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This patch updates OpenSBI version to 0.6 as part of
release preparation.
Signed-off-by: Anup Patel <[email protected]>
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We print MIDELEG and MEDELEG CSRs as part of boot prints so that
boot log shows the interrupts and exceptions delegated to S-mode.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch adds initial platform support Spike emulator.
Signed-off-by: James Clarke <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Bin Meng <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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If a platform requires to perform a tlb full flush, they should set
the tlb_range_flush_limit value to zero. However, corresponding platform
API ignore the value and continue to return the default value.
Add a platform ops to retrieve platform specific tlb range flush limit.
The platform variable becomes redundant in presence of the platform ops.
Take this opportunity to remove the variable as well.
The default is still set to smallest page size in RISC-V (4KB), as there
is no way to figure out a best value for all platforms. Individual platform
should set it to the optimal value for their platform.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This patch factor-out SBI base extension into its own source
for better modularity of SBI implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch factor-out SBI vendor extension into its own source
for better modularity of SBI implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch factor-out SBI replacement extensions (such as RFENCE,
IPI, and TIME) into its own source for better modularity of SBI
implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch factor-out SBI legacy extension into its own source
for better modularity of SBI implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch extends our SBI ecall implementation to allow
dynamic registration of various SBI extensions. Using this
dynamic registration we can break-up SBI ecall implementation
into multiple files and even register experimental/custom
SBI extensions from platform code.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch adds generic and simple list handling APIs adapted
from Xvisor sources.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch drops _fifo from the name of various sbi_tlb_fifo_xyz()
functions because all these functions deal with remote TLB managment
and FIFO is the per-HART data structure used internally by remote
TLB implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch introduces sbi_ipi_event_create/destroy() APIs and
struct sbi_ipi_event_ops for creating/destroying IPI events
at runtime based of event operations.
This new APIs will help platform code and utils code to create
custom IPI events which are not part of generic OpenSBI library.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Instead of directly calling sbi_ipi_send_many(), we introduce
sbi_tlb_fifo_request() for halting a set of HARTs.
This way in future we can assign any IPI event number for remote
FENCE within sbi_tlb.c only.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Instead of directly calling sbi_ipi_send_many(), we introduce
sbi_ipi_send_halt() for halting a set of HARTs.
This way in future we can assign any IPI event number for HART
halting within sbi_ipi.c only.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Instead of directly calling sbi_ipi_send_many(), we introduce
sbi_ipi_send_smode() for injecting S-mode software interrupts.
This way in future we can assign any IPI event number for S-mode
IPIs within sbi_ipi.c only.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The struct sbi_ipi_data is only used in sbi_ipi.c so move it
to sbi_ipi.c from sbi_ipi.h.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch fixes a minor typo in comment for SBI_SCRATCH_SIZE define.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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Add OPENSBI_EXTERNAL_SBI_TYPES macro to allow external definitions of data
types and common macros. Also move some common definitions from sbi_bits.h to sbi_types.h.
Signed-off-by: Abner Chang <[email protected]>
Cc: Leif Lindholm <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We add sbi_init_count() API which provides number of times a
given HART completed init sequence (warmboot/coldboot).
This will be very useful in debugging. With upcoming SBI HSM
extension, it will also help in implementing one-time init
code for each HART.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We improve sbi_system_reboot() an sbi_system_shutdown() by:
1. Calling halt IPI to all harts (except current HART) before
calling platform reboot/shutdown hook.
2. Calling sbi_exit() instead of sbi_hang() in-case platform
reboot/shutdown hook failed.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add an optional platform irqchip exit hook for exit path handling
in sbi_exit() implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add sbi_ipi_exit() API for exit path handling in sbi_exit()
implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We add sbi_timer_exit() API for OpenSBI exit path handling in
sbi_exit() implementation.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch adds system-level early_exit and final_exit APIs
with corresponding platform hooks. These new APIs will be
primarily used by sbi_exit() in OpenSBI exit path.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch adds initial implementation of sbi_exit() API which
can be used to perform OpenSBI exit sequence for current HART.
The sbi_exit() implementation will be further extended by
subsequent patches.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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It is possible to have a CLINT implementation which supports
only 32bit MMIO accesses on RV64 system so this patch extends
our CLINT driver such that platform code can specify whether
CLINT supports 64bit MMIO access.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra<[email protected]>
Reviewed-by: Zong Li <[email protected]>
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The hypervisor specification support hfence calls which can be used
issue tlb flush requests at both level of address translation. Currently,
these requests are issued only via SBI which are defined in v0.2.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Currently, the toolchains do not have support for hfence instruction.
Hence, the instruction are hardcode until we have toolchain support.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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This patch adds new IPI extension which replaces ipi related
v0.1 extensions. This also adds a new API for ipi sending as trap
handling is not necessary in v0.2 SBI IPI related extensions.
It also modifies the IPI sending code which now accepts hart mask as a value
instead of S-mode virtual address. Thus, the caller should set it to exact hart
mask value everytime.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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We just need to distinguish only between FENCE and non FENCE related
IPIs as all of the fence related requests are handled via fifo now.
Remove the unnecessary IPI types related to individual fence types.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Take this opportunity to move the enums to macros as enums make
sbi_ecall_interface.h unusable in assembly files.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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The hypervisor v0.5 spec introduces two new CSRs for both M-mode
and HS-mode which need to be considered when redirecting traps
hence this patch.
Signed-off-by: Anup Patel <[email protected]>
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We have two new trap CSRs namely mtval2 and mtinst when
RISC-V hypervisor extension is available hence we extend
struct sbi_trap_info accordingly.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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With RISC-V H-extension v0.5 draft, we have special support for guest
external interrupts so this patch adds related defines which were
missed-out previously.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
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GCC-9 will throw a warning when using the %s format specifier with a
possible NULL parameter and since -Werror is used, the compilation breaks
for GCC-9.
In function 'sbi_boot_prints',
inlined from 'init_coldboot' at <redacted>/opensbi/lib/sbi/sbi_init.c:107:3,
inlined from 'sbi_init' at <redacted>/opensbi/lib/sbi/sbi_init.c:189:3:
<redacted>/opensbi/lib/sbi/sbi_init.c:56:2: error: '%s' directive argument is null [-Werror=format-overflow=]
56 | sbi_printf("Platform Name : %s\n", sbi_platform_name(plat));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
This is one way to fix this, currently there is nothing in the tree
checking for `sbi_platfrom_name() == NULL` so we can just return "Unknown"
instead of NULL on failure.
Signed-off-by: Martin Pietryka <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Tested-by: David Abdurachmanov <[email protected]>
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Add assertions for misa_extension to prevent incoming illegal
characters.
Signed-off-by: Xiang Wang <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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On some platforms, misa may not be implemented. On such a platform,
reading misa will get 0. At this time, platform is required to
implement a non-standard function to detect the CPU's capabilities.
Therefore, this modification add interfaces for non-standard function.
The MXL field of misa is always at the highest two bits, whether it
is a 32-bit 64-bit or a 128-bit machine. Therefore, this modification
fixes the use of a fixed offset to detect the machine length.
Signed-off-by: Xiang Wang <[email protected]>
Signed-off-by: Anup Patel <[email protected]>
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The out_tcause and out_tval parameters are not sufficient for most
sbi_ecall functions because this will grow in-future when we support
RISC-V hypervisor v0.5 draft. We replace these parameters with out_trap
which is a pointer to struct sbi_trap_info.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The unpriv APIs can be useful to external firmware and out-of-tree
platform support code.
This patch adds "sbi_" prefix to unpriv load/store APIs and rename
struct riscv_unpriv to struct sbi_trap_info everywhere. We also
place struct sbi_trap_info in sbi/sbi_trap.h so that we can use
it for sbi_trap_redirect() as well.
Overall, this patch will make naming of unpriv APIs consistent
with other OpenSBI APIs.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We don't need to set VSSTATUS.MXR bit in get_insn() for
unpriv instruction read because MSTATUS.MXR bit applies
to both "Stage1" and "Stage2" page tables.
This also allows us to remove the "virt" parameter of
get_insn() function.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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We simplify struct unpriv_trap by removing ilen member. This
can be achieved by ensuring that at all unpriv load/store
instructions are 4 bytes long using GCC assembler option.
Additionally, this also reduces few instructions from unpriv
load/store functions.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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It has been reported that link address range of previous booting stage
(such as U-Boot SPL) can overlap the link address rage of FW_DYNAMIC.
This means self-relocation in FW_DYNAMIC can potentially corrupt
previous booting stage if any of the secondary HART enter FW_DYNAMIC
before primary HART.
To tackle this, we add preferred boot HART field (i.e boot_hart) in
struct fw_dyanmic_info. We use this field to force secondary HARTs
into relocation wait loop till preferred/primary boot HART enters
FW_DYNAMIC completes self-relocation. If preferred boot HART is not
available then we fall back to relocation lottery approach.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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The riscv_encoding.h is shared with assembly sources so we use
_UL() and _ULL() for register fields related defines.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch sync-up encoding header with the latest privilege
specifications draft v1.12 and hypervisor specifications draft v0.5.
The MSTATUS.MTL and HSTATUS.STL bits are not present anymore and
will be removed by another patch series for hypervisor v0.5-draft.
Signed-off-by: Anup Patel <[email protected]>
Reviewed-by: Atish Patra <[email protected]>
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This patch updates OpenSBI version to 0.5 as part of
release preparation.
Signed-off-by: Anup Patel <[email protected]>
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SBI v0.2 specification allows vendor extensions and it should be
implemented in a independent of the core sbi library.
Introduce a single platform callback that will let platforms handle
all vendor extensions in platform specific code if they want.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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SBI v0.2 introduces a base specification which is mandatory to
implement for any SBI implementations that is not legacy.
Add support for the base extension.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Current SBI implementation is now considered as version 0.1 and will be
removed/replaced with newer extension/functions in future.
Rename the existing implementations accordingly to be in sync with the
specification.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
Reviewed-by: Zong Li <[email protected]>
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Follow the SBI specification for error codes.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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Test payload uses an SBI call and uses the macros defined in interface
header which is not the correct place to have these definitions.
The interface header file should be used to keep SBI specification
related macros.
Keep all the test payload related code in test itself.
Signed-off-by: Atish Patra <[email protected]>
Reviewed-by: Anup Patel <[email protected]>
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