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-rw-r--r--src/soc/intel/broadwell/acpi.c396
-rw-r--r--src/soc/intel/broadwell/cpu/Makefile.inc1
-rw-r--r--src/soc/intel/broadwell/cpu/acpi.c395
-rw-r--r--src/soc/intel/broadwell/pch/Makefile.inc1
-rw-r--r--src/soc/intel/broadwell/pch/acpi.c55
5 files changed, 452 insertions, 396 deletions
diff --git a/src/soc/intel/broadwell/acpi.c b/src/soc/intel/broadwell/acpi.c
index 7366642c62..9b5ac9ef7e 100644
--- a/src/soc/intel/broadwell/acpi.c
+++ b/src/soc/intel/broadwell/acpi.c
@@ -26,128 +26,6 @@
#include <soc/systemagent.h>
#include <soc/intel/broadwell/chip.h>
-/*
- * List of supported C-states in this processor. Only the ULT parts support C8,
- * C9, and C10.
- */
-enum {
- C_STATE_C0, /* 0 */
- C_STATE_C1, /* 1 */
- C_STATE_C1E, /* 2 */
- C_STATE_C3, /* 3 */
- C_STATE_C6_SHORT_LAT, /* 4 */
- C_STATE_C6_LONG_LAT, /* 5 */
- C_STATE_C7_SHORT_LAT, /* 6 */
- C_STATE_C7_LONG_LAT, /* 7 */
- C_STATE_C7S_SHORT_LAT, /* 8 */
- C_STATE_C7S_LONG_LAT, /* 9 */
- C_STATE_C8, /* 10 */
- C_STATE_C9, /* 11 */
- C_STATE_C10, /* 12 */
- NUM_C_STATES
-};
-
-#define MWAIT_RES(state, sub_state) \
- { \
- .addrl = (((state) << 4) | (sub_state)), \
- .space_id = ACPI_ADDRESS_SPACE_FIXED, \
- .bit_width = ACPI_FFIXEDHW_VENDOR_INTEL, \
- .bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT, \
- .access_size = ACPI_FFIXEDHW_FLAG_HW_COORD, \
- }
-
-static acpi_cstate_t cstate_map[NUM_C_STATES] = {
- [C_STATE_C0] = { },
- [C_STATE_C1] = {
- .latency = 0,
- .power = 1000,
- .resource = MWAIT_RES(0, 0),
- },
- [C_STATE_C1E] = {
- .latency = 0,
- .power = 1000,
- .resource = MWAIT_RES(0, 1),
- },
- [C_STATE_C3] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(0),
- .power = 900,
- .resource = MWAIT_RES(1, 0),
- },
- [C_STATE_C6_SHORT_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
- .power = 800,
- .resource = MWAIT_RES(2, 0),
- },
- [C_STATE_C6_LONG_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
- .power = 800,
- .resource = MWAIT_RES(2, 1),
- },
- [C_STATE_C7_SHORT_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
- .power = 700,
- .resource = MWAIT_RES(3, 0),
- },
- [C_STATE_C7_LONG_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
- .power = 700,
- .resource = MWAIT_RES(3, 1),
- },
- [C_STATE_C7S_SHORT_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
- .power = 700,
- .resource = MWAIT_RES(3, 2),
- },
- [C_STATE_C7S_LONG_LAT] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
- .power = 700,
- .resource = MWAIT_RES(3, 3),
- },
- [C_STATE_C8] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(3),
- .power = 600,
- .resource = MWAIT_RES(4, 0),
- },
- [C_STATE_C9] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(4),
- .power = 500,
- .resource = MWAIT_RES(5, 0),
- },
- [C_STATE_C10] = {
- .latency = C_STATE_LATENCY_FROM_LAT_REG(5),
- .power = 400,
- .resource = MWAIT_RES(6, 0),
- },
-};
-
-static int cstate_set_s0ix[3] = {
- C_STATE_C1E,
- C_STATE_C7S_LONG_LAT,
- C_STATE_C10
-};
-
-static int cstate_set_non_s0ix[3] = {
- C_STATE_C1E,
- C_STATE_C3,
- C_STATE_C7S_LONG_LAT
-};
-
-static int get_cores_per_package(void)
-{
- struct cpuinfo_x86 c;
- struct cpuid_result result;
- int cores = 1;
-
- get_fms(&c, cpuid_eax(1));
- if (c.x86 != 6)
- return 1;
-
- result = cpuid_ext(0xb, 1);
- cores = result.ebx & 0xff;
-
- return cores;
-}
-
unsigned long acpi_fill_mcfg(unsigned long current)
{
current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current,
@@ -155,252 +33,6 @@ unsigned long acpi_fill_mcfg(unsigned long current)
return current;
}
-static acpi_tstate_t tss_table_fine[] = {
- { 100, 1000, 0, 0x00, 0 },
- { 94, 940, 0, 0x1f, 0 },
- { 88, 880, 0, 0x1e, 0 },
- { 82, 820, 0, 0x1d, 0 },
- { 75, 760, 0, 0x1c, 0 },
- { 69, 700, 0, 0x1b, 0 },
- { 63, 640, 0, 0x1a, 0 },
- { 57, 580, 0, 0x19, 0 },
- { 50, 520, 0, 0x18, 0 },
- { 44, 460, 0, 0x17, 0 },
- { 38, 400, 0, 0x16, 0 },
- { 32, 340, 0, 0x15, 0 },
- { 25, 280, 0, 0x14, 0 },
- { 19, 220, 0, 0x13, 0 },
- { 13, 160, 0, 0x12, 0 },
-};
-
-static acpi_tstate_t tss_table_coarse[] = {
- { 100, 1000, 0, 0x00, 0 },
- { 88, 875, 0, 0x1f, 0 },
- { 75, 750, 0, 0x1e, 0 },
- { 63, 625, 0, 0x1d, 0 },
- { 50, 500, 0, 0x1c, 0 },
- { 38, 375, 0, 0x1b, 0 },
- { 25, 250, 0, 0x1a, 0 },
- { 13, 125, 0, 0x19, 0 },
-};
-
-static void generate_T_state_entries(int core, int cores_per_package)
-{
- /* Indicate SW_ALL coordination for T-states */
- acpigen_write_TSD_package(core, cores_per_package, SW_ALL);
-
- /* Indicate FFixedHW so OS will use MSR */
- acpigen_write_empty_PTC();
-
- /* Set a T-state limit that can be modified in NVS */
- acpigen_write_TPC("\\TLVL");
-
- /*
- * CPUID.(EAX=6):EAX[5] indicates support
- * for extended throttle levels.
- */
- if (cpuid_eax(6) & (1 << 5))
- acpigen_write_TSS_package(
- ARRAY_SIZE(tss_table_fine), tss_table_fine);
- else
- acpigen_write_TSS_package(
- ARRAY_SIZE(tss_table_coarse), tss_table_coarse);
-}
-
-static void generate_C_state_entries(void)
-{
- acpi_cstate_t map[3];
- int *set;
- int i;
-
- config_t *config = config_of_soc();
-
- if (config->s0ix_enable)
- set = cstate_set_s0ix;
- else
- set = cstate_set_non_s0ix;
-
- for (i = 0; i < 3; i++) {
- memcpy(&map[i], &cstate_map[set[i]], sizeof(acpi_cstate_t));
- map[i].ctype = i + 1;
- }
-
- /* Generate C-state tables */
- acpigen_write_CST_package(map, ARRAY_SIZE(map));
-}
-
-static int calculate_power(int tdp, int p1_ratio, int ratio)
-{
- u32 m;
- u32 power;
-
- /*
- * M = ((1.1 - ((p1_ratio - ratio) * 0.00625)) / 1.1) ^ 2
- *
- * Power = (ratio / p1_ratio) * m * tdp
- */
-
- m = (110000 - ((p1_ratio - ratio) * 625)) / 11;
- m = (m * m) / 1000;
-
- power = ((ratio * 100000 / p1_ratio) / 100);
- power *= (m / 100) * (tdp / 1000);
- power /= 1000;
-
- return (int)power;
-}
-
-static void generate_P_state_entries(int core, int cores_per_package)
-{
- int ratio_min, ratio_max, ratio_turbo, ratio_step;
- int coord_type, power_max, power_unit, num_entries;
- int ratio, power, clock, clock_max;
- msr_t msr;
-
- /* Determine P-state coordination type from MISC_PWR_MGMT[0] */
- msr = rdmsr(MSR_MISC_PWR_MGMT);
- if (msr.lo & MISC_PWR_MGMT_EIST_HW_DIS)
- coord_type = SW_ANY;
- else
- coord_type = HW_ALL;
-
- /* Get bus ratio limits and calculate clock speeds */
- msr = rdmsr(MSR_PLATFORM_INFO);
- ratio_min = (msr.hi >> (40-32)) & 0xff; /* Max Efficiency Ratio */
-
- /* Determine if this CPU has configurable TDP */
- if (cpu_config_tdp_levels()) {
- /* Set max ratio to nominal TDP ratio */
- msr = rdmsr(MSR_CONFIG_TDP_NOMINAL);
- ratio_max = msr.lo & 0xff;
- } else {
- /* Max Non-Turbo Ratio */
- ratio_max = (msr.lo >> 8) & 0xff;
- }
- clock_max = ratio_max * CPU_BCLK;
-
- /* Calculate CPU TDP in mW */
- msr = rdmsr(MSR_PKG_POWER_SKU_UNIT);
- power_unit = 2 << ((msr.lo & 0xf) - 1);
- msr = rdmsr(MSR_PKG_POWER_SKU);
- power_max = ((msr.lo & 0x7fff) / power_unit) * 1000;
-
- /* Write _PCT indicating use of FFixedHW */
- acpigen_write_empty_PCT();
-
- /* Write _PPC with no limit on supported P-state */
- acpigen_write_PPC_NVS();
-
- /* Write PSD indicating configured coordination type */
- acpigen_write_PSD_package(core, 1, coord_type);
-
- /* Add P-state entries in _PSS table */
- acpigen_write_name("_PSS");
-
- /* Determine ratio points */
- ratio_step = PSS_RATIO_STEP;
- num_entries = (ratio_max - ratio_min) / ratio_step;
- while (num_entries > PSS_MAX_ENTRIES-1) {
- ratio_step <<= 1;
- num_entries >>= 1;
- }
-
- /* P[T] is Turbo state if enabled */
- if (get_turbo_state() == TURBO_ENABLED) {
- /* _PSS package count including Turbo */
- acpigen_write_package(num_entries + 2);
-
- msr = rdmsr(MSR_TURBO_RATIO_LIMIT);
- ratio_turbo = msr.lo & 0xff;
-
- /* Add entry for Turbo ratio */
- acpigen_write_PSS_package(
- clock_max + 1, /*MHz*/
- power_max, /*mW*/
- PSS_LATENCY_TRANSITION, /*lat1*/
- PSS_LATENCY_BUSMASTER, /*lat2*/
- ratio_turbo << 8, /*control*/
- ratio_turbo << 8); /*status*/
- } else {
- /* _PSS package count without Turbo */
- acpigen_write_package(num_entries + 1);
- }
-
- /* First regular entry is max non-turbo ratio */
- acpigen_write_PSS_package(
- clock_max, /*MHz*/
- power_max, /*mW*/
- PSS_LATENCY_TRANSITION, /*lat1*/
- PSS_LATENCY_BUSMASTER, /*lat2*/
- ratio_max << 8, /*control*/
- ratio_max << 8); /*status*/
-
- /* Generate the remaining entries */
- for (ratio = ratio_min + ((num_entries - 1) * ratio_step);
- ratio >= ratio_min; ratio -= ratio_step) {
-
- /* Calculate power at this ratio */
- power = calculate_power(power_max, ratio_max, ratio);
- clock = ratio * CPU_BCLK;
-
- acpigen_write_PSS_package(
- clock, /*MHz*/
- power, /*mW*/
- PSS_LATENCY_TRANSITION, /*lat1*/
- PSS_LATENCY_BUSMASTER, /*lat2*/
- ratio << 8, /*control*/
- ratio << 8); /*status*/
- }
-
- /* Fix package length */
- acpigen_pop_len();
-}
-
-void generate_cpu_entries(const struct device *device)
-{
- int coreID, cpuID, pcontrol_blk = ACPI_BASE_ADDRESS, plen = 6;
- int totalcores = dev_count_cpu();
- int cores_per_package = get_cores_per_package();
- int numcpus = totalcores/cores_per_package;
-
- printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n",
- numcpus, cores_per_package);
-
- for (cpuID = 1; cpuID <= numcpus; cpuID++) {
- for (coreID = 1; coreID <= cores_per_package; coreID++) {
- if (coreID > 1) {
- pcontrol_blk = 0;
- plen = 0;
- }
-
- /* Generate processor \_SB.CPUx */
- acpigen_write_processor(
- (cpuID - 1) * cores_per_package+coreID - 1,
- pcontrol_blk, plen);
-
- /* Generate P-state tables */
- generate_P_state_entries(
- coreID - 1, cores_per_package);
-
- /* Generate C-state tables */
- generate_C_state_entries();
-
- /* Generate T-state tables */
- generate_T_state_entries(
- cpuID - 1, cores_per_package);
-
- acpigen_pop_len();
- }
- }
-
- /* PPKG is usually used for thermal management
- of the first and only package. */
- acpigen_write_processor_package("PPKG", 0, cores_per_package);
-
- /* Add a method to notify processor nodes */
- acpigen_write_processor_cnot(cores_per_package);
-}
-
static unsigned long acpi_fill_dmar(unsigned long current)
{
struct device *const igfx_dev = pcidev_path_on_root(SA_DEVFN_IGD);
@@ -471,31 +103,3 @@ unsigned long northbridge_write_acpi_tables(const struct device *const dev,
return current;
}
-
-unsigned long acpi_fill_madt(unsigned long current)
-{
- int sci = acpi_sci_irq();
- acpi_madt_irqoverride_t *irqovr;
- uint16_t flags = MP_IRQ_TRIGGER_LEVEL;
-
- /* Local APICs */
- current = acpi_create_madt_lapics(current);
-
- /* IOAPIC */
- current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, 2, IO_APIC_ADDR, 0);
-
- /* INT_SRC_OVR */
- irqovr = (void *)current;
- current += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0);
-
- if (sci >= 20)
- flags |= MP_IRQ_POLARITY_LOW;
- else
- flags |= MP_IRQ_POLARITY_HIGH;
-
- /* SCI */
- irqovr = (void *)current;
- current += acpi_create_madt_irqoverride(irqovr, 0, sci, sci, flags);
-
- return current;
-}
diff --git a/src/soc/intel/broadwell/cpu/Makefile.inc b/src/soc/intel/broadwell/cpu/Makefile.inc
index e9f46376af..803696a1f0 100644
--- a/src/soc/intel/broadwell/cpu/Makefile.inc
+++ b/src/soc/intel/broadwell/cpu/Makefile.inc
@@ -16,6 +16,7 @@ romstage-y += ../../../../cpu/intel/car/romstage.c
postcar-y += ../../../../cpu/intel/car/non-evict/exit_car.S
+ramstage-y += acpi.c
ramstage-y += cpu.c
ramstage-y += smmrelocate.c
diff --git a/src/soc/intel/broadwell/cpu/acpi.c b/src/soc/intel/broadwell/cpu/acpi.c
new file mode 100644
index 0000000000..ec3d588a44
--- /dev/null
+++ b/src/soc/intel/broadwell/cpu/acpi.c
@@ -0,0 +1,395 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <acpi/acpi_gnvs.h>
+#include <acpi/acpigen.h>
+#include <arch/ioapic.h>
+#include <arch/smp/mpspec.h>
+#include <cbmem.h>
+#include <device/pci_ops.h>
+#include <cpu/x86/smm.h>
+#include <console/console.h>
+#include <types.h>
+#include <string.h>
+#include <arch/cpu.h>
+#include <cpu/x86/msr.h>
+#include <cpu/intel/turbo.h>
+#include <ec/google/chromeec/ec.h>
+#include <vendorcode/google/chromeos/gnvs.h>
+#include <soc/acpi.h>
+#include <soc/cpu.h>
+#include <soc/iomap.h>
+#include <soc/lpc.h>
+#include <soc/msr.h>
+#include <soc/pci_devs.h>
+#include <soc/pm.h>
+#include <soc/systemagent.h>
+#include <soc/intel/broadwell/chip.h>
+
+/*
+ * List of supported C-states in this processor. Only the ULT parts support C8,
+ * C9, and C10.
+ */
+enum {
+ C_STATE_C0, /* 0 */
+ C_STATE_C1, /* 1 */
+ C_STATE_C1E, /* 2 */
+ C_STATE_C3, /* 3 */
+ C_STATE_C6_SHORT_LAT, /* 4 */
+ C_STATE_C6_LONG_LAT, /* 5 */
+ C_STATE_C7_SHORT_LAT, /* 6 */
+ C_STATE_C7_LONG_LAT, /* 7 */
+ C_STATE_C7S_SHORT_LAT, /* 8 */
+ C_STATE_C7S_LONG_LAT, /* 9 */
+ C_STATE_C8, /* 10 */
+ C_STATE_C9, /* 11 */
+ C_STATE_C10, /* 12 */
+ NUM_C_STATES
+};
+
+#define MWAIT_RES(state, sub_state) \
+ { \
+ .addrl = (((state) << 4) | (sub_state)), \
+ .space_id = ACPI_ADDRESS_SPACE_FIXED, \
+ .bit_width = ACPI_FFIXEDHW_VENDOR_INTEL, \
+ .bit_offset = ACPI_FFIXEDHW_CLASS_MWAIT, \
+ .access_size = ACPI_FFIXEDHW_FLAG_HW_COORD, \
+ }
+
+static acpi_cstate_t cstate_map[NUM_C_STATES] = {
+ [C_STATE_C0] = { },
+ [C_STATE_C1] = {
+ .latency = 0,
+ .power = 1000,
+ .resource = MWAIT_RES(0, 0),
+ },
+ [C_STATE_C1E] = {
+ .latency = 0,
+ .power = 1000,
+ .resource = MWAIT_RES(0, 1),
+ },
+ [C_STATE_C3] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(0),
+ .power = 900,
+ .resource = MWAIT_RES(1, 0),
+ },
+ [C_STATE_C6_SHORT_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
+ .power = 800,
+ .resource = MWAIT_RES(2, 0),
+ },
+ [C_STATE_C6_LONG_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
+ .power = 800,
+ .resource = MWAIT_RES(2, 1),
+ },
+ [C_STATE_C7_SHORT_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
+ .power = 700,
+ .resource = MWAIT_RES(3, 0),
+ },
+ [C_STATE_C7_LONG_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
+ .power = 700,
+ .resource = MWAIT_RES(3, 1),
+ },
+ [C_STATE_C7S_SHORT_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(1),
+ .power = 700,
+ .resource = MWAIT_RES(3, 2),
+ },
+ [C_STATE_C7S_LONG_LAT] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(2),
+ .power = 700,
+ .resource = MWAIT_RES(3, 3),
+ },
+ [C_STATE_C8] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(3),
+ .power = 600,
+ .resource = MWAIT_RES(4, 0),
+ },
+ [C_STATE_C9] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(4),
+ .power = 500,
+ .resource = MWAIT_RES(5, 0),
+ },
+ [C_STATE_C10] = {
+ .latency = C_STATE_LATENCY_FROM_LAT_REG(5),
+ .power = 400,
+ .resource = MWAIT_RES(6, 0),
+ },
+};
+
+static int cstate_set_s0ix[3] = {
+ C_STATE_C1E,
+ C_STATE_C7S_LONG_LAT,
+ C_STATE_C10
+};
+
+static int cstate_set_non_s0ix[3] = {
+ C_STATE_C1E,
+ C_STATE_C3,
+ C_STATE_C7S_LONG_LAT
+};
+
+static int get_cores_per_package(void)
+{
+ struct cpuinfo_x86 c;
+ struct cpuid_result result;
+ int cores = 1;
+
+ get_fms(&c, cpuid_eax(1));
+ if (c.x86 != 6)
+ return 1;
+
+ result = cpuid_ext(0xb, 1);
+ cores = result.ebx & 0xff;
+
+ return cores;
+}
+
+static acpi_tstate_t tss_table_fine[] = {
+ { 100, 1000, 0, 0x00, 0 },
+ { 94, 940, 0, 0x1f, 0 },
+ { 88, 880, 0, 0x1e, 0 },
+ { 82, 820, 0, 0x1d, 0 },
+ { 75, 760, 0, 0x1c, 0 },
+ { 69, 700, 0, 0x1b, 0 },
+ { 63, 640, 0, 0x1a, 0 },
+ { 57, 580, 0, 0x19, 0 },
+ { 50, 520, 0, 0x18, 0 },
+ { 44, 460, 0, 0x17, 0 },
+ { 38, 400, 0, 0x16, 0 },
+ { 32, 340, 0, 0x15, 0 },
+ { 25, 280, 0, 0x14, 0 },
+ { 19, 220, 0, 0x13, 0 },
+ { 13, 160, 0, 0x12, 0 },
+};
+
+static acpi_tstate_t tss_table_coarse[] = {
+ { 100, 1000, 0, 0x00, 0 },
+ { 88, 875, 0, 0x1f, 0 },
+ { 75, 750, 0, 0x1e, 0 },
+ { 63, 625, 0, 0x1d, 0 },
+ { 50, 500, 0, 0x1c, 0 },
+ { 38, 375, 0, 0x1b, 0 },
+ { 25, 250, 0, 0x1a, 0 },
+ { 13, 125, 0, 0x19, 0 },
+};
+
+static void generate_T_state_entries(int core, int cores_per_package)
+{
+ /* Indicate SW_ALL coordination for T-states */
+ acpigen_write_TSD_package(core, cores_per_package, SW_ALL);
+
+ /* Indicate FFixedHW so OS will use MSR */
+ acpigen_write_empty_PTC();
+
+ /* Set a T-state limit that can be modified in NVS */
+ acpigen_write_TPC("\\TLVL");
+
+ /*
+ * CPUID.(EAX=6):EAX[5] indicates support
+ * for extended throttle levels.
+ */
+ if (cpuid_eax(6) & (1 << 5))
+ acpigen_write_TSS_package(
+ ARRAY_SIZE(tss_table_fine), tss_table_fine);
+ else
+ acpigen_write_TSS_package(
+ ARRAY_SIZE(tss_table_coarse), tss_table_coarse);
+}
+
+static void generate_C_state_entries(void)
+{
+ acpi_cstate_t map[3];
+ int *set;
+ int i;
+
+ config_t *config = config_of_soc();
+
+ if (config->s0ix_enable)
+ set = cstate_set_s0ix;
+ else
+ set = cstate_set_non_s0ix;
+
+ for (i = 0; i < 3; i++) {
+ memcpy(&map[i], &cstate_map[set[i]], sizeof(acpi_cstate_t));
+ map[i].ctype = i + 1;
+ }
+
+ /* Generate C-state tables */
+ acpigen_write_CST_package(map, ARRAY_SIZE(map));
+}
+
+static int calculate_power(int tdp, int p1_ratio, int ratio)
+{
+ u32 m;
+ u32 power;
+
+ /*
+ * M = ((1.1 - ((p1_ratio - ratio) * 0.00625)) / 1.1) ^ 2
+ *
+ * Power = (ratio / p1_ratio) * m * tdp
+ */
+
+ m = (110000 - ((p1_ratio - ratio) * 625)) / 11;
+ m = (m * m) / 1000;
+
+ power = ((ratio * 100000 / p1_ratio) / 100);
+ power *= (m / 100) * (tdp / 1000);
+ power /= 1000;
+
+ return (int)power;
+}
+
+static void generate_P_state_entries(int core, int cores_per_package)
+{
+ int ratio_min, ratio_max, ratio_turbo, ratio_step;
+ int coord_type, power_max, power_unit, num_entries;
+ int ratio, power, clock, clock_max;
+ msr_t msr;
+
+ /* Determine P-state coordination type from MISC_PWR_MGMT[0] */
+ msr = rdmsr(MSR_MISC_PWR_MGMT);
+ if (msr.lo & MISC_PWR_MGMT_EIST_HW_DIS)
+ coord_type = SW_ANY;
+ else
+ coord_type = HW_ALL;
+
+ /* Get bus ratio limits and calculate clock speeds */
+ msr = rdmsr(MSR_PLATFORM_INFO);
+ ratio_min = (msr.hi >> (40-32)) & 0xff; /* Max Efficiency Ratio */
+
+ /* Determine if this CPU has configurable TDP */
+ if (cpu_config_tdp_levels()) {
+ /* Set max ratio to nominal TDP ratio */
+ msr = rdmsr(MSR_CONFIG_TDP_NOMINAL);
+ ratio_max = msr.lo & 0xff;
+ } else {
+ /* Max Non-Turbo Ratio */
+ ratio_max = (msr.lo >> 8) & 0xff;
+ }
+ clock_max = ratio_max * CPU_BCLK;
+
+ /* Calculate CPU TDP in mW */
+ msr = rdmsr(MSR_PKG_POWER_SKU_UNIT);
+ power_unit = 2 << ((msr.lo & 0xf) - 1);
+ msr = rdmsr(MSR_PKG_POWER_SKU);
+ power_max = ((msr.lo & 0x7fff) / power_unit) * 1000;
+
+ /* Write _PCT indicating use of FFixedHW */
+ acpigen_write_empty_PCT();
+
+ /* Write _PPC with no limit on supported P-state */
+ acpigen_write_PPC_NVS();
+
+ /* Write PSD indicating configured coordination type */
+ acpigen_write_PSD_package(core, 1, coord_type);
+
+ /* Add P-state entries in _PSS table */
+ acpigen_write_name("_PSS");
+
+ /* Determine ratio points */
+ ratio_step = PSS_RATIO_STEP;
+ num_entries = (ratio_max - ratio_min) / ratio_step;
+ while (num_entries > PSS_MAX_ENTRIES-1) {
+ ratio_step <<= 1;
+ num_entries >>= 1;
+ }
+
+ /* P[T] is Turbo state if enabled */
+ if (get_turbo_state() == TURBO_ENABLED) {
+ /* _PSS package count including Turbo */
+ acpigen_write_package(num_entries + 2);
+
+ msr = rdmsr(MSR_TURBO_RATIO_LIMIT);
+ ratio_turbo = msr.lo & 0xff;
+
+ /* Add entry for Turbo ratio */
+ acpigen_write_PSS_package(
+ clock_max + 1, /*MHz*/
+ power_max, /*mW*/
+ PSS_LATENCY_TRANSITION, /*lat1*/
+ PSS_LATENCY_BUSMASTER, /*lat2*/
+ ratio_turbo << 8, /*control*/
+ ratio_turbo << 8); /*status*/
+ } else {
+ /* _PSS package count without Turbo */
+ acpigen_write_package(num_entries + 1);
+ }
+
+ /* First regular entry is max non-turbo ratio */
+ acpigen_write_PSS_package(
+ clock_max, /*MHz*/
+ power_max, /*mW*/
+ PSS_LATENCY_TRANSITION, /*lat1*/
+ PSS_LATENCY_BUSMASTER, /*lat2*/
+ ratio_max << 8, /*control*/
+ ratio_max << 8); /*status*/
+
+ /* Generate the remaining entries */
+ for (ratio = ratio_min + ((num_entries - 1) * ratio_step);
+ ratio >= ratio_min; ratio -= ratio_step) {
+
+ /* Calculate power at this ratio */
+ power = calculate_power(power_max, ratio_max, ratio);
+ clock = ratio * CPU_BCLK;
+
+ acpigen_write_PSS_package(
+ clock, /*MHz*/
+ power, /*mW*/
+ PSS_LATENCY_TRANSITION, /*lat1*/
+ PSS_LATENCY_BUSMASTER, /*lat2*/
+ ratio << 8, /*control*/
+ ratio << 8); /*status*/
+ }
+
+ /* Fix package length */
+ acpigen_pop_len();
+}
+
+void generate_cpu_entries(const struct device *device)
+{
+ int coreID, cpuID, pcontrol_blk = ACPI_BASE_ADDRESS, plen = 6;
+ int totalcores = dev_count_cpu();
+ int cores_per_package = get_cores_per_package();
+ int numcpus = totalcores/cores_per_package;
+
+ printk(BIOS_DEBUG, "Found %d CPU(s) with %d core(s) each.\n",
+ numcpus, cores_per_package);
+
+ for (cpuID = 1; cpuID <= numcpus; cpuID++) {
+ for (coreID = 1; coreID <= cores_per_package; coreID++) {
+ if (coreID > 1) {
+ pcontrol_blk = 0;
+ plen = 0;
+ }
+
+ /* Generate processor \_SB.CPUx */
+ acpigen_write_processor(
+ (cpuID - 1) * cores_per_package+coreID - 1,
+ pcontrol_blk, plen);
+
+ /* Generate P-state tables */
+ generate_P_state_entries(
+ coreID - 1, cores_per_package);
+
+ /* Generate C-state tables */
+ generate_C_state_entries();
+
+ /* Generate T-state tables */
+ generate_T_state_entries(
+ cpuID - 1, cores_per_package);
+
+ acpigen_pop_len();
+ }
+ }
+
+ /* PPKG is usually used for thermal management
+ of the first and only package. */
+ acpigen_write_processor_package("PPKG", 0, cores_per_package);
+
+ /* Add a method to notify processor nodes */
+ acpigen_write_processor_cnot(cores_per_package);
+}
diff --git a/src/soc/intel/broadwell/pch/Makefile.inc b/src/soc/intel/broadwell/pch/Makefile.inc
index 1c196136c4..119534fccd 100644
--- a/src/soc/intel/broadwell/pch/Makefile.inc
+++ b/src/soc/intel/broadwell/pch/Makefile.inc
@@ -1,5 +1,6 @@
bootblock-y += bootblock.c
+ramstage-y += acpi.c
ramstage-y += adsp.c
romstage-y += early_pch.c
ramstage-$(CONFIG_ELOG) += elog.c
diff --git a/src/soc/intel/broadwell/pch/acpi.c b/src/soc/intel/broadwell/pch/acpi.c
new file mode 100644
index 0000000000..712bb46f8a
--- /dev/null
+++ b/src/soc/intel/broadwell/pch/acpi.c
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <acpi/acpi_gnvs.h>
+#include <acpi/acpigen.h>
+#include <arch/ioapic.h>
+#include <arch/smp/mpspec.h>
+#include <cbmem.h>
+#include <device/pci_ops.h>
+#include <cpu/x86/smm.h>
+#include <console/console.h>
+#include <types.h>
+#include <string.h>
+#include <arch/cpu.h>
+#include <cpu/x86/msr.h>
+#include <cpu/intel/turbo.h>
+#include <ec/google/chromeec/ec.h>
+#include <vendorcode/google/chromeos/gnvs.h>
+#include <soc/acpi.h>
+#include <soc/cpu.h>
+#include <soc/iomap.h>
+#include <soc/lpc.h>
+#include <soc/msr.h>
+#include <soc/pci_devs.h>
+#include <soc/pm.h>
+#include <soc/systemagent.h>
+#include <soc/intel/broadwell/chip.h>
+
+unsigned long acpi_fill_madt(unsigned long current)
+{
+ int sci = acpi_sci_irq();
+ acpi_madt_irqoverride_t *irqovr;
+ uint16_t flags = MP_IRQ_TRIGGER_LEVEL;
+
+ /* Local APICs */
+ current = acpi_create_madt_lapics(current);
+
+ /* IOAPIC */
+ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *)current, 2, IO_APIC_ADDR, 0);
+
+ /* INT_SRC_OVR */
+ irqovr = (void *)current;
+ current += acpi_create_madt_irqoverride(irqovr, 0, 0, 2, 0);
+
+ if (sci >= 20)
+ flags |= MP_IRQ_POLARITY_LOW;
+ else
+ flags |= MP_IRQ_POLARITY_HIGH;
+
+ /* SCI */
+ irqovr = (void *)current;
+ current += acpi_create_madt_irqoverride(irqovr, 0, sci, sci, flags);
+
+ return current;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 23:16:05 +0000