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/* SPDX-License-Identifier: GPL-2.0-only */
/* TODO: Check if this is still correct */
#include <amdblocks/acpi.h>
#include <amdblocks/acpimmio.h>
#include <amdblocks/amd_pci_util.h>
#include <amdblocks/gpio.h>
#include <amdblocks/smi.h>
#include <assert.h>
#include <bootstate.h>
#include <cpu/x86/smm.h>
#include <amdblocks/i2c.h>
#include <soc/amd_pci_int_defs.h>
#include <soc/iomap.h>
#include <soc/i2c.h>
#include <soc/smi.h>
#include <soc/southbridge.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_HPET_L, "HPET_L" },
{ PIRQ_HPET_H, "HPET_H" },
{ 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_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_UART4, "UART4" },
{ 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)
{
uint32_t ctrl = misc_read32(MISC_CLK_CNTL0);
/* Enable BP_X48M0 Clock Output */
ctrl |= BP_X48M0_OUTPUT_EN;
/* Disable clock output in S0i3 */
ctrl |= BP_X48M0_S0I3_DIS;
misc_write32(MISC_CLK_CNTL0, ctrl);
}
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);
}
/* configure the general purpose PCIe clock outputs according to the devicetree settings */
static void gpp_clk_setup(void)
{
const struct soc_amd_sabrina_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. Only the configuration for the clock outputs
* available on the package is provided via the devicetree; the rest is
* switched off unconditionally.
*/
switch (i < GPP_CLK_OUTPUT_AVAILABLE ? cfg->gpp_clk_config[i] : GPP_CLK_OFF) {
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);
}
static void cgpll_clock_gate_init(void)
{
uint32_t t;
t = misc_read32(MISC_CLKGATEDCNTL);
t |= ALINKCLK_GATEOFFEN;
t |= BLINKCLK_GATEOFFEN;
t |= XTAL_PAD_S0I3_TURNOFF_EN;
t |= XTAL_PAD_S3_TURNOFF_EN;
t |= XTAL_PAD_S5_TURNOFF_EN;
misc_write32(MISC_CLKGATEDCNTL, t);
t = misc_read32(MISC_CGPLL_CONFIGURATION0);
t |= USB_PHY_CMCLK_S3_DIS;
t |= USB_PHY_CMCLK_S0I3_DIS;
t |= USB_PHY_CMCLK_S5_DIS;
misc_write32(MISC_CGPLL_CONFIGURATION0, t);
t = pm_read32(PM_ISACONTROL);
t |= ABCLKGATEEN;
pm_write32(PM_ISACONTROL, t);
}
void fch_init(void *chip_info)
{
i2c_soc_init();
fch_init_acpi_ports();
acpi_pm_gpe_add_events_print_events();
gpio_add_events();
gpp_clk_setup();
fch_clk_output_48Mhz();
cgpll_clock_gate_init();
}
void fch_final(void *chip_info)
{
}
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);
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