Note that currently, traps are only handled by the trap handler
installed in the bootblock. The romstage and ramstage don't override it.
TEST=Booted emulation/spike-qemu and lowrisc/nexys4ddr with a linux
payload. It worked as much as before (Linux didn't boot, but it
made some successful SBI calls)
Change-Id: Icce96ab3f41ae0f34bd86e30f9ff17c30317854e
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/17057
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
spike_util.h:
- (LOG_)REGBYTES and STORE are already defined in
arch/riscv/include/bits.h.
- TOHOST_CMD, FROMHOST_* are helper macros for the deprecated
Host-Target Interface (HTIF).
qemu_util.c:
- mcall_query_memory now uses mprv_write_ulong instead of first
translating the address and then accessing it normally. Thus,
translate_address isn't used anymore.
- Several functions used the deprecated HTIF CSRs mtohost/mfromhost.
They have mostly been replaced by stub implementations.
- htif_interrupt and testPrint were unused and have been deleted.
spike_util.c:
- translate_address and testPrint were unused and have been deleted.
After this commit, spike_util.c and qemu_util.c are exactly the same and
can be moved to a common location.
Change-Id: I1789bad8bbab964c3f2f0480de8d97588c68ceaf
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/16985
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
This aligns the code in qemu-riscv with the code in spike-riscv.
The previous code gives an error in the updated toolchain as the
send_ipi CSR is no longer valid.
This gave the build error:
src/mainboard/emulation/qemu-riscv/qemu_util.c:64:
Error: Instruction csrw requires absolute expression
Change-Id: Iac0f66e8e9935f45c8094d5e16bedb7ac5225424
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/16244
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
mb() is used in src/arch/riscv/ and src/mainboard/emulation/*-riscv/.
It is currently provided by atomic.h, but I think it fits better into
barrier.h.
The "fence" instruction represents a full memory fence, as opposed to
variants such as "fence r, rw" which represent a partial fence. An
operating system might want to use precisely the right fence, but
coreboot doesn't need this level of performance at the cost of
simplicity.
Change-Id: I8d33ef32ad31e8fda38f6a5183210e7bd6c65815
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15830
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Existing memlayout code placed sections in overlapping areas, and would
overwrite the payload if it was large enough. Update memlayout.ld in
src/mainboard/emulation/spike-riscv to represent the spike emulator, and
add sbi interface which now has room into src/arch/riscv/bootblock.S.
Add utility code to qemu-riscv, but emulator itself has yet to be
updated to new ISA and as such should not be used.
Update Makefile to include all the files necessary for sbi interface.
Clean up unused include in src/arch/riscv/include/atomic.h and
whitespace in src/mainboard/emulation/spike-riscv/memlayout.ld
Fixed whitespace issues in spike_util.c
Change-Id: Id97fe75e45ac1361005bec6d421756ee3f98a508
Signed-off-by: Thaminda Edirisooriya <thaminda@google.com>
Reviewed-on: http://review.coreboot.org/11370
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Jonathan Neuschäfer