From a38fee31b59acd8e3f07ec89d4328e98b6979611 Mon Sep 17 00:00:00 2001 From: Angel Pons Date: Mon, 23 Mar 2020 23:36:15 +0100 Subject: nb/intel/sandybridge: Rename raminit_ivy.c It is no longer specific to Ivy Bridge. Change-Id: I3684e654a1b1aee308e30db739d41cf18e7ea6bd Signed-off-by: Angel Pons Reviewed-on: https://review.coreboot.org/c/coreboot/+/39790 Reviewed-by: Patrick Georgi Tested-by: build bot (Jenkins) --- src/northbridge/intel/sandybridge/Makefile.inc | 2 +- src/northbridge/intel/sandybridge/raminit_ivy.c | 614 --------------------- src/northbridge/intel/sandybridge/raminit_native.c | 614 +++++++++++++++++++++ 3 files changed, 615 insertions(+), 615 deletions(-) delete mode 100644 src/northbridge/intel/sandybridge/raminit_ivy.c create mode 100644 src/northbridge/intel/sandybridge/raminit_native.c (limited to 'src/northbridge') diff --git a/src/northbridge/intel/sandybridge/Makefile.inc b/src/northbridge/intel/sandybridge/Makefile.inc index 9cff82dd3f..de52242612 100644 --- a/src/northbridge/intel/sandybridge/Makefile.inc +++ b/src/northbridge/intel/sandybridge/Makefile.inc @@ -23,7 +23,7 @@ ifeq ($(CONFIG_USE_NATIVE_RAMINIT),y) romstage-y += early_dmi.c romstage-y += raminit.c romstage-y += raminit_common.c -romstage-y += raminit_ivy.c +romstage-y += raminit_native.c romstage-y += raminit_tables.c romstage-y += ../../../device/dram/ddr3.c else diff --git a/src/northbridge/intel/sandybridge/raminit_ivy.c b/src/northbridge/intel/sandybridge/raminit_ivy.c deleted file mode 100644 index d27914a184..0000000000 --- a/src/northbridge/intel/sandybridge/raminit_ivy.c +++ /dev/null @@ -1,614 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* This file is part of the coreboot project. */ - -#include -#include -#include -#include -#include -#include "raminit_native.h" -#include "raminit_common.h" -#include "raminit_tables.h" - -#define SNB_MIN_DCLK_133_MULT 3 -#define SNB_MAX_DCLK_133_MULT 8 -#define IVB_MIN_DCLK_133_MULT 3 -#define IVB_MAX_DCLK_133_MULT 10 -#define IVB_MIN_DCLK_100_MULT 7 -#define IVB_MAX_DCLK_100_MULT 12 - -/* Frequency multiplier */ -static u32 get_FRQ(const ramctr_timing *ctrl) -{ - const u32 FRQ = 256000 / (ctrl->tCK * ctrl->base_freq); - - if (IS_IVY_CPU(ctrl->cpu)) { - if (ctrl->base_freq == 100) - return clamp_u32(IVB_MIN_DCLK_100_MULT, FRQ, IVB_MAX_DCLK_100_MULT); - - if (ctrl->base_freq == 133) - return clamp_u32(IVB_MIN_DCLK_133_MULT, FRQ, IVB_MAX_DCLK_133_MULT); - - } else if (IS_SANDY_CPU(ctrl->cpu)) { - if (ctrl->base_freq == 133) - return clamp_u32(SNB_MIN_DCLK_133_MULT, FRQ, SNB_MAX_DCLK_133_MULT); - } - - die("Unsupported CPU or base frequency."); -} - -/* Get REFI based on frequency index, tREFI = 7.8usec */ -static u32 get_REFI(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_refi_map[1][FRQ - 7]; - - else - return frq_refi_map[0][FRQ - 3]; -} - -/* Get XSOffset based on frequency index, tXS-Offset: tXS = tRFC + 10ns */ -static u8 get_XSOffset(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_xs_map[1][FRQ - 7]; - - else - return frq_xs_map[0][FRQ - 3]; -} - -/* Get MOD based on frequency index */ -static u8 get_MOD(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_mod_map[1][FRQ - 7]; - - else - return frq_mod_map[0][FRQ - 3]; -} - -/* Get Write Leveling Output delay based on frequency index */ -static u8 get_WLO(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_wlo_map[1][FRQ - 7]; - - else - return frq_wlo_map[0][FRQ - 3]; -} - -/* Get CKE based on frequency index */ -static u8 get_CKE(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_cke_map[1][FRQ - 7]; - - else - return frq_cke_map[0][FRQ - 3]; -} - -/* Get XPDLL based on frequency index */ -static u8 get_XPDLL(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_xpdll_map[1][FRQ - 7]; - - else - return frq_xpdll_map[0][FRQ - 3]; -} - -/* Get XP based on frequency index */ -static u8 get_XP(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_xp_map[1][FRQ - 7]; - - else - return frq_xp_map[0][FRQ - 3]; -} - -/* Get AONPD based on frequency index */ -static u8 get_AONPD(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_aonpd_map[1][FRQ - 7]; - - else - return frq_aonpd_map[0][FRQ - 3]; -} - -/* Get COMP2 based on frequency index */ -static u32 get_COMP2(u32 FRQ, u8 base_freq) -{ - if (base_freq == 100) - return frq_comp2_map[1][FRQ - 7]; - - else - return frq_comp2_map[0][FRQ - 3]; -} - -static void normalize_tclk(ramctr_timing *ctrl, bool ref_100mhz_support) -{ - if (ctrl->tCK <= TCK_1200MHZ) { - ctrl->tCK = TCK_1200MHZ; - ctrl->base_freq = 100; - } else if (ctrl->tCK <= TCK_1100MHZ) { - ctrl->tCK = TCK_1100MHZ; - ctrl->base_freq = 100; - } else if (ctrl->tCK <= TCK_1066MHZ) { - ctrl->tCK = TCK_1066MHZ; - ctrl->base_freq = 133; - } else if (ctrl->tCK <= TCK_1000MHZ) { - ctrl->tCK = TCK_1000MHZ; - ctrl->base_freq = 100; - } else if (ctrl->tCK <= TCK_933MHZ) { - ctrl->tCK = TCK_933MHZ; - ctrl->base_freq = 133; - } else if (ctrl->tCK <= TCK_900MHZ) { - ctrl->tCK = TCK_900MHZ; - ctrl->base_freq = 100; - } else if (ctrl->tCK <= TCK_800MHZ) { - ctrl->tCK = TCK_800MHZ; - ctrl->base_freq = 133; - } else if (ctrl->tCK <= TCK_700MHZ) { - ctrl->tCK = TCK_700MHZ; - ctrl->base_freq = 100; - } else if (ctrl->tCK <= TCK_666MHZ) { - ctrl->tCK = TCK_666MHZ; - ctrl->base_freq = 133; - } else if (ctrl->tCK <= TCK_533MHZ) { - ctrl->tCK = TCK_533MHZ; - ctrl->base_freq = 133; - } else if (ctrl->tCK <= TCK_400MHZ) { - ctrl->tCK = TCK_400MHZ; - ctrl->base_freq = 133; - } else { - ctrl->tCK = 0; - return; - } - - if (!ref_100mhz_support && ctrl->base_freq == 100) { - /* Skip unsupported frequency */ - ctrl->tCK++; - normalize_tclk(ctrl, ref_100mhz_support); - } -} - -static void find_cas_tck(ramctr_timing *ctrl) -{ - u8 val; - u32 reg32; - u8 ref_100mhz_support; - - /* 100 MHz reference clock supported */ - reg32 = pci_read_config32(HOST_BRIDGE, CAPID0_B); - ref_100mhz_support = (reg32 >> 21) & 0x7; - printk(BIOS_DEBUG, "100MHz reference clock support: %s\n", ref_100mhz_support ? "yes" - : "no"); - - printk(BIOS_DEBUG, "PLL_REF100_CFG value: 0x%x\n", ref_100mhz_support); - - /* Find CAS latency */ - while (1) { - /* - * Normalising tCK before computing clock could potentially - * result in a lower selected CAS, which is desired. - */ - normalize_tclk(ctrl, ref_100mhz_support); - if (!(ctrl->tCK)) - die("Couldn't find compatible clock / CAS settings\n"); - - val = DIV_ROUND_UP(ctrl->tAA, ctrl->tCK); - printk(BIOS_DEBUG, "Trying CAS %u, tCK %u.\n", val, ctrl->tCK); - for (; val <= MAX_CAS; val++) - if ((ctrl->cas_supported >> (val - MIN_CAS)) & 1) - break; - - if (val == (MAX_CAS + 1)) { - ctrl->tCK++; - continue; - } else { - printk(BIOS_DEBUG, "Found compatible clock, CAS pair.\n"); - break; - } - } - - /* Frequency multiplier */ - ctrl->FRQ = get_FRQ(ctrl); - - printk(BIOS_DEBUG, "Selected DRAM frequency: %u MHz\n", NS2MHZ_DIV256 / ctrl->tCK); - printk(BIOS_DEBUG, "Selected CAS latency : %uT\n", val); - ctrl->CAS = val; -} - - -static void dram_timing(ramctr_timing *ctrl) -{ - /* - * On Sandy Bridge, the maximum supported DDR3 frequency is 1066MHz (DDR3 2133). - * Cap it for faster DIMMs, and align it to the closest JEDEC standard frequency. - */ - /* - * On Ivy Bridge, the maximum supported DDR3 frequency is 1400MHz (DDR3 2800). - * Cap it at 1200MHz (DDR3 2400), and align it to the closest JEDEC standard frequency. - */ - if (ctrl->tCK == TCK_1200MHZ) { - ctrl->edge_offset[0] = 18; //XXX: guessed - ctrl->edge_offset[1] = 8; - ctrl->edge_offset[2] = 8; - ctrl->timC_offset[0] = 20; //XXX: guessed - ctrl->timC_offset[1] = 8; - ctrl->timC_offset[2] = 8; - ctrl->pi_coding_threshold = 10; - - } else if (ctrl->tCK == TCK_1100MHZ) { - ctrl->edge_offset[0] = 17; //XXX: guessed - ctrl->edge_offset[1] = 7; - ctrl->edge_offset[2] = 7; - ctrl->timC_offset[0] = 19; //XXX: guessed - ctrl->timC_offset[1] = 7; - ctrl->timC_offset[2] = 7; - ctrl->pi_coding_threshold = 13; - - } else if (ctrl->tCK == TCK_1066MHZ) { - ctrl->edge_offset[0] = 16; - ctrl->edge_offset[1] = 7; - ctrl->edge_offset[2] = 7; - ctrl->timC_offset[0] = 18; - ctrl->timC_offset[1] = 7; - ctrl->timC_offset[2] = 7; - ctrl->pi_coding_threshold = 13; - - } else if (ctrl->tCK == TCK_1000MHZ) { - ctrl->edge_offset[0] = 15; //XXX: guessed - ctrl->edge_offset[1] = 6; - ctrl->edge_offset[2] = 6; - ctrl->timC_offset[0] = 17; //XXX: guessed - ctrl->timC_offset[1] = 6; - ctrl->timC_offset[2] = 6; - ctrl->pi_coding_threshold = 13; - - } else if (ctrl->tCK == TCK_933MHZ) { - ctrl->edge_offset[0] = 14; - ctrl->edge_offset[1] = 6; - ctrl->edge_offset[2] = 6; - ctrl->timC_offset[0] = 15; - ctrl->timC_offset[1] = 6; - ctrl->timC_offset[2] = 6; - ctrl->pi_coding_threshold = 15; - - } else if (ctrl->tCK == TCK_900MHZ) { - ctrl->edge_offset[0] = 14; //XXX: guessed - ctrl->edge_offset[1] = 6; - ctrl->edge_offset[2] = 6; - ctrl->timC_offset[0] = 15; //XXX: guessed - ctrl->timC_offset[1] = 6; - ctrl->timC_offset[2] = 6; - ctrl->pi_coding_threshold = 12; - - } else if (ctrl->tCK == TCK_800MHZ) { - ctrl->edge_offset[0] = 13; - ctrl->edge_offset[1] = 5; - ctrl->edge_offset[2] = 5; - ctrl->timC_offset[0] = 14; - ctrl->timC_offset[1] = 5; - ctrl->timC_offset[2] = 5; - ctrl->pi_coding_threshold = 15; - - } else if (ctrl->tCK == TCK_700MHZ) { - ctrl->edge_offset[0] = 13; //XXX: guessed - ctrl->edge_offset[1] = 5; - ctrl->edge_offset[2] = 5; - ctrl->timC_offset[0] = 14; //XXX: guessed - ctrl->timC_offset[1] = 5; - ctrl->timC_offset[2] = 5; - ctrl->pi_coding_threshold = 16; - - } else if (ctrl->tCK == TCK_666MHZ) { - ctrl->edge_offset[0] = 10; - ctrl->edge_offset[1] = 4; - ctrl->edge_offset[2] = 4; - ctrl->timC_offset[0] = 11; - ctrl->timC_offset[1] = 4; - ctrl->timC_offset[2] = 4; - ctrl->pi_coding_threshold = 16; - - } else if (ctrl->tCK == TCK_533MHZ) { - ctrl->edge_offset[0] = 8; - ctrl->edge_offset[1] = 3; - ctrl->edge_offset[2] = 3; - ctrl->timC_offset[0] = 9; - ctrl->timC_offset[1] = 3; - ctrl->timC_offset[2] = 3; - ctrl->pi_coding_threshold = 17; - - } else { /* TCK_400MHZ */ - ctrl->edge_offset[0] = 6; - ctrl->edge_offset[1] = 2; - ctrl->edge_offset[2] = 2; - ctrl->timC_offset[0] = 6; - ctrl->timC_offset[1] = 2; - ctrl->timC_offset[2] = 2; - ctrl->pi_coding_threshold = 17; - } - - /* Initial phase between CLK/CMD pins */ - ctrl->pi_code_offset = (256000 / ctrl->tCK) / 66; - - /* DLL_CONFIG_MDLL_W_TIMER */ - ctrl->mdll_wake_delay = (128000 / ctrl->tCK) + 3; - - if (ctrl->tCWL) - ctrl->CWL = DIV_ROUND_UP(ctrl->tCWL, ctrl->tCK); - else - ctrl->CWL = get_CWL(ctrl->tCK); - - printk(BIOS_DEBUG, "Selected CWL latency : %uT\n", ctrl->CWL); - - /* Find tRCD */ - ctrl->tRCD = DIV_ROUND_UP(ctrl->tRCD, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRCD : %uT\n", ctrl->tRCD); - - ctrl->tRP = DIV_ROUND_UP(ctrl->tRP, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRP : %uT\n", ctrl->tRP); - - /* Find tRAS */ - ctrl->tRAS = DIV_ROUND_UP(ctrl->tRAS, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRAS : %uT\n", ctrl->tRAS); - - /* Find tWR */ - ctrl->tWR = DIV_ROUND_UP(ctrl->tWR, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tWR : %uT\n", ctrl->tWR); - - /* Find tFAW */ - ctrl->tFAW = DIV_ROUND_UP(ctrl->tFAW, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tFAW : %uT\n", ctrl->tFAW); - - /* Find tRRD */ - ctrl->tRRD = DIV_ROUND_UP(ctrl->tRRD, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRRD : %uT\n", ctrl->tRRD); - - /* Find tRTP */ - ctrl->tRTP = DIV_ROUND_UP(ctrl->tRTP, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRTP : %uT\n", ctrl->tRTP); - - /* Find tWTR */ - ctrl->tWTR = DIV_ROUND_UP(ctrl->tWTR, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tWTR : %uT\n", ctrl->tWTR); - - /* Refresh-to-Active or Refresh-to-Refresh (tRFC) */ - ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK); - printk(BIOS_DEBUG, "Selected tRFC : %uT\n", ctrl->tRFC); - - ctrl->tREFI = get_REFI(ctrl->FRQ, ctrl->base_freq); - ctrl->tMOD = get_MOD(ctrl->FRQ, ctrl->base_freq); - ctrl->tXSOffset = get_XSOffset(ctrl->FRQ, ctrl->base_freq); - ctrl->tWLO = get_WLO(ctrl->FRQ, ctrl->base_freq); - ctrl->tCKE = get_CKE(ctrl->FRQ, ctrl->base_freq); - ctrl->tXPDLL = get_XPDLL(ctrl->FRQ, ctrl->base_freq); - ctrl->tXP = get_XP(ctrl->FRQ, ctrl->base_freq); - ctrl->tAONPD = get_AONPD(ctrl->FRQ, ctrl->base_freq); -} - -static void dram_freq(ramctr_timing *ctrl) -{ - if (ctrl->tCK > TCK_400MHZ) { - printk(BIOS_ERR, - "DRAM frequency is under lowest supported frequency (400 MHz). " - "Increasing to 400 MHz as last resort"); - ctrl->tCK = TCK_400MHZ; - } - - while (1) { - u8 val2; - u32 reg1 = 0; - - /* Step 1 - Set target PCU frequency */ - find_cas_tck(ctrl); - - /* - * The PLL will never lock if the required frequency is already set. - * Exit early to prevent a system hang. - */ - reg1 = MCHBAR32(MC_BIOS_DATA); - val2 = (u8) reg1; - if (val2) - return; - - /* Step 2 - Select frequency in the MCU */ - reg1 = ctrl->FRQ; - if (ctrl->base_freq == 100) - reg1 |= 0x100; /* Enable 100Mhz REF clock */ - - reg1 |= 0x80000000; /* set running bit */ - MCHBAR32(MC_BIOS_REQ) = reg1; - int i = 0; - printk(BIOS_DEBUG, "PLL busy... "); - while (reg1 & 0x80000000) { - udelay(10); - i++; - reg1 = MCHBAR32(MC_BIOS_REQ); - } - printk(BIOS_DEBUG, "done in %d us\n", i * 10); - - /* Step 3 - Verify lock frequency */ - reg1 = MCHBAR32(MC_BIOS_DATA); - val2 = (u8) reg1; - if (val2 >= ctrl->FRQ) { - printk(BIOS_DEBUG, "MCU frequency is set at : %d MHz\n", - (1000 << 8) / ctrl->tCK); - return; - } - printk(BIOS_DEBUG, "PLL didn't lock. Retrying at lower frequency\n"); - ctrl->tCK++; - } -} - -static void dram_ioregs(ramctr_timing *ctrl) -{ - u32 reg; - - int channel; - - /* IO clock */ - FOR_ALL_CHANNELS { - MCHBAR32(GDCRCLKRANKSUSED_ch(channel)) = ctrl->rankmap[channel]; - } - - /* IO command */ - FOR_ALL_CHANNELS { - MCHBAR32(GDCRCTLRANKSUSED_ch(channel)) = ctrl->rankmap[channel]; - } - - /* IO control */ - FOR_ALL_POPULATED_CHANNELS { - program_timings(ctrl, channel); - } - - /* Perform RCOMP */ - printram("RCOMP..."); - while (!(MCHBAR32(RCOMP_TIMER) & (1 << 16))) - ; - - printram("done\n"); - - /* Set COMP2 */ - MCHBAR32(CRCOMPOFST2) = get_COMP2(ctrl->FRQ, ctrl->base_freq); - printram("COMP2 done\n"); - - /* Set COMP1 */ - FOR_ALL_POPULATED_CHANNELS { - reg = MCHBAR32(CRCOMPOFST1_ch(channel)); - reg = (reg & ~0x00000e00) | (1 << 9); /* ODT */ - reg = (reg & ~0x00e00000) | (1 << 21); /* clk drive up */ - reg = (reg & ~0x38000000) | (1 << 27); /* ctl drive up */ - MCHBAR32(CRCOMPOFST1_ch(channel)) = reg; - } - printram("COMP1 done\n"); - - printram("FORCE RCOMP and wait 20us..."); - MCHBAR32(M_COMP) |= (1 << 8); - udelay(20); - printram("done\n"); -} - -int try_init_dram_ddr3(ramctr_timing *ctrl, int fast_boot, int s3resume, int me_uma_size) -{ - int err; - - printk(BIOS_DEBUG, "Starting %s Bridge RAM training (%s).\n", - IS_SANDY_CPU(ctrl->cpu) ? "Sandy" : "Ivy", - fast_boot ? "fast boot" : "full initialization"); - - if (!fast_boot) { - /* Find fastest common supported parameters */ - dram_find_common_params(ctrl); - - dram_dimm_mapping(ctrl); - } - - /* Set MC frequency */ - dram_freq(ctrl); - - if (!fast_boot) { - /* Calculate timings */ - dram_timing(ctrl); - } - - /* Set version register */ - MCHBAR32(MRC_REVISION) = 0xc04eb002; - - /* Enable crossover */ - dram_xover(ctrl); - - /* Set timing and refresh registers */ - dram_timing_regs(ctrl); - - /* Power mode preset */ - MCHBAR32(PM_THML_STAT) = 0x5500; - - /* Set scheduler chicken bits */ - MCHBAR32(SCHED_CBIT) = 0x10100005; - - /* Set up watermarks and starvation counter */ - set_wmm_behavior(ctrl->cpu); - - /* Clear IO reset bit */ - MCHBAR32(MC_INIT_STATE_G) &= ~(1 << 5); - - /* Set MAD-DIMM registers */ - dram_dimm_set_mapping(ctrl); - printk(BIOS_DEBUG, "Done dimm mapping\n"); - - /* Zone config */ - dram_zones(ctrl, 1); - - /* Set memory map */ - dram_memorymap(ctrl, me_uma_size); - printk(BIOS_DEBUG, "Done memory map\n"); - - /* Set IO registers */ - dram_ioregs(ctrl); - printk(BIOS_DEBUG, "Done io registers\n"); - - udelay(1); - - if (fast_boot) { - restore_timings(ctrl); - } else { - /* Do JEDEC DDR3 reset sequence */ - dram_jedecreset(ctrl); - printk(BIOS_DEBUG, "Done jedec reset\n"); - - /* MRS commands */ - dram_mrscommands(ctrl); - printk(BIOS_DEBUG, "Done MRS commands\n"); - - /* Prepare for memory training */ - prepare_training(ctrl); - - err = read_training(ctrl); - if (err) - return err; - - err = write_training(ctrl); - if (err) - return err; - - printram("CP5a\n"); - - err = discover_edges(ctrl); - if (err) - return err; - - printram("CP5b\n"); - - err = command_training(ctrl); - if (err) - return err; - - printram("CP5c\n"); - - err = discover_edges_write(ctrl); - if (err) - return err; - - err = discover_timC_write(ctrl); - if (err) - return err; - - normalize_training(ctrl); - } - - set_read_write_timings(ctrl); - - write_controller_mr(ctrl); - - if (!s3resume) { - err = channel_test(ctrl); - if (err) - return err; - } - - return 0; -} diff --git a/src/northbridge/intel/sandybridge/raminit_native.c b/src/northbridge/intel/sandybridge/raminit_native.c new file mode 100644 index 0000000000..d27914a184 --- /dev/null +++ b/src/northbridge/intel/sandybridge/raminit_native.c @@ -0,0 +1,614 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +#include +#include +#include +#include +#include +#include "raminit_native.h" +#include "raminit_common.h" +#include "raminit_tables.h" + +#define SNB_MIN_DCLK_133_MULT 3 +#define SNB_MAX_DCLK_133_MULT 8 +#define IVB_MIN_DCLK_133_MULT 3 +#define IVB_MAX_DCLK_133_MULT 10 +#define IVB_MIN_DCLK_100_MULT 7 +#define IVB_MAX_DCLK_100_MULT 12 + +/* Frequency multiplier */ +static u32 get_FRQ(const ramctr_timing *ctrl) +{ + const u32 FRQ = 256000 / (ctrl->tCK * ctrl->base_freq); + + if (IS_IVY_CPU(ctrl->cpu)) { + if (ctrl->base_freq == 100) + return clamp_u32(IVB_MIN_DCLK_100_MULT, FRQ, IVB_MAX_DCLK_100_MULT); + + if (ctrl->base_freq == 133) + return clamp_u32(IVB_MIN_DCLK_133_MULT, FRQ, IVB_MAX_DCLK_133_MULT); + + } else if (IS_SANDY_CPU(ctrl->cpu)) { + if (ctrl->base_freq == 133) + return clamp_u32(SNB_MIN_DCLK_133_MULT, FRQ, SNB_MAX_DCLK_133_MULT); + } + + die("Unsupported CPU or base frequency."); +} + +/* Get REFI based on frequency index, tREFI = 7.8usec */ +static u32 get_REFI(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_refi_map[1][FRQ - 7]; + + else + return frq_refi_map[0][FRQ - 3]; +} + +/* Get XSOffset based on frequency index, tXS-Offset: tXS = tRFC + 10ns */ +static u8 get_XSOffset(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_xs_map[1][FRQ - 7]; + + else + return frq_xs_map[0][FRQ - 3]; +} + +/* Get MOD based on frequency index */ +static u8 get_MOD(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_mod_map[1][FRQ - 7]; + + else + return frq_mod_map[0][FRQ - 3]; +} + +/* Get Write Leveling Output delay based on frequency index */ +static u8 get_WLO(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_wlo_map[1][FRQ - 7]; + + else + return frq_wlo_map[0][FRQ - 3]; +} + +/* Get CKE based on frequency index */ +static u8 get_CKE(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_cke_map[1][FRQ - 7]; + + else + return frq_cke_map[0][FRQ - 3]; +} + +/* Get XPDLL based on frequency index */ +static u8 get_XPDLL(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_xpdll_map[1][FRQ - 7]; + + else + return frq_xpdll_map[0][FRQ - 3]; +} + +/* Get XP based on frequency index */ +static u8 get_XP(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_xp_map[1][FRQ - 7]; + + else + return frq_xp_map[0][FRQ - 3]; +} + +/* Get AONPD based on frequency index */ +static u8 get_AONPD(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_aonpd_map[1][FRQ - 7]; + + else + return frq_aonpd_map[0][FRQ - 3]; +} + +/* Get COMP2 based on frequency index */ +static u32 get_COMP2(u32 FRQ, u8 base_freq) +{ + if (base_freq == 100) + return frq_comp2_map[1][FRQ - 7]; + + else + return frq_comp2_map[0][FRQ - 3]; +} + +static void normalize_tclk(ramctr_timing *ctrl, bool ref_100mhz_support) +{ + if (ctrl->tCK <= TCK_1200MHZ) { + ctrl->tCK = TCK_1200MHZ; + ctrl->base_freq = 100; + } else if (ctrl->tCK <= TCK_1100MHZ) { + ctrl->tCK = TCK_1100MHZ; + ctrl->base_freq = 100; + } else if (ctrl->tCK <= TCK_1066MHZ) { + ctrl->tCK = TCK_1066MHZ; + ctrl->base_freq = 133; + } else if (ctrl->tCK <= TCK_1000MHZ) { + ctrl->tCK = TCK_1000MHZ; + ctrl->base_freq = 100; + } else if (ctrl->tCK <= TCK_933MHZ) { + ctrl->tCK = TCK_933MHZ; + ctrl->base_freq = 133; + } else if (ctrl->tCK <= TCK_900MHZ) { + ctrl->tCK = TCK_900MHZ; + ctrl->base_freq = 100; + } else if (ctrl->tCK <= TCK_800MHZ) { + ctrl->tCK = TCK_800MHZ; + ctrl->base_freq = 133; + } else if (ctrl->tCK <= TCK_700MHZ) { + ctrl->tCK = TCK_700MHZ; + ctrl->base_freq = 100; + } else if (ctrl->tCK <= TCK_666MHZ) { + ctrl->tCK = TCK_666MHZ; + ctrl->base_freq = 133; + } else if (ctrl->tCK <= TCK_533MHZ) { + ctrl->tCK = TCK_533MHZ; + ctrl->base_freq = 133; + } else if (ctrl->tCK <= TCK_400MHZ) { + ctrl->tCK = TCK_400MHZ; + ctrl->base_freq = 133; + } else { + ctrl->tCK = 0; + return; + } + + if (!ref_100mhz_support && ctrl->base_freq == 100) { + /* Skip unsupported frequency */ + ctrl->tCK++; + normalize_tclk(ctrl, ref_100mhz_support); + } +} + +static void find_cas_tck(ramctr_timing *ctrl) +{ + u8 val; + u32 reg32; + u8 ref_100mhz_support; + + /* 100 MHz reference clock supported */ + reg32 = pci_read_config32(HOST_BRIDGE, CAPID0_B); + ref_100mhz_support = (reg32 >> 21) & 0x7; + printk(BIOS_DEBUG, "100MHz reference clock support: %s\n", ref_100mhz_support ? "yes" + : "no"); + + printk(BIOS_DEBUG, "PLL_REF100_CFG value: 0x%x\n", ref_100mhz_support); + + /* Find CAS latency */ + while (1) { + /* + * Normalising tCK before computing clock could potentially + * result in a lower selected CAS, which is desired. + */ + normalize_tclk(ctrl, ref_100mhz_support); + if (!(ctrl->tCK)) + die("Couldn't find compatible clock / CAS settings\n"); + + val = DIV_ROUND_UP(ctrl->tAA, ctrl->tCK); + printk(BIOS_DEBUG, "Trying CAS %u, tCK %u.\n", val, ctrl->tCK); + for (; val <= MAX_CAS; val++) + if ((ctrl->cas_supported >> (val - MIN_CAS)) & 1) + break; + + if (val == (MAX_CAS + 1)) { + ctrl->tCK++; + continue; + } else { + printk(BIOS_DEBUG, "Found compatible clock, CAS pair.\n"); + break; + } + } + + /* Frequency multiplier */ + ctrl->FRQ = get_FRQ(ctrl); + + printk(BIOS_DEBUG, "Selected DRAM frequency: %u MHz\n", NS2MHZ_DIV256 / ctrl->tCK); + printk(BIOS_DEBUG, "Selected CAS latency : %uT\n", val); + ctrl->CAS = val; +} + + +static void dram_timing(ramctr_timing *ctrl) +{ + /* + * On Sandy Bridge, the maximum supported DDR3 frequency is 1066MHz (DDR3 2133). + * Cap it for faster DIMMs, and align it to the closest JEDEC standard frequency. + */ + /* + * On Ivy Bridge, the maximum supported DDR3 frequency is 1400MHz (DDR3 2800). + * Cap it at 1200MHz (DDR3 2400), and align it to the closest JEDEC standard frequency. + */ + if (ctrl->tCK == TCK_1200MHZ) { + ctrl->edge_offset[0] = 18; //XXX: guessed + ctrl->edge_offset[1] = 8; + ctrl->edge_offset[2] = 8; + ctrl->timC_offset[0] = 20; //XXX: guessed + ctrl->timC_offset[1] = 8; + ctrl->timC_offset[2] = 8; + ctrl->pi_coding_threshold = 10; + + } else if (ctrl->tCK == TCK_1100MHZ) { + ctrl->edge_offset[0] = 17; //XXX: guessed + ctrl->edge_offset[1] = 7; + ctrl->edge_offset[2] = 7; + ctrl->timC_offset[0] = 19; //XXX: guessed + ctrl->timC_offset[1] = 7; + ctrl->timC_offset[2] = 7; + ctrl->pi_coding_threshold = 13; + + } else if (ctrl->tCK == TCK_1066MHZ) { + ctrl->edge_offset[0] = 16; + ctrl->edge_offset[1] = 7; + ctrl->edge_offset[2] = 7; + ctrl->timC_offset[0] = 18; + ctrl->timC_offset[1] = 7; + ctrl->timC_offset[2] = 7; + ctrl->pi_coding_threshold = 13; + + } else if (ctrl->tCK == TCK_1000MHZ) { + ctrl->edge_offset[0] = 15; //XXX: guessed + ctrl->edge_offset[1] = 6; + ctrl->edge_offset[2] = 6; + ctrl->timC_offset[0] = 17; //XXX: guessed + ctrl->timC_offset[1] = 6; + ctrl->timC_offset[2] = 6; + ctrl->pi_coding_threshold = 13; + + } else if (ctrl->tCK == TCK_933MHZ) { + ctrl->edge_offset[0] = 14; + ctrl->edge_offset[1] = 6; + ctrl->edge_offset[2] = 6; + ctrl->timC_offset[0] = 15; + ctrl->timC_offset[1] = 6; + ctrl->timC_offset[2] = 6; + ctrl->pi_coding_threshold = 15; + + } else if (ctrl->tCK == TCK_900MHZ) { + ctrl->edge_offset[0] = 14; //XXX: guessed + ctrl->edge_offset[1] = 6; + ctrl->edge_offset[2] = 6; + ctrl->timC_offset[0] = 15; //XXX: guessed + ctrl->timC_offset[1] = 6; + ctrl->timC_offset[2] = 6; + ctrl->pi_coding_threshold = 12; + + } else if (ctrl->tCK == TCK_800MHZ) { + ctrl->edge_offset[0] = 13; + ctrl->edge_offset[1] = 5; + ctrl->edge_offset[2] = 5; + ctrl->timC_offset[0] = 14; + ctrl->timC_offset[1] = 5; + ctrl->timC_offset[2] = 5; + ctrl->pi_coding_threshold = 15; + + } else if (ctrl->tCK == TCK_700MHZ) { + ctrl->edge_offset[0] = 13; //XXX: guessed + ctrl->edge_offset[1] = 5; + ctrl->edge_offset[2] = 5; + ctrl->timC_offset[0] = 14; //XXX: guessed + ctrl->timC_offset[1] = 5; + ctrl->timC_offset[2] = 5; + ctrl->pi_coding_threshold = 16; + + } else if (ctrl->tCK == TCK_666MHZ) { + ctrl->edge_offset[0] = 10; + ctrl->edge_offset[1] = 4; + ctrl->edge_offset[2] = 4; + ctrl->timC_offset[0] = 11; + ctrl->timC_offset[1] = 4; + ctrl->timC_offset[2] = 4; + ctrl->pi_coding_threshold = 16; + + } else if (ctrl->tCK == TCK_533MHZ) { + ctrl->edge_offset[0] = 8; + ctrl->edge_offset[1] = 3; + ctrl->edge_offset[2] = 3; + ctrl->timC_offset[0] = 9; + ctrl->timC_offset[1] = 3; + ctrl->timC_offset[2] = 3; + ctrl->pi_coding_threshold = 17; + + } else { /* TCK_400MHZ */ + ctrl->edge_offset[0] = 6; + ctrl->edge_offset[1] = 2; + ctrl->edge_offset[2] = 2; + ctrl->timC_offset[0] = 6; + ctrl->timC_offset[1] = 2; + ctrl->timC_offset[2] = 2; + ctrl->pi_coding_threshold = 17; + } + + /* Initial phase between CLK/CMD pins */ + ctrl->pi_code_offset = (256000 / ctrl->tCK) / 66; + + /* DLL_CONFIG_MDLL_W_TIMER */ + ctrl->mdll_wake_delay = (128000 / ctrl->tCK) + 3; + + if (ctrl->tCWL) + ctrl->CWL = DIV_ROUND_UP(ctrl->tCWL, ctrl->tCK); + else + ctrl->CWL = get_CWL(ctrl->tCK); + + printk(BIOS_DEBUG, "Selected CWL latency : %uT\n", ctrl->CWL); + + /* Find tRCD */ + ctrl->tRCD = DIV_ROUND_UP(ctrl->tRCD, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRCD : %uT\n", ctrl->tRCD); + + ctrl->tRP = DIV_ROUND_UP(ctrl->tRP, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRP : %uT\n", ctrl->tRP); + + /* Find tRAS */ + ctrl->tRAS = DIV_ROUND_UP(ctrl->tRAS, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRAS : %uT\n", ctrl->tRAS); + + /* Find tWR */ + ctrl->tWR = DIV_ROUND_UP(ctrl->tWR, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tWR : %uT\n", ctrl->tWR); + + /* Find tFAW */ + ctrl->tFAW = DIV_ROUND_UP(ctrl->tFAW, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tFAW : %uT\n", ctrl->tFAW); + + /* Find tRRD */ + ctrl->tRRD = DIV_ROUND_UP(ctrl->tRRD, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRRD : %uT\n", ctrl->tRRD); + + /* Find tRTP */ + ctrl->tRTP = DIV_ROUND_UP(ctrl->tRTP, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRTP : %uT\n", ctrl->tRTP); + + /* Find tWTR */ + ctrl->tWTR = DIV_ROUND_UP(ctrl->tWTR, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tWTR : %uT\n", ctrl->tWTR); + + /* Refresh-to-Active or Refresh-to-Refresh (tRFC) */ + ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK); + printk(BIOS_DEBUG, "Selected tRFC : %uT\n", ctrl->tRFC); + + ctrl->tREFI = get_REFI(ctrl->FRQ, ctrl->base_freq); + ctrl->tMOD = get_MOD(ctrl->FRQ, ctrl->base_freq); + ctrl->tXSOffset = get_XSOffset(ctrl->FRQ, ctrl->base_freq); + ctrl->tWLO = get_WLO(ctrl->FRQ, ctrl->base_freq); + ctrl->tCKE = get_CKE(ctrl->FRQ, ctrl->base_freq); + ctrl->tXPDLL = get_XPDLL(ctrl->FRQ, ctrl->base_freq); + ctrl->tXP = get_XP(ctrl->FRQ, ctrl->base_freq); + ctrl->tAONPD = get_AONPD(ctrl->FRQ, ctrl->base_freq); +} + +static void dram_freq(ramctr_timing *ctrl) +{ + if (ctrl->tCK > TCK_400MHZ) { + printk(BIOS_ERR, + "DRAM frequency is under lowest supported frequency (400 MHz). " + "Increasing to 400 MHz as last resort"); + ctrl->tCK = TCK_400MHZ; + } + + while (1) { + u8 val2; + u32 reg1 = 0; + + /* Step 1 - Set target PCU frequency */ + find_cas_tck(ctrl); + + /* + * The PLL will never lock if the required frequency is already set. + * Exit early to prevent a system hang. + */ + reg1 = MCHBAR32(MC_BIOS_DATA); + val2 = (u8) reg1; + if (val2) + return; + + /* Step 2 - Select frequency in the MCU */ + reg1 = ctrl->FRQ; + if (ctrl->base_freq == 100) + reg1 |= 0x100; /* Enable 100Mhz REF clock */ + + reg1 |= 0x80000000; /* set running bit */ + MCHBAR32(MC_BIOS_REQ) = reg1; + int i = 0; + printk(BIOS_DEBUG, "PLL busy... "); + while (reg1 & 0x80000000) { + udelay(10); + i++; + reg1 = MCHBAR32(MC_BIOS_REQ); + } + printk(BIOS_DEBUG, "done in %d us\n", i * 10); + + /* Step 3 - Verify lock frequency */ + reg1 = MCHBAR32(MC_BIOS_DATA); + val2 = (u8) reg1; + if (val2 >= ctrl->FRQ) { + printk(BIOS_DEBUG, "MCU frequency is set at : %d MHz\n", + (1000 << 8) / ctrl->tCK); + return; + } + printk(BIOS_DEBUG, "PLL didn't lock. Retrying at lower frequency\n"); + ctrl->tCK++; + } +} + +static void dram_ioregs(ramctr_timing *ctrl) +{ + u32 reg; + + int channel; + + /* IO clock */ + FOR_ALL_CHANNELS { + MCHBAR32(GDCRCLKRANKSUSED_ch(channel)) = ctrl->rankmap[channel]; + } + + /* IO command */ + FOR_ALL_CHANNELS { + MCHBAR32(GDCRCTLRANKSUSED_ch(channel)) = ctrl->rankmap[channel]; + } + + /* IO control */ + FOR_ALL_POPULATED_CHANNELS { + program_timings(ctrl, channel); + } + + /* Perform RCOMP */ + printram("RCOMP..."); + while (!(MCHBAR32(RCOMP_TIMER) & (1 << 16))) + ; + + printram("done\n"); + + /* Set COMP2 */ + MCHBAR32(CRCOMPOFST2) = get_COMP2(ctrl->FRQ, ctrl->base_freq); + printram("COMP2 done\n"); + + /* Set COMP1 */ + FOR_ALL_POPULATED_CHANNELS { + reg = MCHBAR32(CRCOMPOFST1_ch(channel)); + reg = (reg & ~0x00000e00) | (1 << 9); /* ODT */ + reg = (reg & ~0x00e00000) | (1 << 21); /* clk drive up */ + reg = (reg & ~0x38000000) | (1 << 27); /* ctl drive up */ + MCHBAR32(CRCOMPOFST1_ch(channel)) = reg; + } + printram("COMP1 done\n"); + + printram("FORCE RCOMP and wait 20us..."); + MCHBAR32(M_COMP) |= (1 << 8); + udelay(20); + printram("done\n"); +} + +int try_init_dram_ddr3(ramctr_timing *ctrl, int fast_boot, int s3resume, int me_uma_size) +{ + int err; + + printk(BIOS_DEBUG, "Starting %s Bridge RAM training (%s).\n", + IS_SANDY_CPU(ctrl->cpu) ? "Sandy" : "Ivy", + fast_boot ? "fast boot" : "full initialization"); + + if (!fast_boot) { + /* Find fastest common supported parameters */ + dram_find_common_params(ctrl); + + dram_dimm_mapping(ctrl); + } + + /* Set MC frequency */ + dram_freq(ctrl); + + if (!fast_boot) { + /* Calculate timings */ + dram_timing(ctrl); + } + + /* Set version register */ + MCHBAR32(MRC_REVISION) = 0xc04eb002; + + /* Enable crossover */ + dram_xover(ctrl); + + /* Set timing and refresh registers */ + dram_timing_regs(ctrl); + + /* Power mode preset */ + MCHBAR32(PM_THML_STAT) = 0x5500; + + /* Set scheduler chicken bits */ + MCHBAR32(SCHED_CBIT) = 0x10100005; + + /* Set up watermarks and starvation counter */ + set_wmm_behavior(ctrl->cpu); + + /* Clear IO reset bit */ + MCHBAR32(MC_INIT_STATE_G) &= ~(1 << 5); + + /* Set MAD-DIMM registers */ + dram_dimm_set_mapping(ctrl); + printk(BIOS_DEBUG, "Done dimm mapping\n"); + + /* Zone config */ + dram_zones(ctrl, 1); + + /* Set memory map */ + dram_memorymap(ctrl, me_uma_size); + printk(BIOS_DEBUG, "Done memory map\n"); + + /* Set IO registers */ + dram_ioregs(ctrl); + printk(BIOS_DEBUG, "Done io registers\n"); + + udelay(1); + + if (fast_boot) { + restore_timings(ctrl); + } else { + /* Do JEDEC DDR3 reset sequence */ + dram_jedecreset(ctrl); + printk(BIOS_DEBUG, "Done jedec reset\n"); + + /* MRS commands */ + dram_mrscommands(ctrl); + printk(BIOS_DEBUG, "Done MRS commands\n"); + + /* Prepare for memory training */ + prepare_training(ctrl); + + err = read_training(ctrl); + if (err) + return err; + + err = write_training(ctrl); + if (err) + return err; + + printram("CP5a\n"); + + err = discover_edges(ctrl); + if (err) + return err; + + printram("CP5b\n"); + + err = command_training(ctrl); + if (err) + return err; + + printram("CP5c\n"); + + err = discover_edges_write(ctrl); + if (err) + return err; + + err = discover_timC_write(ctrl); + if (err) + return err; + + normalize_training(ctrl); + } + + set_read_write_timings(ctrl); + + write_controller_mr(ctrl); + + if (!s3resume) { + err = channel_test(ctrl); + if (err) + return err; + } + + return 0; +} -- cgit v1.2.3