This commit creates the freedom for boards to do nothing with the whole IRQ stuff on x86 during u-boot.
This is especially important on older systems which have many legacy irq and no ACPI support within BIOS, they get in trouble if, for example, u-boot does mask all the interrupts on a PIC.
Signed-off-by: Hannes Schmelzer oe5hpm@oevsv.at
---
arch/x86/Kconfig | 8 ++++++++ arch/x86/lib/Makefile | 2 +- include/_exports.h | 2 +- 3 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 00b69c6..d2b691f 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -736,6 +736,14 @@ config I8259_PIC slave) interrupt controllers. Include this to have U-Boot set up the interrupt correctly.
+config X86IRQ + bool + default y + help + Provide basic IRQ initialization with dummy handlers and spurious IRQ + catching. Provide also some exported high-level API for standalone + applications (see doc/README.standalone). + config APIC bool default y diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile index 1e8efcc..57cb87d 100644 --- a/arch/x86/lib/Makefile +++ b/arch/x86/lib/Makefile @@ -16,7 +16,7 @@ obj-$(CONFIG_SEABIOS) += coreboot_table.o obj-y += early_cmos.o obj-y += e820.o obj-y += init_helpers.o -obj-y += interrupts.o +obj-$(CONFIG_X86IRQ) += interrupts.o obj-y += lpc-uclass.o obj-y += mpspec.o obj-$(CONFIG_ENABLE_MRC_CACHE) += mrccache.o diff --git a/include/_exports.h b/include/_exports.h index 5416041..39e3e32 100644 --- a/include/_exports.h +++ b/include/_exports.h @@ -13,7 +13,7 @@ EXPORT_FUNC(putc, void, putc, const char) EXPORT_FUNC(puts, void, puts, const char *) EXPORT_FUNC(printf, int, printf, const char*, ...) -#if (defined(CONFIG_X86) && !defined(CONFIG_X86_64)) || defined(CONFIG_PPC) +#if (defined(CONFIG_X86IRQ) && !defined(CONFIG_X86_64)) || defined(CONFIG_PPC) EXPORT_FUNC(irq_install_handler, void, install_hdlr, int, interrupt_handler_t, void*)