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Oriol Catalan
d936372eab
The per-HART stack size for exception/interrupt handling is currently hardcoded to 8192 bytes in SBI_PLATFORM_DEFAULT_HART_STACK_SIZE. This may not be sufficient for platforms with deeper call stacks (e.g. those enabling additional SBI extensions) or may be wasteful for minimal platforms. Introduce a HART_STACK_SIZE Kconfig option in lib/sbi/Kconfig with a valid range of 8192 to 1048576 bytes and a default of 8192 bytes to preserve existing behavior. The SBI_PLATFORM_DEFAULT_HART_STACK_SIZE macro now resolves to CONFIG_HART_STACK_SIZE, allowing all platforms to benefit from a single configuration knob without any source changes. Signed-off-by: Oriol Catalan <oriol.catalan@openchip.com> Reviewed-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/VI0P192MB3062735A6194BB6DA72083499E002@VI0P192MB3062.EURP192.PROD.OUTLOOK.COM Signed-off-by: Anup Patel <anup@brainfault.org>
90 lines
1.8 KiB
Plaintext
90 lines
1.8 KiB
Plaintext
# SPDX-License-Identifier: BSD-2-Clause
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menu "Generic SBI Support"
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config DEFAULT_HART_STACK_SIZE
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int "Default per-HART stack size (bytes)"
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range 8192 1048576
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default 8192
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config CONSOLE_EARLY_BUFFER_SIZE
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int "Early console buffer size (bytes)"
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default 256
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config ZKR_POLL_BUDGET
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int "Zkr seed polling budget (iterations)"
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default 1000
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help
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Maximum number of iterations to poll CSR_SEED when initializing
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the stack guard variable. The Zkr specification doesn't define
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a time limit on transitioning to ES16 between polls, which
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makes it impossible to tell whether entropy is being
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accumulated slowly or the entropy source is not functioning.
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This also limits the wait time on systems with an event-driven
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entropy source. A successful read doesn't consume a try.
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config SBI_ECALL_TIME
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bool "Timer extension"
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default y
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config SBI_ECALL_RFENCE
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bool "RFENCE extension"
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default y
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config SBI_ECALL_IPI
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bool "IPI extension"
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default y
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config SBI_ECALL_HSM
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bool "Hart State Management extension"
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default y
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config SBI_ECALL_SRST
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bool "System Reset extension"
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default y
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config SBI_ECALL_SUSP
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bool "System Suspend extension"
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default y
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config SBI_ECALL_PMU
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bool "Performance Monitoring Unit extension"
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default y
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config SBI_ECALL_DBCN
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bool "Debug Console extension"
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default y
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config SBI_ECALL_CPPC
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bool "CPPC extension"
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default y
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config SBI_ECALL_FWFT
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bool "Firmware Feature extension"
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default y
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config SBI_ECALL_LEGACY
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bool "SBI v0.1 legacy extensions"
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default y
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config SBI_ECALL_VENDOR
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bool "Platform-defined vendor extensions"
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default y
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config SBI_ECALL_DBTR
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bool "Debug Trigger Extension"
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default y
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config SBIUNIT
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bool "Enable SBIUNIT tests"
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default n
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config SBI_ECALL_SSE
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bool "SSE extension"
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default y
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config SBI_ECALL_MPXY
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bool "MPXY extension"
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default y
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endmenu
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