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bb932c56f0
This is a fix for the 'Lost arb' we're seeing on Nyan* during reboot stress testing. It occurs when we are slamming the default PMIC registers with pmic_write_reg(). Currently, I've only captured this a few times, and the bus clear seemed to work, as the PMIC writes continued (where they'd hang the system before bus clear) for a couple of regs, then it hangs hard, no messages, no 2nd lost arb, etc. So I've added code to the PMIC write function that will reset the SoC if any I2C error occurs. That seems to recover OK, i.e. on the next reboot the PMIC writes all go thru, boot is OK, kernel loads, etc. BUG=chrome-os-partner:28323 BRANCH=nyan TEST=Tested on nyan. Built for nyan and nyan_big. Original-Change-Id: I1ac5e3023ae22c015105b7f0fb7849663b4aa982 Original-Signed-off-by: Tom Warren <twarren@nvidia.com> Original-Reviewed-on: https://chromium-review.googlesource.com/197732 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Original-Reviewed-by: Jimmy Zhang <jimmzhang@nvidia.com> (cherry picked from commit f445127e2d9e223a5ef9117008a7ac7631a7980c) Signed-off-by: Marc Jones <marc.jones@se-eng.com> Change-Id: I584d55b99d65f1e278961db6bdde1845cb01f3bc Reviewed-on: http://review.coreboot.org/7897 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> |
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| 3rdparty@9f68e20e5e | ||
| documentation | ||
| payloads | ||
| src | ||
| util | ||
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| .gitmodules | ||
| .gitreview | ||
| COPYING | ||
| Makefile | ||
| Makefile.inc | ||
| README | ||
| toolchain.inc | ||
------------------------------------------------------------------------------- coreboot README ------------------------------------------------------------------------------- coreboot is a Free Software project aimed at replacing the proprietary BIOS (firmware) found in most computers. coreboot performs a little bit of hardware initialization and then executes additional boot logic, called a payload. With the separation of hardware initialization and later boot logic, coreboot can scale from specialized applications that run directly firmware, run operating systems in flash, load custom bootloaders, or implement firmware standards, like PC BIOS services or UEFI. This allows for systems to only include the features necessary in the target application, reducing the amount of code and flash space required. coreboot was formerly known as LinuxBIOS. Payloads -------- After the basic initialization of the hardware has been performed, any desired "payload" can be started by coreboot. See http://www.coreboot.org/Payloads for a list of supported payloads. Supported Hardware ------------------ coreboot supports a wide range of chipsets, devices, and mainboards. For details please consult: * http://www.coreboot.org/Supported_Motherboards * http://www.coreboot.org/Supported_Chipsets_and_Devices Build Requirements ------------------ * gcc / g++ * make Optional: * doxygen (for generating/viewing documentation) * iasl (for targets with ACPI support) * gdb (for better debugging facilities on some targets) * ncurses (for 'make menuconfig') * flex and bison (for regenerating parsers) Building coreboot ----------------- Please consult http://www.coreboot.org/Build_HOWTO for details. Testing coreboot Without Modifying Your Hardware ------------------------------------------------ If you want to test coreboot without any risks before you really decide to use it on your hardware, you can use the QEMU system emulator to run coreboot virtually in QEMU. Please see http://www.coreboot.org/QEMU for details. Website and Mailing List ------------------------ Further details on the project, a FAQ, many HOWTOs, news, development guidelines and more can be found on the coreboot website: http://www.coreboot.org You can contact us directly on the coreboot mailing list: http://www.coreboot.org/Mailinglist Copyright and License --------------------- The copyright on coreboot is owned by quite a large number of individual developers and companies. Please check the individual source files for details. coreboot is licensed under the terms of the GNU General Public License (GPL). Some files are licensed under the "GPL (version 2, or any later version)", and some files are licensed under the "GPL, version 2". For some parts, which were derived from other projects, other (GPL-compatible) licenses may apply. Please check the individual source files for details. This makes the resulting coreboot images licensed under the GPL, version 2.