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lib: sbi_ecall: Add Kconfig option for each extension
For each SBI extension, we: - Add a Kconfig option for it - Add the extension to sbi_ecall_exts only if the extension is enabled - Add the corresponding sbi_ecall_* object file only if the extension is enabled Special cases are as follows: - The legacy extensions are lumped together as one 'big' extension, as has always been the case in OpenSBI code. - The platform-defined vendor extensions are regarded as one extension. - The Base extension cannot be disabled. - sbi_ecall_replace implements multiple extensions, so it's not easy to avoid linking it in. Enable it always, and use #ifdef to disable/enable individual extensions. Signed-off-by: Vivian Wang <dramforever@live.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org>
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4 changed files with 59 additions and 12 deletions
2
Kconfig
2
Kconfig
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@ -18,6 +18,8 @@ menu "Platform Options"
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source "$(OPENSBI_PLATFORM_SRC_DIR)/Kconfig"
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endmenu
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source "$(OPENSBI_SRC_DIR)/lib/sbi/Kconfig"
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source "$(OPENSBI_SRC_DIR)/lib/utils/Kconfig"
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source "$(OPENSBI_SRC_DIR)/firmware/Kconfig"
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37
lib/sbi/Kconfig
Normal file
37
lib/sbi/Kconfig
Normal file
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@ -0,0 +1,37 @@
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# SPDX-License-Identifier: BSD-2-Clause
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menu "SBI Extension Support"
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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_PMU
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bool "Performance Monitoring Unit 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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endmenu
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@ -16,22 +16,22 @@ libsbi-objs-y += sbi_ecall.o
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libsbi-objs-y += sbi_ecall_exts.o
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# The order of below extensions is performance optimized
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carray-sbi_ecall_exts-y += ecall_time
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carray-sbi_ecall_exts-y += ecall_rfence
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carray-sbi_ecall_exts-y += ecall_ipi
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_TIME) += ecall_time
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_RFENCE) += ecall_rfence
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_IPI) += ecall_ipi
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carray-sbi_ecall_exts-y += ecall_base
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carray-sbi_ecall_exts-y += ecall_hsm
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carray-sbi_ecall_exts-y += ecall_srst
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carray-sbi_ecall_exts-y += ecall_pmu
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carray-sbi_ecall_exts-y += ecall_legacy
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carray-sbi_ecall_exts-y += ecall_vendor
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_HSM) += ecall_hsm
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_SRST) += ecall_srst
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_PMU) += ecall_pmu
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_LEGACY) += ecall_legacy
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carray-sbi_ecall_exts-$(CONFIG_SBI_ECALL_VENDOR) += ecall_vendor
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libsbi-objs-y += sbi_ecall_base.o
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libsbi-objs-y += sbi_ecall_hsm.o
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libsbi-objs-y += sbi_ecall_legacy.o
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libsbi-objs-y += sbi_ecall_pmu.o
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libsbi-objs-$(CONFIG_SBI_ECALL_HSM) += sbi_ecall_hsm.o
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libsbi-objs-$(CONFIG_SBI_ECALL_LEGACY) += sbi_ecall_legacy.o
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libsbi-objs-$(CONFIG_SBI_ECALL_PMU) += sbi_ecall_pmu.o
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libsbi-objs-y += sbi_ecall_replace.o
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libsbi-objs-y += sbi_ecall_vendor.o
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libsbi-objs-$(CONFIG_SBI_ECALL_VENDOR) += sbi_ecall_vendor.o
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libsbi-objs-y += sbi_bitmap.o
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libsbi-objs-y += sbi_bitops.o
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@ -19,6 +19,7 @@
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#include <sbi/sbi_tlb.h>
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#include <sbi/sbi_trap.h>
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#ifdef CONFIG_SBI_ECALL_TIME
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static int sbi_ecall_time_handler(unsigned long extid, unsigned long funcid,
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const struct sbi_trap_regs *regs,
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unsigned long *out_val,
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@ -43,7 +44,9 @@ struct sbi_ecall_extension ecall_time = {
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.extid_end = SBI_EXT_TIME,
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.handle = sbi_ecall_time_handler,
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};
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#endif
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#ifdef CONFIG_SBI_ECALL_RFENCE
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static int sbi_ecall_rfence_handler(unsigned long extid, unsigned long funcid,
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const struct sbi_trap_regs *regs,
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unsigned long *out_val,
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@ -113,7 +116,9 @@ struct sbi_ecall_extension ecall_rfence = {
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.extid_end = SBI_EXT_RFENCE,
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.handle = sbi_ecall_rfence_handler,
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};
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#endif
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#ifdef CONFIG_SBI_ECALL_IPI
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static int sbi_ecall_ipi_handler(unsigned long extid, unsigned long funcid,
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const struct sbi_trap_regs *regs,
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unsigned long *out_val,
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@ -134,7 +139,9 @@ struct sbi_ecall_extension ecall_ipi = {
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.extid_end = SBI_EXT_IPI,
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.handle = sbi_ecall_ipi_handler,
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};
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#endif
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#ifdef CONFIG_SBI_ECALL_SRST
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static int sbi_ecall_srst_handler(unsigned long extid, unsigned long funcid,
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const struct sbi_trap_regs *regs,
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unsigned long *out_val,
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@ -194,3 +201,4 @@ struct sbi_ecall_extension ecall_srst = {
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.handle = sbi_ecall_srst_handler,
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.probe = sbi_ecall_srst_probe,
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};
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#endif
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