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Diffstat (limited to 'src/soc/intel/broadwell/pch/lpc.c')
-rw-r--r--src/soc/intel/broadwell/pch/lpc.c677
1 files changed, 677 insertions, 0 deletions
diff --git a/src/soc/intel/broadwell/pch/lpc.c b/src/soc/intel/broadwell/pch/lpc.c
new file mode 100644
index 0000000000..2111913a0e
--- /dev/null
+++ b/src/soc/intel/broadwell/pch/lpc.c
@@ -0,0 +1,677 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <device/pci_ids.h>
+#include <option.h>
+#include <pc80/isa-dma.h>
+#include <pc80/i8259.h>
+#include <device/pci_ops.h>
+#include <arch/ioapic.h>
+#include <acpi/acpi.h>
+#include <acpi/acpi_gnvs.h>
+#include <cpu/x86/smm.h>
+#include <cbmem.h>
+#include <string.h>
+#include <soc/gpio.h>
+#include <soc/iobp.h>
+#include <soc/iomap.h>
+#include <soc/lpc.h>
+#include <soc/nvs.h>
+#include <soc/pch.h>
+#include <soc/pci_devs.h>
+#include <soc/pm.h>
+#include <soc/ramstage.h>
+#include <soc/rcba.h>
+#include <soc/intel/broadwell/pch/chip.h>
+#include <acpi/acpigen.h>
+#include <southbridge/intel/common/rtc.h>
+
+static void pch_enable_ioapic(struct device *dev)
+{
+ u32 reg32;
+
+ /* Assign unique bus/dev/fn for I/O APIC */
+ pci_write_config16(dev, LPC_IBDF,
+ PCH_IOAPIC_PCI_BUS << 8 | PCH_IOAPIC_PCI_SLOT << 3);
+
+ set_ioapic_id(VIO_APIC_VADDR, 0x02);
+
+ /* affirm full set of redirection table entries ("write once") */
+ reg32 = io_apic_read(VIO_APIC_VADDR, 0x01);
+
+ /* PCH-LP has 39 redirection entries */
+ reg32 &= ~0x00ff0000;
+ reg32 |= 0x00270000;
+
+ io_apic_write(VIO_APIC_VADDR, 0x01, reg32);
+
+ /*
+ * Select Boot Configuration register (0x03) and
+ * use Processor System Bus (0x01) to deliver interrupts.
+ */
+ io_apic_write(VIO_APIC_VADDR, 0x03, 0x01);
+}
+
+static void enable_hpet(struct device *dev)
+{
+ size_t i;
+
+ /* Assign unique bus/dev/fn for each HPET */
+ for (i = 0; i < 8; ++i)
+ pci_write_config16(dev, LPC_HnBDF(i),
+ PCH_HPET_PCI_BUS << 8 | PCH_HPET_PCI_SLOT << 3 | i);
+}
+
+/* PIRQ[n]_ROUT[3:0] - PIRQ Routing Control
+ * 0x00 - 0000 = Reserved
+ * 0x01 - 0001 = Reserved
+ * 0x02 - 0010 = Reserved
+ * 0x03 - 0011 = IRQ3
+ * 0x04 - 0100 = IRQ4
+ * 0x05 - 0101 = IRQ5
+ * 0x06 - 0110 = IRQ6
+ * 0x07 - 0111 = IRQ7
+ * 0x08 - 1000 = Reserved
+ * 0x09 - 1001 = IRQ9
+ * 0x0A - 1010 = IRQ10
+ * 0x0B - 1011 = IRQ11
+ * 0x0C - 1100 = IRQ12
+ * 0x0D - 1101 = Reserved
+ * 0x0E - 1110 = IRQ14
+ * 0x0F - 1111 = IRQ15
+ * PIRQ[n]_ROUT[7] - PIRQ Routing Control
+ * 0x80 - The PIRQ is not routed.
+ */
+
+static void pch_pirq_init(struct device *dev)
+{
+ struct device *irq_dev;
+
+ const uint8_t pirq = 0x80;
+
+ pci_write_config8(dev, PIRQA_ROUT, pirq);
+ pci_write_config8(dev, PIRQB_ROUT, pirq);
+ pci_write_config8(dev, PIRQC_ROUT, pirq);
+ pci_write_config8(dev, PIRQD_ROUT, pirq);
+
+ pci_write_config8(dev, PIRQE_ROUT, pirq);
+ pci_write_config8(dev, PIRQF_ROUT, pirq);
+ pci_write_config8(dev, PIRQG_ROUT, pirq);
+ pci_write_config8(dev, PIRQH_ROUT, pirq);
+
+ for (irq_dev = all_devices; irq_dev; irq_dev = irq_dev->next) {
+ u8 int_pin = 0, int_line = 0;
+
+ if (!irq_dev->enabled || irq_dev->path.type != DEVICE_PATH_PCI)
+ continue;
+
+ int_pin = pci_read_config8(irq_dev, PCI_INTERRUPT_PIN);
+
+ switch (int_pin) {
+ case 1: /* INTA# */
+ case 2: /* INTB# */
+ case 3: /* INTC# */
+ case 4: /* INTD# */
+ int_line = pirq;
+ break;
+ }
+
+ if (!int_line)
+ continue;
+
+ pci_write_config8(irq_dev, PCI_INTERRUPT_LINE, int_line);
+ }
+}
+
+static void pch_power_options(struct device *dev)
+{
+ u16 reg16;
+ const char *state;
+ /* Get the chip configuration */
+ const struct soc_intel_broadwell_pch_config *config = config_of(dev);
+ int pwr_on = CONFIG_MAINBOARD_POWER_FAILURE_STATE;
+
+ /* Which state do we want to goto after g3 (power restored)?
+ * 0 == S0 Full On
+ * 1 == S5 Soft Off
+ *
+ * If the option is not existent (Laptops), use Kconfig setting.
+ */
+ get_option(&pwr_on, "power_on_after_fail");
+
+ reg16 = pci_read_config16(dev, GEN_PMCON_3);
+ reg16 &= 0xfffe;
+ switch (pwr_on) {
+ case MAINBOARD_POWER_OFF:
+ reg16 |= 1;
+ state = "off";
+ break;
+ case MAINBOARD_POWER_ON:
+ reg16 &= ~1;
+ state = "on";
+ break;
+ case MAINBOARD_POWER_KEEP:
+ reg16 &= ~1;
+ state = "state keep";
+ break;
+ default:
+ state = "undefined";
+ }
+ pci_write_config16(dev, GEN_PMCON_3, reg16);
+ printk(BIOS_INFO, "Set power %s after power failure.\n", state);
+
+ /* GPE setup based on device tree configuration */
+ enable_all_gpe(config->gpe0_en_1, config->gpe0_en_2,
+ config->gpe0_en_3, config->gpe0_en_4);
+
+ /* SMI setup based on device tree configuration */
+ enable_alt_smi(config->alt_gp_smi_en);
+}
+
+static void pch_misc_init(struct device *dev)
+{
+ u8 reg8;
+ u16 reg16;
+ u32 reg32;
+
+ reg16 = pci_read_config16(dev, GEN_PMCON_3);
+
+ reg16 &= ~(3 << 4); /* SLP_S4# Assertion Stretch 4s */
+ reg16 |= (1 << 3); /* SLP_S4# Assertion Stretch Enable */
+
+ reg16 &= ~(1 << 10);
+ reg16 |= (1 << 11); /* SLP_S3# Min Assertion Width 50ms */
+
+ reg16 |= (1 << 12); /* Disable SLP stretch after SUS well */
+
+ pci_write_config16(dev, GEN_PMCON_3, reg16);
+
+ /* Prepare sleep mode */
+ reg32 = inl(ACPI_BASE_ADDRESS + PM1_CNT);
+ reg32 &= ~SLP_TYP;
+ reg32 |= SCI_EN;
+ outl(reg32, ACPI_BASE_ADDRESS + PM1_CNT);
+
+ /* Set up NMI on errors */
+ reg8 = inb(0x61);
+ reg8 &= ~0xf0; /* Higher nibble must be 0 */
+ reg8 |= (1 << 2); /* PCI SERR# disable for now */
+ outb(reg8, 0x61);
+
+ /* Disable NMI sources */
+ reg8 = inb(0x70);
+ reg8 |= (1 << 7); /* Can't mask NMI from PCI-E and NMI_NOW */
+ outb(reg8, 0x70);
+
+ /* Indicate DRAM init done for MRC */
+ pci_or_config8(dev, GEN_PMCON_2, 1 << 7);
+
+ /* Enable BIOS updates outside of SMM */
+ pci_and_config8(dev, BIOS_CNTL, ~(1 << 5));
+
+ /* Clear status bits to prevent unexpected wake */
+ RCBA32_OR(0x3310, 0x2f);
+
+ RCBA32_AND_OR(0x3f02, ~0xf, 0);
+
+ /* Enable PCIe Releaxed Order */
+ RCBA32_OR(0x2314, (1 << 31) | (1 << 7)),
+ RCBA32_OR(0x1114, (1 << 15) | (1 << 14)),
+
+ /* Setup SERIRQ, enable continuous mode */
+ reg8 = pci_read_config8(dev, SERIRQ_CNTL);
+ reg8 |= 1 << 7;
+
+ if (CONFIG(SERIRQ_CONTINUOUS_MODE))
+ reg8 |= 1 << 6;
+
+ pci_write_config8(dev, SERIRQ_CNTL, reg8);
+}
+
+/* Magic register settings for power management */
+static void pch_pm_init_magic(struct device *dev)
+{
+ pci_write_config8(dev, 0xa9, 0x46);
+
+ RCBA32_AND_OR(0x232c, ~1, 0);
+
+ RCBA32_OR(0x1100, 0x0000c13f);
+
+ RCBA32_AND_OR(0x2320, ~0x60, 0x10);
+
+ RCBA32(0x3314) = 0x00012fff;
+
+ RCBA32_AND_OR(0x3318, ~0x000f0330, 0x0dcf0400);
+
+ RCBA32(0x3324) = 0x04000000;
+ RCBA32(0x3368) = 0x00041400;
+ RCBA32(0x3388) = 0x3f8ddbff;
+ RCBA32(0x33ac) = 0x00007001;
+ RCBA32(0x33b0) = 0x00181900;
+ RCBA32(0x33c0) = 0x00060A00;
+ RCBA32(0x33d0) = 0x06200840;
+ RCBA32(0x3a28) = 0x01010101;
+ RCBA32(0x3a2c) = 0x040c0404;
+ RCBA32(0x3a9c) = 0x9000000a;
+ RCBA32(0x2b1c) = 0x03808033;
+ RCBA32(0x2b34) = 0x80000009;
+ RCBA32(0x3348) = 0x022ddfff;
+ RCBA32(0x334c) = 0x00000001;
+ RCBA32(0x3358) = 0x0001c000;
+ RCBA32(0x3380) = 0x3f8ddbff;
+ RCBA32(0x3384) = 0x0001c7e1;
+ RCBA32(0x338c) = 0x0001c7e1;
+ RCBA32(0x3398) = 0x0001c000;
+ RCBA32(0x33a8) = 0x00181900;
+ RCBA32(0x33dc) = 0x00080000;
+ RCBA32(0x33e0) = 0x00000001;
+ RCBA32(0x3a20) = 0x0000040c;
+ RCBA32(0x3a24) = 0x01010101;
+ RCBA32(0x3a30) = 0x01010101;
+
+ pci_update_config32(dev, 0xac, ~0x00200000, 0);
+
+ RCBA32_OR(0x0410, 0x00000003);
+ RCBA32_OR(0x2618, 0x08000000);
+ RCBA32_OR(0x2300, 0x00000002);
+ RCBA32_OR(0x2600, 0x00000008);
+
+ RCBA32(0x33b4) = 0x00007001;
+ RCBA32(0x3350) = 0x022ddfff;
+ RCBA32(0x3354) = 0x00000001;
+
+ /* Power Optimizer */
+ RCBA32_OR(0x33d4, 0x08000000);
+ RCBA32_OR(0x33c8, 0x00000080);
+
+ RCBA32(0x2b10) = 0x0000883c;
+ RCBA32(0x2b14) = 0x1e0a4616;
+ RCBA32(0x2b24) = 0x40000005;
+ RCBA32(0x2b20) = 0x0005db01;
+ RCBA32(0x3a80) = 0x05145005;
+ RCBA32(0x3a84) = 0x00001005;
+
+ RCBA32_OR(0x33d4, 0x2fff2fb1);
+ RCBA32_OR(0x33c8, 0x00008000);
+}
+
+static void pch_enable_mphy(void)
+{
+ u32 gpio71_native = gpio_is_native(71);
+ u32 data_and = 0xffffffff;
+ u32 data_or = (1 << 14) | (1 << 13) | (1 << 12);
+
+ if (gpio71_native) {
+ data_or |= (1 << 0);
+ if (pch_is_wpt()) {
+ data_and &= ~((1 << 7) | (1 << 6) | (1 << 3));
+ data_or |= (1 << 5) | (1 << 4);
+
+ if (pch_is_wpt_ulx()) {
+ /* Check if SATA and USB3 MPHY are enabled */
+ u32 strap19 = pch_read_soft_strap(19);
+ strap19 &= ((1 << 31) | (1 << 30));
+ strap19 >>= 30;
+ if (strap19 == 3) {
+ data_or |= (1 << 3);
+ printk(BIOS_DEBUG, "Enable ULX MPHY PG "
+ "control in single domain\n");
+ } else if (strap19 == 0) {
+ printk(BIOS_DEBUG, "Enable ULX MPHY PG "
+ "control in split domains\n");
+ } else {
+ printk(BIOS_DEBUG, "Invalid PCH Soft "
+ "Strap 19 configuration\n");
+ }
+ } else {
+ data_or |= (1 << 3);
+ }
+ }
+ }
+
+ pch_iobp_update(0xCF000000, data_and, data_or);
+}
+
+static void pch_init_deep_sx(struct device *dev)
+{
+ const struct soc_intel_broadwell_pch_config *config = config_of(dev);
+
+ if (config->deep_sx_enable_ac) {
+ RCBA32_OR(DEEP_S3_POL, DEEP_S3_EN_AC);
+ RCBA32_OR(DEEP_S5_POL, DEEP_S5_EN_AC);
+ }
+
+ if (config->deep_sx_enable_dc) {
+ RCBA32_OR(DEEP_S3_POL, DEEP_S3_EN_DC);
+ RCBA32_OR(DEEP_S5_POL, DEEP_S5_EN_DC);
+ }
+
+ if (config->deep_sx_enable_ac || config->deep_sx_enable_dc)
+ RCBA32_OR(DEEP_SX_CONFIG,
+ DEEP_SX_WAKE_PIN_EN | DEEP_SX_GP27_PIN_EN);
+}
+
+/* Power Management init */
+static void pch_pm_init(struct device *dev)
+{
+ printk(BIOS_DEBUG, "PCH PM init\n");
+
+ pch_init_deep_sx(dev);
+
+ pch_enable_mphy();
+
+ pch_pm_init_magic(dev);
+
+ if (pch_is_wpt()) {
+ RCBA32_OR(0x33e0, (1 << 4) | (1 << 1));
+ RCBA32_OR(0x2b1c, (1 << 22) | (1 << 14) | (1 << 13));
+ RCBA32(0x33e4) = 0x16bf0002;
+ RCBA32_OR(0x33e4, 0x1);
+ }
+
+ pch_iobp_update(0xCA000000, ~0UL, 0x00000009);
+
+ /* Set RCBA 0x2b1c[29]=1 if DSP disabled */
+ if (RCBA32(FD) & PCH_DISABLE_ADSPD)
+ RCBA32_OR(0x2b1c, (1 << 29));
+
+}
+
+static void pch_cg_init(struct device *dev)
+{
+ u32 reg32;
+ u16 reg16;
+ struct device *igd_dev = pcidev_path_on_root(SA_DEVFN_IGD);
+
+ /* DMI */
+ RCBA32_OR(0x2234, 0xf);
+
+ reg16 = pci_read_config16(dev, GEN_PMCON_1);
+ reg16 &= ~(1 << 10); /* Disable BIOS_PCI_EXP_EN for native PME */
+ if (pch_is_wpt())
+ reg16 &= ~(1 << 11);
+ else
+ reg16 |= (1 << 11);
+ reg16 |= (1 << 5) | (1 << 6) | (1 << 7) | (1 << 12);
+ reg16 |= (1 << 2); // PCI CLKRUN# Enable
+ pci_write_config16(dev, GEN_PMCON_1, reg16);
+
+ /*
+ * RCBA + 0x2614[27:25,14:13,10,8] = 101,11,1,1
+ * RCBA + 0x2614[23:16] = 0x20
+ * RCBA + 0x2614[30:28] = 0x0
+ * RCBA + 0x2614[26] = 1 (IF 0:2.0@0x08 >= 0x0b)
+ */
+ RCBA32_AND_OR(0x2614, ~0x64ff0000, 0x0a206500);
+
+ /* Check for 0:2.0@0x08 >= 0x0b */
+ if (pch_is_wpt() || pci_read_config8(igd_dev, 0x8) >= 0x0b)
+ RCBA32_OR(0x2614, (1 << 26));
+
+ RCBA32_OR(0x900, 0x0000031f);
+
+ reg32 = RCBA32(CG);
+ if (RCBA32(0x3454) & (1 << 4))
+ reg32 &= ~(1 << 29); // LPC Dynamic
+ else
+ reg32 |= (1 << 29); // LPC Dynamic
+ reg32 |= (1 << 31); // LP LPC
+ reg32 |= (1 << 30); // LP BLA
+ if (RCBA32(0x3454) & (1 << 4))
+ reg32 &= ~(1 << 29);
+ else
+ reg32 |= (1 << 29);
+ reg32 |= (1 << 28); // GPIO Dynamic
+ reg32 |= (1 << 27); // HPET Dynamic
+ reg32 |= (1 << 26); // Generic Platform Event Clock
+ if (RCBA32(BUC) & PCH_DISABLE_GBE)
+ reg32 |= (1 << 23); // GbE Static
+ if (RCBA32(FD) & PCH_DISABLE_HD_AUDIO)
+ reg32 |= (1 << 21); // HDA Static
+ reg32 |= (1 << 22); // HDA Dynamic
+ RCBA32(CG) = reg32;
+
+ /* PCH-LP LPC */
+ if (pch_is_wpt())
+ RCBA32_AND_OR(0x3434, ~0x1f, 0x17);
+ else
+ RCBA32_OR(0x3434, 0x7);
+
+ /* SPI */
+ RCBA32_OR(0x38c0, 0x3c07);
+
+ pch_iobp_update(0xCE00C000, ~1UL, 0x00000000);
+}
+
+static void pch_set_acpi_mode(void)
+{
+ if (!acpi_is_wakeup_s3()) {
+ apm_control(APM_CNT_ACPI_DISABLE);
+ }
+}
+
+static void lpc_init(struct device *dev)
+{
+ /* Legacy initialization */
+ isa_dma_init();
+ sb_rtc_init();
+ pch_misc_init(dev);
+
+ /* Interrupt configuration */
+ pch_enable_ioapic(dev);
+ pch_pirq_init(dev);
+ setup_i8259();
+ i8259_configure_irq_trigger(9, 1);
+ enable_hpet(dev);
+
+ /* Initialize power management */
+ pch_power_options(dev);
+ pch_pm_init(dev);
+ pch_cg_init(dev);
+
+ pch_set_acpi_mode();
+}
+
+static void pch_lpc_add_mmio_resources(struct device *dev)
+{
+ u32 reg;
+ struct resource *res;
+ const u32 default_decode_base = IO_APIC_ADDR;
+
+ /*
+ * Just report all resources from IO-APIC base to 4GiB. Don't mark
+ * them reserved as that may upset the OS if this range is marked
+ * as reserved in the e820.
+ */
+ res = new_resource(dev, OIC);
+ res->base = default_decode_base;
+ res->size = 0 - default_decode_base;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ /* RCBA */
+ if (default_decode_base > RCBA_BASE_ADDRESS) {
+ res = new_resource(dev, RCBA);
+ res->base = RCBA_BASE_ADDRESS;
+ res->size = 16 * 1024;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED |
+ IORESOURCE_FIXED | IORESOURCE_RESERVE;
+ }
+
+ /* Check LPC Memory Decode register. */
+ reg = pci_read_config32(dev, LGMR);
+ if (reg & 1) {
+ reg &= ~0xffff;
+ if (reg < default_decode_base) {
+ res = new_resource(dev, LGMR);
+ res->base = reg;
+ res->size = 16 * 1024;
+ res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED |
+ IORESOURCE_FIXED | IORESOURCE_RESERVE;
+ }
+ }
+}
+
+/* Default IO range claimed by the LPC device. The upper bound is exclusive. */
+#define LPC_DEFAULT_IO_RANGE_LOWER 0
+#define LPC_DEFAULT_IO_RANGE_UPPER 0x1000
+
+static inline int pch_io_range_in_default(int base, int size)
+{
+ /* Does it start above the range? */
+ if (base >= LPC_DEFAULT_IO_RANGE_UPPER)
+ return 0;
+
+ /* Is it entirely contained? */
+ if (base >= LPC_DEFAULT_IO_RANGE_LOWER &&
+ (base + size) < LPC_DEFAULT_IO_RANGE_UPPER)
+ return 1;
+
+ /* This will return not in range for partial overlaps. */
+ return 0;
+}
+
+/*
+ * Note: this function assumes there is no overlap with the default LPC device's
+ * claimed range: LPC_DEFAULT_IO_RANGE_LOWER -> LPC_DEFAULT_IO_RANGE_UPPER.
+ */
+static void pch_lpc_add_io_resource(struct device *dev, u16 base, u16 size,
+ int index)
+{
+ struct resource *res;
+
+ if (pch_io_range_in_default(base, size))
+ return;
+
+ res = new_resource(dev, index);
+ res->base = base;
+ res->size = size;
+ res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+}
+
+static void pch_lpc_add_gen_io_resources(struct device *dev, int reg_value,
+ int index)
+{
+ /*
+ * Check if the register is enabled. If so and the base exceeds the
+ * device's default claim range add the resource.
+ */
+ if (reg_value & 1) {
+ u16 base = reg_value & 0xfffc;
+ u16 size = (0x3 | ((reg_value >> 16) & 0xfc)) + 1;
+ pch_lpc_add_io_resource(dev, base, size, index);
+ }
+}
+
+static void pch_lpc_add_io_resources(struct device *dev)
+{
+ struct resource *res;
+ const struct soc_intel_broadwell_pch_config *config = config_of(dev);
+
+ /* Add the default claimed IO range for the LPC device. */
+ res = new_resource(dev, 0);
+ res->base = LPC_DEFAULT_IO_RANGE_LOWER;
+ res->size = LPC_DEFAULT_IO_RANGE_UPPER - LPC_DEFAULT_IO_RANGE_LOWER;
+ res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
+
+ /* GPIOBASE */
+ pch_lpc_add_io_resource(dev, GPIO_BASE_ADDRESS,
+ GPIO_BASE_SIZE, GPIO_BASE);
+
+ /* PMBASE */
+ pch_lpc_add_io_resource(dev, ACPI_BASE_ADDRESS, ACPI_BASE_SIZE, PMBASE);
+
+ /* LPC Generic IO Decode range. */
+ pch_lpc_add_gen_io_resources(dev, config->gen1_dec, LPC_GEN1_DEC);
+ pch_lpc_add_gen_io_resources(dev, config->gen2_dec, LPC_GEN2_DEC);
+ pch_lpc_add_gen_io_resources(dev, config->gen3_dec, LPC_GEN3_DEC);
+ pch_lpc_add_gen_io_resources(dev, config->gen4_dec, LPC_GEN4_DEC);
+}
+
+static void pch_lpc_read_resources(struct device *dev)
+{
+ struct global_nvs *gnvs;
+
+ /* Get the normal PCI resources of this device. */
+ pci_dev_read_resources(dev);
+
+ /* Add non-standard MMIO resources. */
+ pch_lpc_add_mmio_resources(dev);
+
+ /* Add IO resources. */
+ pch_lpc_add_io_resources(dev);
+
+ /* Allocate ACPI NVS in CBMEM */
+ gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(struct global_nvs));
+ if (!acpi_is_wakeup_s3() && gnvs)
+ memset(gnvs, 0, sizeof(struct global_nvs));
+}
+
+static void southcluster_inject_dsdt(const struct device *device)
+{
+ struct global_nvs *gnvs;
+
+ gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
+ if (!gnvs) {
+ gnvs = cbmem_add(CBMEM_ID_ACPI_GNVS, sizeof(*gnvs));
+ if (gnvs)
+ memset(gnvs, 0, sizeof(*gnvs));
+ }
+
+ if (gnvs) {
+ acpi_create_gnvs(gnvs);
+ /* And tell SMI about it */
+ apm_control(APM_CNT_GNVS_UPDATE);
+
+ /* Add it to DSDT. */
+ acpigen_write_scope("\\");
+ acpigen_write_name_dword("NVSA", (u32) gnvs);
+ acpigen_pop_len();
+ }
+}
+
+static unsigned long broadwell_write_acpi_tables(const struct device *device,
+ unsigned long current,
+ struct acpi_rsdp *rsdp)
+{
+ if (CONFIG(INTEL_PCH_UART_CONSOLE))
+ current = acpi_write_dbg2_pci_uart(rsdp, current,
+ (CONFIG_INTEL_PCH_UART_CONSOLE_NUMBER == 1) ?
+ PCH_DEV_UART1 : PCH_DEV_UART0,
+ ACPI_ACCESS_SIZE_BYTE_ACCESS);
+ return acpi_write_hpet(device, current, rsdp);
+}
+
+static struct device_operations device_ops = {
+ .read_resources = &pch_lpc_read_resources,
+ .set_resources = &pci_dev_set_resources,
+ .enable_resources = &pci_dev_enable_resources,
+ .acpi_inject_dsdt = southcluster_inject_dsdt,
+ .write_acpi_tables = broadwell_write_acpi_tables,
+ .init = &lpc_init,
+ .scan_bus = &scan_static_bus,
+ .ops_pci = &pci_dev_ops_pci,
+};
+
+static const unsigned short pci_device_ids[] = {
+ PCH_LPT_LP_SAMPLE,
+ PCH_LPT_LP_PREMIUM,
+ PCH_LPT_LP_MAINSTREAM,
+ PCH_LPT_LP_VALUE,
+ PCH_WPT_HSW_U_SAMPLE,
+ PCH_WPT_BDW_U_SAMPLE,
+ PCH_WPT_BDW_U_PREMIUM,
+ PCH_WPT_BDW_U_BASE,
+ PCH_WPT_BDW_Y_SAMPLE,
+ PCH_WPT_BDW_Y_PREMIUM,
+ PCH_WPT_BDW_Y_BASE,
+ PCH_WPT_BDW_H,
+ 0
+};
+
+static const struct pci_driver pch_lpc __pci_driver = {
+ .ops = &device_ops,
+ .vendor = PCI_VENDOR_ID_INTEL,
+ .devices = pci_device_ids,
+};