| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <bootstate.h> |
| #include <cpu/amd/msr.h> |
| #include <cpu/x86/smm.h> |
| #include <cpu/x86/msr.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ops.h> |
| #include <amdblocks/amd_pci_util.h> |
| #include <amdblocks/reset.h> |
| #include <amdblocks/acpimmio.h> |
| #include <amdblocks/acpi.h> |
| #include <amdblocks/gpio.h> |
| #include <amdblocks/i2c.h> |
| #include <amdblocks/smi.h> |
| #include <soc/acpi.h> |
| #include <soc/cpu.h> |
| #include <soc/i2c.h> |
| #include <soc/iomap.h> |
| #include <soc/southbridge.h> |
| #include <soc/smi.h> |
| #include <soc/amd_pci_int_defs.h> |
| #include <soc/pci_devs.h> |
| #include <types.h> |
| #include "chip.h" |
| |
| /* |
| * Table of APIC register index and associated IRQ name. Using IDX_XXX_NAME |
| * provides a visible association with the index, therefore helping |
| * maintainability of table. If a new index/name is defined in |
| * amd_pci_int_defs.h, just add the pair at the end of this table. |
| * Order is not important. |
| */ |
| const static struct irq_idx_name irq_association[] = { |
| { PIRQ_A, "INTA#" }, |
| { PIRQ_B, "INTB#" }, |
| { PIRQ_C, "INTC#" }, |
| { PIRQ_D, "INTD#" }, |
| { PIRQ_E, "INTE#" }, |
| { PIRQ_F, "INTF#/GENINT2" }, |
| { PIRQ_G, "INTG#" }, |
| { PIRQ_H, "INTH#" }, |
| { PIRQ_MISC, "Misc" }, |
| { PIRQ_MISC0, "Misc0" }, |
| { PIRQ_MISC1, "Misc1" }, |
| { PIRQ_MISC2, "Misc2" }, |
| { PIRQ_SIRQA, "Ser IRQ INTA" }, |
| { PIRQ_SIRQB, "Ser IRQ INTB" }, |
| { PIRQ_SIRQC, "Ser IRQ INTC" }, |
| { PIRQ_SIRQD, "Ser IRQ INTD" }, |
| { PIRQ_SCI, "SCI" }, |
| { PIRQ_SMBUS, "SMBUS" }, |
| { PIRQ_ASF, "ASF" }, |
| { PIRQ_PMON, "PerMon" }, |
| { PIRQ_SD, "SD" }, |
| { PIRQ_SDIO, "SDIO" }, |
| { PIRQ_CIR, "CIR" }, |
| { PIRQ_GPIOA, "GPIOa" }, |
| { PIRQ_GPIOB, "GPIOb" }, |
| { PIRQ_GPIOC, "GPIOc" }, |
| { PIRQ_SATA, "SATA" }, |
| { PIRQ_EMMC, "eMMC" }, |
| { PIRQ_GPP0, "GPP0" }, |
| { PIRQ_GPP1, "GPP1" }, |
| { PIRQ_GPP2, "GPP2" }, |
| { PIRQ_GPP3, "GPP3" }, |
| { PIRQ_GPIO, "GPIO" }, |
| { PIRQ_I2C0, "I2C0" }, |
| { PIRQ_I2C1, "I2C1" }, |
| { PIRQ_I2C2, "I2C2" }, |
| { PIRQ_I2C3, "I2C3" }, |
| { PIRQ_UART0, "UART0" }, |
| { PIRQ_UART1, "UART1" }, |
| { PIRQ_I2C4, "I2C4" }, |
| { PIRQ_I2C5, "I2C5" }, |
| { PIRQ_UART2, "UART2" }, |
| { PIRQ_UART3, "UART3" }, |
| }; |
| |
| const struct irq_idx_name *sb_get_apic_reg_association(size_t *size) |
| { |
| *size = ARRAY_SIZE(irq_association); |
| return irq_association; |
| } |
| |
| static void fch_clk_output_48Mhz(void) |
| { |
| u32 ctrl; |
| const struct soc_amd_picasso_config *cfg = config_of_soc(); |
| |
| ctrl = misc_read32(MISC_CLK_CNTL1); |
| /* If used external clock source for I2S, disable the internal clock output */ |
| if (cfg->acp_i2s_use_external_48mhz_osc && |
| cfg->common_config.acp_config.acp_pin_cfg == I2S_PINS_I2S_TDM) |
| ctrl &= ~BP_X48M0_OUTPUT_EN; |
| else |
| ctrl |= BP_X48M0_OUTPUT_EN; |
| misc_write32(MISC_CLK_CNTL1, ctrl); |
| } |
| |
| static void sb_rfmux_config_override(void) |
| { |
| u8 port; |
| const struct soc_amd_picasso_config *cfg; |
| |
| cfg = config_of_soc(); |
| |
| for (port = 0; port < USB_PD_PORT_COUNT; port++) { |
| if (cfg->usb_pd_config_override[port].rfmux_override_en) { |
| write32p(USB_PD_PORT_CONTROL + PD_PORT_MUX_OFFSET(port), |
| cfg->usb_pd_config_override[port].rfmux_config |
| | USB_PD_RFMUX_OVERRIDE); |
| } |
| } |
| } |
| |
| static void fch_init_acpi_ports(void) |
| { |
| u32 reg; |
| |
| /* We use some of these ports in SMM regardless of whether or not |
| * ACPI tables are generated. Enable these ports indiscriminately. |
| */ |
| |
| pm_write16(PM_EVT_BLK, ACPI_PM_EVT_BLK); |
| pm_write16(PM1_CNT_BLK, ACPI_PM1_CNT_BLK); |
| pm_write16(PM_TMR_BLK, ACPI_PM_TMR_BLK); |
| pm_write16(PM_GPE0_BLK, ACPI_GPE0_BLK); |
| |
| if (CONFIG(HAVE_SMI_HANDLER)) { |
| /* APMC - SMI Command Port */ |
| pm_write16(PM_ACPI_SMI_CMD, APM_CNT); |
| configure_smi(SMITYPE_SMI_CMD_PORT, SMI_MODE_SMI); |
| |
| /* SMI on SlpTyp requires sending SMI before completion |
| response of the I/O write. */ |
| reg = pm_read32(PM_PCI_CTRL); |
| reg |= FORCE_SLPSTATE_RETRY; |
| pm_write32(PM_PCI_CTRL, reg); |
| |
| /* Disable SlpTyp feature */ |
| reg = pm_read8(PM_RST_CTRL1); |
| reg &= ~SLPTYPE_CONTROL_EN; |
| pm_write8(PM_RST_CTRL1, reg); |
| |
| configure_smi(SMITYPE_SLP_TYP, SMI_MODE_SMI); |
| } else { |
| pm_write16(PM_ACPI_SMI_CMD, 0); |
| } |
| |
| /* Decode ACPI registers and enable standard features */ |
| pm_write8(PM_ACPI_CONF, PM_ACPI_DECODE_STD | |
| PM_ACPI_GLOBAL_EN | |
| PM_ACPI_RTC_EN_EN | |
| PM_ACPI_TIMER_EN_EN); |
| } |
| |
| /* |
| * A-Link to AHB bridge, part of the AMBA fabric. These are internal clocks |
| * and unneeded for Raven/Picasso so gate them to save power. |
| */ |
| static void al2ahb_clock_gate(void) |
| { |
| uint8_t al2ahb_val; |
| uintptr_t al2ahb_base = ALINK_AHB_ADDRESS; |
| |
| al2ahb_val = read8((void *)(al2ahb_base + AL2AHB_CONTROL_CLK_OFFSET)); |
| al2ahb_val |= AL2AHB_CLK_GATE_EN; |
| write8((void *)(al2ahb_base + AL2AHB_CONTROL_CLK_OFFSET), al2ahb_val); |
| al2ahb_val = read8((void *)(al2ahb_base + AL2AHB_CONTROL_HCLK_OFFSET)); |
| al2ahb_val |= AL2AHB_HCLK_GATE_EN; |
| write8((void *)(al2ahb_base + AL2AHB_CONTROL_HCLK_OFFSET), al2ahb_val); |
| } |
| |
| /* configure the general purpose PCIe clock outputs according to the devicetree settings */ |
| static void gpp_clk_setup(void) |
| { |
| const struct soc_amd_picasso_config *cfg = config_of_soc(); |
| |
| /* look-up table to be able to iterate over the PCIe clock output settings */ |
| const uint8_t gpp_clk_shift_lut[GPP_CLK_OUTPUT_COUNT] = { |
| GPP_CLK0_REQ_SHIFT, |
| GPP_CLK1_REQ_SHIFT, |
| GPP_CLK2_REQ_SHIFT, |
| GPP_CLK3_REQ_SHIFT, |
| GPP_CLK4_REQ_SHIFT, |
| GPP_CLK5_REQ_SHIFT, |
| GPP_CLK6_REQ_SHIFT, |
| }; |
| |
| uint32_t gpp_clk_ctl = misc_read32(GPP_CLK_CNTRL); |
| |
| for (int i = 0; i < GPP_CLK_OUTPUT_COUNT; i++) { |
| gpp_clk_ctl &= ~GPP_CLK_REQ_MASK(gpp_clk_shift_lut[i]); |
| /* |
| * The remapping of values is done so that the default of the enum used for the |
| * devicetree settings is the clock being enabled, so that a missing devicetree |
| * configuration for this will result in an always active clock and not an |
| * inactive PCIe clock output. |
| */ |
| switch (cfg->gpp_clk_config[i]) { |
| case GPP_CLK_REQ: |
| gpp_clk_ctl |= GPP_CLK_REQ_EXT(gpp_clk_shift_lut[i]); |
| break; |
| case GPP_CLK_OFF: |
| gpp_clk_ctl |= GPP_CLK_REQ_OFF(gpp_clk_shift_lut[i]); |
| break; |
| case GPP_CLK_ON: |
| default: |
| gpp_clk_ctl |= GPP_CLK_REQ_ON(gpp_clk_shift_lut[i]); |
| } |
| } |
| |
| misc_write32(GPP_CLK_CNTRL, gpp_clk_ctl); |
| } |
| |
| void fch_init(void *chip_info) |
| { |
| i2c_soc_init(); |
| fch_init_acpi_ports(); |
| |
| acpi_pm_gpe_add_events_print_events(); |
| gpio_add_events(); |
| |
| al2ahb_clock_gate(); |
| |
| gpp_clk_setup(); |
| |
| fch_clk_output_48Mhz(); |
| |
| sb_rfmux_config_override(); |
| } |
| |
| void fch_final(void *chip_info) |
| { |
| } |
| |
| /* |
| * Update the PCI devices with a valid IRQ number |
| * that is set in the mainboard PCI_IRQ structures. |
| */ |
| static void set_pci_irqs(void *unused) |
| { |
| /* Write PCI_INTR regs 0xC00/0xC01 */ |
| write_pci_int_table(); |
| |
| /* pirq_data is consumed by `write_pci_cfg_irqs` */ |
| populate_pirq_data(); |
| |
| /* Write IRQs for all devicetree enabled devices */ |
| write_pci_cfg_irqs(); |
| } |
| |
| /* |
| * Hook this function into the PCI state machine |
| * on entry into BS_DEV_ENABLE. |
| */ |
| BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, set_pci_irqs, NULL); |