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For easier debugging it is useful to have a function that prints the PMP
regions.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I6ab1531c65b14690e37aecf57ff441bf22db1ce5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83283
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: ron minnich <rminnich@gmail.com>
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The QEMU Bochs display driver and the QEMU Firmware Configuration
interface code (in the qemu-i440fx mainboard dir) were written for x86.
These devices are available in QEMU VMs of other architectures as well,
so we want to port them to be independent from x86.
The main problem is that the drivers use x86 port I/O functions to
communicate with devices over PCI I/O space. These are currently not
available for ARM* and RISC-V, although it is often still possible to
access PCI I/O ports over MMIO through a translator.
Add implementations of port I/O functions that work with PCI I/O space
on these architectures as well, assuming there is such a translator at a
known address configured at build-time.
Change-Id: If7d9177283e8c692088ba8e30d6dfe52623c8cb9
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80372
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Change-Id: I9ed1a82fcd3fc29124ddc406592bd45dc84d4628
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82666
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
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Testing on the unmatched shows the code no longer works completely
correctly; Linux has taken over the handling of misalignment
anyway, because handling it in firmware, with the growing
complexity of the ISA and the awkward way in which it
has to be handled, is more trouble than its worth.
Plus, we don't WANT misalignment handled, magically, in
firmware: the cost of getting it wrong is high (as I've
spent a month learning); the performance is terrible (350x
slowdown; and most toolchains now know to avoid unaligned
load/store on RISC-V anyway.
But, mostly, if alignment problems exist, *we need to know*,
and if they're handled invisibly in firmware, we don't.
The problem with invisible handling was shown a while back
in the Go toolchain: runtime had a small error, such that
many misaligned load/store were happening, and it was
not discovered for some time. Had a trap been directed
to kernel or user on misalignment, the problem would
have been known immediately, not after many months.
(The error, btw, was masking the address with 3,
not 7, to detect misalignment; an easy mistake!).
But, the coreboot code does not work any more any way,
and it's not worth fixing. Remove it.
Tested by booting Linux to runlevel 1; before,
it would hang on an alignment fault, as the
alignment code was failing (somewhere).
This takes the coreboot SBI code much closer to
revival.
Change-Id: I84a8d433ed2f50745686a8c109d101e8718f2a46
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81416
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Older parts do not have the menvcfg csr.
Provide a Kconfig variable, default y, to enable it.
Check the variable in the payload code, when coreboot SBI
is used, and print out if it is enabled.
The SiFive FU540 and FU740 do not support this register;
set the variable to n for those parts.
Add constants for this new CSR.
Change-Id: I6ea302a5acd98f6941bf314da89dd003ab20b596
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81425
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
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Get used to this rate of change, SBI adds one new function a month,
on average, for the last 7 years.
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Change-Id: Iaad763464678d1921dfefdbee1e39fba2fe5585a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81286
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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This patch moves commonlib/stdlib.h -> commonlib/bsd/stdlib.h, since
all code is BSD licensed anyway.
It also moves some code from libpayloads stdlib.h to
commonlib/bsd/stdlib.h so that it can be shared with coreboot. This is
useful for a subsequent commit that adds devicetree.c into commonlib.
Also we don't support DMA on arm platforms in coreboot (only libpayload)
therefore `dma_malloc()` has been removed and `dma_coherent()` has been
moved to architecture specific functions. Any architecture that tries to
use `dma_coherent()` now will get a compile time error. In order to not
break current platforms like mb/google/herobrine which make use of the
commonlib/storage/sdhci.c controller which in turn uses `dma_coherent` a
stub has been added to arch/arm64/dma.c.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I3a7ab0d1ddcc7ce9af121a61b4d4eafc9e563a8a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77969
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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PMP (Physical Memory Protection) is a feature of the RISC-V
Privileged Architecture spec, that allows defining region(s) of
the address space to be protected in a variety of ways: ranges
for M mode can be protected against access from lower privilege
levels, and M mode can be locked out of accessig to memory
reserved for lower privilege levels. Limits on Read, Write, and
Execute are allowed. In coreboot, we protect against Write and
Execute of PMP code from lower levels, but allow Reading, so as
to ease data structure access. PMP is not a security boundary,
it is an accident prevention device.
PMP is used here to protect persistent ramstage code that is
used to support SBI, e.g. printk and some data structures. It
also protects the SBI stacks. Note that there is one stack per
hart. There are 512- and 1024-hart SoC's being built today, so
the stack should be kept small.
PMP is not a general purpose protection mechanism and it is easy
to get around it. For example, S mode can stage a DMA that
overwrites all the M mode code. PMP is, rather, a way to avoid
simple accidents. It is understood that PMP depends on proper OS
behavior to implement true SBI security (personal conversation
with a RISC-V architect). Think of PMP as "Protection Minus
Protection".
PMP is also a very limited resource, as defined in the
architecture. This language is instructive: "PMP entries are
described by an 8-bit configuration register and one XLEN-bit
address register. Some PMP settings additionally use the address
register associated with the preceding PMP entry. Up to 16 PMP
entries are supported. If any PMP entries are implemented, then
all PMP CSRs must be implemented, but all PMP CSR fields are
WARL and may be hardwired to zero. PMP CSRs are only accessible
to M-mode."
In other words if you implement PMP even a little, you have to
impelement it all; but you can implement it in part by simply
returning 0 for a pmpcfg. Also, PMP address registers (pmpaddr)
don't have to implement all the bits. On a SiFive FU740, for
example, PMP only implements bits 33:0, i.e. a 34 bit address.
PMPs are just packed with all kinds of special cases. There are
no requirements that you read back what you wrote to the pmpaddr
registers. The earlier PMP code would die if the read did not
match the write, but, since pmpaddr are WARL, that was not
correct. An SoC can just decide it only does 4096-byte
granularity, on TOR PMP types, and that is your problem if you
wanted finer granulatiry. SoC's don't have to implement all the
high order bits either.
And, to reiterate, there is no requirement about which of the pmpcfg
are implemented. Implementing just pmpcfg15 is allowed.
The coreboot SBI code was written before PMP existed. In order
for coreboot SBI code to work, this patch is necessary.
With this change, a simple S-mode payload that calls SBI putchar
works:
1:
li a7, 1
li a0, 48
ecall
j 1b
Without this change, it will not work.
Getting this to build on RV32 required changes to the API,
as it was incorrect. In RV32, PMP entries are 34 bits.
Hence, the setup_pmp needed to accept u64. So,
uinptr_t can not be used, as on 32 bits they are
only 32 bit numbers. The internal API uses uintptr_t,
but the exported API uses u64, so external code
does not have to think about right shifts on base
and size.
Errors are detected: an error in base and size will result
in a BIOS_EMERG print, but not a panic.
Boots not bricks if possible.
There are small changes to the internal API to reduce
stack pressure: there's no need to have two pmpcfg_t
on the stack when one will do.
TEST: Linux now boots partly on the SiFive unmatched. There are
changes in flight on the coreboot SBI that will allow Linux to
boot further, but they are out of scope for this patch.
Currently, clk_ignore_unused is required, this requires a
separate patch.
Change-Id: I6edce139d340783148cbb446cde004ba96e67944
Signed-off-by: Ronald G Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81153
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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typedefs violate our coding-style
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: Id51eda53b6b53ed2cc66c0339c03c855c12c1bd8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81124
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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Current version of qemu raise an exception when accessing invalid
memory. Modify the probing code to temporary redirect the exception
handler like on ARM platform.
Also move saving of the stack frame out to trap_util.S to have all at
the same place for a future rewrite.
TEST=boots to ramstage
Change-Id: I25860f688c7546714f6fdbce8c8f96da6400813c
Signed-off-by: Philipp Hug <philipp@hug.cx>
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36486
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This adds an opensbi linker macro for easier integration into
memlayout.ld linker scripts.
Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: I4f138de685c6bfb3cdbf79d63787eb0c5aab8590
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77974
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Without this it would use the exception handler from the previous
stage.
Change-Id: I79d875aca6cd0cffe482e4ebb5f388af0adf6aed
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68840
Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Clang complains about the stack pointer register variable being
uninitialized. This can remediated by making the variable global. Change
the variable name to be more unambiguous.
Change-Id: I24602372833aa9d413bf396853b223263fd873ed
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74570
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Daniel Maslowski <info@orangecms.org>
Reviewed-by: Felix Singer <service+coreboot-gerrit@felixsinger.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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"extern" is automatically implied with function declaration.
Change-Id: Ic40218acab5a009621b6882faacfcac800aaf0b9
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71890
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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The header file `rules.h` is automatically included in the build by the
top level makefile using the command:
`-include src/soc/intel/common/block/scs/early_mmc.c`.
Similar to `config.h` and 'kconfig.h`, this file does not need to be
included manually, so remove it.
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I23a1876b4b671d8565cf9b391d3babf800c074db
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67348
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Clang complains about this.
Change-Id: I421d6c5daa373d1537e4ac2243438e7f1f6208d1
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63067
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I58419450dbe34741b4f5b4920f435fdb91e9df22
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61143
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
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The cpu_relax method is defined for x86. This CL adds a no-op method so
that it can be used in common code.
BUG=b:179699789
TEST=none
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Ifcb4546ceb2894eeb37589d0282b7e076d7a4747
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59546
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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The structure and function are not currently used or implemented. x86 is
the only arch that currently implements it. It is currently used for
COOP_MULTITASKING and mp_init.
Keeping around the unused definitions leads to confusion.
BUG=b:179699789
TEST=none
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I0775ef03168f7f9c41b1b05cb8f12724d0458ba5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56572
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Change-Id: Ic86d2e6ad00cf190a2a728280f1a738486cb18c8
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44591
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Stefan thinks they don't add value.
Command used:
sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool)
The exceptions are for:
- crossgcc (patch file)
- gcov (imported from gcc)
- elf.h (imported from GNU's libc)
- nvramtool (more complicated header)
The removed lines are:
- fmt.Fprintln(f, "/* This file is part of the coreboot project. */")
-# This file is part of a set of unofficial pre-commit hooks available
-/* This file is part of coreboot */
-# This file is part of msrtool.
-/* This file is part of msrtool. */
- * This file is part of ncurses, designed to be appended after curses.h.in
-/* This file is part of pgtblgen. */
- * This file is part of the coreboot project.
- /* This file is part of the coreboot project. */
-# This file is part of the coreboot project.
-# This file is part of the coreboot project.
-## This file is part of the coreboot project.
--- This file is part of the coreboot project.
-/* This file is part of the coreboot project */
-/* This file is part of the coreboot project. */
-;## This file is part of the coreboot project.
-# This file is part of the coreboot project. It originated in the
- * This file is part of the coreinfo project.
-## This file is part of the coreinfo project.
- * This file is part of the depthcharge project.
-/* This file is part of the depthcharge project. */
-/* This file is part of the ectool project. */
- * This file is part of the GNU C Library.
- * This file is part of the libpayload project.
-## This file is part of the libpayload project.
-/* This file is part of the Linux kernel. */
-## This file is part of the superiotool project.
-/* This file is part of the superiotool project */
-/* This file is part of uio_usbdebug */
Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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This also drops individual copyright notices, all mentioned authors in
that part of the tree are listed in AUTHORS.
Change-Id: I770c1afd9b68a40ec0e69818f24b5ef3ad4f1d35
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39283
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
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Kill off NO_GLOBAL_MIGRATION finally!
Change-Id: Ieb7d9f5590b3a7dd1fd5c0ce2e51337332434dbd
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37054
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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These platforms return to romstage from FSP only after
already having torn CAR down. A copy of the entire CAR
region is available and discoverable via HOB.
Previously, CBMEM console detected on-the-fly that CAR
migration had happened and relocated cbmem_console_p
accoringlin with car_sync_var(). However, if the CAR_GLOBAL
pointing to another object inside CAR is a relative offset
instead, we have a more generic solution that can be used
with timestamps code as well.
Change-Id: Ica877b47e68d56189e9d998b5630019d4328a419
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35140
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: I9dbf0fc14516f766fd164c7308906456f2865e89
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34982
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Id8918f40572497b068509b5d5a490de0435ad50b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34921
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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Call OpenSBI in M-Mode and use it to set up SBI and to lockdown the
platform. It will also jump to the specified payload when done.
This behaviour is similar to BL31 on aarch31.
The payload is 41KiB in size on qemu.
Tested on qemu-riscv:
Required to boot a kernel as OpenSBI's instruction emulation feature
is required on that virtual machine.
Tested on SiFive/unleashed:
The earlycon is working. No console after regular serial driver
should take over, which might be related to kernel config.
Change-Id: I2a178595bd2aa2e1f114cbc69e8eadd46955b54d
Signed-off-by: Xiang Wang <merle@hardenedlinux.org>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32394
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
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There are only minimal differences between the architecture specific
stdint.h implementations, so let's tidy them up and merge them together
into a single file. In particular,
- Use 'unsigned long' for uintptr_t. This was already the case for x86
and riscv, while arm and mips used 'unsigned int', and arm64 and ppc64
used 'unsigned long long'. This change allows using a single integer
type for uintptr_t across all architectures, and brings it into
consistency with the rest of the code base, which generally uses
'unsigned long' for memory addresses anyway. This change required
fixing several assumptions about integer types in the arm code.
- Use _Bool as the boolean type. This is a specialized boolean type that
was introduced in C99, and is preferrable over hacking booleans
using integers. romcc sadly does not support _Bool, so for that we
stick with the old uint8_t.
- Drop the least and fast integer types. They aren't used
anywhere in the code base and are an unnecessary maintenance burden.
Using the standard fixed width types is essentially always better anyway.
- Drop the UINT64_C() macro. It also isn't used anywhere and doesn't
provide anything that a (uint64_t) cast doesn't.
- Implement the rest of the MIN and MAX numerical limits.
- Use static assertions to check that the integer widths are correct.
Change-Id: I6b52f37793151041b7bdee9ec3708bfad69617b2
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34075
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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Change-Id: Iabe390963bcbeb9ec6016faa8312d101431942da
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31976
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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This patch is a raw application of
find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g'
Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Change-Id: Ie32f1d43168c277be46cdbd7fbfa2445d9899689
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31699
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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* Adding separate targets for 32bit and 64bit qemu
* Using the riscv64 toolchain for 32bit builds requires setting -m elf32lriscv
* rv32/rv64 is currently configured with ARCH_RISCV_RV32/RV64 and not per stage.
This should probably be changed later.
TEST=Boots to "Payload not loaded." on 32bit qemu using the following commands:
util/riscv/make-spike-elf.sh build/coreboot.rom build/coreboot.elf
qemu-system-riscv32 -M virt -m 1024M -nographic -kernel build/coreboot.elf
Change-Id: I35e59b459d1770df10b51fe9e77dcc474d7c75a0
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/c/31253
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
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1. Simplify payload code and convert it to C
2. Save the FDT pointer to HLS (hart-local storage).
3. Don't use mscratch to pass FDT pointer as it is used for exception handling.
Change-Id: I32bf2a99e07a65358a7f19b899259f0816eb45e8
Signed-off-by: Xiang Wang <wxjstz@126.com>
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/c/31179
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Ia7f409ebc7e50383a7e445ef8806953347501dab
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/c/30175
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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SBI is runtime service for OS. For an introduction, please refer to
https://github.com/riscv/riscv-sbi-doc/blob/master/riscv-sbi.md
Change-Id: Ib6c1f21d2f085f02208305dc4e3a0f970d400c27
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/28096
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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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>
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Change-Id: I6a9d71e69ed9230b92f0f330875515a5df29fc06
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29312
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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These codes are written by me based on the privileged instruction set.
I tested it by qemu/riscv-probe.
Change-Id: I2e9e0c94e6518f63ade7680a3ce68bacfae219d4
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/28569
Reviewed-by: Philipp Hug <philipp@hug.cx>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Its spreading copies got out of sync. And as it is not a standard header
but used in commonlib code, it belongs into commonlib. While we are at
it, always include it via GCC's `-include` switch.
Some Windows and BSD quirk handling went into the util copies. We always
guard from redefinitions now to prevent further issues.
Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Use of device_t is deprecated.
Change-Id: If52de0d87b02419090b29a7cf1952905d3f975f6
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28691
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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Make it uniform as other architectures also include it in io.h
Change-Id: I62c2d909c703f01cdaabdaaba344f82b6746f094
Signed-off-by: Philipp Hug <philipp@hug.cx>
Reviewed-on: https://review.coreboot.org/28601
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Add a __always_inline macro that wraps __attribute__((always_inline))
and replace current users with the macro, excluding files under
src/vendorcode.
Change-Id: Ic57e474c1d2ca7cc0405ac677869f78a28d3e529
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/28587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@google.com>
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Support for more situations: floating point, compressed instructions,
etc. Add support for redirect exception to S-Mode.
Change-Id: I9983d56245eab1d458a84cb1432aeb805df7a49f
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27972
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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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>
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RAMSTAGE will revoke CAR/scratchpad, so stack and exception handling
needs to be moved to ddr memory. So add a assembly file to do this.
Change-Id: I58aa6ff911f385180bad6e026d3c3eace846e37d
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/28384
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Highest two bits of misa can be used to check machine length. Add code
to support this.
Change-Id: I3bab301d38ea8aabf2c70437e179287814298b25
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27770
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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Add spin lock support for riscv.
Change-Id: I7e93fb8b35c4452f0fe3f7f4bcc6f7aa4e042451
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27356
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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Must to set MXR, when needs to read the page which is execution-only.
So make this change.
Change-Id: I19519782fe791982a8fbd48ef33b5a92a3c48bfc
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/28394
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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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>
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These RISC-V ABIs defined by GCC : ilp32 ilp32d ilp32f lp64 lp64d lp64f.
Through this we know that the length of the long's bit is equal to pointer.
So update this code. This's more flexible.
Change-Id: I16e1a2c12c6034df75dc360b65acb1b6affec49b
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27768
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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cache_sync_instructions() has been superseded by
arch_program_segment_loaded() and friends for a while. There are no uses
in common code anymore, so let's remove it from <arch/cache.h> for all
architectures.
arm64 still has an implementation and one reference, but they are not
really needed since arch_program_segment_loaded() does the same thing
already. Remove them.
Leave it in arm(32) since there are several references (including in SoC
code) that I don't feel like tracking down and testing right now.
Change-Id: I6b776ad49782d981d6f1ef0a0e013812cf408524
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/27879
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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When I tried to compile the RISC-V code (202e7d4f3c), I found some errors:
`PRIu64` is undefined
src/arch/riscv/timestamp.c does not exist
Currently RISC-V does not have the implementation and use of timestamp,
so I temporarily delete the code related to timestamp in the Makefile.
And define PRIu64.
Change-Id: I7f1a0793113bce7c1411e39f102cf20dbadda5d6
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27543
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Replicate directory layout from x86 for SMP.
Change-Id: I27aee55f24d96ba9e7d8f2e6653f6c9c5e85c66a
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27355
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Add support to check ISA extension for RISC-V.
Change-Id: I5982fb32ed1dd435059edc6aa0373bffa899e160
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27410
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Philipp Hug <philipp@hug.cx>
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GCC pre-defined some macros for detecting ISA extensions.
We should use these macros to detect ISA features.
Change-Id: I5782cdd1bf64b0161c58d789f46389dccfe44475
Signed-off-by: XiangWang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/27300
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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RISC-V doesn't set up page tables anymore, since commit b26759d703
("arch/riscv: Don't set up virtual memory").
Change-Id: Id1e759b63fb0bc88ab256994d3849d16814affa0
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/25701
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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CSRs are XLEN bits wide (i.e. the same width as general purpose
registers), so size_t seems a little more correct than int.
This change doesn't affect functionality because MSTATUS_MPRV already
fits in 31 bits.
Change-Id: I003c1b88b4493681dc9b6178ac785be330203ef5
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/25625
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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RISC-V does not have the kind of I/O space that x86 has. Other
architectures tend to leave out these definitions as well.
Change-Id: I7328dae1f1fa4ef8772750244a0b11a3fa5aa88f
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/25566
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
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Update encoding.h to the version shipped with spike commit
0185d36 ("Merge pull request #165 from riscv/small_progbuf"),
and copy the license header from the LICENSE file.
Change-Id: I517042e5865986e88a589dc8623745f8d584d6b8
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/23773
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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The RISC-V boot protocol foresees that at every stage boundary (bootrom
to boot loader, boot loader -> OS), register a0 contains the Hart ID and
a1 contains the physical address of the Flattened Device Tree that the
stage shall use.
As a first step, pass the bootrom-provided FDT to the payload,
unmodified.
Change-Id: I468bc64a47153d564087235f1c7e2d10e3d7a658
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/23797
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Due to changes in the RISC-V Privileged Architecture specification,
Linux can now be started in physical memory and it will setup its own
page tables.
Thus we can delete most of virtual_memory.c.
Change-Id: I4e69d15f8ee540d2f98c342bc4ec0c00fb48def0
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/23772
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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This Supervisor Binary Interface, which is based on a page of code
that's provided to operating systems by the M-mode software, has been
superseded by a different (currently not really documented) SBI, which
is based on directly executing ECALLs instructions. Thus some of our
code becomes obsolete. Just rip it out until we implement the new SBI.
Change-Id: Iec9c20b750f39a2b8f1553e25865bbf150605a6d
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/22593
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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There is currently no case where a struct cpu_device_id instance needs
to be modified. Thus, declare all instances as const.
Change-Id: I5ec7460b56d75d255b3451d76a46df76a51d6365
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/22526
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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This fixes a case of mstatus corruption, where GCC generated code that
used the same register for the mprv bit and the result.
GCC inline assembly register modifiers are documented here:
https://gcc.gnu.org/onlinedocs/gcc/Modifiers.html
Change-Id: I2c563d171892c2e22ac96b34663aa3965553ceb3
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/21688
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: I3dc12feefe5f0762e27d2ad0234371e91313c847
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/21929
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: Iaf0cb241f0eb4de241f0983c0b32dbcc28f96480
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/21342
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: Id9846ceb714dceaea12ea33ce2aa2b8e5bb6f4df
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20728
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
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- Update all symbols to use IS_ENABLED()
- Update non-romcc usage to use 'if' instead of '#if' where it
makes sense.
Change-Id: I5a84414d2d1631e35ac91efb67a0d4c1f673bf85
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20005
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Caching is a very architecture-specific thing, but most architectures
have a cache in general. Therefore it can be useful to have a generic
architecture-independent API to perform simple cache management tasks
from common code.
We have already standardized on the dcache_clean/invalidate naming
scheme that originally comes from ARM in libpayload, so let's just do
the same for coreboot. Unlike libpayload, there are other things than
just DMA coherency we may want to achieve with those functions, so
actually implement them for real even on architectures with
cache-snooping DMA like x86. (In the future, we may find applications
like this in libpayload as well and should probably rethink the API
there... maybe move the current functionality to a separate
dma_map/unmap API instead. But that's beyond scope of this patch.)
Change-Id: I2c1723a287f76cd4118ef38a445339840601aeea
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/19788
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>
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Coverity is detecting 'sp' as a variable which has not been initialized.
This is obviously not correct, so this patch *TRIES* to mark it as false
I'm not positive that this will work because the annotation needs to go
on the line above the error, but this error is inside of a # define.
Does the whole #define count as one line? Can it go on the line
above the #define in the .h file? Does it have to precede every line
where the #define is used? The documentation doesn't make this clear.
Should suppress coverity issues: 1368525 & 1368527
uninit_use: Using uninitialized value sp.
Change-Id: Ibae5e206c4ff47991ea8a11b6b59972b24b71796
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/18247
Tested-by: build bot (Jenkins)
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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The new name and location make more sense:
- The instruction used to call into machine mode isn't called "ecall"
anymore; it's mcall now.
- Having SBI_ in the name is slightly wrong, too: these numbers are not
part of the Supervisor Binary Interface, they are just used to
forward SBI calls (they could be renumbered arbitrarily without
breaking an OS that's run under coreboot).
Also remove mcall_dev_{req,resp} and the corresponding mcall numbers,
which are no longer used.
Change-Id: I76a8cb04e4ace51964b1cb4f67d49cfee9850da7
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/18146
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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SBI calls, as it turned out, were never right.
They did not set the stack correctly on traps.
They were not correctly setting the MIP instead of the SIP
(although this was not really well documented).
On Harvey, we were trying to avoid using them,
and due to a bug in SPIKE, our avoidance worked.
Once SPIKE was fixed, our avoidance broke.
This set of changes is tested and working with Harvey
which, for the first time, is making SBI calls.
It's not pretty and we're going to want to rework
trap_util.S in coming days.
Change-Id: Ibef530adcc58d33e2c44ff758e0b7d2acbdc5e99
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/18097
Tested-by: build bot (Jenkins)
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RISCV requires that timer interrupts be handled in machine
mode and delegated as necessary. Also you can only reset the
timer interrupt by writing to mtimecmp. Further, you must
write a number > mtime, not just != mtime. This rather clumsy
situation requires that we write some value into the future
into mtimecmp lest we never be able to leave machine mode as
the interrupt either is not cleared or instantly reoccurs.
This current code is tested and works for harvey (Plan 9)
timer interrupts.
Change-Id: I8538d5fd8d80d9347773c638f5cbf0da18dc1cae
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/17807
Tested-by: build bot (Jenkins)
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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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>
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This version of coreboot successfully starts a Harvey (Plan 9) kernel as a payload,
entering main() with no supporting assembly code for startup. The Harvey port
is not complete so it just panics but ... it gets started.
We provide a standard payload function that takes a pointer argument
and makes the jump from machine to supervisor mode;
the days of kernels running in machine mode are over.
We do some small tweaks to the virtual memory code. We temporarily
disable two functions that won't work on some targets as register
numbers changed between 1.7 and 1.9. Once lowrisc catches up
we'll reenable them.
We add the PAGETABLES to the memlayout.ld and use _pagetables in the virtual
memory setup code.
We now use the _stack and _estack from memlayout so we know where things are.
As time goes on maybe we can kill all the magic numbers.
Change-Id: I6caadfa9627fa35e31580492be01d4af908d31d9
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/17058
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
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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>
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Change-Id: I8997e927d82363921a3ff17580b9a575acc1ce16
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/16919
Tested-by: build bot (Jenkins)
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
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Change-Id: Ic1ca6c2e1cd06800d7eb2d00ac0b328987d022ef
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/16434
Tested-by: build bot (Jenkins)
Reviewed-by: Omar Pakker
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Normally machine-mode code operates completely within physical address
space. When emulating less privileged memory accesses (e.g. when the
hardware doesn't support unaligned read/write), it is useful to access
memory through the MMU (and with virtual addresses); this patch
implements this functionality using the MPRV bit.
Change-Id: Ic3b3301f348769faf3ee3ef2a78935dfbcbd15fd
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/16260
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Not all SBI calls are implemented, but it's enough to see a couple dozen
lines of Linux boot output.
It should also be noted that the SBI is still in flux:
https://groups.google.com/a/groups.riscv.org/forum/#!topic/sw-dev/6oNhlW0OFKM
Change-Id: I80e4fe508336d6428ca7136bc388fbc3cda4f1e4
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/16119
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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A new Kconfig option, DEBUG_PRINT_PAGE_TABLES, is added to control this
behaviour. It is currently only available on RISC-V, but other
architectures can use it, too, should the need arise.
Change-Id: I52a863d8bc814ab3ed3a1f141d0a77edc6e4044d
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/16015
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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I copied it from commit e10d2def7d of spike and made sure the copyright
header is still there.
Change-Id: Ie8b56cd2f4855b97d36a112a195866f4ff0feec5
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15832
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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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>
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These functions are not used anywhere.
Change-Id: Ica1f4650e8774dd796be0aff00054f3698087816
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15829
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: If1c63971335a6e2963e01352acfa4bd0c1d86bc2
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15590
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Reviewed-by: Furquan Shaikh <furquan@google.com>
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This function is unused since coreboot starts payloads in machine mode,
and it uses the obsolete eret instruction.
Change-Id: I98d7d0de5a3959821c21a0ba4319efb610fdefde
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15729
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Change-Id: I12de8f82499074f0fbbc1c09210b00c6a9614c1b
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/15146
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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Utilize the architecture dependent coreboot table size value
from <arch/cbconfig.h>
Change-Id: I80d51a5caf7c455b0b47c380e1d79cf522502a4c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14455
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
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Stefan and others have discussed their interest in only
including options in Kconfig that are directly associated
with building a coreboot image. There are variables that
are architecture dependent that are utilized in the
coreboot infrastructure. To meet that goal, introduce
<arch/cbconfig.h> header file which defines variables
for the coreboot infrastructure that are architecture
dependent but utilized in common infrastructure.
Change-Id: Ic4cb9e81bab042797539dce004db0f7ee8526ea6
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/14454
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
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It is silly to have a single header to declare the main()
symbol, however some of the arches provided it while
lib/bootblock.c relied on the arch headers to declare it. Just
move the declaration into its own header file and utilize it.
Change-Id: I743b4c286956ae047c17fe46241b699feca73628
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13681
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins)
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jmp_to_elf_entry() is not defined anywhere. Remove it.
Change-Id: I68f996a735f2ef3dd60cf69f9b72c3f1481cbb55
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13680
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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It's no longer used. Remove it.
Change-Id: Id6f4084ab9d671e94f0eee76bf36fad9a174ef14
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/13678
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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Most of these files are original to coreboot and get the standard
coreboot GPL header.
encoding.h and atomic.h are from the riscv codebase and have their
license.
Change-Id: I32506b0ecf88be2f5794dc1e312a6cd9b2a271ad
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12906
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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When we first added ARM support to coreboot, it was clear that the
bootblock would need to do vastly different tasks than on x86, so we
moved its main logic under arch/. Now that we have several more
architectures, it turns out (as with so many things lately) that x86 is
really the odd one out, and all the others are trying to do pretty much
the same thing. This has already caused maintenance issues as the ARM32
bootblock developed and less-mature architectures were left behind with
old cruft.
This patch tries to address that problem by centralizing that logic
under lib/ for use by all architectures/SoCs that don't explicitly
opt-out (with the slightly adapted existing BOOTBLOCK_CUSTOM option).
This works great out of the box for ARM32 and ARM64. It could probably
be easily applied to MIPS and RISCV as well, but I don't have any of
those boards to test so I'll mark them as BOOTBLOCK_CUSTOM for now and
leave that for later cleanup.
BRANCH=None
BUG=None
TEST=Built Jerry and Falco, booted Oak.
Change-Id: Ibbf727ad93651e388aef20e76f03f5567f9860cb
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/12076
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins)
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It encourages users from writing to the FSF without giving an address.
Linux also prefers to drop that and their checkpatch.pl (that we
imported) looks out for that.
This is the result of util/scripts/no-fsf-addresses.sh with no further
editing.
Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/11888
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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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>
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Trap handling code was bugged in that it loaded in the wrong stack
pointer, overwriting the space the processor uses to talk to its host
for doing device requests. Fix this issue, as well as add support for
handling misaligned loads the same way we handle misaligned stores.
Change-Id: I68ba3a114b7167b3212bb0bed181a7595f0b97d8
Signed-off-by: Thaminda Edirisooriya <thaminda@google.com>
Reviewed-on: http://review.coreboot.org/11620
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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RISCV requires the bios/bootloader to set up an interface by which it
can get information about memory, talk to host devices, etc. Put
implementation for spike in
src/mainboard/emulation/spike-riscv/spike_util.c, and
src/arch/riscv/trap_handler.c
Change-Id: Ie1d5f361595e48fa6cc1fac25485ad623ecdc717
Signed-off-by: Thaminda Edirisooriya <thaminda@google.com>
Reviewed-on: http://review.coreboot.org/11368
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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Execution in supervisor level code in RISCV requires early setup of
virtual memory. Add initialization calls in
src/arch/riscv/virtual_memory.c to implement the required page table
setup, and helper functions to use when jumping to the payload correctly
in riscv.
Change-Id: I46e080e0ee8dc13277d567dcd4bf0f61a4507b76
Signed-off-by: Thaminda Edirisooriya <thaminda@google.com>
Reviewed-on: http://review.coreboot.org/11369
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
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