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2014-12-16i2c: Replace the i2c API.Gabe Black
The new API is in use in depthcharge and is based around the "i2c_transfer" function instead of i2c_read and i2c_write. The new function takes an array of i2c_seg structures which represent each portion of the transfer after a start bit and before the stop bit. If there's more than one segment, they're seperated by repeated starts. Some wrapper functions have also been added which make certain common operations easy. These include reading or writing a byte from a register or reading or writing a blob of raw data. The i2c device drivers generally use these wrappers but can call the i2c_transfer function directly if the need something different. The tegra i2c driver was very similar to the one in depthcharge and was simple to convert. The Exynos 5250 and 5420 drivers were ported from depthcharge and replace the ones in coreboot. The Exynos 5420 driver was ported from the high speed portion of the one in coreboot and was straightforward to port back. The low speed portion and the Exynos 5250 drivers had been transplanted from U-Boot and were replaced with the depthcharge implementation. BUG=None TEST=Built and booted on nyan with and without EFS. Built and booted on, pit and daisy. BRANCH=None Original-Change-Id: I1e98c3fa2560be25444ab3d0394bb214b9d56e93 Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/193561 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Reviewed-by: Jimmy Zhang <jimmzhang@nvidia.com> Original-Tested-by: Jimmy Zhang <jimmzhang@nvidia.com> Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 00c423fb2c06c69d580ee3ec0a3892ebf164a5fe) This cherry-pick required additional changes to the following: src/cpu/allwinner/a10/twi.c src/drivers/xpowers/axp209/axp209.c Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I691959c66308eeeec219b1bec463b8b365a246d7 Reviewed-on: http://review.coreboot.org/7751 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2014-12-09spi: Eliminate the spi_cs_activate and spi_cs_deactivate functions.Gabe Black
They were only used internal to the SPI drivers and, according to the comment next to their prototypes, were for when the SPI controller doesn't control the chip select line directly and needs some help. BUG=None TEST=Built for link, falco, and rambi. Built and booted on peach_pit and nyan. BRANCH=None Original-Change-Id: If4622819a4437490797d305786e2436e2e70c42b Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/192048 Original-Reviewed-by: Gabe Black <gabeblack@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 1e2deecd9d8c6fd690c54f24e902cc7d2bab0521) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Ida08cbc2be5ad09b929ca16e483c36c49ac12627 Reviewed-on: http://review.coreboot.org/7708 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins)
2014-12-09spi: Remove the spi_set_speed and spi_cs_is_valid functions.Gabe Black
spi_set_speed was never implemented, and spi_cs_is_valid was only implemented as a stub and never called. BUG=None TEST=Built for rambi, falco, and peach_pit. BRANCH=None Original-Change-Id: If30c2339f5e0360a5099eb540fab73fb23582905 Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/192045 Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 98c1f6014c512e75e989df36b48622a7b56d0582) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Iebdb2704ee81aee432c83ab182246d31ef52a6b6 Reviewed-on: http://review.coreboot.org/7707 Reviewed-by: Patrick Georgi <pgeorgi@google.com> Tested-by: build bot (Jenkins)
2014-12-09spi: Factor EC protocol details out of the SPI drivers.Gabe Black
The SPI drivers for tegra and exynos5420 have code in them which waits for a frame header and leaves filler data out. The SPI driver shouldn't have support for frame headers directly. If a device uses them, it should support them itself. That makes the SPI drivers simpler and easier to write. When moving the frame handling logic into the EC support code, EC communication continued to work on tegra but no longer worked on exynos5420. That suggested the SPI driver on the 5420 wasn't working correctly, so I replaced that with the implementation in depthcharge. Unfortunately that implementation doesn't support waiting for a frame header for the EC, so these changes are combined into one. BUG=None TEST=Built and booted on pit. Built and booted on nyan. In both cases, verified that there were no error messages from the SPI drivers or the EC code. BRANCH=None Original-Change-Id: I62a68820c632f154acece94f54276ddcd1442c09 Original-Signed-off-by: Gabe Black <gabeblack@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/191192 Original-Reviewed-by: Hung-Te Lin <hungte@chromium.org> Original-Commit-Queue: Gabe Black <gabeblack@chromium.org> Original-Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 4fcfed280ad70f14a013d5353aa0bee0af540630) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: Id8824523abc7afcbc214845901628833e135d142 Reviewed-on: http://review.coreboot.org/7706 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <gaumless@gmail.com>
2014-12-08samsung/exynos5420: Spelling FixesMartin Roth
Change-Id: I966645c83ae78943a7dbb9dc05af4fded6f4e5b5 Signed-off-by: Martin Roth <martin.roth@se-eng.com> Reviewed-on: http://review.coreboot.org/7703 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-12-02Replace hlt with halt()Patrick Georgi
There were instances of unneeded arch/hlt.h includes, various hlt() calls that weren't supposed to exit (but might have) and various forms of endless loops around hlt() calls. All these are sorted out now: unnecessary includes are dropped, hlt() is uniformly replaced with halt() (except in assembly, obviously). Change-Id: I3d38fed6e8d67a28fdeb17be803d8c4b62d383c5 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: http://review.coreboot.org/7608 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-11-10arm: Redesign, clarify and clean up cache related codeJulius Werner
This patch changes several cache-related pieces to be cleaner, faster or more correct. The largest point is removing the old arm_invalidate_caches() function and surrounding bootblock code to initialize SCTLR and replace it with an all-assembly function that takes care of cache and SCTLR initialization to bring the system to a known state. It runs without stack and before coreboot makes any write accesses to be as compatible as possible with whatever state the system was left in by preceeding code. This also finally fixes the dreaded icache bug that wasted hundreds of milliseconds during boot. Old-Change-Id: I7bb4995af8184f6383f8e3b1b870b0662bde8bd4 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/183890 (cherry picked from commit 07a35925dc957919bf88dfc90515971a36e81b97) nyan_big: apply cache-related changes from nyan This applies the same changes from 07a3592 that were applied to nyan. Old-Change-Id: Idcbe85436d7a2f65fcd751954012eb5f4bec0b6c Reviewed-on: https://chromium-review.googlesource.com/184551 Commit-Queue: David Hendricks <dhendrix@chromium.org> Tested-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 4af27f02614da41c611aee2c6d175b1b948428ea) Squashed the followup patch for nyan_big into the original patch. Change-Id: Id14aef7846355ea2da496e55da227b635aca409e Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> (cherry picked from commit 4cbf25f8eca3a12bbfec5b015953c0fc2b69c877) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Reviewed-on: http://review.coreboot.org/6993 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-11-01{cpu,soc}: Use DEVICE_NOOP macro over dummy symbolEdward O'Callaghan
Change-Id: Iaf2b2873bd1c52d7f936bd9b483e194a0872a626 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/7285 Tested-by: build bot (Jenkins) Reviewed-by: Bruce Griffith <Bruce.Griffith@se-eng.com>
2014-10-16uarts: 32/64 cleanupRonald G. Minnich
We had lots of casts that caused warnings when compiling on RISCV. Clean them up. Change-Id: I46fcb33147ad6bf75e49ebfdfa05990e8c7ae4eb Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/7066 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-09-22Add check_member macro to allow clean and easy struct offset checkingJulius Werner
This patch adds a new static assertion macro that can be used to check the offsets in structures that overlay register sets at compile time. It uses the _Static_assert() declaration from the new ISO C11 standard, which is supported (even without -std=c11) by GCC after version 4.6. (There is supposedly also support in clang, although I haven't tried it... let's deal with compiler issues when/if they turn up.) I've added it to all structures for our current ARM SoCs for now, and I think every new register overlay we add going forward should use them (at least for the last member, but feel free to add more if you think it's useful). Change-Id: If32510e7049739ad05618d363a854dc372d64386 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/179412 Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Stefan Reinauer <reinauer@chromium.org> (cherry picked from commit cef5fa13c31375a316ca4556c0039b17c8ea7900) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6905 Tested-by: build bot (Jenkins)
2014-09-19exynos5250: remove unused ret variable in cpu.cIsaac Christensen
Showed up as an error when '--gc-sections' was added as a flag to the compiler. Change-Id: I214d3e16a72fca0becc677d7af66097464d64247 Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6926 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2014-09-15exynos5250: Fix PMU register address mapJulius Werner
Patch 12b121f3fef61d introduced an off-by-one error in the offsets of the PMU register struct, which put both the newly added register and the PSHOLD that comes after it in the wrong place. This patch corrects the offsets (5420 had already been correct). Change-Id: I1d9d31a6a73ee91890824e94fbd247d5feb4f6ae Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/179411 Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 5fdc74bc18bcb1066a0ce3ba94829af1b175173b) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6892 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-09-10Exynos5420: Fix up the i2c driver for use with the TPM driverGabe Black
The TPM driver expects to call i2c_read with zero address length. The i2c driver wasn't prepared to handle that particularly in the case of reads because it expected to send an address before switching over to read mode for the data. This change also fixes up the read and write calls to consistently be read32 and write32 instead of readl and writel. Change-Id: I33dee89b83d4cd9d3e1b90e84b40e761bb8d4de4 Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/175966 Reviewed-by: Stefan Reinauer <reinauer@chromium.org> Tested-by: Stefan Reinauer <reinauer@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> (cherry picked from commit cf686269424ea938d6f953d0f76103182eb71297) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6857 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-09-09exynos: Install the BL1 and set the checksum in the Makefile.Gabe Black
Install the BL1 and set up the checksum in the Makefile instead of relying on post processing. Import the exynos checksum script, split it in two and simplify it significantly. Stop putting the CBFS header in the midst of the bootblock so that it can be checksummed before CBFS is put together. Stop saving space for it and leaving an anchor in the bootblock which nobody looks for. Change-Id: Icbb5a5914ece60b2827433b6dc29d80db996ea6c Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/179229 Reviewed-by: Ronald Minnich <rminnich@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit aa3a416705517c0a6ddfdeb19905ac8cafb33df1) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6834 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-08-29exynos: Fix the name of the chip_operations structures.Gabe Black
The exynos directories had been moved from src/cpu to src/soc, but the name of the chip_operations structure wasn't updated properly. That meant that the SOCs never installed their memory resources and the ram stage would fail to load the payload. Change-Id: Ib60489b6d3434e3ebd13827a804452f762747f1b Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: https://chromium-review.googlesource.com/172400 Reviewed-by: David Hendricks <dhendrix@chromium.org> Commit-Queue: Gabe Black <gabeblack@chromium.org> Tested-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit 9100d475ebcc4dae23184583a6cc0162577e70d1) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6781 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-08-29arm: libpayload: Make cache invalidation take pointers instead of integersJulius Werner
This minor refactoring patch changes the signature of all limited cache invalidation functions in coreboot and libpayload from unsigned long to void * for the address argument, since that's really what you have in 95% of the cases and I think it's ugly to have casting boilerplate all over the place. Change-Id: Ic9d3b2ea70b6aa8aea6647adae43ee2183b4e065 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/167338 (cherry picked from commit d550bec944736dfa29fcf109e30f17a94af03576) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6623 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-26armv7: Move Exynos from 'cpu' to 'soc'.Hung-Te Lin
The Exynos family and most ARM products are SoC, not just CPU. We used to put ARM code in src/cpu to avoid polluting the code base for what was essentially an experiment at the time. Now that it's past the experimental phase and we're going to see more SoCs (including intel/baytrail) in coreboot. Change-Id: I5ea1f822664244edf5f77087bc8018d7c535f81c Reviewed-on: https://chromium-review.googlesource.com/170891 Tested-by: Hung-Te Lin <hungte@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Ronald Minnich <rminnich@chromium.org> Commit-Queue: Hung-Te Lin <hungte@chromium.org> (cherry picked from commit c8bb8fe0b20be37465f93c738d80e7e43033670a) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6739 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>