From c88c54c667124851eb82c5271536fd0f4ad6616c Mon Sep 17 00:00:00 2001 From: Duncan Laurie Date: Wed, 30 Apr 2014 16:36:13 -0700 Subject: broadwell: add new intel SOC broadwell: Import files from haswell/lynxpoint into soc/broadwell Reviewed-on: https://chromium-review.googlesource.com/198425 (cherry picked from commit 178400e5709d676dd41e6a75df06faa829e0e3af) broadwell: Unify and clean up license Reviewed-on: https://chromium-review.googlesource.com/198426 (cherry picked from commit 30d3c25a0abc76be68477c39a654b95a5975f55d) broadwell: pch.h: split PM into new header Reviewed-on: https://chromium-review.googlesource.com/198427 (cherry picked from commit 97a8d0b051f476d0edc06301f57326a718df1373) broadwell: pch.h: split RCBA into new header Reviewed-on: https://chromium-review.googlesource.com/198428 (cherry picked from commit fa217361b28fdb8d3a3e85f070dfaf13c0d48135) broadwell: pch.h: split SATA into new header Reviewed-on: https://chromium-review.googlesource.com/198429 (cherry picked from commit bf8795ca92f9f0467e7869c701038abb4529ac71) broadwell: pch.h: split SPI into new header Reviewed-on: https://chromium-review.googlesource.com/198550 (cherry picked from commit 099af14676a2654ca3e24e66d7b9f0b4ab13cd14) broadwell: pch.h: split SerialIO into new header Reviewed-on: https://chromium-review.googlesource.com/198551 (cherry picked from commit 4f3c028686aed78fb07b8792dcf46aebd2268ea6) broadwell: pch.h: split LPC into new header Reviewed-on: https://chromium-review.googlesource.com/198552 (cherry picked from commit 10bad5bbb6739c0277fd5330d26a89d60fd5c102) broadwell: pch.h: split GPIO into new header and clean up Reviewed-on: https://chromium-review.googlesource.com/198553 (cherry picked from commit 9c97532460562215b78e10b011a29e092a07f3e5) broadwell: pch.h: split USB into new headers Reviewed-on: https://chromium-review.googlesource.com/198554 (cherry picked from commit 86ef1a45a2e5f307467b3be48e377569f37b3068) broadwell: Split IOBP into separate files Reviewed-on: https://chromium-review.googlesource.com/198734 (cherry picked from commit f93b8bda71728f1383937ad675d2d5fb5a927600) broadwell: smbus: Extract common code and split header Reviewed-on: https://chromium-review.googlesource.com/198735 (cherry picked from commit 8052030a9d6b22e8a19938fa9b93e90d08f0057d) broadwell: Create iomap.h header with platform base addresses Reviewed-on: https://chromium-review.googlesource.com/198736 (cherry picked from commit b35947d070b28871637dfe2b930a9f2be80958ee) broadwell: Add header for platform PCI devices Reviewed-on: https://chromium-review.googlesource.com/198737 (cherry picked from commit 6ac4e56db6e489bb9eaf91a0c3c543399f691500) broadwell: Split SMM related defines/prototypes to new header Reviewed-on: https://chromium-review.googlesource.com/198738 (cherry picked from commit 2a2595067077cd918bfd48cad79a684b8e1ff0f4) broadwell: cpu.h: Split MSR defines to separate header Reviewed-on: https://chromium-review.googlesource.com/198739 (cherry picked from commit 01148cd2c9edd97cd0c8ef3cfed58bc8c33eb805) broadwell: Create romstage header file Reviewed-on: https://chromium-review.googlesource.com/198740 (cherry picked from commit 31c91e811b9e07e7bcba6b9f8f5720a31322eb21) broadwell: Create ram stage header file Reviewed-on: https://chromium-review.googlesource.com/198741 (cherry picked from commit 93dde85f98d43d4a1886b59004d1bab4924ad621) broadwell: Add reference code data interface Reviewed-on: https://chromium-review.googlesource.com/198743 (cherry picked from commit 9059b8e2308892a48c838c3099404c9cf450df95) broadwell: Clean up ACPI NVS region Reviewed-on: https://chromium-review.googlesource.com/198897 (cherry picked from commit d83cc82c36661556eb1e2e437b7ac51d5b8e4a14) broadwell: Move CTDP ACPI methods to new file Reviewed-on: https://chromium-review.googlesource.com/198898 (cherry picked from commit fc1e711290df304d18c558d697eea8a5e57061b2) broadwell: Split EHCI and XHCI ACPI devices Reviewed-on: https://chromium-review.googlesource.com/198899 (cherry picked from commit 26f437b27e00dbd5c92ea22e76404633a62fb7ca) broadwell: ACPI: Clean up SerialIO ACPI code Reviewed-on: https://chromium-review.googlesource.com/198910 (cherry picked from commit ea3cd39566c1bb2ead463a6253b6204a62545d35) broadwell: ACPI: Remove special handling of LPT-LP chipset Reviewed-on: https://chromium-review.googlesource.com/198911 (cherry picked from commit 2c54df159bf6759c8f866628e83541de6f4e28f6) broadwell: ACPI: Clean up use of base address defines Reviewed-on: https://chromium-review.googlesource.com/198912 (cherry picked from commit 34e4788955bceff01631fd0b4dbf0aa24cf56b75) broadwell: ACPI: Clean up and fix formatting Reviewed-on: https://chromium-review.googlesource.com/198913 (cherry picked from commit bc0f7c6d2f95681eb987bb6ff6baf2d16cc77050) broadwell: Add header for ACPI defines and prototypes Reviewed-on: https://chromium-review.googlesource.com/198914 (cherry picked from commit 9951e7931942d2921f92f6e094b1cc32c190eab9) broadwell: Add reset_system function and header Reviewed-on: https://chromium-review.googlesource.com/198915 (cherry picked from commit 6d1efb94bd39bcd6f7e3e0de2f3299a384b109ef) broadwell: Move PCODE MMIO defines to systemagent.h Reviewed-on: https://chromium-review.googlesource.com/198916 (cherry picked from commit abb5f87e548fbde3a08e14a18714b4e4391c955f) broadwell: Unify chip.h and add chip.c Reviewed-on: https://chromium-review.googlesource.com/198917 (cherry picked from commit a9c2d7ff3afa1e2a10be85ccc72b7db0f2aaafe1) broadwell: Rename HASWELL_BCLK to CPU_BCLK Reviewed-on: https://chromium-review.googlesource.com/198918 (cherry picked from commit 65ac1a07abaf14eb42fec6c5df67d2d3688ad5a1) broadwell: Clean up broadwell/cpu.h Reviewed-on: https://chromium-review.googlesource.com/198919 (cherry picked from commit 17353803babc8ace279e105c012130678226144e) broadwell: Clean up broadwell/systemagent.h Reviewed-on: https://chromium-review.googlesource.com/198920 (cherry picked from commit 49d7a023f3ff04a65d16622aa9b2fa6004b693ae) broadwell: Clean up broadwell/pch.h Reviewed-on: https://chromium-review.googlesource.com/198921 (cherry picked from commit 17da652b4408a91fcfea99dd35fe9f9e1bdcf03b) broadwell: Clean up management engine driver Reviewed-on: https://chromium-review.googlesource.com/198922 (cherry picked from commit 4fce5fbb56dc4f31b77e5ada05463c043ad5be72) broadwell: Add common CPUID and PCI Device ID defines Reviewed-on: https://chromium-review.googlesource.com/198923 (cherry picked from commit c6bf20309f33168ea2cc4634cbda5ec242824ba8) broadwell: Clean up and expand report_platform Reviewed-on: https://chromium-review.googlesource.com/198924 (cherry picked from commit 5082d4824db149e867a2cd8be34c932b03754022) broadwell: Clean up the bootblock code Reviewed-on: https://chromium-review.googlesource.com/198925 (cherry picked from commit ba0206ab76fe0b6834a14dc57f400d139094623c) broadwell: Clean up ramstage device and driver operations Reviewed-on: https://chromium-review.googlesource.com/199180 (cherry picked from commit d8fc9daf129738713a5059286b7ead004f3b7569) broadwell: Clean up XHCI and EHCI ramstage drivers Reviewed-on: https://chromium-review.googlesource.com/199181 (cherry picked from commit d355247333a828a146ce7cf9b92a63da74119c1d) broadwell: Clean up gpio handling code Reviewed-on: https://chromium-review.googlesource.com/199182 (cherry picked from commit d62cef1970fe75f8166315016b3d8415cddcab20) broadwell: Clean up the PCH generic code Reviewed-on: https://chromium-review.googlesource.com/199183 (cherry picked from commit 3b93b3ea79965d5ac831bf9015e49330f157b0ff) broadwell: Move get_top_of_ram() and cbmem_top() to memmap.c Reviewed-on: https://chromium-review.googlesource.com/199184 (cherry picked from commit 68955ba4ff8b49ff466d7badaa934bd143026ba7) broadwell: Clean up pmutil.c Reviewed-on: https://chromium-review.googlesource.com/199185 (cherry picked from commit b6fb672ae879e17422f7449f70c3669055096f84) broadwell: pmutil: Add new acpi_sci_irq() function Reviewed-on: https://chromium-review.googlesource.com/199186 (cherry picked from commit 80ad8bb9bdc75f180e667861fed42a3844226bc5) broadwell: Clean up HDA ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199187 (cherry picked from commit b4962acd706eaa66c1c3ef4d22eba313642fbb2d) broadwell: Clean up cache_as_ram assembly Reviewed-on: https://chromium-review.googlesource.com/199188 (cherry picked from commit 8a457b82610b604ae7f69e2500815ce411c2d02d) broadwell: romstage: Separate stack helper functions Reviewed-on: https://chromium-review.googlesource.com/199189 (cherry picked from commit c220383c90466fc2dbf4b6107679b08ecb4aadad) broadwell: Add function to read WPSR from SPI Reviewed-on: https://chromium-review.googlesource.com/199190 (cherry picked from commit 935404da1157d606b913eff6c2635ae898e9980a) broadwell: Clean up SMBUS code in romstage and ramstage Reviewed-on: https://chromium-review.googlesource.com/199191 (cherry picked from commit 6ae9d93c1a6f14da6429a4e5b01619c9ccaefdaa) broadwell: SPI: Clean up romstage and ramstage code Reviewed-on: https://chromium-review.googlesource.com/199192 (cherry picked from commit 28ffd71a416aee2ab54bc5d782cfeef31d4d30bf) broadwell: Clean up PCIe root port ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199193 (cherry picked from commit 781f3a1b72c72f0bb05f5524edec471ad13ec90e) broadwell: Clean up minihd ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199194 (cherry picked from commit a52d275e41fdcbf9895d07350725609d9be1ff0e) broadwell: Update romstage main to follow baytrail format Reviewed-on: https://chromium-review.googlesource.com/199361 (cherry picked from commit 0678c739af84c871922ffba5594132b25e471ddd) broadwell: Add CPU set_max_freq function for romstage Reviewed-on: https://chromium-review.googlesource.com/199362 (cherry picked from commit 68b0122472af27f38502d42a8a6c80678ddbbba6) broadwell: romstage: Add chipset_power_state implementation Reviewed-on: https://chromium-review.googlesource.com/199363 (cherry picked from commit 761cec3b6bb9bde579c3214f3f1196f65700757c) broadwell: romstage: Convert systemagent init to reg_script Reviewed-on: https://chromium-review.googlesource.com/199364 (cherry picked from commit c2ea2d3a0c7555a353fb9a1d4a63e773ac8961b2) broadwell: romstage: Convert pch init to reg_script Reviewed-on: https://chromium-review.googlesource.com/199365 (cherry picked from commit 4383de5846e97ca5aee6dd210459d8dba0af981c) broadwell: elog: Use chipset_power_state for events Reviewed-on: https://chromium-review.googlesource.com/199366 (cherry picked from commit 0ef5961ebe3a7037d5fbe361fbc70a87ac2edad9) broadwell: Clean up SATA ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199367 (cherry picked from commit ffa5743f74551bd48aa7e5445ce7cd9dc7b07ce8) broadwell: Update ramstage graphics driver to support broadwell Reviewed-on: https://chromium-review.googlesource.com/199368 (cherry picked from commit bb01deb8bbed56f15e1143504e4cf012ecf5a281) broadwell: Update raminit to follow baytrail layout Reviewed-on: https://chromium-review.googlesource.com/199369 (cherry picked from commit 3f25c23dc58f85d2521916cd6edbe9deeeb8d523) broadwell: Update and unify the finalize steps Reviewed-on: https://chromium-review.googlesource.com/199390 (cherry picked from commit ddc4c116b42d38dfdfc45ef4388fbfab32ca48fa) broadwell: Clean up SMM code Reviewed-on: https://chromium-review.googlesource.com/199391 (cherry picked from commit 8295e56c9b643fd4b9267d70b5efd0cf94dd67dd) broadwell: Clean up LPC ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199392 (cherry picked from commit 28326aeaaf304c9262866588d91b79b37d1d9a2e) broadwell: Clean up systemagent ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199393 (cherry picked from commit 749988fff07eab8d2c9ebc731e3ed9e427b3f7b3) broadwell: Move C-state configuration information to acpi.c Reviewed-on: https://chromium-review.googlesource.com/199394 (cherry picked from commit 198a3cd5cbd009be406298cbb53163f075fe9990) broadwell: Clean up CPU ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199395 (cherry picked from commit 8159689bba479bab6fd2e949e3e1c3f817088969) broadwell: Do not reserve SMM relocation region Reviewed-on: https://chromium-review.googlesource.com/199402 (cherry picked from commit e2ab52340e3d3a97a3f8dbdad8fac9f7769d1b4c) broadwell: Add an early ramstage driver Reviewed-on: https://chromium-review.googlesource.com/199403 (cherry picked from commit c7a8c867101b49a7f9f17ec1a8777a8db145f3e3) broadwell: Support for second reference code binary Reviewed-on: https://chromium-review.googlesource.com/199404 (cherry picked from commit abb99b36e97c4f739b23abed6146fea370bbbec2) broadwell: Clean up serialio init code Reviewed-on: https://chromium-review.googlesource.com/199405 (cherry picked from commit e09a1f8520a7b72451a1e2068b200f7c5451f489) broadwell: acpi: Add function to fill out FADT Reviewed-on: https://chromium-review.googlesource.com/199406 (cherry picked from commit 7e58f43e46d4382cf4541057f81fe6be3e4d6e74) broadwell: Update C-state table creation Reviewed-on: https://chromium-review.googlesource.com/199407 (cherry picked from commit 68b1f70e32e1d0c6fc4332dce402ad78334e0063) broadwell: acpi: Clean up acpi table creation code Reviewed-on: https://chromium-review.googlesource.com/199408 (cherry picked from commit 49088b312b159bb17a9330eda6a88d6f324ea146) broadwell: acpi: Add ACPI table create helper functions Reviewed-on: https://chromium-review.googlesource.com/199409 (cherry picked from commit 344c3c511d0341457525ef4d6eb70201404fc62c) broadwell: Add soc/intel/broadwell Makefiles Reviewed-on: https://chromium-review.googlesource.com/199410 (cherry picked from commit ea8f97738eadd3b0b6a642754df7a7d22e547ffc) broadwell: Add Kconfig for broadwell soc Reviewed-on: https://chromium-review.googlesource.com/199411 (cherry picked from commit 8c99038a5c20812497619134c66d45bc4f21c8fe) Squashed 78 commits for broadwell that form a solid code base. Change-Id: I365ca9a45978b5e0cc5237f884e20a44f62a0e63 Signed-off-by: Isaac Christensen Reviewed-on: http://review.coreboot.org/6964 Tested-by: build bot (Jenkins) Reviewed-by: Duncan Laurie Reviewed-by: Marc Jones --- src/soc/intel/broadwell/cpu.c | 722 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 722 insertions(+) create mode 100644 src/soc/intel/broadwell/cpu.c (limited to 'src/soc/intel/broadwell/cpu.c') diff --git a/src/soc/intel/broadwell/cpu.c b/src/soc/intel/broadwell/cpu.c new file mode 100644 index 0000000000..3676865efb --- /dev/null +++ b/src/soc/intel/broadwell/cpu.c @@ -0,0 +1,722 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007-2009 coresystems GmbH + * Copyright (C) 2014 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Convert time in seconds to POWER_LIMIT_1_TIME MSR value */ +static const u8 power_limit_time_sec_to_msr[] = { + [0] = 0x00, + [1] = 0x0a, + [2] = 0x0b, + [3] = 0x4b, + [4] = 0x0c, + [5] = 0x2c, + [6] = 0x4c, + [7] = 0x6c, + [8] = 0x0d, + [10] = 0x2d, + [12] = 0x4d, + [14] = 0x6d, + [16] = 0x0e, + [20] = 0x2e, + [24] = 0x4e, + [28] = 0x6e, + [32] = 0x0f, + [40] = 0x2f, + [48] = 0x4f, + [56] = 0x6f, + [64] = 0x10, + [80] = 0x30, + [96] = 0x50, + [112] = 0x70, + [128] = 0x11, +}; + +/* Convert POWER_LIMIT_1_TIME MSR value to seconds */ +static const u8 power_limit_time_msr_to_sec[] = { + [0x00] = 0, + [0x0a] = 1, + [0x0b] = 2, + [0x4b] = 3, + [0x0c] = 4, + [0x2c] = 5, + [0x4c] = 6, + [0x6c] = 7, + [0x0d] = 8, + [0x2d] = 10, + [0x4d] = 12, + [0x6d] = 14, + [0x0e] = 16, + [0x2e] = 20, + [0x4e] = 24, + [0x6e] = 28, + [0x0f] = 32, + [0x2f] = 40, + [0x4f] = 48, + [0x6f] = 56, + [0x10] = 64, + [0x30] = 80, + [0x50] = 96, + [0x70] = 112, + [0x11] = 128, +}; + +u32 cpu_family_model(void) +{ + return cpuid_eax(1) & 0x0fff0ff0; +} + +u32 cpu_stepping(void) +{ + return cpuid_eax(1) & 0xf; +} + +/* Dynamically determine if the part is ULT. */ +int cpu_is_ult(void) +{ + static int ult = -1; + + if (ult < 0) { + u32 fm = cpu_family_model(); + if (fm == BROADWELL_FAMILY_ULT || fm == HASWELL_FAMILY_ULT) + ult = 1; + else + ult = 0; + } + + return ult; +} + +/* The core 100MHz BLCK is disabled in deeper c-states. One needs to calibrate + * the 100MHz BCLCK against the 24MHz BLCK to restore the clocks properly + * when a core is woken up. */ +static int pcode_ready(void) +{ + int wait_count; + const int delay_step = 10; + + wait_count = 0; + do { + if (!(MCHBAR32(BIOS_MAILBOX_INTERFACE) & MAILBOX_RUN_BUSY)) + return 0; + wait_count += delay_step; + udelay(delay_step); + } while (wait_count < 1000); + + return -1; +} + +static void calibrate_24mhz_bclk(void) +{ + int err_code; + + if (pcode_ready() < 0) { + printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready.\n"); + return; + } + + /* A non-zero value initiates the PCODE calibration. */ + MCHBAR32(BIOS_MAILBOX_DATA) = ~0; + MCHBAR32(BIOS_MAILBOX_INTERFACE) = + MAILBOX_RUN_BUSY | MAILBOX_BIOS_CMD_FSM_MEASURE_INTVL; + + if (pcode_ready() < 0) { + printk(BIOS_ERR, "PCODE: mailbox timeout on completion.\n"); + return; + } + + err_code = MCHBAR32(BIOS_MAILBOX_INTERFACE) & 0xff; + + printk(BIOS_DEBUG, "PCODE: 24MHz BLCK calibration response: %d\n", + err_code); + + /* Read the calibrated value. */ + MCHBAR32(BIOS_MAILBOX_INTERFACE) = + MAILBOX_RUN_BUSY | MAILBOX_BIOS_CMD_READ_CALIBRATION; + + if (pcode_ready() < 0) { + printk(BIOS_ERR, "PCODE: mailbox timeout on read.\n"); + return; + } + + printk(BIOS_DEBUG, "PCODE: 24MHz BLCK calibration value: 0x%08x\n", + MCHBAR32(BIOS_MAILBOX_DATA)); +} + +static u32 pcode_mailbox_read(u32 command) +{ + if (pcode_ready() < 0) { + printk(BIOS_ERR, "PCODE: mailbox timeout on wait ready.\n"); + return 0; + } + + /* Send command and start transaction */ + MCHBAR32(BIOS_MAILBOX_INTERFACE) = command | MAILBOX_RUN_BUSY; + + if (pcode_ready() < 0) { + printk(BIOS_ERR, "PCODE: mailbox timeout on completion.\n"); + return 0; + } + + /* Read mailbox */ + return MCHBAR32(BIOS_MAILBOX_DATA); +} + +static void initialize_vr_config(void) +{ + msr_t msr; + + printk(BIOS_DEBUG, "Initializing VR config.\n"); + + /* Configure VR_CURRENT_CONFIG. */ + msr = rdmsr(MSR_VR_CURRENT_CONFIG); + /* Preserve bits 63 and 62. Bit 62 is PSI4 enable, but it is only valid + * on ULT systems. */ + msr.hi &= 0xc0000000; + msr.hi |= (0x01 << (52 - 32)); /* PSI3 threshold - 1A. */ + msr.hi |= (0x05 << (42 - 32)); /* PSI2 threshold - 5A. */ + msr.hi |= (0x0f << (32 - 32)); /* PSI1 threshold - 15A. */ + msr.hi |= (1 << (62 - 32)); /* Enable PSI4 */ + /* Leave the max instantaneous current limit (12:0) to default. */ + wrmsr(MSR_VR_CURRENT_CONFIG, msr); + + /* Configure VR_MISC_CONFIG MSR. */ + msr = rdmsr(MSR_VR_MISC_CONFIG); + /* Set the IOUT_SLOPE scalar applied to dIout in U10.1.9 format. */ + msr.hi &= ~(0x3ff << (40 - 32)); + msr.hi |= (0x200 << (40 - 32)); /* 1.0 */ + /* Set IOUT_OFFSET to 0. */ + msr.hi &= ~0xff; + /* Set exit ramp rate to fast. */ + msr.hi |= (1 << (50 - 32)); + /* Set entry ramp rate to slow. */ + msr.hi &= ~(1 << (51 - 32)); + /* Enable decay mode on C-state entry. */ + msr.hi |= (1 << (52 - 32)); + /* Set the slow ramp rate to be fast ramp rate / 4 */ + msr.hi &= ~(0x3 << (53 - 32)); + msr.hi |= (0x01 << (53 - 32)); + /* Set MIN_VID (31:24) to allow CPU to have full control. */ + msr.lo &= ~0xff000000; + wrmsr(MSR_VR_MISC_CONFIG, msr); + + /* Configure VR_MISC_CONFIG2 MSR. */ + msr = rdmsr(MSR_VR_MISC_CONFIG2); + msr.lo &= ~0xffff; + /* Allow CPU to control minimum voltage completely (15:8) and + * set the fast ramp voltage to 1110mV (0x6f in 10mV steps). */ + msr.lo |= 0x006f; + wrmsr(MSR_VR_MISC_CONFIG2, msr); +} + +static void configure_pch_power_sharing(void) +{ + u32 pch_power, pch_power_ext, pmsync, pmsync2; + int i; + + /* Read PCH Power levels from PCODE */ + pch_power = pcode_mailbox_read(MAILBOX_BIOS_CMD_READ_PCH_POWER); + pch_power_ext = pcode_mailbox_read(MAILBOX_BIOS_CMD_READ_PCH_POWER_EXT); + + printk(BIOS_INFO, "PCH Power: PCODE Levels 0x%08x 0x%08x\n", + pch_power, pch_power_ext); + + pmsync = RCBA32(PMSYNC_CONFIG); + pmsync2 = RCBA32(PMSYNC_CONFIG2); + + /* Program PMSYNC_TPR_CONFIG PCH power limit values + * pmsync[0:4] = mailbox[0:5] + * pmsync[8:12] = mailbox[6:11] + * pmsync[16:20] = mailbox[12:17] + */ + for (i = 0; i < 3; i++) { + u32 level = pch_power & 0x3f; + pch_power >>= 6; + pmsync &= ~(0x1f << (i * 8)); + pmsync |= (level & 0x1f) << (i * 8); + } + RCBA32(PMSYNC_CONFIG) = pmsync; + + /* Program PMSYNC_TPR_CONFIG2 Extended PCH power limit values + * pmsync2[0:4] = mailbox[23:18] + * pmsync2[8:12] = mailbox_ext[6:11] + * pmsync2[16:20] = mailbox_ext[12:17] + * pmsync2[24:28] = mailbox_ext[18:22] + */ + pmsync2 &= ~0x1f; + pmsync2 |= pch_power & 0x1f; + + for (i = 1; i < 4; i++) { + u32 level = pch_power_ext & 0x3f; + pch_power_ext >>= 6; + pmsync2 &= ~(0x1f << (i * 8)); + pmsync2 |= (level & 0x1f) << (i * 8); + } + RCBA32(PMSYNC_CONFIG2) = pmsync2; +} + +int cpu_config_tdp_levels(void) +{ + msr_t platform_info; + + /* Bits 34:33 indicate how many levels supported */ + platform_info = rdmsr(MSR_PLATFORM_INFO); + return (platform_info.hi >> 1) & 3; +} + +/* + * Configure processor power limits if possible + * This must be done AFTER set of BIOS_RESET_CPL + */ +void set_power_limits(u8 power_limit_1_time) +{ + msr_t msr = rdmsr(MSR_PLATFORM_INFO); + msr_t limit; + unsigned power_unit; + unsigned tdp, min_power, max_power, max_time; + u8 power_limit_1_val; + + if (power_limit_1_time > ARRAY_SIZE(power_limit_time_sec_to_msr)) + power_limit_1_time = 28; + + if (!(msr.lo & PLATFORM_INFO_SET_TDP)) + return; + + /* Get units */ + msr = rdmsr(MSR_PKG_POWER_SKU_UNIT); + power_unit = 2 << ((msr.lo & 0xf) - 1); + + /* Get power defaults for this SKU */ + msr = rdmsr(MSR_PKG_POWER_SKU); + tdp = msr.lo & 0x7fff; + min_power = (msr.lo >> 16) & 0x7fff; + max_power = msr.hi & 0x7fff; + max_time = (msr.hi >> 16) & 0x7f; + + printk(BIOS_DEBUG, "CPU TDP: %u Watts\n", tdp / power_unit); + + if (power_limit_time_msr_to_sec[max_time] > power_limit_1_time) + power_limit_1_time = power_limit_time_msr_to_sec[max_time]; + + if (min_power > 0 && tdp < min_power) + tdp = min_power; + + if (max_power > 0 && tdp > max_power) + tdp = max_power; + + power_limit_1_val = power_limit_time_sec_to_msr[power_limit_1_time]; + + /* Set long term power limit to TDP */ + limit.lo = 0; + limit.lo |= tdp & PKG_POWER_LIMIT_MASK; + limit.lo |= PKG_POWER_LIMIT_EN; + limit.lo |= (power_limit_1_val & PKG_POWER_LIMIT_TIME_MASK) << + PKG_POWER_LIMIT_TIME_SHIFT; + + /* Set short term power limit to 1.25 * TDP */ + limit.hi = 0; + limit.hi |= ((tdp * 125) / 100) & PKG_POWER_LIMIT_MASK; + limit.hi |= PKG_POWER_LIMIT_EN; + /* Power limit 2 time is only programmable on server SKU */ + + wrmsr(MSR_PKG_POWER_LIMIT, limit); + + /* Set power limit values in MCHBAR as well */ + MCHBAR32(MCH_PKG_POWER_LIMIT_LO) = limit.lo; + MCHBAR32(MCH_PKG_POWER_LIMIT_HI) = limit.hi; + + /* Set DDR RAPL power limit by copying from MMIO to MSR */ + msr.lo = MCHBAR32(MCH_DDR_POWER_LIMIT_LO); + msr.hi = MCHBAR32(MCH_DDR_POWER_LIMIT_HI); + wrmsr(MSR_DDR_RAPL_LIMIT, msr); + + /* Use nominal TDP values for CPUs with configurable TDP */ + if (cpu_config_tdp_levels()) { + msr = rdmsr(MSR_CONFIG_TDP_NOMINAL); + limit.hi = 0; + limit.lo = msr.lo & 0xff; + wrmsr(MSR_TURBO_ACTIVATION_RATIO, limit); + } +} + +static void configure_c_states(void) +{ + msr_t msr; + + msr = rdmsr(MSR_PMG_CST_CONFIG_CONTROL); + msr.lo |= (1 << 30); // Package c-state Undemotion Enable + msr.lo |= (1 << 29); // Package c-state Demotion Enable + msr.lo |= (1 << 28); // C1 Auto Undemotion Enable + msr.lo |= (1 << 27); // C3 Auto Undemotion Enable + msr.lo |= (1 << 26); // C1 Auto Demotion Enable + msr.lo |= (1 << 25); // C3 Auto Demotion Enable + msr.lo &= ~(1 << 10); // Disable IO MWAIT redirection + /* The deepest package c-state defaults to factory-configured value. */ + wrmsr(MSR_PMG_CST_CONFIG_CONTROL, msr); + + msr = rdmsr(MSR_MISC_PWR_MGMT); + msr.lo &= ~(1 << 0); // Enable P-state HW_ALL coordination + wrmsr(MSR_MISC_PWR_MGMT, msr); + + msr = rdmsr(MSR_POWER_CTL); + msr.lo |= (1 << 18); // Enable Energy Perf Bias MSR 0x1b0 + msr.lo |= (1 << 1); // C1E Enable + msr.lo |= (1 << 0); // Bi-directional PROCHOT# + wrmsr(MSR_POWER_CTL, msr); + + /* C-state Interrupt Response Latency Control 0 - package C3 latency */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_0_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_0, msr); + + /* C-state Interrupt Response Latency Control 1 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_1_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_1, msr); + + /* C-state Interrupt Response Latency Control 2 - package C6/C7 short */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | C_STATE_LATENCY_CONTROL_2_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_2, msr); + + /* C-state Interrupt Response Latency Control 3 - package C8 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | + C_STATE_LATENCY_CONTROL_3_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_3, msr); + + /* C-state Interrupt Response Latency Control 4 - package C9 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | + C_STATE_LATENCY_CONTROL_4_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_4, msr); + + /* C-state Interrupt Response Latency Control 5 - package C10 */ + msr.hi = 0; + msr.lo = IRTL_VALID | IRTL_1024_NS | + C_STATE_LATENCY_CONTROL_5_LIMIT; + wrmsr(MSR_C_STATE_LATENCY_CONTROL_5, msr); +} + +static void configure_thermal_target(void) +{ + device_t dev = SA_DEV_ROOT; + config_t *conf = dev->chip_info; + msr_t msr; + + /* Set TCC activaiton offset if supported */ + msr = rdmsr(MSR_PLATFORM_INFO); + if ((msr.lo & (1 << 30)) && conf->tcc_offset) { + msr = rdmsr(MSR_TEMPERATURE_TARGET); + msr.lo &= ~(0xf << 24); /* Bits 27:24 */ + msr.lo |= (conf->tcc_offset & 0xf) << 24; + wrmsr(MSR_TEMPERATURE_TARGET, msr); + } +} + +static void configure_misc(void) +{ + msr_t msr; + + msr = rdmsr(IA32_MISC_ENABLE); + msr.lo |= (1 << 0); /* Fast String enable */ + msr.lo |= (1 << 3); /* TM1/TM2/EMTTM enable */ + msr.lo |= (1 << 16); /* Enhanced SpeedStep Enable */ + wrmsr(IA32_MISC_ENABLE, msr); + + /* Disable Thermal interrupts */ + msr.lo = 0; + msr.hi = 0; + wrmsr(IA32_THERM_INTERRUPT, msr); + + /* Enable package critical interrupt only */ + msr.lo = 1 << 4; + msr.hi = 0; + wrmsr(IA32_PACKAGE_THERM_INTERRUPT, msr); +} + +static void enable_lapic_tpr(void) +{ + msr_t msr; + + msr = rdmsr(MSR_PIC_MSG_CONTROL); + msr.lo &= ~(1 << 10); /* Enable APIC TPR updates */ + wrmsr(MSR_PIC_MSG_CONTROL, msr); +} + +static void configure_dca_cap(void) +{ + struct cpuid_result cpuid_regs; + msr_t msr; + + /* Check feature flag in CPUID.(EAX=1):ECX[18]==1 */ + cpuid_regs = cpuid(1); + if (cpuid_regs.ecx & (1 << 18)) { + msr = rdmsr(IA32_PLATFORM_DCA_CAP); + msr.lo |= 1; + wrmsr(IA32_PLATFORM_DCA_CAP, msr); + } +} + +static void set_max_ratio(void) +{ + msr_t msr, perf_ctl; + + perf_ctl.hi = 0; + + /* Check for configurable TDP option */ + if (cpu_config_tdp_levels()) { + /* Set to nominal TDP ratio */ + msr = rdmsr(MSR_CONFIG_TDP_NOMINAL); + perf_ctl.lo = (msr.lo & 0xff) << 8; + } else { + /* Platform Info bits 15:8 give max ratio */ + msr = rdmsr(MSR_PLATFORM_INFO); + perf_ctl.lo = msr.lo & 0xff00; + } + wrmsr(IA32_PERF_CTL, perf_ctl); + + printk(BIOS_DEBUG, "cpu: frequency set to %d\n", + ((perf_ctl.lo >> 8) & 0xff) * CPU_BCLK); +} + +static void set_energy_perf_bias(u8 policy) +{ + msr_t msr; + int ecx; + + /* Determine if energy efficient policy is supported. */ + ecx = cpuid_ecx(0x6); + if (!(ecx & (1 << 3))) + return; + + /* Energy Policy is bits 3:0 */ + msr = rdmsr(IA32_ENERGY_PERFORMANCE_BIAS); + msr.lo &= ~0xf; + msr.lo |= policy & 0xf; + wrmsr(IA32_ENERGY_PERFORMANCE_BIAS, msr); + + printk(BIOS_DEBUG, "cpu: energy policy set to %u\n", policy); +} + +static void configure_mca(void) +{ + msr_t msr; + const unsigned int mcg_cap_msr = 0x179; + int i; + int num_banks; + + msr = rdmsr(mcg_cap_msr); + num_banks = msr.lo & 0xff; + msr.lo = msr.hi = 0; + /* TODO(adurbin): This should only be done on a cold boot. Also, some + * of these banks are core vs package scope. For now every CPU clears + * every bank. */ + for (i = 0; i < num_banks; i++) + wrmsr(IA32_MC0_STATUS + (i * 4), msr); +} + +#if CONFIG_USBDEBUG +static unsigned ehci_debug_addr; +#endif + +static void bsp_init_before_ap_bringup(struct bus *cpu_bus) +{ +#if CONFIG_USBDEBUG + if(!ehci_debug_addr) + ehci_debug_addr = get_ehci_debug(); + set_ehci_debug(0); +#endif + + /* Setup MTRRs based on physical address size. */ + x86_setup_fixed_mtrrs(); + x86_setup_var_mtrrs(cpuid_eax(0x80000008) & 0xff, 2); + x86_mtrr_check(); + +#if CONFIG_USBDEBUG + set_ehci_debug(ehci_debug_addr); +#endif + + initialize_vr_config(); + calibrate_24mhz_bclk(); + configure_pch_power_sharing(); +} + +/* All CPUs including BSP will run the following function. */ +static void cpu_core_init(device_t cpu) +{ + /* Clear out pending MCEs */ + configure_mca(); + + /* Enable the local cpu apics */ + enable_lapic_tpr(); + setup_lapic(); + + /* Configure C States */ + configure_c_states(); + + /* Configure Enhanced SpeedStep and Thermal Sensors */ + configure_misc(); + + /* Thermal throttle activation offset */ + configure_thermal_target(); + + /* Enable Direct Cache Access */ + configure_dca_cap(); + + /* Set energy policy */ + set_energy_perf_bias(ENERGY_POLICY_NORMAL); + + /* Set Max Ratio */ + set_max_ratio(); + + /* Enable Turbo */ + enable_turbo(); +} + +/* MP initialization support. */ +static const void *microcode_patch; +int ht_disabled; + +static int adjust_apic_id_ht_disabled(int index, int apic_id) +{ + return 2 * index; +} + +static void relocate_and_load_microcode(void *unused) +{ + /* Relocate the SMM handler. */ + smm_relocate(); + + /* After SMM relocation a 2nd microcode load is required. */ + intel_microcode_load_unlocked(microcode_patch); +} + +static void enable_smis(void *unused) +{ + /* Now that all APs have been relocated as well as the BSP let SMIs + * start flowing. */ + southbridge_smm_enable_smi(); + + /* Lock down the SMRAM space. */ + smm_lock(); +} + +static struct mp_flight_record mp_steps[] = { + MP_FR_NOBLOCK_APS(relocate_and_load_microcode, NULL, + relocate_and_load_microcode, NULL), + MP_FR_BLOCK_APS(mp_initialize_cpu, NULL, mp_initialize_cpu, NULL), + /* Wait for APs to finish initialization before proceeding. */ + MP_FR_BLOCK_APS(NULL, NULL, enable_smis, NULL), +}; + +static struct device_operations cpu_dev_ops = { + .init = cpu_core_init, +}; + +static struct cpu_device_id cpu_table[] = { + { X86_VENDOR_INTEL, CPUID_HASWELL_ULT }, + { X86_VENDOR_INTEL, CPUID_BROADWELL_C0 }, + { X86_VENDOR_INTEL, CPUID_BROADWELL_D0 }, + { 0, 0 }, +}; + +static const struct cpu_driver driver __cpu_driver = { + .ops = &cpu_dev_ops, + .id_table = cpu_table, +}; + +void broadwell_init_cpus(device_t dev) +{ + struct bus *cpu_bus = dev->link_list; + int num_threads; + int num_cores; + msr_t msr; + struct mp_params mp_params; + void *smm_save_area; + + msr = rdmsr(CORE_THREAD_COUNT_MSR); + num_threads = (msr.lo >> 0) & 0xffff; + num_cores = (msr.lo >> 16) & 0xffff; + printk(BIOS_DEBUG, "CPU has %u cores, %u threads enabled.\n", + num_cores, num_threads); + + ht_disabled = num_threads == num_cores; + + /* Perform any necesarry BSP initialization before APs are brought up. + * This call alos allows the BSP to prepare for any secondary effects + * from calling cpu_initialize() such as smm_init(). */ + bsp_init_before_ap_bringup(cpu_bus); + + microcode_patch = intel_microcode_find(); + + /* Save default SMM area before relocation occurs. */ + smm_save_area = backup_default_smm_area(); + + mp_params.num_cpus = num_threads; + mp_params.parallel_microcode_load = 1; + if (ht_disabled) + mp_params.adjust_apic_id = adjust_apic_id_ht_disabled; + else + mp_params.adjust_apic_id = NULL; + mp_params.flight_plan = &mp_steps[0]; + mp_params.num_records = ARRAY_SIZE(mp_steps); + mp_params.microcode_pointer = microcode_patch; + + /* Load relocation and permeanent handlers. Then initiate relocation. */ + if (smm_initialize()) + printk(BIOS_CRIT, "SMM Initialiazation failed...\n"); + + if (mp_init(cpu_bus, &mp_params)) { + printk(BIOS_ERR, "MP initialization failure.\n"); + } + + /* Restore the default SMM region. */ + restore_default_smm_area(smm_save_area); + + /* Enable ROM caching if option was selected. */ + x86_mtrr_enable_rom_caching(); +} -- cgit v1.2.3