diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/cpu/quark/quark.c | 64 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-quark/quark.h | 22 |
2 files changed, 86 insertions, 0 deletions
diff --git a/arch/x86/cpu/quark/quark.c b/arch/x86/cpu/quark/quark.c index caa3875cc4..934250b44b 100644 --- a/arch/x86/cpu/quark/quark.c +++ b/arch/x86/cpu/quark/quark.c @@ -223,6 +223,53 @@ void reset_cpu(ulong addr) x86_full_reset(); } +static void quark_pcie_init(void) +{ + u32 val; + + /* PCIe upstream non-posted & posted request size */ + qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_CCFG, + CCFG_UPRS | CCFG_UNRS); + qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_CCFG, + CCFG_UPRS | CCFG_UNRS); + + /* PCIe packet fast transmit mode (IPF) */ + qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MPC2, MPC2_IPF); + qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MPC2, MPC2_IPF); + + /* PCIe message bus idle counter (SBIC) */ + qrk_pci_read_config_dword(QUARK_PCIE0, PCIE_RP_MBC, &val); + val |= MBC_SBIC; + qrk_pci_write_config_dword(QUARK_PCIE0, PCIE_RP_MBC, val); + qrk_pci_read_config_dword(QUARK_PCIE1, PCIE_RP_MBC, &val); + val |= MBC_SBIC; + qrk_pci_write_config_dword(QUARK_PCIE1, PCIE_RP_MBC, val); +} + +static void quark_usb_init(void) +{ + u32 bar; + + /* Change USB EHCI packet buffer OUT/IN threshold */ + qrk_pci_read_config_dword(QUARK_USB_EHCI, PCI_BASE_ADDRESS_0, &bar); + writel((0x7f << 16) | 0x7f, bar + EHCI_INSNREG01); + + /* Disable USB device interrupts */ + qrk_pci_read_config_dword(QUARK_USB_DEVICE, PCI_BASE_ADDRESS_0, &bar); + writel(0x7f, bar + USBD_INT_MASK); + writel((0xf << 16) | 0xf, bar + USBD_EP_INT_MASK); + writel((0xf << 16) | 0xf, bar + USBD_EP_INT_STS); +} + +int arch_early_init_r(void) +{ + quark_pcie_init(); + + quark_usb_init(); + + return 0; +} + int cpu_mmc_init(bd_t *bis) { return pci_mmc_init("Quark SDHCI", mmc_supported, @@ -256,3 +303,20 @@ int arch_misc_init(void) { return pirq_init(); } + +void board_final_cleanup(void) +{ + struct quark_rcba *rcba; + u32 base, val; + + qrk_pci_read_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, &base); + base &= ~MEM_BAR_EN; + rcba = (struct quark_rcba *)base; + + /* Initialize 'Component ID' to zero */ + val = readl(&rcba->esd); + val &= ~0xff0000; + writel(val, &rcba->esd); + + return; +} diff --git a/arch/x86/include/asm/arch-quark/quark.h b/arch/x86/include/asm/arch-quark/quark.h index 5d81976998..eb3afbff1d 100644 --- a/arch/x86/include/asm/arch-quark/quark.h +++ b/arch/x86/include/asm/arch-quark/quark.h @@ -88,6 +88,20 @@ /* 64KiB of RMU binary in flash */ #define RMU_BINARY_SIZE 0x10000 +/* PCIe Root Port Configuration Registers */ + +#define PCIE_RP_CCFG 0xd0 +#define CCFG_UPRS (1 << 14) +#define CCFG_UNRS (1 << 15) +#define CCFG_UNSD (1 << 23) +#define CCFG_UPSD (1 << 24) + +#define PCIE_RP_MPC2 0xd4 +#define MPC2_IPF (1 << 11) + +#define PCIE_RP_MBC 0xf4 +#define MBC_SBIC (3 << 16) + /* Legacy Bridge PCI Configuration Registers */ #define LB_GBA 0x44 #define LB_PM1BLK 0x48 @@ -100,6 +114,14 @@ #define LB_BC 0xd8 #define LB_RCBA 0xf0 +/* USB EHCI memory-mapped registers */ +#define EHCI_INSNREG01 0x94 + +/* USB device memory-mapped registers */ +#define USBD_INT_MASK 0x410 +#define USBD_EP_INT_STS 0x414 +#define USBD_EP_INT_MASK 0x418 + #ifndef __ASSEMBLY__ /* Root Complex Register Block */ |