// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2015, Bin Meng */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void quark_setup_mtrr(void) { u32 base, mask; int i; disable_caches(); /* mark the VGA RAM area as uncacheable */ msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_A0000, MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE)); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_B0000, MTRR_FIX_TYPE(MTRR_TYPE_UNCACHEABLE)); /* mark other fixed range areas as cacheable */ msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_00000, MTRR_FIX_TYPE(MTRR_TYPE_WRBACK)); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_64K_40000, MTRR_FIX_TYPE(MTRR_TYPE_WRBACK)); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_80000, MTRR_FIX_TYPE(MTRR_TYPE_WRBACK)); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_FIX_16K_90000, MTRR_FIX_TYPE(MTRR_TYPE_WRBACK)); for (i = MTRR_FIX_4K_C0000; i <= MTRR_FIX_4K_FC000; i++) msg_port_write(MSG_PORT_HOST_BRIDGE, i, MTRR_FIX_TYPE(MTRR_TYPE_WRBACK)); /* variable range MTRR#0: ROM area */ mask = ~(CONFIG_SYS_MONITOR_LEN - 1); base = CONFIG_TEXT_BASE & mask; msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ROM), base | MTRR_TYPE_WRBACK); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ROM), mask | MTRR_PHYS_MASK_VALID); /* variable range MTRR#1: eSRAM area */ mask = ~(ESRAM_SIZE - 1); base = CONFIG_ESRAM_BASE & mask; msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYBASE(MTRR_VAR_ESRAM), base | MTRR_TYPE_WRBACK); msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_VAR_PHYMASK(MTRR_VAR_ESRAM), mask | MTRR_PHYS_MASK_VALID); /* enable both variable and fixed range MTRRs */ msg_port_write(MSG_PORT_HOST_BRIDGE, MTRR_DEF_TYPE, MTRR_DEF_TYPE_EN | MTRR_DEF_TYPE_FIX_EN); enable_caches(); } static void quark_setup_bars(void) { /* GPIO - D31:F0:R44h */ qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GBA, CONFIG_GPIO_BASE | IO_BAR_EN); /* ACPI PM1 Block - D31:F0:R48h */ qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_PM1BLK, CONFIG_ACPI_PM1_BASE | IO_BAR_EN); /* GPE0 - D31:F0:R4Ch */ qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_GPE0BLK, CONFIG_ACPI_GPE0_BASE | IO_BAR_EN); /* WDT - D31:F0:R84h */ qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_WDTBA, CONFIG_WDT_BASE | IO_BAR_EN); /* RCBA - D31:F0:RF0h */ qrk_pci_write_config_dword(QUARK_LEGACY_BRIDGE, LB_RCBA, CONFIG_RCBA_BASE | MEM_BAR_EN); /* ACPI P Block - Msg Port 04:R70h */ msg_port_write(MSG_PORT_RMU, PBLK_BA, CONFIG_ACPI_PBLK_BASE | IO_BAR_EN); /* SPI DMA - Msg Port 04:R7Ah */ msg_port_write(MSG_PORT_RMU, SPI_DMA_BA, CONFIG_SPI_DMA_BASE | IO_BAR_EN); /* PCIe ECAM */ msg_port_write(MSG_PORT_MEM_ARBITER, AEC_CTRL, CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN); msg_port_write(MSG_PORT_HOST_BRIDGE, HEC_REG, CONFIG_PCIE_ECAM_BASE | MEM_BAR_EN); } static void quark_pcie_early_init(void) { /* * Step1: Assert PCIe signal PERST# * * The CPU interface to the PERST# signal is platform dependent. * Call the board-specific codes to perform this task. */ board_assert_perst(); /* Step2: PHY common lane reset */ msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_PHY_LANE_RST); /* wait 1 ms for PHY common lane reset */ mdelay(1); /* Step3: PHY sideband interface reset and controller main reset */ msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_PHY_SB_RST | PCIE_CTLR_MAIN_RST); /* wait 80ms for PLL to lock */ mdelay(80); /* Step4: Controller sideband interface reset */ msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_SB_RST); /* wait 20ms for controller sideband interface reset */ mdelay(20); /* Step5: De-assert PERST# */ board_deassert_perst(); /* Step6: Controller primary interface reset */ msg_port_alt_setbits(MSG_PORT_SOC_UNIT, PCIE_CFG, PCIE_CTLR_PRI_RST); /* Mixer Load Lane 0 */ msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L0, (1 << 6) | (1 << 7)); /* Mixer Load Lane 1 */ msg_port_io_clrbits(MSG_PORT_PCIE_AFE, PCIE_RXPICTRL0_L1, (1 << 6) | (1 << 7)); } static void quark_usb_early_init(void) { /* The sequence below comes from Quark firmware writer guide */ msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_GLOBAL_PORT, 1 << 1, (1 << 6) | (1 << 7)); msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_COMPBG, (1 << 8) | (1 << 9), (1 << 7) | (1 << 10)); msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29); msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL1, 1 << 1); msg_port_alt_clrsetbits(MSG_PORT_USB_AFE, USB2_PLL1, (1 << 3) | (1 << 4) | (1 << 5), 1 << 6); msg_port_alt_clrbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 29); msg_port_alt_setbits(MSG_PORT_USB_AFE, USB2_PLL2, 1 << 24); } static void quark_thermal_early_init(void) { /* The sequence below comes from Quark firmware writer guide */ /* thermal sensor mode config */ msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1, (1 << 3) | (1 << 4) | (1 << 5), 1 << 5); msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG1, (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11) | (1 << 12), 1 << 9); msg_port_alt_setbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 14); msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 17); msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG1, 1 << 18); msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG2, 0xffff, 0x011f); msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff, 0x17); msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG3, (1 << 8) | (1 << 9), 1 << 8); msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG3, 0xff000000); msg_port_alt_clrsetbits(MSG_PORT_SOC_UNIT, TS_CFG4, 0x7ff800, 0xc8 << 11); /* thermal monitor catastrophic trip set point (105 celsius) */ msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff, 155); /* thermal monitor catastrophic trip clear point (0 celsius) */ msg_port_clrsetbits(MSG_PORT_RMU, TS_TRIP, 0xff0000, 50 << 16); /* take thermal sensor out of reset */ msg_port_alt_clrbits(MSG_PORT_SOC_UNIT, TS_CFG4, 1 << 0); /* enable thermal monitor */ msg_port_setbits(MSG_PORT_RMU, TS_MODE, 1 << 15); /* lock all thermal configuration */ msg_port_setbits(MSG_PORT_RMU, RMU_CTRL, (1 << 5) | (1 << 6)); } static void quark_enable_legacy_seg(void) { msg_port_setbits(MSG_PORT_HOST_BRIDGE, HMISC2, HMISC2_SEGE | HMISC2_SEGF | HMISC2_SEGAB); } int arch_cpu_init(void) { int ret; post_code(POST_CPU_INIT); ret = x86_cpu_init_f(); if (ret) return ret; /* * Quark SoC does not support MSR MTRRs. Fixed and variable range MTRRs * are accessed indirectly via the message port and not the traditional * MSR mechanism. Only UC, WT and WB cache types are supported. */ quark_setup_mtrr(); /* * Quark SoC has some non-standard BARs (excluding PCI standard BARs) * which need be initialized with suggested values */ quark_setup_bars(); /* Initialize USB2 PHY */ quark_usb_early_init(); /* Initialize thermal sensor */ quark_thermal_early_init(); /* Turn on legacy segments (A/B/E/F) decode to system RAM */ quark_enable_legacy_seg(); return 0; } /* * Initialize PCIe controller * * Quark SoC holds the PCIe controller in reset following a power on. * U-Boot needs to release the PCIe controller from reset. The PCIe * controller (D23:F0/F1) will not be visible in PCI configuration * space and any access to its PCI configuration registers will cause * system hang while it is held in reset. */ EVENT_SPY_SIMPLE(EVT_DM_POST_INIT_F, quark_pcie_early_init); int checkcpu(void) { return 0; } int print_cpuinfo(void) { post_code(POST_CPU_INFO); return default_print_cpuinfo(); } 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); } 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; } int arch_misc_init(void) { #ifdef CONFIG_ENABLE_MRC_CACHE /* * We intend not to check any return value here, as even MRC cache * is not saved successfully, it is not a severe error that will * prevent system from continuing to boot. */ mrccache_save(); #endif /* Assign a unique I/O APIC ID */ io_apic_set_id(1); return 0; } void board_final_init(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); /* Lock HMBOUND for security */ msg_port_setbits(MSG_PORT_HOST_BRIDGE, HM_BOUND, HM_BOUND_LOCK); return; }