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2018-12-07riscv: fix non-SMP supportPhilipp Hug
Use CONFIG_CPU_MAX which defaults to 1 instead of CONFIG_RISCV_HART_NUM. The default value of CONFIG_RISCV_HART_NUM was 0 and cause a jump to address 0. Add a die() call to fail gracefully. Change-Id: I4e3aa09b787ae0f26a4aae375f4e5fcd745a0a1e Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/c/29993 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Xiang Wang <wxjstz@126.com> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-12-05soc/sifive/fu540: Add helper function to get tlclk frequencyJonathan Neuschäfer
tlclk is not specific to the UART block in the FU540, so let's calculate its frequency in clock.c. Change-Id: I270920027f1132253e413a1bf9feb4fe279b651a Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/c/29335 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Philipp Hug <philipp@hug.cx>
2018-12-04soc/sifive/fu540: Load PLL settings from a structJonathan Neuschäfer
The different PLLs in the fu540 use the same register layout, so use one function (configure_pll) to program a PLL and wait for it to lock. This also makes it possible to dynamically calculate the PLL settings later. TEST=Boot until "Payload not loaded" on HiFive Unleashed Change-Id: I5c0cee886bad5758c70f967d2bb998c1e1a736ab Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/c/29356 Reviewed-by: Philipp Hug <philipp@hug.cx> Reviewed-by: Patrick Rudolph <siro@das-labor.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-12-03soc/sifive/fu540: Simplify UART refclk calculationJonathan Neuschäfer
clock_get_coreclk_khz() already detects whether the PLL or the input clock (hfclk) is used. Tested on HiFive Unleashed. Change-Id: I264977b0de0b81ef74a014984b6d33638ab33f4b Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/c/29334 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philipp Hug <philipp@hug.cx> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2018-11-05riscv: add support smp_pause / smp_resumeXiang Wang
See https://doc.coreboot.org/arch/riscv/ we know that we need to execute smp_pause at the start of each stage and smp_resume at the end of each stage. Change-Id: I6f8159637bfb15f54f0abeb335de2ba6e9cf82fb Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/29023 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Philipp Hug <philipp@hug.cx>
2018-10-30sifive/fu540: correct cbmem supportPhilipp Hug
Return correct memory location for cbmem instead of incorrectly returning memory size. Change-Id: If7f490a46edebb04c2280bf317d1adacef08f30d Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/29197 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Xiang Wang <wxjstz@126.com> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2018-09-26soc/sifive/fu540: Document #if ENV_ROMSTAGE lineJonathan Neuschäfer
Change-Id: Idcd72c558e46637b1b99e9613963436fedd4a8b9 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/28699 Reviewed-by: Philipp Hug <philipp@hug.cx> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-26soc/sifive/fu540: Remove PLL parameters from sdram.cJonathan Neuschäfer
These parameters are not used and not necessary in sdram.c, because the DDR PLL is configured in clock.c. Change-Id: I8060bd21e05765cedf7bdabc28052c32774f9ca1 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/28710 Reviewed-by: Philipp Hug <philipp@hug.cx> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-15sifive/hifive-unleashed: enable CBMEM supportPhilipp Hug
Change-Id: I3eacba9c1c20bbfa270dd7a9afabe48ed9092bcc Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28622 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-15soc/sifive: move ram_resource to mainboardPhilipp Hug
ram_resource is board specific and should be moved there. Change-Id: I50bd9aaaae39422e565d8bf205a6365c59299df0 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28621 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2018-09-14soc/sifive/fu540: Implement uart_platform_refclk for UART divisor calculationPhilipp Hug
After changing clock from 33.33Mhz to 1Ghz the UART divisor needs to be recalculated. Return correct tlck frequency in uart_platform_refclk. Change-Id: I2291e4198cf466a8334211c6c46bc3268fc979a9 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28584 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-09-14soc/sifive/fu540: Initialize SDRAMPhilipp Hug
Based on SiFive bootloader code Change-Id: I71043ce9e458e25e64da28d53cd36b02d2e22acc Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28604 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-14soc/sifive/fu540: Switch clock to 1GHz in romstagePhilipp Hug
Invoke clock_init in romstage for SiFive Unleashed. Change-Id: Ib869762d557e8fdf4c83a53698102df116d80389 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28602 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2018-09-14soc/sifive/fu540: create ram_resource with actual memory sizePhilipp Hug
Change-Id: If6af6f679e24e56c79b995de0970d4e6f455e40a Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28592 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> 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>
2018-09-14soc/sifive/fu540: add SiFive supplied header files for SDRAM initializationPhilipp Hug
Add original files from SiFive bootloader. Change-Id: I8beb75c070a6fac1700dd7644fc4fe9df226e716 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28594 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2018-09-13soc/sifive/fu540: Get SDRAM controller out of resetPhilipp Hug
Change-Id: Ifa6faffbaf353379f57e0f80c1c4ca2fc380f874 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28583 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-09-13soc/sifive/fu540: Update clock settings according SiFive bootloaderPhilipp Hug
The documentation unfortunately doesn't match what SiFive uses in their FSBL. Use the same values as in FSBL to make DDR RAM work. Change-Id: I844cc41ed197333adeae495e71ea70b4a9603650 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28582 Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2018-09-13uart/sifive: make divisor configurablePhilipp Hug
The SiFive UART on the HiFive Unleashed uses the tlclk as input clock which runs at coreclk / 2. The input frequency is configured in the board code depending on the current stage. (bootblock + romstage run at 33.33Mhz, ramstage at 1Ghz) Change-Id: Iaf66723dba3d308f809fde5b05dfc3e43f43bd42 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/27440 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-09-12soc/sifive/fu540: Initialize PLL and clockPhilipp Hug
Change-Id: Iba0669e08940e373aaf42cbba3a1ceffd68a4f52 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/27439 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-09-10soc/sifive: fix compiler warningPhilipp Hug
Fix the following compiler warning on the latest toolchain: src/soc/sifive/fu540/otp.c:48:1: error: useless storage class specifier in empty declaration [-Werror] } __packed; ^ Change-Id: Ice87c821de7650ac547394efa2a4bcc5ae1ea668 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/28553 Tested-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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>
2018-09-10soc/sifive/fu540: Add driver for OTP memoryPhilipp Hug
Provides minimal functionality to read the SOC s/n from the NeoFuse one time programmable memory. Change-Id: I14b010ad9958931e0a98a76f76090fd7c66f19a0 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/27435 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2018-09-10soc/sifive/fu540: add CLINT supportXiang Wang
Change-Id: Ibc3a8644dcb83d5697d9d6e551c7682377285116 Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/28355 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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>
2018-09-02riscv: separately define stack locations at different stagesXiang Wang
BOOTBLOCK/ROMSTAGE run in CAR/scratchpad. When RAMSTAGE begins execution will enable cache, then CAR will disappear. So the Stack will be separated. Change-Id: I37a0c1928052cabf61ba5c25b440363b75726782 Signed-off-by: Xiang Wang <wxjstz@126.com> Reviewed-on: https://review.coreboot.org/28383 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
2018-07-18sifive/fu540: add empty sdram init and size functionsPhilipp Hug
Change-Id: I65f900a3277bc8a4a83ebc8883d4a325bd690bf8 Signed-off-by: Philipp Hug <philipp@hug.cx> Reviewed-on: https://review.coreboot.org/27438 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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>
2018-04-26src/sifive: Add the SiFive Freedom Unleashed 540 SoCJonathan Neuschäfer
The FU540 is the first RISC-V SoC with the necessary resources to run Linux (an external memory interface, MMU, etc). More information is available on SiFive's website: https://www.sifive.com/products/hifive-unleashed/ Change-Id: Ic2a3c7b1dfa56b67cc0571969cc9cf67a770ae43 Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-on: https://review.coreboot.org/25789 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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