No description
be47636de0
Enable auto entry and auto exit self-refresh. Configure entry idle time to 16x long count sequences. Where a long count sequence is 1024 cycles. The idle entry configuration is based on 32x of the DLL lock time (512 cycles). A conservative setting to help minimize self-refresh enter/exit thrashing. BUG=chrome-os-partner:36456 BRANCH=broadcom-firmware TEST=When enable configuration CYGNUS_SDRAM_TEST_DDR, print on console: sdram initialization is completed. test ddr start from 0x60000000 to 0x80000000 ... test ddr end: fail=0 Translation table is @ 02004000 Mapping address range [0x00000000:0x00000000) as uncached Change-Id: Ibad220429fd52ead2933db03bec1a555f9385e53 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 3768f82ca268fb854f8c4753916518a1efdf887d Original-Reviewed-on: https://chrome-internal-review.googlesource.com/212125 Original-Reviewed-by: Scott Branden <sbranden@broadcom.com> Original-Reviewed-by: Daisuke Nojiri <dnojiri@google.com> Original-Commit-Queue: Daisuke Nojiri <dnojiri@google.com> Original-Tested-by: Daisuke Nojiri <dnojiri@google.com> Original-Signed-off-by: Icarus Chau <ichau@broadcom.com> Original-Change-Id: Icac1e12745d048b32e1804a546f6b49c8b5953c0 Original-Reviewed-on: https://chromium-review.googlesource.com/265862 Original-Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Commit-Queue: Daisuke Nojiri <dnojiri@chromium.org> Original-Trybot-Ready: Daisuke Nojiri <dnojiri@chromium.org> Original-Tested-by: Daisuke Nojiri <dnojiri@chromium.org> Reviewed-on: http://review.coreboot.org/9930 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> |
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| 3rdparty@892a6976ba | ||
| documentation | ||
| payloads | ||
| src | ||
| util | ||
| .gitignore | ||
| .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.