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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
