diff options
Diffstat (limited to 'arch/x86/cpu/quark/quark.c')
| -rw-r--r-- | arch/x86/cpu/quark/quark.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/cpu/quark/quark.c b/arch/x86/cpu/quark/quark.c index 46141c434d..4fd686424d 100644 --- a/arch/x86/cpu/quark/quark.c +++ b/arch/x86/cpu/quark/quark.c @@ -7,6 +7,7 @@ #include <mmc.h> #include <asm/io.h> #include <asm/ioapic.h> +#include <asm/irq.h> #include <asm/mrccache.h> #include <asm/mtrr.h> #include <asm/pci.h> @@ -313,12 +314,37 @@ static void quark_usb_init(void) writel((0xf << 16) | 0xf, bar + USBD_EP_INT_STS); } +static void quark_irq_init(void) +{ + struct quark_rcba *rcba; + u32 base; + + qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base); + base &= ~MEM_BAR_EN; + rcba = (struct quark_rcba *)base; + + /* + * Route Quark PCI device interrupt pin to PIRQ + * + * Route device#23's INTA/B/C/D to PIRQA/B/C/D + * Route device#20,21's INTA/B/C/D to PIRQE/F/G/H + */ + writew(PIRQC, &rcba->rmu_ir); + writew(PIRQA | (PIRQB << 4) | (PIRQC << 8) | (PIRQD << 12), + &rcba->d23_ir); + writew(PIRQD, &rcba->core_ir); + writew(PIRQE | (PIRQF << 4) | (PIRQG << 8) | (PIRQH << 12), + &rcba->d20d21_ir); +} + int arch_early_init_r(void) { quark_pcie_init(); quark_usb_init(); + quark_irq_init(); + return 0; } |