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path: root/src/drivers/i2c/tpm/tpm.c
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2017-08-14i2c: Move to Linux like `struct i2c_msg`Nico Huber
Our current struct for I2C segments `i2c_seg` was close to being compa- tible to the Linux version `i2c_msg`, close to being compatible to SMBus and close to being readable (e.g. what was `chip` supposed to mean?) but turned out to be hard to fix. Instead of extending it in a backwards compatible way (and not touching current controller drivers), replace it with a Linux source compatible `struct i2c_msg` and patch all the drivers and users with Coccinelle. The new `struct i2c_msg` should ease porting drivers from Linux and help to write SMBus compatible controller drivers. Beside integer type changes, the field `read` is replaced with a generic field `flags` and `chip` is renamed to `slave`. Patched with Coccinelle using the clumsy spatch below and some manual changes: * Nested struct initializers and one field access skipped by Coccinelle. * Removed assumption in the code that I2C_M_RD is 1. * In `i2c.h`, changed all occurences of `chip` to `slave`. @@ @@ -struct i2c_seg +struct i2c_msg @@ identifier msg; expression e; @@ ( struct i2c_msg msg = { - .read = 0, + .flags = 0, }; | struct i2c_msg msg = { - .read = 1, + .flags = I2C_M_RD, }; | struct i2c_msg msg = { - .chip = e, + .slave = e, }; ) @@ struct i2c_msg msg; statement S1, S2; @@ ( -if (msg.read) +if (msg.flags & I2C_M_RD) S1 else S2 | -if (msg.read) +if (msg.flags & I2C_M_RD) S1 ) @@ struct i2c_msg *msg; statement S1, S2; @@ ( -if (msg->read) +if (msg->flags & I2C_M_RD) S1 else S2 | -if (msg->read) +if (msg->flags & I2C_M_RD) S1 ) @@ struct i2c_msg msg; expression e; @@ ( -msg.read = 0; +msg.flags = 0; | -msg.read = 1; +msg.flags = I2C_M_RD; | -msg.read = e; +msg.flags = e ? I2C_M_RD : 0; | -!!(msg.read) +(msg.flags & I2C_M_RD) | -(msg.read) +(msg.flags & I2C_M_RD) ) @@ struct i2c_msg *msg; expression e; @@ ( -msg->read = 0; +msg->flags = 0; | -msg->read = 1; +msg->flags = I2C_M_RD; | -msg->read = e; +msg->flags = e ? I2C_M_RD : 0; | -!!(msg->read) +(msg->flags & I2C_M_RD) | -(msg->read) +(msg->flags & I2C_M_RD) ) @@ struct i2c_msg msg; @@ -msg.chip +msg.slave @@ struct i2c_msg *msg; expression e; @@ -msg[e].chip +msg[e].slave @ slave disable ptr_to_array @ struct i2c_msg *msg; @@ -msg->chip +msg->slave Change-Id: Ifd7cabf0a18ffd7a1def25d1d7059b713d0b7ea9 Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20542 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2017-04-24drivers/i2c/tpm: Remove vendor.irqDaniel Kurtz
The vendor.irq field was originally intended for use as the TPM 1.2 "command complete" interrupt. However, all actual coreboot tpm drivers and hardware use the vendor.status method of checking command completion instead, and this irq field is not used. Let's just remove this unused functionality to simplify the code. BRANCH=none BUG=b:36786804 TEST=Boot reef w/ serial enabled firmware, verify verstage sees "cr50 TPM" and does not complain about lack of tis_plat_irq_status(). TEST=Boot eve w/ serial enabled firmware, verify verstage sees "cr50 TPM" and does not complain about lack of tis_plat_irq_status(). Change-Id: I994c5bfbd18124af9cb81d9684117af766ab0124 Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Reviewed-on: https://review.coreboot.org/19396 Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2017-04-13drivers/spi/tpm: Clean up SPI TPM driverFurquan Shaikh
1. Move common TIS macros to include/tpm.h. 2. Use common TIS macros while referring to status and access registers. 3. Add a new function claim_locality to properly check for required access bits and claim locality 0. BUG=b:36873582 Change-Id: I11bf3e8b6e1f50b7868c9fe4394a858488367287 Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/19213 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
2017-03-15drivers/i2c/tpm: Fix issues detected by checkpatchLee Leahy
Fix the following warnings detected by checkpatch.pl: WARNING: Prefer 'unsigned int' to bare use of 'unsigned' WARNING: braces {} are not necessary for single statement blocks WARNING: Unnecessary parentheses - maybe == should be = ? WARNING: line over 80 characters WARNING: missing space after return type TEST=Build and run on Galileo Gen2 Change-Id: I56f915f6c1975cce123fd38043bad2638717d88c Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: https://review.coreboot.org/18832 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-01-03i2c/tpm: Ignore 0xFF bytes for status and burstCountJulius Werner
We've found that the SLB9645 TPM sometimes seems to randomly start returning 0xFF bytes for all requests. The exact cause is yet unknown, but we should try to write our TIS code such that it avoids bad interactions with this kind of response (e.g. any wait_for_status() immediately succeeds because all "status bits" are set in the response). At least for status and burstCount readings we can say for sure that the value is nonsensical and we're already reading those in a loop until we get valid results anyway, so let's add code to explicitly discount 0xFF bytes. BRANCH=oak BUG=chrome-os-partner:55764 TEST=None Change-Id: I934d42c36d6847a22a185795cea49d282fa113d9 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/420470 Reviewed-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-on: https://review.coreboot.org/18006 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2016-09-21drivers/i2c/tpm: Split cr50 driver from main driverDuncan Laurie
Originally I thought it would be cleaner to keep this code in one place, but as things continue to diverge it ends up being easier to split this into its own driver. This way the different drivers in coreboot, depthcharge, and the kernel, can all be standalone and if one is changed it is easier to modify the others. This change splits out the cr50 driver and brings along the basic elements from the existing driver with no real change in functionality. The following commits will modify the code to make it consistent so it can all be shared with depthcharge and the linux kernel drivers. BUG=chrome-os-partner:53336 Change-Id: I3b62b680773d23cc5a7d2217b9754c6c28bccfa7 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16663 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-09-21drivers/i2c/tpm: Move common variables to headerDuncan Laurie
Move the common enums and variables to tpm.h so it can be used by multiple drivers. BUG=chrome-os-partner:53336 Change-Id: Ie749f13562be753293448fee2c2d643797bf8049 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16662 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-09-19Revert "drivers/i2c/tpm: Move common variables to header"Duncan Laurie
This reverts commit 64df72e8e2d1c086705325533767ca5e201e842a.
2016-09-19Revert "drivers/i2c/tpm: Split cr50 driver from main driver"Duncan Laurie
This reverts commit c565f9910707b91fcc7a27bab28806e558bb474d.
2016-09-19drivers/i2c/tpm: Split cr50 driver from main driverDuncan Laurie
Originally I thought it would be cleaner to keep this code in one place, but as things continue to diverge it ends up being easier to split this into its own driver. This way the different drivers in coreboot, depthcharge, and the kernel, can all be standalone and if one is changed it is easier to modify the others. This change splits out the cr50 driver and brings along the basic elements from the existing driver with no real change in functionality. The following commits will modify the code to make it consistent so it can all be shared with depthcharge and the linux kernel drivers. BUG=chrome-os-partner:53336 Change-Id: Ia9a65e72519b95f5739e3b7a16b9c2431d64ebe2 Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
2016-09-19drivers/i2c/tpm: Move common variables to headerDuncan Laurie
Move the common enums and variables to tpm.h so it can be used by multiple drivers. BUG=chrome-os-partner:53336 Change-Id: I0febe98620d0ddd4ec6b46cd3073e48c12926266 Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
2016-09-14drivers/i2c/tpm: Clean up handling of command readyDuncan Laurie
The TPM driver was largely ignoring the meaning of the command ready bit in the status register, instead just arbitrarily sending it at the end of every receive transaction. Instead of doing this have the command ready bit be set at the start of a transaction, and only clear it at the end of a transaction if it is still set, in case of failure. Also the cr50 function to wait for status and burst count was not waiting the full 2s that the existing driver does so that value is increased. Also, during the probe routine a delay is inserted after each status register read to ensure the TPM has time to actually start up. Change-Id: I1c66ea9849e6be537c7be06d57258f27c563c1c2 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16591 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
2016-09-08drivers/i2c/tpm: Fix early TPM probeDuncan Laurie
The early TPM probe was done directly in tis.c ignoring the lower layer that provides appropriate access to the chip. Move this into a tpm_vendor_probe() function so it can use iic_tpm_read() with all of the built-in delays and semantics instead of calling i2c_readb() directly from the wrong layer. This fixes early init failures that were seen with the cr50 i2c tpm on the reef mainboard. Change-Id: I9bb3b820d10f6e2ea24c57b90cf0edc813cdc7e0 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16527 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2016-09-06drivers/i2c/tpm: Add support for cr50 TPMDuncan Laurie
Add support for the cr50 TPM used in apollolake chromebooks. This requires custom handling due to chip limitations, which may be revisited but are needed to get things working today. - timeouts need to be longer - must use the older style write+wait+read read protocol - all 4 bytes of status register must be read at once - same limitation applies when reading burst count from status reg - burst count max is 63 bytes, and burst count behaves slightly differently than other I2C TPMs - TPM expects the host to drain the full burst count (63 bytes) from the FIFO on a read Luckily the existing driver provides most abstraction needed to make this work seamlessly. To maximize code re-use the support for cr50 is added directly instead of as a separate driver and the style is kept similar to the rest of the driver code. This was tested with the cr50 TPM on a reef board with vboot use of TPM for secdata storage and factory initialization. Change-Id: I9b0bc282e41e779da8bf9184be0a11649735a101 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16396 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@googlemail.com>
2016-09-06drivers/i2c/tpm: Allow sleep durations to be set by the chipDuncan Laurie
Allow the sleep durations used by the driver to be set by the specific chip so they can be tuned appropriately. Since we need to read the chip id to know the values use very conservative defaults for the first command and then set it to the current values by default. Change-Id: Ic64159328b18a1471eb06fa8b52b589eec1e1ca2 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16395 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2016-09-06drivers/i2c/tpm: Make driver safe for use in x86 pre-ramDuncan Laurie
Use CAR accessors where needed for accessing static data. In some cases this required some minor restructuring to pass in a variable instead of use a global one. For the tpm_vendor_init the structure no longer has useful defaults, which nobody was depending on anyway. This now requires the caller to provide a non-zero address. Tested by enabling I2C TPM on reef and compiling successfully. Change-Id: I8e02fbcebf5fe10c4122632eda1c48b247478289 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/16394 Tested-by: build bot (Jenkins) Reviewed-by: Furquan Shaikh <furquan@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-09-07Drop "See file CREDITS..." commentStefan Reinauer
coreboot has no CREDITS file. Change-Id: Iaa4686979ba1385b00ad1dbb6ea91e58f5014384 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/11514 Tested-by: build bot (Jenkins) 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>
2015-04-21Unify byte order macros and clrsetbitsJulius Werner
This patch removes quite a bit of code duplication between cpu_to_le32() and clrsetbits_le32() style macros on the different architectures. This also syncs those macros back up to the new write32(a, v) style IO accessor macros that are now used on ARM and ARM64. CQ-DEPEND=CL:254862 BRANCH=none BUG=chromium:444723 TEST=Compiled Cosmos, Daisy, Blaze, Falco, Pinky, Pit, Rambi, Ryu, Storm and Urara. Booted on Jerry. Tried to compare binary images... unfortunately something about the new macro notation makes the compiler evaluate it more efficiently (not recalculating the address between the read and the write), so this was of limited value. Change-Id: If8ab62912c952d68a67a0f71e82b038732cd1317 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: fd43bf446581bfb84bec4f2ebb56b5de95971c3b Original-Change-Id: I7d301b5bb5ac0db7f5ff39e3adc2b28a1f402a72 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/254866 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9838 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-10TPM: Reduce buffer size to fix stack overflowJulius Werner
The TPM driver by default allocates a 4K transfer buffer on the stack, which leads to lots of fun on boards with 2K or 3K stack sizes. On RK3288 this ends up writing over random memory sections which dependent on the memlayout of the day might contain timestamp data (no big deal) or page tables (-> bad time). This patch fixes the problem by reducing the buffer size to slightly above 1K, which still seems to work as far as I can tell. There was already some really odd code that #undef'ed this value and redefined it with the lower number in one .c file (unfortunately not the one with the buffer declaration), with no explanation whatsoever... I'm removing that and just assume the smaller value will be fine for everything. BRANCH=veyron BUG=None TEST=Booted Pinky and Falco. Change-Id: I440a5662b41cbd8b7becab3113262e1140b7f763 Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Original-Commit-Id: 3d3288041b6629b7623b9d58816e782e72836b81 Original-Change-Id: Idf80f44cbfb9617c56b64a5c88ebedf7fcb4ec71 Original-Signed-off-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/236976 Original-Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/9481 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-04-10tpm: allow 0 as valid i2c bus numberDaisuke Nojiri
tpm driver uses bus=0 as indication of uninitialized tpm device. this change allows 0 as a valid i2c bus number. BUG=None BRANCH=ToT TEST=Built cosmos. Change-Id: Ie8d285abff11643cc3efc0fa30e4afcc3ca1c0d5 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 493077b68cf46b08f0d1ddfe57bf6064d714d537 Original-Change-Id: Iac55e88db4ef757a292270e7201d8fdd37a90b50 Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/226294 Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9405 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-01-16coreboot tpm: Fix printk format specifiersFurquan Shaikh
BUG=None BRANCH=None TEST=Compiles successfully Original-Change-Id: I828776724dce287d9a7eb732f2c9ecccf8d68229 Original-Signed-off-by: Furquan Shaikh <furquan@google.com> Original-Reviewed-on: https://chromium-review.googlesource.com/209336 Original-Tested-by: Furquan Shaikh <furquan@chromium.org> Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org> Original-Commit-Queue: Furquan Shaikh <furquan@chromium.org> (cherry picked from commit b50c9441ddaeabc5aa039f2141853ed7ba7a9d5b) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I6e81312609448c531345e592ee371ea53dc0916c Reviewed-on: http://review.coreboot.org/8221 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins)
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>
2014-09-10tpm: Clean up I2C TPM driverStefan Reinauer
Drop a lot of u-boot-isms and share common TIS API between I2C driver and LPC driver. Signed-off-by: Stefan Reinauer <reinauer@google.com> Change-Id: I43be8eea0acbdaef58ef256a2bc5336b83368a0e Reviewed-on: https://chromium-review.googlesource.com/175670 Commit-Queue: Stefan Reinauer <reinauer@chromium.org> Tested-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-by: David Hendricks <dhendrix@chromium.org> (cherry picked from commit 3fc8515b9dcef66998658e1aa5c020d22509810c) Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6855 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2014-08-10drivers: Add I2C TPM driver to corebootStefan Reinauer
On ARM platforms the TPM is not attached through LPC but through I2C. This patch adds an I2C TPM driver that supports the following chips: * Infineon SLB9635 * Infineon SLB9645 In order to select the correct TPM implementation cleanly, CONFIG_TPM is moved to src/Kconfig and does the correct choice. Old-Change-Id: I2def0e0f86a869d6fcf56fc4ccab0bc935de2bf1 Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: https://chromium-review.googlesource.com/167543 Reviewed-by: ron minnich <rminnich@chromium.org> (cherry picked from commit b4049a0e96f6335a93877e1e884f9a440487c421) i2c tpm: Remove mostly useless delay code/tables. I assume from the code in the TPM driver that the TPM spec defines different types of delays and timeouts which each have a particular duration, and that the TPM can tell you how long each type is if you ask it. There was a large table, some members of a data structure, and a function or two which managed the timeouts and figured their value for different operations. The timeout values for the various "ordinals" were never set in the vendor specific data structure, however, and always defaulted to 2 minutes. Similarly the timeouts a, b, c, and d were never overridden from their defaults. This change gets rid of all the timeout management code and makes the "ordinal" timeout 2 minutes and the a, b, c, and d timeouts 2 seconds, the larger of the two default values. This is a port from depthcharge to coreboot, original change: https://chromium-review.googlesource.com/#/c/168363/ Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Stefan Reinauer <reinauer@google.com> Old-Change-Id: I79696d6329184ca07f6a1be4f6ca85e1655a7aaf Reviewed-on: https://chromium-review.googlesource.com/168583 Reviewed-by: Gabe Black <gabeblack@chromium.org> Tested-by: Stefan Reinauer <reinauer@google.com> Commit-Queue: Stefan Reinauer <reinauer@google.com> (cherry picked from commit b22395a73f361c38626911808332a3706b2334fe) TPM: Stop requesting/releasing the TPM locality. The locality is requested when the TPM is initialized and released when it's cleaned up. There's no reason to set it to the same thing again and restore it back to the same value before and after every transaction. forward ported from https://chromium-review.googlesource.com/#/c/168400 Old-Change-Id: I291d1f86f220ef0eff6809c6cb00459bf95aa5e0 Signed-off-by: Gabe Black <gabeblack@google.com> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: https://chromium-review.googlesource.com/168584 Reviewed-by: Gabe Black <gabeblack@chromium.org> (cherry picked from commit cc866c20c6f936f349d2f1773dd492dca9bbf0c1) Squashed three commits for the i2c tpm driver. Change-Id: Ie7a50c50fda8ee986c02de7fe27551666998229d Signed-off-by: Isaac Christensen <isaac.christensen@se-eng.com> Reviewed-on: http://review.coreboot.org/6519 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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