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This commit makes Spike usable as QEMU (in fact, those are based on
QEMU examples).
Signed-off-by: Tsukasa OI <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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RISC-V privilege specification does not specify how to encode the event ID.
Therefore, each platform is allowed to customize its own encoding rule.
The common encoding methods are as follow, directly assigning a number to an
event, or every bit in the mphmevent CSR controls one specified event or
mixes the above two methods.
To enable OpenSBI to support the above three encoding methods simultaneously,
this patch repurpose the dt property "riscv,raw-event-to-mhpmcounters". The
"riscv,raw-event-to-mhpmcounters" will describes the one or multiple raw
events that could be counted by a set of counters. But, the column number
of "riscv,raw-event-to-mhpmcounters" is extended from 2 to 3. The 1st column
(64bit) is the ID of the raw events. The 2nd column (64bit) represents a
select_mask now to represent the bits used for event ID encoding.
If a platform directly encodes each raw PMU event as a unique ID,
the value of select_mask will be 0xffffffff_ffffffff.
Signed-off-by: Vincent Chen <[email protected]>
Signed-off-by: Atish Patra<[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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As per the DT schema rules, the prefix should be vendor. As the PMU
properties are generic for all vendors, change the prefix to riscv
instead of pmu.
Reviewed-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Signed-off-by: Atish Patra <[email protected]>
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The T-HEAD PLIC implementation requires setting a delegation bit
to allow access from S-mode. Now that the T-HEAD PLIC has its own
compatible string, set this bit automatically from the PLIC driver,
instead of reaching into the PLIC's MMIO space from another driver.
Signed-off-by: Samuel Holland <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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FW_PIC=y is on by default, but the doc is missing when this was
introduced. Add some description for it.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This updates documentation to describe parameters passed to firmware
from previous booting stage, and corresponding address alignment
requirement.
This also fixes a typo in fw_dynamic.md (it's => its).
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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At present in the rendered platform guide, all instances of <xyz>
are missing. Use < and > to replace <> to make them visible.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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It's riscv-pk, not riskv-pk.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Xiang W <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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SBI PMU extension requires a firmware to be aware of the event to
counter/mhpmevent mappings supported by the hardware. One approach
is to encode that information in the device tree.
Define a device tree binding that allows a hardware to describe
all the PMU mappings required in concise format.
Reviewed-by: Anup Patel <[email protected]>
Signed-off-by: Atish Patra <[email protected]>
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FW_PIC is on by default. Hence no need to explicitly require it.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Fix several places in the docmentation that are missing spaces.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Describe how to debug OpenSBI on QEMU with GDB.
Signed-off-by: Heinrich Schuchardt <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The upstream U-Boot/QEMU have been using generic platform for SiFive
HiFive Unleashed board for some time. Let's document sifive_fu540 as
one of the supported targets for "generic" platform.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Let's sort the platform names in alphabetical order.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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With latest U-Boot upstream (v2021.07 in development), the defconfig
name has been changed to sifive_unleashed_defconfig. Update the doc.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Add description and dts examples for T-HEAD C9xx platforms.
Signed-off-by: Guo Ren <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We could use platform/generic instead, and won't use
platform/thead/c910 again.
Signed-off-by: Guo Ren <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Updates link in platforms documentation to point to the correct
OpenPiton document.
Signed-off-by: hasheddan <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This patch adds domain device tree binding documentation in the
OpenSBI domain support documentation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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fix a typo error in docs/platform/sifive_fu540.md
Signed-off-by: Yuan Li <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add initial documentation for OpenSBI domain support to help
RISC-V platform vendors achieve system-level partitioning.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The FW_PAYLOAD_FDT_PATH compile-time option is replaced by
FW_FDT_PATH compile-time option which is more flexible and
common across all OpenSBI firmwares.
This patch removes FW_PAYLOAD_FDT_PATH and updates related
documentation to use FW_FDT_PATH.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Currently, only FW_PAYLOAD has mechanism to embed external
FDT using FW_PAYLOAD_FDT_PATH compile-time option.
This patch adds a common FW_FDT_PATH compile-time option to
embed external FDT for all OpenSBI firmwares (i.e FW_JUMP,
FW_PAYLOAD, and FW_DYNAMIC).
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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U-Boot v2020.07 release adds SPL support to SiFive HiFive Unleashed.
Update the doc to mention that detailed build instructions are in the
U-Boot doc.
This also adds detailed command line description to show how to boot
U-Boot v2020.07 S-mode payload in the QEMU chapter.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Since QEMU v5.1, if there is no "-bios" option provided, the default
OpenSBI firmware will be loaded by QEMU as the BIOS automatically,
hence to load fw_payload type image, we should explicitly pass the
"-bios" option to QEMU.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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C-Class is a member of the SHAKTI family of processors from Indian
Institute of Technology - Madras(IIT-M).
It is an extremely configurable and commercial-grade 5-stage in-order
core supporting the standard RV64GCSUN ISA extensions.
https://gitlab.com/shaktiproject/cores/c-class/blob/master/README.md
We add OpenSBI support for Shakti C-class SoC.
Signed-off-by: Vijai Kumar K <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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U-Boot now supports loading Linux kernel image via network and storage
media. Thus, we don't need to use a combined payload containing both
U-Boot & Linux kernel image to boot Linux from U-Boot prompt.
Remove the old documentation.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The doxygen config option "USE_MDFILE_AS_MAINPAGE" can be used to set
the main page in doxygen generated pdf. This allows us to remove the
"#mainpage" from the README file which markdown doesn't parse.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Now that no platform is using FW_PAYLOAD_FDT mechanism, we
remove related code from Makefile and related documentation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Doxygen does not support italic text in page title so fix
some of the markdown files accordingly.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Currently, all markdown pages are randomly arranged in table of
contents so to fix this we treat top-level README.md as mainpage
and enable Doxygen TREEVIEW.
Also, there should not be any text before title of a markdown
page so we move project copyright as separate section in top-level
README.md.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add platform requirements document to clarify OpenSBI
expectations from a RISC-V platform.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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The generic platform provides IPI and timer functionality based on
DT node provided in the FDT passed by previous booting stage. This
patch updates generic platform documentation about IPI and timer
expectations.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The generic platform will try to select serial console based on the
stdout-path DT property in /chosen DT node hence we document this.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The links to some of the platforms were missing in platform.md
file hence this patch.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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The OpenSBI generic platform works perfectly fine on the QEMU spike
machine and Spike emulator so let's remove dedicated Spike platform
from OpenSBI.
All Spike platform related documentation in OpenSBI will now suggest
using OpenSBI generic platform.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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The OpenSBI generic platform works perfectly fine on the QEMU virt
machine so let's remove dedicated QEMU virt machine platform from
OpenSBI.
All QEMU virt machine related documentation in OpenSBI will now
suggest using OpenSBI generic platform.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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We add generic FDT based platform support which provides platform
specific functionality based on the FDT passed by previous booting
stage.
By default, the generic FDT platform makes following assumptions:
1. platform FW_TEXT_START is 0x80000000
2. platform features are default
3. platform stack size is default
4. platform has no quirks or work-arounds
The above assumptions (except 1) can be overridden by adding special
platform callbacks which will be called based on the FDT root node
compatible string.
By default, we compile OpenSBI generic platform as follows:
$ make PLATFORM=generic
For a non-standard FW_TEXT_START, we can compile OpenSBI generic
platform as follows:
$ make PLATFORM=generic FW_TEXT_START=<non_standard_text_start>
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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* Nuclei UX600 is a 64-bit RISC-V core developed
by Nuclei System Technology, see https://nucleisys.com/product.php
* The ISA is configurable in hardware on your demand
Signed-off-by: Huaqi Fang <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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OpenPiton is a research platform from Princeton University [1].
"OpenPiton is the world's first open source, general purpose,
multithreaded manycore processor. It is a tiled manycore
framework scalable from one to 1/2 billion cores."
Add OpenSBI support for OpenPiton. As it is based on ariane core,
it reuses the platform code from arine project.
[1]. https://github.com/PrincetonUniversity/openpiton
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The FU540_ENABLED_HART_MASK compile time option was added for initial
bring-up on SiFive Unleashed. This option is redundant now because
disabled_hart_mask is already removed. Based on this rationale, we
remove FU540_ENABLED_HART_MASK compile time option.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Upstream U-Boot now have SMP support and doesn't require any additional
patches for HiFive Unleashed.
Update the documentation.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
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For testing 32-bit SiFive specific drivers with QEMU riscv32, add
32-bit specific FW_JUMP_FDT_ADDR and FW_PAYLOAD_OFFSET.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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- make title underline the same length as the title itself
- satisfy the 80 character per line rule as much as possible
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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- make title underline the same length as the title itself
- put all URLs at the end of the doc
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Remove the unnecessary blank line at the end of the doc.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Various styles fixes including:
- satisfy the 80 character per line rule as much as possible
- make title underline the same length as the title itself
- remove the redundant FPGA (was FPGA FPGA SoC)
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Various styles fixes including:
- satisfy the 80 character per line rule as much as possible
- remove unnecessary spaces between words
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Remove the unnecessary blank line at the end of the doc.
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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