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2018-09-26mb/lowrisc: Remove the Nexys4DDR portJonathan Neuschäfer
This board doesn't support the newest RISC-V Privileged Architecture spec (1.10), and it's based on an FPGA so it's a moving target. Now that there's actual RISC-V silicon out there (from SiFive), mb/lowrisc/nexys4ddr will only continue to bitrot. Change-Id: I4e3e715106a1a94381a563dc4a56781c35883c2d Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/28706 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Hug <philipp@hug.cx> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2018-09-14arch/riscv: provide a monotonic timerPhilipp Hug
The RISC-V Privileged Architecture specification defines the Machine Time Registers (mtime and mtimecmp) in section 3.1.15. Makes it possible to use the generic udelay. The timer is enabled using RISCV_USE_ARCH_TIMER for the lowrisc, sifive and ucb soc. Change-Id: I5139601226e6f89da69e302a10f2fb56b4b24f38 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/27434 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-10soc/sifive/fu540: Makefile: include mtime_init in ramstagePhilipp Hug
Fix compilation issue clint.c/mtime.c is needed as well in ramstage due to CR 28372 and 28355 Change-Id: I7c7768744a165b97978bb8f7f95acf7b32ca4aa4 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28551 Tested-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2018-09-10riscv: update mtime initializationXiang Wang
Add a interface, which is implemented by SoC. Change-Id: I5524732f6eb3841e43afd176644119b03b5e5e27 Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/28372 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-07-17riscv: add support for modifying compiler optionsXiang Wang
Each HART of a SoC like fu540 supports a different ISA. In order for the coreboot's code can run on each core, need to modify the compile options. So add this code. Change-Id: Ie33edc175e612846d4a74f3cbf7520d4145cb68b Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/27442 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Philipp Hug <philipp@hug.cx>
2017-11-07RISC-V boards: Stop using the config stringJonathan Neuschäfer
RISC-V is moving towards OpenFirmware-derived device trees, and the old functions to read the config string don't work anymore. Use dummy values for the memory base and size until we can query the device tree. Change-Id: Ice13feae4da2085ee56bac4ac2864268da18d8fe Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/21690 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2017-10-23soc: Add Kconfig for each soc vendorChris Ching
Allows explicit ordering for vendors that share a common configuration that must be sourced last. The issue is that chips in soc/{amd,intel}/[ab].* will be able to override defaults set in this file, but Kconfig files that get sourced later (soc/amd/[d-z].*) will NOT be able to override these defaults. Note: intel and amd soc chips now need to be added manually to the new Kconfig file BUG=b:62235314 TEST=make lint-stable Change-Id: Ida82ef184712e092aec1381a47aa1b54b74ed6b6 Signed-off-by: Chris Ching <chingcodes@google.com> Reviewed-on: https://review.coreboot.org/22123 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-12-06soc/lowrisc: Place CBMEM at top of autodetected RAMJonathan Neuschäfer
Change-Id: I9f169db330d1792128db7a6308ed3afbe5803c03 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/17708 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2016-10-25riscv: add the lowrisc System On Chip supportRonald G. Minnich
Change-Id: I8d81b9cf280e724c935106c8f00692300094ad3f Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: https://review.coreboot.org/17119 Tested-by: build bot (Jenkins) Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>