Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5241
-gerrit
commit 4b0f4e9f3ab00eed7ebc7b5a811f39cea164d0c8 Author: Vladimir Serbinenko phcoder@gmail.com Date: Sat Feb 15 18:57:17 2014 +0100
acpigen: Add acpigen_write_irq.
Change-Id: Iba52dc2d52b7ac9a65d1d17b43e7204f5ede373e Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/arch/x86/boot/acpigen.c | 15 +++++++++++++++ src/arch/x86/include/arch/acpigen.h | 1 + 2 files changed, 16 insertions(+)
diff --git a/src/arch/x86/boot/acpigen.c b/src/arch/x86/boot/acpigen.c index affc1b8..b203288 100644 --- a/src/arch/x86/boot/acpigen.c +++ b/src/arch/x86/boot/acpigen.c @@ -623,6 +623,21 @@ int acpigen_write_register(acpi_addr_t *addr) return 15; }
+int acpigen_write_irq(u16 mask) +{ + /* + * acpi 4.0 section 6.4.2.6: I/O Port Descriptor + * Byte 0: + * Bit7 : 0 => small item + * Bit6-3: 0100 (0x4) => IRQ port descriptor + * Bit2-0: 010 (0x2) => 2 Bytes long + */ + acpigen_emit_byte(0x22); + acpigen_emit_byte(mask & 0xff); + acpigen_emit_byte((mask >> 8) & 0xff); + return 3; +} + int acpigen_write_io16(u16 min, u16 max, u8 align, u8 len, u8 decode16) { /* diff --git a/src/arch/x86/include/arch/acpigen.h b/src/arch/x86/include/arch/acpigen.h index 9257903..0fe5ebd 100644 --- a/src/arch/x86/include/arch/acpigen.h +++ b/src/arch/x86/include/arch/acpigen.h @@ -63,6 +63,7 @@ int acpigen_write_resourcetemplate_footer(int len); int acpigen_write_mainboard_resource_template(void); int acpigen_write_mainboard_resources(const char *scope, const char *name); int acpigen_emit_eisaid(const char *eisaid); +int acpigen_write_irq(u16 mask);
int get_cst_entries(acpi_cstate_t **);