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We extend the SBI ecall interface header for the SBI SRST extension
recently accepted in SBI specification v0.3-draft.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
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We should only return valid error codes from SBI ecalls as
defined by the RISC-V SBI spec.
To achieve this:
1. We use SBI_Exxxx defines for OpenSBI internal errors with
error values starting from -1000
2. We use SBI_ERR_xxxx defines for errors defined by SBI spec
3. We map some of the SBI_Exxxx defines to SBI_ERR_xxxx defines
which are semantically same
4. We throw a error print and force return error code to
SBI_ERR_FAILED in sbi_ecall_handler() if we see an invalid
error code being returned to S-mode
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
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Cc: Abner Chang <abner.chang@hpe.com>
Signed-off-by: Daniel Schaefer <git@danielschaefer.me>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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This fixes various coding style issues found in the SBI codes.
No functional changes.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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This patch adds support HSM extension. The specification is available
at https://github.com/riscv/riscv-sbi-doc.
It allows to implement hart hotplug and fixed ordered hart booting in
supervisor.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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SBI HSM extension defines possible hart status values in the
specification.
Define all possible status values. Add a helper function to
convert hart state to status because hart states are internal
to OpenSBI only and may not match the status values defined in
the specification.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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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 <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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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 <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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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 <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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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 <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
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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 <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
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Noisy commit, no functional changes.
Generated with an current upstream clang-format and:
clang-format -i $(find . -name \*.[ch])
Signed-off-by: Olof Johansson <olof@lixom.net>
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One of the shortcomings of clang-format is that it doesn't allow
for aligned define tables, which is used for a number of constants.
Add annotation to disable the automatic formatting where needed.
Signed-off-by: Olof Johansson <olof@lixom.net>
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This patch updates copyright header in all files as follows:
1. Makes "SPDX-License-Identifier: BSD-2-Clause" as first line
2. Change copyright year to 2019 for Western Digital
Signed-off-by: Anup Patel <anup.patel@wdc.com>
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Define sbi_ecall_console_puts() using sbi_ecall_console_putchar()
renamed as sbi_ecall_console_putc() and remove the hardcoded version
of the same funtion in the test payload code.
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
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This patch moves all ECALL defines to sbi_ecall_interface.h so
that it can be shared with firmware payloads.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
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