| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #define __SIMPLE_DEVICE__ |
| |
| #include <arch/io.h> |
| #include <assert.h> |
| #include <cpu/x86/mtrr.h> |
| #include <cpu/x86/cr.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/pci_ops.h> |
| #include <soc/pci_devs.h> |
| #include <soc/ramstage.h> |
| #include <soc/reg_access.h> |
| |
| static uint16_t get_gpe0_address(uint32_t reg_address) |
| { |
| uint32_t gpe0_base_address; |
| |
| /* Get the GPE0 base address */ |
| gpe0_base_address = pci_read_config32(LPC_BDF, R_QNC_LPC_GPE0BLK); |
| ASSERT(gpe0_base_address >= 0x80000000); |
| gpe0_base_address &= B_QNC_LPC_GPE0BLK_MASK; |
| |
| /* Return the GPE0 register address */ |
| return (uint16_t)(gpe0_base_address + reg_address); |
| } |
| |
| static uint32_t *get_gpio_address(uint32_t reg_address) |
| { |
| uint32_t gpio_base_address; |
| |
| /* Get the GPIO base address */ |
| gpio_base_address = pci_read_config32(I2CGPIO_BDF, PCI_BASE_ADDRESS_1); |
| gpio_base_address &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
| ASSERT(gpio_base_address != 0x00000000); |
| |
| /* Return the GPIO register address */ |
| return (uint32_t *)(gpio_base_address + reg_address); |
| } |
| |
| void *get_i2c_address(void) |
| { |
| uint32_t gpio_base_address; |
| |
| /* Get the GPIO base address */ |
| gpio_base_address = pci_read_config32(I2CGPIO_BDF, PCI_BASE_ADDRESS_0); |
| gpio_base_address &= ~PCI_BASE_ADDRESS_MEM_ATTR_MASK; |
| ASSERT(gpio_base_address != 0x00000000); |
| |
| /* Return the GPIO register address */ |
| return (void *)gpio_base_address; |
| } |
| |
| static uint16_t get_legacy_gpio_address(uint32_t reg_address) |
| { |
| uint32_t gpio_base_address; |
| |
| /* Get the GPIO base address */ |
| gpio_base_address = pci_read_config32(LPC_BDF, R_QNC_LPC_GBA_BASE); |
| ASSERT(gpio_base_address >= 0x80000000); |
| gpio_base_address &= B_QNC_LPC_GPA_BASE_MASK; |
| |
| /* Return the GPIO register address */ |
| return (uint16_t)(gpio_base_address + reg_address); |
| } |
| |
| static uint32_t mtrr_index_to_host_bridge_register_offset(unsigned long index) |
| { |
| uint32_t offset; |
| |
| /* Convert from MTRR index to host brigde offset (Datasheet 12.7.2) */ |
| if (index == MTRR_CAP_MSR) |
| offset = QUARK_NC_HOST_BRIDGE_IA32_MTRR_CAP; |
| else if (index == MTRR_DEF_TYPE_MSR) |
| offset = QUARK_NC_HOST_BRIDGE_IA32_MTRR_DEF_TYPE; |
| else if (index == MTRR_FIX_64K_00000) |
| offset = QUARK_NC_HOST_BRIDGE_MTRR_FIX64K_00000; |
| else if ((index >= MTRR_FIX_16K_80000) && (index <= MTRR_FIX_16K_A0000)) |
| offset = ((index - MTRR_FIX_16K_80000) << 1) |
| + QUARK_NC_HOST_BRIDGE_MTRR_FIX16K_80000; |
| else if ((index >= MTRR_FIX_4K_C0000) && (index <= MTRR_FIX_4K_F8000)) |
| offset = ((index - MTRR_FIX_4K_C0000) << 1) |
| + QUARK_NC_HOST_BRIDGE_IA32_MTRR_PHYSBASE0; |
| else if ((index >= MTRR_PHYS_BASE(0)) && (index <= MTRR_PHYS_MASK(7))) |
| offset = (index - MTRR_PHYS_BASE(0)) |
| + QUARK_NC_HOST_BRIDGE_IA32_MTRR_PHYSBASE0; |
| else { |
| printk(BIOS_SPEW, "index: 0x%08lx\n", index); |
| die("Invalid MTRR index specified!\n"); |
| } |
| return offset; |
| } |
| |
| void mcr_write(uint8_t opcode, uint8_t port, uint32_t reg_address) |
| { |
| pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MCR, |
| (opcode << QNC_MCR_OP_OFFSET) |
| | ((uint32_t)port << QNC_MCR_PORT_OFFSET) |
| | ((reg_address & QNC_MCR_MASK) << QNC_MCR_REG_OFFSET) |
| | QNC_MCR_BYTE_ENABLES); |
| } |
| |
| uint32_t mdr_read(void) |
| { |
| return pci_read_config32(MC_BDF, QNC_ACCESS_PORT_MDR); |
| } |
| |
| void mdr_write(uint32_t value) |
| { |
| pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MDR, value); |
| } |
| |
| void mea_write(uint32_t reg_address) |
| { |
| pci_write_config32(MC_BDF, QNC_ACCESS_PORT_MEA, reg_address |
| & QNC_MEA_MASK); |
| } |
| |
| uint32_t port_reg_read(uint8_t port, uint32_t offset) |
| { |
| /* Read the port register */ |
| mea_write(offset); |
| mcr_write(QUARK_OPCODE_READ, port, offset); |
| return mdr_read(); |
| } |
| |
| void port_reg_write(uint8_t port, uint32_t offset, uint32_t value) |
| { |
| /* Write the port register */ |
| mea_write(offset); |
| mdr_write(value); |
| mcr_write(QUARK_OPCODE_WRITE, port, offset); |
| } |
| |
| static CRx_TYPE reg_cpu_cr_read(uint32_t reg_address) |
| { |
| /* Read the CPU CRx register */ |
| switch (reg_address) { |
| case 0: |
| return read_cr0(); |
| |
| case 4: |
| return read_cr4(); |
| } |
| die("ERROR - Unsupported CPU register!\n"); |
| } |
| |
| static void reg_cpu_cr_write(uint32_t reg_address, CRx_TYPE value) |
| { |
| /* Write the CPU CRx register */ |
| switch (reg_address) { |
| default: |
| die("ERROR - Unsupported CPU register!\n"); |
| |
| case 0: |
| write_cr0(value); |
| break; |
| |
| case 4: |
| write_cr4(value); |
| break; |
| } |
| } |
| |
| static uint32_t reg_gpe0_read(uint32_t reg_address) |
| { |
| /* Read the GPE0 register */ |
| return inl(get_gpe0_address(reg_address)); |
| } |
| |
| static void reg_gpe0_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the GPE0 register */ |
| outl(get_gpe0_address(reg_address), value); |
| } |
| |
| static uint32_t reg_gpio_read(uint32_t reg_address) |
| { |
| /* Read the GPIO register */ |
| return *get_gpio_address(reg_address); |
| } |
| |
| static void reg_gpio_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the GPIO register */ |
| *get_gpio_address(reg_address) = value; |
| } |
| |
| uint32_t reg_host_bridge_unit_read(uint32_t reg_address) |
| { |
| /* Read the host bridge register */ |
| mea_write(reg_address); |
| mcr_write(QUARK_OPCODE_READ, QUARK_NC_HOST_BRIDGE_SB_PORT_ID, |
| reg_address); |
| return mdr_read(); |
| } |
| |
| static void reg_host_bridge_unit_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the host bridge register */ |
| mea_write(reg_address); |
| mdr_write(value); |
| mcr_write(QUARK_OPCODE_WRITE, QUARK_NC_HOST_BRIDGE_SB_PORT_ID, |
| reg_address); |
| } |
| |
| uint32_t reg_legacy_gpio_read(uint32_t reg_address) |
| { |
| /* Read the legacy GPIO register */ |
| return inl(get_legacy_gpio_address(reg_address)); |
| } |
| |
| void reg_legacy_gpio_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the legacy GPIO register */ |
| outl(value, get_legacy_gpio_address(reg_address)); |
| } |
| |
| static uint32_t reg_pcie_afe_read(uint32_t reg_address) |
| { |
| /* Read the PCIE AFE register */ |
| mea_write(reg_address); |
| mcr_write(QUARK_OPCODE_IO_READ, QUARK_SC_PCIE_AFE_SB_PORT_ID, |
| reg_address); |
| return mdr_read(); |
| } |
| |
| static void reg_pcie_afe_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the PCIE AFE register */ |
| mea_write(reg_address); |
| mdr_write(value); |
| mcr_write(QUARK_OPCODE_IO_WRITE, QUARK_SC_PCIE_AFE_SB_PORT_ID, |
| reg_address); |
| } |
| |
| uint32_t reg_rmu_temp_read(uint32_t reg_address) |
| { |
| /* Read the RMU temperature register */ |
| mea_write(reg_address); |
| mcr_write(QUARK_OPCODE_READ, QUARK_NC_RMU_SB_PORT_ID, reg_address); |
| return mdr_read(); |
| } |
| |
| static void reg_rmu_temp_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the RMU temperature register */ |
| mea_write(reg_address); |
| mdr_write(value); |
| mcr_write(QUARK_OPCODE_WRITE, QUARK_NC_RMU_SB_PORT_ID, reg_address); |
| } |
| |
| static uint32_t reg_soc_unit_read(uint32_t reg_address) |
| { |
| /* Read the temperature sensor register */ |
| mea_write(reg_address); |
| mcr_write(QUARK_ALT_OPCODE_READ, QUARK_SCSS_SOC_UNIT_SB_PORT_ID, |
| reg_address); |
| return mdr_read(); |
| } |
| |
| static void reg_soc_unit_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the temperature sensor register */ |
| mea_write(reg_address); |
| mdr_write(value); |
| mcr_write(QUARK_ALT_OPCODE_WRITE, QUARK_SCSS_SOC_UNIT_SB_PORT_ID, |
| reg_address); |
| } |
| |
| static uint32_t reg_usb_read(uint32_t reg_address) |
| { |
| /* Read the USB register */ |
| mea_write(reg_address); |
| mcr_write(QUARK_ALT_OPCODE_READ, QUARK_SC_USB_AFE_SB_PORT_ID, |
| reg_address); |
| return mdr_read(); |
| } |
| |
| static void reg_usb_write(uint32_t reg_address, uint32_t value) |
| { |
| /* Write the USB register */ |
| mea_write(reg_address); |
| mdr_write(value); |
| mcr_write(QUARK_ALT_OPCODE_WRITE, QUARK_SC_USB_AFE_SB_PORT_ID, |
| reg_address); |
| } |
| |
| static uint64_t reg_read(struct reg_script_context *ctx) |
| { |
| const struct reg_script *step = ctx->step; |
| uint64_t value = 0; |
| |
| switch (step->id) { |
| default: |
| printk(BIOS_ERR, |
| "ERROR - Unknown register set (0x%08x)!\n", |
| step->id); |
| ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING; |
| return 0; |
| |
| case CPU_CR: |
| ctx->display_prefix = "CPU CR"; |
| value = reg_cpu_cr_read(step->reg); |
| break; |
| |
| case GPE0_REGS: |
| ctx->display_prefix = "GPE0"; |
| value = reg_gpe0_read(step->reg); |
| break; |
| |
| case GPIO_REGS: |
| ctx->display_prefix = "GPIO"; |
| value = reg_gpio_read(step->reg); |
| break; |
| |
| case HOST_BRIDGE: |
| ctx->display_prefix = "Host Bridge"; |
| value = reg_host_bridge_unit_read(step->reg); |
| break; |
| |
| case LEG_GPIO_REGS: |
| ctx->display_prefix = "Legacy GPIO"; |
| value = reg_legacy_gpio_read(step->reg); |
| break; |
| |
| case PCIE_AFE_REGS: |
| ctx->display_prefix = "PCIe AFE"; |
| value = reg_pcie_afe_read(step->reg); |
| break; |
| |
| case RMU_TEMP_REGS: |
| ctx->display_prefix = "RMU TEMP"; |
| value = reg_rmu_temp_read(step->reg); |
| break; |
| |
| case SOC_UNIT_REGS: |
| ctx->display_prefix = "SOC Unit"; |
| value = reg_soc_unit_read(step->reg); |
| break; |
| |
| case USB_PHY_REGS: |
| ctx->display_prefix = "USB PHY"; |
| value = reg_usb_read(step->reg); |
| break; |
| } |
| return value; |
| } |
| |
| static void reg_write(struct reg_script_context *ctx) |
| { |
| const struct reg_script *step = ctx->step; |
| |
| switch (step->id) { |
| default: |
| printk(BIOS_ERR, |
| "ERROR - Unknown register set (0x%08x)!\n", |
| step->id); |
| ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING; |
| return; |
| |
| case CPU_CR: |
| ctx->display_prefix = "CPU CR"; |
| reg_cpu_cr_write(step->reg, step->value); |
| break; |
| |
| case GPE0_REGS: |
| ctx->display_prefix = "GPE0"; |
| reg_gpe0_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case GPIO_REGS: |
| ctx->display_prefix = "GPIO"; |
| reg_gpio_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case HOST_BRIDGE: |
| ctx->display_prefix = "Host Bridge"; |
| reg_host_bridge_unit_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case LEG_GPIO_REGS: |
| ctx->display_prefix = "Legacy GPIO"; |
| reg_legacy_gpio_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case PCIE_AFE_REGS: |
| ctx->display_prefix = "PCIe AFE"; |
| reg_pcie_afe_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case PCIE_RESET: |
| if (ctx->display_features) { |
| ctx->display_prefix = "PCIe reset"; |
| ctx->display_features &= ~REG_SCRIPT_DISPLAY_REGISTER; |
| } |
| mainboard_gpio_pcie_reset(step->value); |
| break; |
| |
| case RMU_TEMP_REGS: |
| ctx->display_prefix = "RMU TEMP"; |
| reg_rmu_temp_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case SOC_UNIT_REGS: |
| ctx->display_prefix = "SOC Unit"; |
| reg_soc_unit_write(step->reg, (uint32_t)step->value); |
| break; |
| |
| case MICROSECOND_DELAY: |
| /* The actual delay is >= the requested delay */ |
| if (ctx->display_features) { |
| /* Higher baud-rates will reduce the impact of |
| * displaying this message |
| */ |
| printk(BIOS_INFO, "Delay %lld uSec\n", step->value); |
| ctx->display_features = REG_SCRIPT_DISPLAY_NOTHING; |
| } |
| udelay(step->value); |
| break; |
| |
| case USB_PHY_REGS: |
| ctx->display_prefix = "USB PHY"; |
| reg_usb_write(step->reg, (uint32_t)step->value); |
| break; |
| } |
| } |
| |
| msr_t soc_msr_read(unsigned int index) |
| { |
| uint32_t offset; |
| union { |
| uint64_t u64; |
| msr_t msr; |
| } value; |
| |
| /* Read the low 32-bits of the register */ |
| offset = mtrr_index_to_host_bridge_register_offset(index); |
| value.u64 = port_reg_read(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, offset); |
| |
| /* For 64-bit registers, read the upper 32-bits */ |
| if ((offset >= QUARK_NC_HOST_BRIDGE_MTRR_FIX64K_00000) |
| && (offset <= QUARK_NC_HOST_BRIDGE_MTRR_FIX4K_F8000)) { |
| offset += 1; |
| value.u64 |= port_reg_read(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, |
| offset); |
| } |
| return value.msr; |
| } |
| |
| void soc_msr_write(unsigned int index, msr_t msr) |
| { |
| uint32_t offset; |
| union { |
| uint32_t u32[2]; |
| msr_t msr; |
| } value; |
| |
| /* Write the low 32-bits of the register */ |
| value.msr = msr; |
| offset = mtrr_index_to_host_bridge_register_offset(index); |
| port_reg_write(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, offset, value.u32[0]); |
| |
| /* For 64-bit registers, write the upper 32-bits */ |
| if ((offset >= QUARK_NC_HOST_BRIDGE_MTRR_FIX64K_00000) |
| && (offset <= QUARK_NC_HOST_BRIDGE_MTRR_FIX4K_F8000)) { |
| offset += 1; |
| port_reg_write(QUARK_NC_HOST_BRIDGE_SB_PORT_ID, offset, |
| value.u32[1]); |
| } |
| } |
| |
| const struct reg_script_bus_entry soc_reg_script_bus_table = { |
| SOC_TYPE, reg_read, reg_write |
| }; |
| |
| REG_SCRIPT_BUS_ENTRY(soc_reg_script_bus_table); |