assigned CBFS offset and will fail to boot. To prevent this happening again in future, cbfstool now checks if CBFS will overlap bootblock. A sample error message: E: Bootblock (0x0+0x71d4) overlap CBFS data (0x5000) E: Failed to create build/coreboot.pre1.tmp. arm/snow offset is also enlarged and moved to Kconfig variable. Change-Id: I4556aef27ff716556040312ae8ccb78078abc82d Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2295 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-05cbfstool: Use cbfs_image API for "create" command.Hung-Te Lin
Usage Changes: To support platforms with different memory layout, "create" takes two extra optional parameters: "-b": base address (or offset) for bootblock. When omitted, put bootblock in end of ROM (x86 style). "-H": header offset. When omitted, put header right before bootblock, and update a top-aligned virtual address reference in end of ROM. Example: (can be found in ARM MAkefile): cbfstool coreboot.rom create -m armv7 -s 4096K -B bootblock.bin \ -a 64 -b 0x0000 -H 0x2040 -o 0x5000 Verified to boot on ARM (Snow) and X86 (QEMU). Change-Id: Ida2a9e32f9a459787b577db5e6581550d9d7017b Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2214 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-04exynos/snow: partial clean-up of snow bootblock using build classDavid Hendricks
This removes some duplicate code from Snow's mainboard bootblock by utilizing the bootblock build class. Change-Id: I153247370a8c5127260082dcdca3ebdc5e104fb8 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2270 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-03armv7: Add 'bootblock' build class.Hung-Te Lin
For ARM platform, the bootblock may need more C source files to initialize UART / SPI for loading romstage. To preventing making complex and implicit dependency by using #include inside bootblock.c, we should add a new build class "bootblock". Also #ifdef __BOOT_BLOCK__ can be used to detect if the source is being compiled for boot block. For x86, the bootblock is limited to fewer assembly files so it's not using this class. (Some files shared by x86 and arm in top level or lib are also changed but nothing should be changed in x86 build process.) Change-Id: Ia81bccc366d2082397d133d9245f7ecb33b8bc8b Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2252 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-02-01armv7: Fix entry point in ram stage.Hung-Te Lin
Eliminate the warning message: ld: warning: cannot find entry symbol _start; defaulting to 040000000 The "_start" from c_start.S is deprecated so we need to define entry point again in link description file. Change-Id: I174428faa2e7f08cd91fe96a53e6efea9dc3634e Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2258 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-02-01clean-up for arch/armv7/Makefile.incDavid Hendricks
This removes a few lines which are obsolete or unneeded. We may want to do something with SMP eventually (can we use it for decompression?) but for now we'll assume non-bootstrap cores are idle until the OS does something with them. Change-Id: Iff6b196e008e803bcfd00e5de07cf471bd2357ea Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2257 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-02-01armv7: unify stage hand-off routinesDavid Hendricks
This replaces the current stage-specific exit/entry functions with generic versions. Now all stages compile with stage_entry(), which is placed at .text.stage_entry.armv7, and stage_exit(). Snow's ramstage files are also updated to avoid build breakage. Change-Id: I953a2c4b8121bd4b66c3362557997a9ca3aa53b0 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2254 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-01-30armv7: don't hang on divide by zeroRonald G. Minnich
People make mistakes. Hanging the box is not a good reason to kill the firmware, esp. since this is probably happening in a printk. The only issue with the recursive call to printk is that we may deadlock if we have locked something. But we can at least try. Hanging is certainly not what we want ... Change-Id: Ib3bc87bc395ae89e115cf6d042f4167856422ca1 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2233 Tested-by: build bot (Jenkins) Reviewed-by: Peter Stuge <peter@stuge.se>
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>
2013-01-29cbfstool: Change "locate" output to prefix "0x".Hung-Te Lin
Currently "cbfstool locate" outputs a hex number without "0x" prefix. This makes extra step (prefix 0x, and then generate another temp file) in build process, and may be a problem when we want to allow changing its output format (ex, using decimal). Adding the "0x" in cbfstool itself should be better. Change-Id: I639bb8f192a756883c9c4b2d11af6bc166c7811d Signed-off-by: Hung-Te Lin <hungte@chromium.org> Reviewed-on: http://review.coreboot.org/2201 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-01-29armv7: Clean up the mmu setup a bitRonald G. Minnich
The previous incarnation did not use all of mmu_setup, which meant we did not carefully disable things before (possibly) changing them. This code is tested and works, and it's a bit of a simplification. Change-Id: I0560f9b8e25f31cd90e34304d6ec987fc5c87699 Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2204 Reviewed-by: Peter Stuge <peter@stuge.se> Tested-by: build bot (Jenkins)
2013-01-29armv7: nuke global_data.h and remove some references to gd structDavid Hendricks
This begins to remove references to global data which u-boot used. There are still many commented out references to gd-> and bd-> which we'll fix once we're happy with the replacements. Change-Id: Ie1b40a997e28a118f8f3ad96a2f9a2462d32fbe3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2210 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-29armv7: Clean out weak symbols and unnecessary #ifdef's in cache filesDavid Hendricks
This just removes unused code. If for some reason we don't want to initialize cache, then the CPU or mainboard specific init routines don't need to call these. Change-Id: Ieb7393b6cbc103e490753da4ed27114156466ded Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2209 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-01-22armv7: add ARM-encoded bootblock_exit() stubDavid Hendricks
This replaces the call() function with a stub which is compiled separately using -marm. See http://review.coreboot.org/#/c/2175/ for details. Change-Id: I7f8c45b5e63ec97b0a82294488129d1c97ec0cbf Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2180 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-19armv7/snow: get to romstageDavid Hendricks
This patch does a few things to get us into romstage: - Add romstage as a stage (a later patch adds it as a binary, which is probably wrong). The Makefile magic is complex enough that we let it build the XIP file for now, but we no longer use it. - Replace findstage with loadstage. Loadstage will find a stage, load the code to memory, and zero the remaining part of memory. Now we can link the romstage to go anywhere! - Eliminate magic offsets from code/ldscripts and centralize Kconfig variables in src/cpu/samsung/exynos5250/Kconfig. - Tidy up code and serial output Change-Id: Iae4d2f9e7f429cb1df15d49daf9a08b88d75d79d Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2174 Tested-by: build bot (Jenkins)
2013-01-18armv7: add a wrapper for romstage's main() for ARM ISAGabe Black
This adds a wrapper around main() in romstage which is compiled using -marm. This assumes that the bootblock branches to romstage in ARM mode. The long-term idea is to enforce ABI compatibility when handing off to the next stage by using shims which are which are compiled in a pre- determiend manner and leave the main portions of each stage up to whatever the compiler wants. So it will eventually look like this: 1. bootblock_main (ARM/Thumb) 2. bootblock_exit (ARM) 3. romstage_entry (ARM) 4. romstage_main (ARM/Thumb) (credit to Gabe Black for writing the patch, I'm just uploading it) Change-Id: I4fdb8d2c6c2c0a7178bcb9154c378ddce0567309 Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Gabe Black <gabeblack@chromium.org> Reviewed-on: http://review.coreboot.org/2175 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-18Snow bootblock (bloated/debug version)David Hendricks
This is the bloated Snow bootblock which includes: - SPI driver - UART, including requisite I2C, Maxim PMIC, and clock config code. - Adjustments for magic offsets (id section, stack pointer address) This is just a temporary solution until we have romstage loading. Once that happens, we'll rip out all but the code necessary for copying SPI ROM content into SRAM. Change-Id: I2a11e272eb9b6f626b5d9783eabb4a720a1d06be Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2170 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-17Fix the stack setup code so we can use an arbitrary 32-bit valueRonald G. Minnich
We've had obscure errors as the size of the bootblock changes. This fix allows us to use a 32-bit constant. Please test on real hardware before you ack. Change-Id: Ic3d9f4763554bd6104ae9c4ce5bbacd17b40872c Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2168 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
2013-01-17make main() in snow's romstage.c our romstage entry pointDavid Hendricks
Our earlier attempt was jumping straight from asm to the old u-boot board_init_f in lowlevel_init_c.c. We are getting ready to transition to using a real bootblock for ARM, so add romstage.c to the files compiled and we'll make main() our entry point. This also updates romstage.ld to place main() (*(.text.startup)) at the beginning of romstage. Change-Id: Ifc77a6bfba27d915c4cad62c6c8040665294628a Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2163 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-17armv7: Place reset vector + CBFS header + bootblock dynamicallyDavid Hendricks
This replaces hard-coded bootblock offsets using the new scheme. The assembler will place the initial branch instruction after BL1, skip 2 aligned chunks, and place the remaining bootblock code after. It will also leave an anchor string, currently 0xdeadbeef which cbfstool will find. Once found, cbfstool will place the master CBFS header at the next aligned offset. Here is how it looks: 0x0000 |--------------| | BL1 | 0x2000 |--------------| | branch | 0x2000 + align |--------------| | CBFS header | 0x2000 + align * 2 |--------------| | bootblock | |--------------| TODO: The option for alignment passed into cbfstool has always been 64. Can we set it to 16 instead? Change-Id: Icbe817cbd8a37f11990aaf060aab77d2dc113cb1 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2148 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-17ARM bootblock approachDavid Hendricks
This lays out the groundwork for using a proper bootblock on ARM. Currently we bypass the bootblock entirely and go straight to romstage. However we want to utilize CBFS to maximize flexibility of placing code without relying on a lot of magic numbers which will break depending on the SoC in use. Change-Id: I9cc2a8191d2db38b27b6363ba673e5a360de9684 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2118 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-16armv7: delete unneeded ptrace.hStefan Reinauer
... and delete traces in source files. Change-Id: Ie0f70a479f1eadadc654a41fa3c426d1d4ac2f2b Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2152 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-12Implement GCC code coverage analysisStefan Reinauer
In order to provide some insight on what code is executed during coreboot's run time and how well our test scenarios work, this adds code coverage support to coreboot's ram stage. This should be easily adaptable for payloads, and maybe even romstage. See http://gcc.gnu.org/onlinedocs/gcc/Gcov.html for more information. To instrument coreboot, select CONFIG_COVERAGE ("Code coverage support") in Kconfig, and recompile coreboot. coreboot will then store its code coverage information into CBMEM, if possible. Then, run "cbmem -CV" as root on the target system running the instrumented coreboot binary. This will create a whole bunch of .gcda files that contain coverage information. Tar them up, copy them to your build system machine, and untar them. Then you can use your favorite coverage utility (gcov, lcov, ...) to visualize code coverage. For a sneak peak of what will expect you, please take a look at http://www.coreboot.org/~stepan/coreboot-coverage/ Change-Id: Ib287d8309878a1f5c4be770c38b1bc0bb3aa6ec7 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2052 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Martin Roth <martin@se-eng.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-12Move init.S to a proper filenameRonald G. Minnich
Also, remove unnecessary junk and prepare for future build changes. Change-Id: I143777ec7e67ea4d6fed00084aafcb94c7866b4d Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2141 Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
2013-01-11cbmem: replace pointer type by uint64_tStefan Reinauer
Since coreboot is compiled into 32bit code, and userspace might be 32 or 64bit, putting a pointer into the coreboot table is not viable. Instead, use a uint64_t, which is always big enough for a pointer, even if we decide to move to a 64bit coreboot at some point. Change-Id: Ic974cdcbc9b95126dd1e07125f3e9dce104545f5 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2135 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-10armv7: replace magic constant for romstage locationDavid Hendricks
This replaces 0x02023400 with an SoC-specific Kconfig variable. Change-Id: I21482d54a1e1fa6c4437c030ddae2b0bb3331551 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2130 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-10armv7: add *(.data) back into .romdata sectionDavid Hendricks
This doesn't seem to be strictly required (so far), but makes sense. Change-Id: I18416c427ff886507ae09c7fc1a018baf94af24a Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2131 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-10armv7: update board_init_f function signatureDavid Hendricks
We don't pass arguments when we jump out of assembly code. Change-Id: Iccf3a6f713e260b08f9ff47e8b542b9e96369166 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2122 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-10armv7: delete some unused filesDavid Hendricks
Change-Id: I4601b97cbd7dbfb6ee742b3920d2aac4ac49b958 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2121 Tested-by: build bot (Jenkins) Reviewed-by: Hung-Te Lin <hungte@chromium.org>
2013-01-05ARMv7: drop __ASSEMBLY__Stefan Reinauer
We moved to using __ASSEMBLER__ years ago since it is set by as. Change-Id: I60103ba23ebe87be1d0bc63beed0ef5b05eed4f2 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2111 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins)
2013-01-05ARMv7: drop __KERNEL__Stefan Reinauer
It's a bad Linux heritage.. We have no userland in firmware. Change-Id: Ib19e5ba713078ca37514571213d19f418417b964 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2108 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-04Flatten the treeRonald G. Minnich
It makes no sense to have directories with one file. Change-Id: I65ba93dda5e6a4bcc5a7cc049c1378ebf5d6abcd Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2105 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2013-01-04Revert "armv7: pass bootblock offset from Kconfig into cbfstool"Ronald G. Minnich
This reverts commit ec8d35fe911ab35a5f40fd5b452f5463857b244a We are almost certain that this is not necessary. Change-Id: I70e94f883be95655da00a0b127ed9ffd7c81c63b Reviewed-on: http://review.coreboot.org/2104 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> Tested-by: build bot (Jenkins)
2013-01-04ARMv7: Make ABI compatible to reference toolchainStefan Reinauer
Our reference toolchain uses -mabi=aapcs whereas we started forcing -mabi=aapcs-linux. Drop this to prevent ABI incompatibility. Also drop -fno-common since that's set in the top level Makefile.inc already. Change-Id: I4afdcf5da9a5d86c2f9e5de5c7d523ccd2f5f1e0 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2103 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-04ARMv7: drop libgcc copyStefan Reinauer
We accidently checked in some files from libgcc as well as a Makefile from u-boot and a duplicate implementation of div0. Drop all those files to reduce the confusion. Change-Id: I8ff6eabbced6f663813f8cc55f19c81839d03477 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2102 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-04Clean up ARMv7 architecture KconfigStefan Reinauer
There was a misuse of bool that would cause the dcache policy to not be set up correctly, but instead present options "y" and "n" in the Kconfig menu. Also, TINY_BOOTBLOCK was removed a while ago, everything is TINY_BOOTBLOCK now. Hence remove the option. Change-Id: I5c28ac828955c69614c7bdaf106f79db51e68723 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2101 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-04update CFLAGS for armv7David Hendricks
This updates $CFLAGS used for armv7. Most of them were just added to be consistent with what u-boot does. The important ones here are -march=armv7-a and -mthumb (to allow 16-bit Thumb instructions). I removed the hard float support because it got errors and coreboot should never use floats anyway. We're still having trouble with enums but I want to see how far it gets with this patch. Also, put the flags in a form that makes diffs easier to read. It's almost impossible otherwise. Finally, move some flags to the architecture Makefile, and rely on the fact that some are set for all architectures. Depends-On: I6f730d017391f9ec4401cdfd34931c869df10a9e Change-Id: Ia8a1ae22959933e06f7b996d1832cea40819f1ff Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2075 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-01-03armv7: pass bootblock offset from Kconfig into cbfstoolDavid Hendricks
This replaces a somewhat useless calculation used earlier (which always evaluated to 0) with an offset to specify the location of the Coreboot bootblock. Change-Id: Ib85aaccf138cebeb6bf8aedf82308861206dff48 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2094 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-01-03armv7: create init.S for early ARMv7 initDavid Hendricks
The old start.S file did a lot of work and had AP-specific #ifndef's. The new init.S will eventually contain only bare minimum generic ARM code for use by the bootblock. Processor-specific stuff and things that take place later in the boot process should go elsewhere. Change-Id: I7db0a77ee4bbad1ddecb193ea125d8941a50532b Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2083 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-29remove obsolete include paths from INCLUDESDavid Hendricks
Change-Id: I621fd49b1f1b96ef388c61ff1abc2130ad2163a5 Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2082 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-29Simplify romstage.ld for armv7David Hendricks
This is still a work-in-progress, but it seems to work better than before and is less complicated... Change-Id: I6f730d017391f9ec4401cdfd34931c869df10a9e Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2041 Tested-by: build bot (Jenkins)
2012-12-19Remove colors from build system outputPatrick Georgi
While "payload none" is undesirable for instant flashing, assume that it was a conscious user choice. (more immediate: jenkins isn't happy with escape sequences) Change-Id: I9958b34a037b4d10bb7dba893335a63917623a70 Signed-off-by: Patrick Georgi <patrick@georgi-clan.de> Reviewed-on: http://review.coreboot.org/2055 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-12Fix ARMv7 payload handlingStefan Reinauer
cbfstool was called with the wrong parameters Change-Id: I405d0fd7c84b46da3c98a36fd19ef0034dc175cf Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2022 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-08WIP: Initial ARMv7 architecture implementation in corebootStefan Reinauer
The first ARMv7 CPU we're going to support is the Exynos 5250 used in the Google Snow ChromeBook. Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/2004 Tested-by: build bot (Jenkins)
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>
2012-11-30Add dummy Kconfig options for armv7David Hendricks
This adds a dummy config for ARMV7 for developing various follow-up patches which rely on ARCH_ARMV7. Change-Id: Id913054d916f41607d10ebc02aaf74082e14b554 Signed-off-by: Hung-Te Lin <hungte@chromium.org> Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/1939 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
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