diff options
Diffstat (limited to 'config/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch')
| -rw-r--r-- | config/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch | 1038 |
1 files changed, 1038 insertions, 0 deletions
diff --git a/config/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch b/config/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch new file mode 100644 index 00000000..c321d239 --- /dev/null +++ b/config/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch @@ -0,0 +1,1038 @@ +From d24def01ec15f41a48331ef1e236270b2df90b84 Mon Sep 17 00:00:00 2001 +From: Angel Pons <th3fanbus@gmail.com> +Date: Sat, 7 May 2022 21:49:40 +0200 +Subject: [PATCH 16/26] haswell NRI: Add DDR3 JEDEC reset and init + +Implement JEDEC reset and init sequence for DDR3. The MRS commands are +issued through the REUT (Robust Electrical Unified Testing) hardware. + +Change-Id: I2a0c066537021b587599228086727cb1e041bff5 +Signed-off-by: Angel Pons <th3fanbus@gmail.com> +--- + .../intel/haswell/native_raminit/Makefile.inc | 3 + + .../intel/haswell/native_raminit/ddr3.c | 217 ++++++++++++++++++ + .../haswell/native_raminit/io_comp_control.c | 19 ++ + .../haswell/native_raminit/jedec_reset.c | 120 ++++++++++ + .../haswell/native_raminit/raminit_main.c | 2 + + .../haswell/native_raminit/raminit_native.h | 101 ++++++++ + .../haswell/native_raminit/reg_structs.h | 154 +++++++++++++ + .../intel/haswell/native_raminit/reut.c | 196 ++++++++++++++++ + .../intel/haswell/registers/mchbar.h | 21 ++ + src/southbridge/intel/lynxpoint/pch.h | 2 + + 10 files changed, 835 insertions(+) + create mode 100644 src/northbridge/intel/haswell/native_raminit/ddr3.c + create mode 100644 src/northbridge/intel/haswell/native_raminit/jedec_reset.c + create mode 100644 src/northbridge/intel/haswell/native_raminit/reut.c + +diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc +index 37d527e972..e9212df9e6 100644 +--- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc ++++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc +@@ -1,11 +1,14 @@ + ## SPDX-License-Identifier: GPL-2.0-or-later + + romstage-y += configure_mc.c ++romstage-y += ddr3.c ++romstage-y += jedec_reset.c + romstage-y += lookup_timings.c + romstage-y += init_mpll.c + romstage-y += io_comp_control.c + romstage-y += memory_map.c + romstage-y += raminit_main.c + romstage-y += raminit_native.c ++romstage-y += reut.c + romstage-y += spd_bitmunching.c + romstage-y += timings_refresh.c +diff --git a/src/northbridge/intel/haswell/native_raminit/ddr3.c b/src/northbridge/intel/haswell/native_raminit/ddr3.c +new file mode 100644 +index 0000000000..6ddb11488b +--- /dev/null ++++ b/src/northbridge/intel/haswell/native_raminit/ddr3.c +@@ -0,0 +1,217 @@ ++/* SPDX-License-Identifier: GPL-2.0-or-later */ ++ ++#include <assert.h> ++#include <console/console.h> ++#include <northbridge/intel/haswell/haswell.h> ++#include <types.h> ++ ++#include "raminit_native.h" ++ ++#define DDR3_RTTNOM(a, b, c) (((a) << 9) | ((b) << 6) | ((c) << 2)) ++ ++uint16_t encode_ddr3_rttnom(const uint32_t rttnom) ++{ ++ switch (rttnom) { ++ case 0: return DDR3_RTTNOM(0, 0, 0); /* RttNom is disabled */ ++ case 20: return DDR3_RTTNOM(1, 0, 0); /* RZQ/12 */ ++ case 30: return DDR3_RTTNOM(1, 0, 1); /* RZQ/8 */ ++ case 40: return DDR3_RTTNOM(0, 1, 1); /* RZQ/6 */ ++ case 60: return DDR3_RTTNOM(0, 0, 1); /* RZQ/4 */ ++ case 120: return DDR3_RTTNOM(0, 1, 0); /* RZQ/2 */ ++ } ++ printk(BIOS_ERR, "%s: Invalid rtt_nom value %u\n", __func__, rttnom); ++ return 0; ++} ++ ++static const uint8_t jedec_wr_t[12] = { 1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0 }; ++ ++static void ddr3_program_mr0(struct sysinfo *ctrl, const uint8_t dll_reset) ++{ ++ assert(ctrl->tWR >= 5 && ctrl->tWR <= 16); ++ assert(ctrl->tAA >= 4); ++ const uint8_t jedec_cas = ctrl->tAA - 4; ++ const union { ++ struct __packed { ++ uint16_t burst_length : 2; // Bits 1:0 ++ uint16_t cas_latency_msb : 1; // Bits 2:2 ++ uint16_t read_burst_type : 1; // Bits 3:3 ++ uint16_t cas_latency_low : 3; // Bits 6:4 ++ uint16_t test_mode : 1; // Bits 7:7 ++ uint16_t dll_reset : 1; // Bits 8:8 ++ uint16_t write_recovery : 3; // Bits 11:9 ++ uint16_t precharge_pd_dll : 1; // Bits 12:12 ++ uint16_t : 3; // Bits 15:13 ++ }; ++ uint16_t raw; ++ } mr0reg = { ++ .burst_length = 0, ++ .cas_latency_msb = !!(jedec_cas & BIT(3)), ++ .read_burst_type = 0, ++ .cas_latency_low = jedec_cas & 0x7, ++ .dll_reset = 1, ++ .write_recovery = jedec_wr_t[ctrl->tWR - 5], ++ .precharge_pd_dll = 0, ++ }; ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ if (!does_ch_exist(ctrl, channel)) ++ continue; ++ ++ for (uint8_t slot = 0; slot < NUM_SLOTS; slot++) { ++ if (!rank_in_ch(ctrl, slot + slot, channel)) ++ continue; ++ ++ if (!ctrl->restore_mrs) ++ ctrl->mr0[channel][slot] = mr0reg.raw; ++ } ++ reut_issue_mrs_all(ctrl, channel, 0, ctrl->mr0[channel]); ++ } ++} ++ ++void ddr3_program_mr1(struct sysinfo *ctrl, const uint8_t wl_mode, const uint8_t q_off) ++{ ++ /* ++ * JESD79-3F (JEDEC DDR3 spec) refers to bit 0 of MR1 as 'DLL Enable'. ++ * However, its encoding is weird, and 'DLL Disable' makes more sense. ++ * ++ * Moreover, bit 5 is part of ODIC (Output Driver Impedance Control), ++ * but all encodings where MR1 bit 5 is 1 are reserved. Thus, omit it. ++ */ ++ union { ++ struct __packed { ++ uint16_t dll_disable : 1; // Bits 0:0 ++ uint16_t od_impedance_ctl : 1; // Bits 1:1 ++ uint16_t odt_rtt_nom_low : 1; // Bits 2:2 ++ uint16_t additive_latency : 2; // Bits 4:3 ++ uint16_t : 1; // Bits 5:5 ++ uint16_t odt_rtt_nom_mid : 1; // Bits 6:6 ++ uint16_t write_level_mode : 1; // Bits 7:7 ++ uint16_t : 1; // Bits 8:8 ++ uint16_t odt_rtt_nom_high : 1; // Bits 9:9 ++ uint16_t : 1; // Bits 10:10 ++ uint16_t t_dqs : 1; // Bits 11:11 ++ uint16_t q_off : 1; // Bits 12:12 ++ uint16_t : 3; // Bits 15:13 ++ }; ++ uint16_t raw; ++ } mr1reg = { ++ .dll_disable = 0, ++ .od_impedance_ctl = 1, /* RZQ/7 */ ++ .additive_latency = 0, ++ .write_level_mode = wl_mode, ++ .t_dqs = 0, ++ .q_off = q_off, ++ }; ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ if (!does_ch_exist(ctrl, channel)) ++ continue; ++ ++ mr1reg.raw &= ~RTTNOM_MASK; ++ mr1reg.raw |= encode_ddr3_rttnom(ctrl->dpc[channel] == 2 ? 60 : 0); ++ for (uint8_t slot = 0; slot < NUM_SLOTS; slot++) { ++ if (!rank_in_ch(ctrl, slot + slot, channel)) ++ continue; ++ ++ if (!ctrl->restore_mrs) ++ ctrl->mr1[channel][slot] = mr1reg.raw; ++ } ++ reut_issue_mrs_all(ctrl, channel, 1, ctrl->mr1[channel]); ++ } ++} ++ ++enum { ++ RTT_WR_OFF = 0, ++ RTT_WR_60 = 1, ++ RTT_WR_120 = 2, ++}; ++ ++static void ddr3_program_mr2(struct sysinfo *ctrl) ++{ ++ assert(ctrl->tCWL >= 5); ++ const bool dimm_srt = ctrl->flags.ext_temp_refresh && !ctrl->flags.asr; ++ ++ const union { ++ struct __packed { ++ uint16_t partial_array_sr : 3; // Bits 0:2 ++ uint16_t cas_write_latency : 3; // Bits 5:3 ++ uint16_t auto_self_refresh : 1; // Bits 6:6 ++ uint16_t self_refresh_temp : 1; // Bits 7:7 ++ uint16_t : 1; // Bits 8:8 ++ uint16_t odt_rtt_wr : 2; // Bits 10:9 ++ uint16_t : 5; // Bits 15:11 ++ }; ++ uint16_t raw; ++ } mr2reg = { ++ .partial_array_sr = 0, ++ .cas_write_latency = ctrl->tCWL - 5, ++ .auto_self_refresh = ctrl->flags.asr, ++ .self_refresh_temp = dimm_srt, ++ .odt_rtt_wr = is_hsw_ult() ? RTT_WR_120 : RTT_WR_60, ++ }; ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ if (!does_ch_exist(ctrl, channel)) ++ continue; ++ ++ for (uint8_t slot = 0; slot < NUM_SLOTS; slot++) { ++ if (!rank_in_ch(ctrl, slot + slot, channel)) ++ continue; ++ ++ if (!ctrl->restore_mrs) ++ ctrl->mr2[channel][slot] = mr2reg.raw; ++ } ++ /* MR2 shadow register is similar but not identical to MR2 */ ++ if (!ctrl->restore_mrs) { ++ union tc_mr2_shadow_reg tc_mr2_shadow = { ++ .raw = mr2reg.raw & 0x073f, ++ }; ++ for (uint8_t slot = 0; slot < NUM_SLOTS; slot++) { ++ if (!rank_in_ch(ctrl, slot + slot, channel)) ++ continue; ++ ++ if (dimm_srt) ++ tc_mr2_shadow.srt_available |= BIT(slot); ++ ++ if (ctrl->rank_mirrored[channel] & BIT(slot + slot + 1)) ++ tc_mr2_shadow.addr_bit_swizzle |= BIT(slot); ++ } ++ mchbar_write32(TC_MR2_SHADOW_ch(channel), tc_mr2_shadow.raw); ++ } ++ reut_issue_mrs_all(ctrl, channel, 2, ctrl->mr2[channel]); ++ } ++} ++ ++static void ddr3_program_mr3(struct sysinfo *ctrl, const uint8_t mpr_mode) ++{ ++ const union { ++ struct __packed { ++ uint16_t mpr_loc : 2; // Bits 1:0 ++ uint16_t mpr_mode : 1; // Bits 2:2 ++ uint16_t : 13; // Bits 15:3 ++ }; ++ uint16_t raw; ++ } mr3reg = { ++ .mpr_loc = 0, ++ .mpr_mode = mpr_mode, ++ }; ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ if (!does_ch_exist(ctrl, channel)) ++ continue; ++ ++ for (uint8_t slot = 0; slot < NUM_SLOTS; slot++) { ++ if (!rank_in_ch(ctrl, slot + slot, channel)) ++ continue; ++ ++ if (!ctrl->restore_mrs) ++ ctrl->mr3[channel][slot] = mr3reg.raw; ++ } ++ reut_issue_mrs_all(ctrl, channel, 3, ctrl->mr3[channel]); ++ } ++} ++ ++enum raminit_status ddr3_jedec_init(struct sysinfo *ctrl) ++{ ++ ddr3_program_mr2(ctrl); ++ ddr3_program_mr3(ctrl, 0); ++ ddr3_program_mr1(ctrl, 0, 0); ++ ddr3_program_mr0(ctrl, 1); ++ return reut_issue_zq(ctrl, ctrl->chanmap, ZQ_INIT); ++} +diff --git a/src/northbridge/intel/haswell/native_raminit/io_comp_control.c b/src/northbridge/intel/haswell/native_raminit/io_comp_control.c +index 7e96c08938..ad8c848e57 100644 +--- a/src/northbridge/intel/haswell/native_raminit/io_comp_control.c ++++ b/src/northbridge/intel/haswell/native_raminit/io_comp_control.c +@@ -8,6 +8,25 @@ + + #include "raminit_native.h" + ++enum raminit_status io_reset(void) ++{ ++ union mc_init_state_g_reg mc_init_state_g = { ++ .raw = mchbar_read32(MC_INIT_STATE_G), ++ }; ++ mc_init_state_g.reset_io = 1; ++ mchbar_write32(MC_INIT_STATE_G, mc_init_state_g.raw); ++ struct stopwatch timer; ++ stopwatch_init_msecs_expire(&timer, 2000); ++ do { ++ mc_init_state_g.raw = mchbar_read32(MC_INIT_STATE_G); ++ if (mc_init_state_g.reset_io == 0) ++ return RAMINIT_STATUS_SUCCESS; ++ ++ } while (!stopwatch_expired(&timer)); ++ printk(BIOS_ERR, "Timed out waiting for DDR I/O reset to complete\n"); ++ return RAMINIT_STATUS_POLL_TIMEOUT; ++} ++ + enum raminit_status wait_for_first_rcomp(void) + { + struct stopwatch timer; +diff --git a/src/northbridge/intel/haswell/native_raminit/jedec_reset.c b/src/northbridge/intel/haswell/native_raminit/jedec_reset.c +new file mode 100644 +index 0000000000..de0f676758 +--- /dev/null ++++ b/src/northbridge/intel/haswell/native_raminit/jedec_reset.c +@@ -0,0 +1,120 @@ ++/* SPDX-License-Identifier: GPL-2.0-or-later */ ++ ++#include <console/console.h> ++#include <delay.h> ++#include <northbridge/intel/haswell/haswell.h> ++#include <southbridge/intel/lynxpoint/pch.h> ++#include <types.h> ++#include <timer.h> ++ ++#include "raminit_native.h" ++ ++static void assert_reset(const bool do_reset) ++{ ++ if (is_hsw_ult()) { ++ uint32_t pm_cfg2 = RCBA32(PM_CFG2); ++ if (do_reset) ++ pm_cfg2 &= ~PM_CFG2_DRAM_RESET_CTL; ++ else ++ pm_cfg2 |= PM_CFG2_DRAM_RESET_CTL; ++ RCBA32(PM_CFG2) = pm_cfg2; ++ } else { ++ union mc_init_state_g_reg mc_init_state_g = { ++ .raw = mchbar_read32(MC_INIT_STATE_G), ++ }; ++ mc_init_state_g.ddr_not_reset = !do_reset; ++ mchbar_write32(MC_INIT_STATE_G, mc_init_state_g.raw); ++ } ++} ++ ++/* ++ * Perform JEDEC reset. ++ * ++ * If RTT_NOM is to be enabled in MR1, the ODT input signal must be ++ * statically held low in our system since RTT_NOM is always enabled. ++ */ ++static void jedec_reset(struct sysinfo *ctrl) ++{ ++ if (is_hsw_ult()) ++ assert_reset(false); ++ ++ union mc_init_state_g_reg mc_init_state_g = { ++ .ddr_not_reset = 1, ++ .safe_self_refresh = 1, ++ }; ++ mchbar_write32(MC_INIT_STATE_G, mc_init_state_g.raw); ++ ++ union reut_misc_cke_ctrl_reg reut_misc_cke_ctrl = { ++ .cke_override = 0xf, ++ .cke_on = 0, ++ }; ++ mchbar_write32(REUT_MISC_CKE_CTRL, reut_misc_cke_ctrl.raw); ++ ++ assert_reset(true); ++ ++ /** TODO: check and switch DDR3 voltage here (mainboard-specific) **/ ++ ++ udelay(200); ++ ++ assert_reset(false); ++ ++ udelay(500); ++ ++ mc_init_state_g.dclk_enable = 1; ++ mchbar_write32(MC_INIT_STATE_G, mc_init_state_g.raw); ++ ++ /* Delay at least 20 nanoseconds for tCKSRX */ ++ tick_delay(1); ++ ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ reut_misc_cke_ctrl.cke_on = ctrl->rankmap[channel]; ++ mchbar_write32(REUT_ch_MISC_CKE_CTRL(channel), reut_misc_cke_ctrl.raw); ++ } ++ ++ /* ++ * Wait minimum of reset CKE exit time, tXPR. ++ * Spec says MAX(tXS, 5 tCK). 5 tCK is 10 ns. ++ */ ++ tick_delay(1); ++} ++ ++enum raminit_status do_jedec_init(struct sysinfo *ctrl) ++{ ++ /* Never do a JEDEC reset in S3 resume */ ++ if (ctrl->bootmode == BOOTMODE_S3) ++ return RAMINIT_STATUS_SUCCESS; ++ ++ enum raminit_status status = io_reset(); ++ if (status) ++ return status; ++ ++ status = wait_for_first_rcomp(); ++ if (status) ++ return status; ++ ++ /* Force ODT low (JEDEC spec) */ ++ const union reut_misc_odt_ctrl_reg reut_misc_odt_ctrl = { ++ .odt_override = 0xf, ++ .odt_on = 0, ++ }; ++ mchbar_write32(REUT_MISC_ODT_CTRL, reut_misc_odt_ctrl.raw); ++ ++ /* ++ * Note: Haswell MRC does not clear ODT override for LPDDR3. However, ++ * Broadwell MRC does. Hell suspects this difference is important, as ++ * there is an erratum in the specification update for Broadwell: ++ * ++ * Erratum BDM74: LPDDR3 Memory Training May Cause Platform Boot Failure ++ */ ++ if (ctrl->lpddr) ++ die("%s: LPDDR-specific JEDEC init not implemented\n", __func__); ++ ++ jedec_reset(ctrl); ++ status = ddr3_jedec_init(ctrl); ++ if (!status) ++ ctrl->restore_mrs = true; ++ ++ /* Release ODT override */ ++ mchbar_write32(REUT_MISC_ODT_CTRL, 0); ++ return status; ++} +diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c +index 136a8ba989..73ff180b8c 100644 +--- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c ++++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c +@@ -25,6 +25,7 @@ static const struct task_entry cold_boot[] = { + { convert_timings, true, "CONVTIM", }, + { configure_mc, true, "CONFMC", }, + { configure_memory_map, true, "MEMMAP", }, ++ { do_jedec_init, true, "JEDECINIT", }, + }; + + /* Return a generic stepping value to make stepping checks simpler */ +@@ -58,6 +59,7 @@ static void initialize_ctrl(struct sysinfo *ctrl) + ctrl->stepping = get_stepping(ctrl->cpu); + ctrl->vdd_mv = is_hsw_ult() ? 1350 : 1500; /** FIXME: Hardcoded, does it matter? **/ + ctrl->dq_pins_interleaved = cfg->dq_pins_interleaved; ++ ctrl->restore_mrs = false; + ctrl->bootmode = bootmode; + } + +diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h +index 4763b25e8d..e3cf4254a0 100644 +--- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h ++++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h +@@ -27,6 +27,30 @@ + /* Always use 12 legs for emphasis (not trained) */ + #define TXEQFULLDRV (3 << 4) + ++/* DDR3 mode register bits */ ++#define MR0_DLL_RESET BIT(8) ++ ++#define MR1_WL_ENABLE BIT(7) ++#define MR1_QOFF_ENABLE BIT(12) /* If set, output buffers disabled */ ++ ++#define RTTNOM_MASK (BIT(9) | BIT(6) | BIT(2)) ++ ++/* ZQ calibration types */ ++enum { ++ ZQ_INIT, /* DDR3: ZQCL with tZQinit, LPDDR3: ZQ Init with tZQinit */ ++ ZQ_LONG, /* DDR3: ZQCL with tZQoper, LPDDR3: ZQ Long with tZQCL */ ++ ZQ_SHORT, /* DDR3: ZQCS with tZQCS, LPDDR3: ZQ Short with tZQCS */ ++ ZQ_RESET, /* DDR3: not used, LPDDR3: ZQ Reset with tZQreset */ ++}; ++ ++/* REUT initialisation modes */ ++enum { ++ REUT_MODE_IDLE = 0, ++ REUT_MODE_TEST = 1, ++ REUT_MODE_MRS = 2, ++ REUT_MODE_NOP = 3, /* Normal operation mode */ ++}; ++ + enum command_training_iteration { + CT_ITERATION_CLOCK = 0, + CT_ITERATION_CMD_NORTH, +@@ -50,6 +74,7 @@ enum raminit_status { + RAMINIT_STATUS_UNSUPPORTED_MEMORY, + RAMINIT_STATUS_MPLL_INIT_FAILURE, + RAMINIT_STATUS_POLL_TIMEOUT, ++ RAMINIT_STATUS_REUT_ERROR, + RAMINIT_STATUS_UNSPECIFIED_ERROR, /** TODO: Deprecated in favor of specific values **/ + }; + +@@ -72,6 +97,7 @@ struct sysinfo { + uint32_t cpu; /* CPUID value */ + + bool dq_pins_interleaved; ++ bool restore_mrs; + + /** TODO: ECC support untested **/ + bool is_ecc; +@@ -161,6 +187,11 @@ struct sysinfo { + union tc_bank_rank_b_reg tc_bankrank_b[NUM_CHANNELS]; + union tc_bank_rank_c_reg tc_bankrank_c[NUM_CHANNELS]; + union tc_bank_rank_d_reg tc_bankrank_d[NUM_CHANNELS]; ++ ++ uint16_t mr0[NUM_CHANNELS][NUM_SLOTRANKS]; ++ uint16_t mr1[NUM_CHANNELS][NUM_SLOTRANKS]; ++ uint16_t mr2[NUM_CHANNELS][NUM_SLOTRANKS]; ++ uint16_t mr3[NUM_CHANNELS][NUM_SLOTRANKS]; + }; + + static inline bool is_hsw_ult(void) +@@ -196,6 +227,55 @@ static inline void clear_data_offset_train_all(struct sysinfo *ctrl) + memset(ctrl->data_offset_train, 0, sizeof(ctrl->data_offset_train)); + } + ++/* Number of ticks to wait in units of 69.841279 ns (citation needed) */ ++static inline void tick_delay(const uint32_t delay) ++{ ++ volatile uint32_t junk; ++ ++ /* Just perform reads to a random register */ ++ for (uint32_t start = 0; start <= delay; start++) ++ junk = mchbar_read32(REUT_ERR_DATA_STATUS); ++} ++ ++/* ++ * 64-bit MCHBAR registers need to be accessed atomically. If one uses ++ * two 32-bit ops instead, there will be problems with the REUT's CADB ++ * (Command Address Data Buffer): hardware automatically advances the ++ * pointer into the register file after a write to the input register. ++ */ ++static inline uint64_t mchbar_read64(const uintptr_t x) ++{ ++ const uint64_t *offset = (uint64_t *)(CONFIG_FIXED_MCHBAR_MMIO_BASE + x); ++ uint64_t mmxsave, v; ++ asm volatile ( ++ "\n\t movq %%mm0, %0" ++ "\n\t movq %2, %%mm0" ++ "\n\t movq %%mm0, %1" ++ "\n\t movq %3, %%mm0" ++ "\n\t emms" ++ : "=m"(mmxsave), ++ "=m"(v) ++ : "m"(offset[0]), ++ "m"(mmxsave)); ++ return v; ++} ++ ++static inline void mchbar_write64(const uintptr_t x, const uint64_t v) ++{ ++ const uint64_t *offset = (uint64_t *)(CONFIG_FIXED_MCHBAR_MMIO_BASE + x); ++ uint64_t mmxsave; ++ asm volatile ( ++ "\n\t movq %%mm0, %0" ++ "\n\t movq %2, %%mm0" ++ "\n\t movq %%mm0, %1" ++ "\n\t movq %3, %%mm0" ++ "\n\t emms" ++ : "=m"(mmxsave) ++ : "m"(offset[0]), ++ "m"(v), ++ "m"(mmxsave)); ++} ++ + void raminit_main(enum raminit_boot_mode bootmode); + + enum raminit_status collect_spd_info(struct sysinfo *ctrl); +@@ -203,6 +283,7 @@ enum raminit_status initialise_mpll(struct sysinfo *ctrl); + enum raminit_status convert_timings(struct sysinfo *ctrl); + enum raminit_status configure_mc(struct sysinfo *ctrl); + enum raminit_status configure_memory_map(struct sysinfo *ctrl); ++enum raminit_status do_jedec_init(struct sysinfo *ctrl); + + void configure_timings(struct sysinfo *ctrl); + void configure_refresh(struct sysinfo *ctrl); +@@ -215,8 +296,28 @@ uint32_t get_tXS_offset(uint32_t mem_clock_mhz); + uint32_t get_tZQOPER(uint32_t mem_clock_mhz, bool lpddr); + uint32_t get_tZQCS(uint32_t mem_clock_mhz, bool lpddr); + ++enum raminit_status io_reset(void); + enum raminit_status wait_for_first_rcomp(void); + ++uint16_t encode_ddr3_rttnom(uint32_t rttnom); ++void ddr3_program_mr1(struct sysinfo *ctrl, uint8_t wl_mode, uint8_t q_off); ++enum raminit_status ddr3_jedec_init(struct sysinfo *ctrl); ++ ++void reut_issue_mrs( ++ struct sysinfo *ctrl, ++ uint8_t channel, ++ uint8_t rankmask, ++ uint8_t mr, ++ uint16_t val); ++ ++void reut_issue_mrs_all( ++ struct sysinfo *ctrl, ++ uint8_t channel, ++ uint8_t mr, ++ const uint16_t val[NUM_SLOTS]); ++ ++enum raminit_status reut_issue_zq(struct sysinfo *ctrl, uint8_t chanmask, uint8_t zq_type); ++ + uint8_t get_rx_bias(const struct sysinfo *ctrl); + + uint8_t get_tCWL(uint32_t mem_clock_mhz); +diff --git a/src/northbridge/intel/haswell/native_raminit/reg_structs.h b/src/northbridge/intel/haswell/native_raminit/reg_structs.h +index 70487e1640..9929f617fe 100644 +--- a/src/northbridge/intel/haswell/native_raminit/reg_structs.h ++++ b/src/northbridge/intel/haswell/native_raminit/reg_structs.h +@@ -335,6 +335,127 @@ union mcscheds_cbit_reg { + uint32_t raw; + }; + ++union reut_pat_cadb_prog_reg { ++ struct __packed { ++ uint32_t addr : 16; // Bits 15:0 ++ uint32_t : 8; // Bits 23:16 ++ uint32_t bank : 3; // Bits 26:24 ++ uint32_t : 5; // Bits 31:27 ++ uint32_t cs : 4; // Bits 35:32 ++ uint32_t : 4; // Bits 39:36 ++ uint32_t cmd : 3; // Bits 42:40 ++ uint32_t : 5; // Bits 47:43 ++ uint32_t odt : 4; // Bits 51:48 ++ uint32_t : 4; // Bits 55:52 ++ uint32_t cke : 4; // Bits 59:56 ++ uint32_t : 4; // Bits 63:60 ++ }; ++ uint64_t raw; ++ uint32_t raw32[2]; ++}; ++ ++union reut_pat_cadb_mrs_reg { ++ struct __packed { ++ uint32_t delay_gap : 3; // Bits 2:0 ++ uint32_t : 5; // Bits 7:3 ++ uint32_t start_ptr : 3; // Bits 10:8 ++ uint32_t : 5; // Bits 15:11 ++ uint32_t end_ptr : 3; // Bits 18:16 ++ uint32_t : 5; // Bits 23:19 ++ uint32_t curr_ptr : 3; // Bits 26:24 ++ uint32_t : 5; // Bits 31:27 ++ }; ++ uint32_t raw; ++}; ++ ++union reut_seq_cfg_reg { ++ struct __packed { ++ uint32_t : 3; // Bits 2:0 ++ uint32_t stop_base_seq_on_wrap_trigger : 1; // Bits 3:3 ++ uint32_t : 1; // Bits 4:4 ++ uint32_t address_update_rate_mode : 1; // Bits 5:5 ++ uint32_t : 1; // Bits 6:6 ++ uint32_t enable_dummy_reads : 1; // Bits 7:7 ++ uint32_t : 2; // Bits 9:8 ++ uint32_t enable_constant_write_strobe : 1; // Bits 10:10 ++ uint32_t global_control : 1; // Bits 11:11 ++ uint32_t initialization_mode : 2; // Bits 13:12 ++ uint32_t : 2; // Bits 15:14 ++ uint32_t early_steppings_loop_count : 5; // Bits 20:16 *** Not on C0 *** ++ uint32_t : 3; // Bits 23:21 ++ uint32_t subsequence_start_pointer : 3; // Bits 26:24 ++ uint32_t : 1; // Bits 27:27 ++ uint32_t subsequence_end_pointer : 3; // Bits 30:28 ++ uint32_t : 1; // Bits 31:31 ++ uint32_t start_test_delay : 10; // Bits 41:32 ++ uint32_t : 22; // Bits 63:42 ++ }; ++ uint64_t raw; ++ uint32_t raw32[2]; ++}; ++ ++union reut_seq_ctl_reg { ++ struct __packed { ++ uint32_t start_test : 1; // Bits 0:0 ++ uint32_t stop_test : 1; // Bits 1:1 ++ uint32_t clear_errors : 1; // Bits 2:2 ++ uint32_t : 1; // Bits 3:3 ++ uint32_t stop_on_error : 1; // Bits 4:4 ++ uint32_t : 27; // Bits 31:5 ++ }; ++ uint32_t raw; ++}; ++ ++union reut_global_err_reg { ++ struct __packed { ++ uint32_t ch_error : 2; // Bits 1:0 ++ uint32_t : 14; // Bits 15:2 ++ uint32_t ch_test_done : 2; // Bits 17:16 ++ uint32_t : 14; // Bits 31:18 ++ }; ++ uint32_t raw; ++}; ++ ++union reut_misc_cke_ctrl_reg { ++ struct __packed { ++ uint32_t cke_override : 4; // Bits 3:0 ++ uint32_t : 4; // Bits 7:4 ++ uint32_t cke_en_start_test_sync : 1; // Bits 8:8 ++ uint32_t : 7; // Bits 15:9 ++ uint32_t cke_on : 4; // Bits 19:16 ++ uint32_t : 12; // Bits 31:20 ++ }; ++ uint32_t raw; ++}; ++ ++union reut_misc_odt_ctrl_reg { ++ struct __packed { ++ uint32_t odt_override : 4; // Bits 3:0 ++ uint32_t : 12; // Bits 15:4 ++ uint32_t odt_on : 4; // Bits 19:16 ++ uint32_t : 11; // Bits 30:20 ++ uint32_t mpr_train_ddr_on : 1; // Bits 31:31 ++ }; ++ uint32_t raw; ++}; ++ ++union mcscheds_dft_misc_reg { ++ struct __packed { ++ uint32_t wdar : 1; // Bits 0:0 ++ uint32_t safe_mask_sel : 3; // Bits 3:1 ++ uint32_t force_rcv_en : 1; // Bits 4:4 ++ uint32_t : 3; // Bits 7:5 ++ uint32_t ddr_qualifier : 2; // Bits 9:8 ++ uint32_t qualifier_length : 2; // Bits 11:10 ++ uint32_t wdb_block_en : 1; // Bits 12:12 ++ uint32_t rt_dft_read_ptr : 4; // Bits 16:13 ++ uint32_t rt_dft_read_enable : 1; // Bits 17:17 ++ uint32_t rt_dft_read_sel_addr : 1; // Bits 18:18 ++ uint32_t : 13; // Bits 31:19 ++ }; ++ uint32_t raw; ++}; ++ + union tc_bank_reg { + struct __packed { + uint32_t tRCD : 5; // Bits 4:0 +@@ -428,6 +549,18 @@ union tc_srftp_reg { + uint32_t raw; + }; + ++union tc_mr2_shadow_reg { ++ struct __packed { ++ uint32_t mr2_shadow_low : 6; // Bits 5:0 ++ uint32_t srt_available : 2; // Bits 7:6 ++ uint32_t mr2_shadow_high : 3; // Bits 10:8 ++ uint32_t : 3; // Bits 13:11 ++ uint32_t addr_bit_swizzle : 2; // Bits 15:14 ++ uint32_t : 16; // Bits 31:16 ++ }; ++ uint32_t raw; ++}; ++ + union mcmain_command_rate_limit_reg { + struct __packed { + uint32_t enable_cmd_limit : 1; // Bits 0:0 +@@ -483,6 +616,27 @@ union mad_zr_reg { + uint32_t raw; + }; + ++union mc_init_state_g_reg { ++ struct __packed { ++ uint32_t pu_mrc_done : 1; // Bits 0:0 ++ uint32_t ddr_not_reset : 1; // Bits 1:1 ++ uint32_t : 1; // Bits 2:2 ++ uint32_t refresh_enable : 1; // Bits 3:3 ++ uint32_t : 1; // Bits 4:4 ++ uint32_t mc_init_done_ack : 1; // Bits 5:5 ++ uint32_t : 1; // Bits 6:6 ++ uint32_t mrc_done : 1; // Bits 7:7 ++ uint32_t safe_self_refresh : 1; // Bits 8:8 ++ uint32_t : 1; // Bits 9:9 ++ uint32_t hvm_gate_ddr_reset : 1; // Bits 10:10 ++ uint32_t : 11; // Bits 21:11 ++ uint32_t dclk_enable : 1; // Bits 22:22 ++ uint32_t reset_io : 1; // Bits 23:23 ++ uint32_t : 8; // Bits 31:24 ++ }; ++ uint32_t raw; ++}; ++ + /* Same definition for P_COMP, M_COMP, D_COMP */ + union pcu_comp_reg { + struct __packed { +diff --git a/src/northbridge/intel/haswell/native_raminit/reut.c b/src/northbridge/intel/haswell/native_raminit/reut.c +new file mode 100644 +index 0000000000..c55cdd9c7e +--- /dev/null ++++ b/src/northbridge/intel/haswell/native_raminit/reut.c +@@ -0,0 +1,196 @@ ++/* SPDX-License-Identifier: GPL-2.0-or-later */ ++ ++#include <console/console.h> ++#include <delay.h> ++#include <northbridge/intel/haswell/haswell.h> ++#include <timer.h> ++#include <types.h> ++ ++#include "raminit_native.h" ++ ++enum { ++ CADB_CMD_MRS = 0, ++ CADB_CMD_REF = 1, ++ CADB_CMD_PRE = 2, ++ CADB_CMD_ACT = 3, ++ CADB_CMD_WR = 4, ++ CADB_CMD_RD = 5, ++ CADB_CMD_ZQ = 6, ++ CADB_CMD_NOP = 7, ++}; ++ ++/* ++ * DDR3 rank mirror swaps the following pins: A3<->A4, A5<->A6, A7<->A8, BA0<->BA1 ++ * ++ * Note that the swapped bits are contiguous. We can use some XOR magic to swap the bits. ++ * Address lanes are at bits 0..15 and bank selects are at bits 24..26 on the REUT register. ++ */ ++#define MIRROR_BITS (BIT(24) | BIT(7) | BIT(5) | BIT(3)) ++static uint64_t cadb_prog_rank_mirror(const uint64_t cadb_prog) ++{ ++ /* First XOR: find which pairs of bits are different (need swapping) */ ++ const uint64_t tmp64 = (cadb_prog ^ (cadb_prog >> 1)) & MIRROR_BITS; ++ ++ /* Second XOR: invert the pairs of bits that have different values */ ++ return cadb_prog ^ (tmp64 | tmp64 << 1); ++} ++ ++static enum raminit_status reut_write_cadb_cmd( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t rankmask, ++ const uint8_t cmd, ++ const uint8_t bank, ++ const uint16_t valarr[NUM_SLOTRANKS], ++ const uint8_t delay) ++{ ++ union mcscheds_dft_misc_reg dft_misc = { ++ .raw = mchbar_read32(MCSCHEDS_DFT_MISC), ++ }; ++ dft_misc.ddr_qualifier = 0; ++ mchbar_write32(MCSCHEDS_DFT_MISC, dft_misc.raw); ++ ++ /* Pointer will be dynamically incremented after a write to CADB_PROG register */ ++ mchbar_write8(REUT_ch_PAT_CADB_WRITE_PTR(channel), 0); ++ ++ uint8_t count = 0; ++ for (uint8_t rank = 0; rank < NUM_SLOTRANKS; rank++) { ++ if (!(ctrl->rankmap[channel] & BIT(rank) & rankmask)) ++ continue; ++ ++ union reut_pat_cadb_prog_reg reut_cadb_prog = { ++ .addr = valarr[rank], ++ .bank = bank, ++ .cs = ~BIT(rank), /* CS is active low */ ++ .cmd = cmd, ++ .cke = 0xf, ++ }; ++ if (ctrl->rank_mirrored[channel] & BIT(rank)) ++ reut_cadb_prog.raw = cadb_prog_rank_mirror(reut_cadb_prog.raw); ++ ++ mchbar_write64(REUT_ch_PAT_CADB_PROG(channel), reut_cadb_prog.raw); ++ count++; ++ } ++ if (!count) { ++ printk(BIOS_ERR, "%s: rankmask is invalid\n", __func__); ++ return RAMINIT_STATUS_UNSPECIFIED_ERROR; /** FIXME: Is this needed? **/ ++ } ++ const union reut_pat_cadb_mrs_reg reut_cadb_mrs = { ++ .delay_gap = delay ? delay : 3, ++ .end_ptr = count - 1, ++ }; ++ mchbar_write32(REUT_ch_PAT_CADB_MRS(channel), reut_cadb_mrs.raw); ++ ++ const uint32_t reut_seq_cfg_save = mchbar_read32(REUT_ch_SEQ_CFG(channel)); ++ union reut_seq_cfg_reg reut_seq_cfg = { ++ .raw = reut_seq_cfg_save, ++ }; ++ reut_seq_cfg.global_control = 0; ++ reut_seq_cfg.initialization_mode = REUT_MODE_MRS; ++ mchbar_write32(REUT_ch_SEQ_CFG(channel), reut_seq_cfg.raw); ++ mchbar_write32(REUT_ch_SEQ_CTL(channel), (union reut_seq_ctl_reg) { ++ .start_test = 1, ++ .clear_errors = 1, ++ }.raw); ++ enum raminit_status status = RAMINIT_STATUS_SUCCESS; ++ union reut_global_err_reg reut_global_err; ++ struct stopwatch timer; ++ stopwatch_init_msecs_expire(&timer, 100); ++ do { ++ reut_global_err.raw = mchbar_read32(REUT_GLOBAL_ERR); ++ if (reut_global_err.ch_error & BIT(channel)) { ++ printk(BIOS_ERR, "Unexpected REUT error for channel %u\n", channel); ++ status = RAMINIT_STATUS_REUT_ERROR; ++ break; ++ } ++ if (stopwatch_expired(&timer)) { ++ printk(BIOS_ERR, "%s: REUT timed out!\n", __func__); ++ status = RAMINIT_STATUS_POLL_TIMEOUT; ++ break; ++ } ++ } while (!(reut_global_err.ch_test_done & BIT(channel))); ++ mchbar_write32(REUT_ch_SEQ_CTL(channel), (union reut_seq_ctl_reg) { ++ .clear_errors = 1, ++ }.raw); ++ mchbar_write32(REUT_ch_SEQ_CFG(channel), reut_seq_cfg_save); ++ return status; ++} ++ ++static enum raminit_status reut_write_cadb_cmd_all( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t rankmask, ++ const uint8_t cmd, ++ const uint8_t bank, ++ const uint16_t val, ++ const uint8_t delay) ++{ ++ const uint16_t valarr[NUM_SLOTRANKS] = { val, val, val, val }; ++ return reut_write_cadb_cmd(ctrl, channel, rankmask, cmd, bank, valarr, delay); ++} ++ ++void reut_issue_mrs( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t rankmask, ++ const uint8_t mr, ++ const uint16_t val) ++{ ++ reut_write_cadb_cmd_all(ctrl, channel, rankmask, CADB_CMD_MRS, mr, val, 0); ++} ++ ++void reut_issue_mrs_all( ++ struct sysinfo *ctrl, ++ const uint8_t channel, ++ const uint8_t mr, ++ const uint16_t val[NUM_SLOTS]) ++{ ++ const uint16_t valarr[NUM_SLOTRANKS] = { val[0], val[0], val[1], val[1] }; ++ reut_write_cadb_cmd(ctrl, channel, 0xf, CADB_CMD_MRS, mr, valarr, 0); ++} ++ ++enum raminit_status reut_issue_zq(struct sysinfo *ctrl, uint8_t chanmask, uint8_t zq_type) ++{ ++ /** TODO: Issuing ZQ commands differs for LPDDR **/ ++ if (ctrl->lpddr) ++ die("%s: LPDDR not yet supported in ZQ calibration\n"); ++ ++ uint8_t opcode; /* NOTE: Only used for LPDDR */ ++ uint16_t zq = 0; ++ switch (zq_type) { ++ case ZQ_INIT: ++ zq = BIT(10); ++ opcode = 0xff; ++ break; ++ case ZQ_LONG: ++ zq = BIT(10); ++ opcode = 0xab; ++ break; ++ case ZQ_SHORT: ++ opcode = 0x56; ++ break; ++ case ZQ_RESET: ++ opcode = 0xc3; ++ break; ++ default: ++ die("%s: ZQ type %u is invalid\n", zq_type); ++ } ++ ++ /* ZQCS on single-channel needs a longer delay */ ++ const uint8_t delay = zq_type == ZQ_SHORT && (!ctrl->dpc[0] || !ctrl->dpc[1]) ? 7 : 1; ++ enum raminit_status status = RAMINIT_STATUS_SUCCESS; ++ for (uint8_t channel = 0; channel < NUM_CHANNELS; channel++) { ++ if (!(BIT(channel) & chanmask) || !does_ch_exist(ctrl, channel)) ++ continue; ++ ++ status = reut_write_cadb_cmd_all(ctrl, channel, 0xf, CADB_CMD_ZQ, 0, zq, delay); ++ if (status) ++ break; ++ } ++ ++ /* Wait a bit after ZQ INIT and ZQCL commands */ ++ if (zq) ++ udelay(1); ++ ++ return status; ++} +diff --git a/src/northbridge/intel/haswell/registers/mchbar.h b/src/northbridge/intel/haswell/registers/mchbar.h +index 2acc5cbbc8..4fc78a7f43 100644 +--- a/src/northbridge/intel/haswell/registers/mchbar.h ++++ b/src/northbridge/intel/haswell/registers/mchbar.h +@@ -96,15 +96,36 @@ + + #define SC_WR_ADD_DELAY_ch(ch) _MCMAIN_C(0x40d0, ch) + ++#define REUT_ch_MISC_CKE_CTRL(ch) _MCMAIN_C(0x4190, ch) ++ ++#define REUT_ch_PAT_CADB_MRS(ch) _MCMAIN_C(0x419c, ch) ++ ++#define REUT_ch_PAT_CADB_WRITE_PTR(ch) _MCMAIN_C(0x41bc, ch) ++#define REUT_ch_PAT_CADB_PROG(ch) _MCMAIN_C(0x41c0, ch) ++ + #define TC_ZQCAL_ch(ch) _MCMAIN_C(0x4290, ch) + #define TC_RFP_ch(ch) _MCMAIN_C(0x4294, ch) + #define TC_RFTP_ch(ch) _MCMAIN_C(0x4298, ch) ++#define TC_MR2_SHADOW_ch(ch) _MCMAIN_C(0x429c, ch) + #define MC_INIT_STATE_ch(ch) _MCMAIN_C(0x42a0, ch) + #define TC_SRFTP_ch(ch) _MCMAIN_C(0x42a4, ch) + ++#define REUT_GLOBAL_ERR 0x4804 ++ ++#define REUT_ch_SEQ_CFG(ch) (0x48a8 + 8 * (ch)) ++ ++#define REUT_ch_SEQ_CTL(ch) (0x48b8 + 4 * (ch)) ++ + /* MCMAIN broadcast */ + #define MCSCHEDS_CBIT 0x4c20 + ++#define MCSCHEDS_DFT_MISC 0x4c30 ++ ++#define REUT_ERR_DATA_STATUS 0x4ce0 ++ ++#define REUT_MISC_CKE_CTRL 0x4d90 ++#define REUT_MISC_ODT_CTRL 0x4d94 ++ + #define MCMNTS_SC_WDBWM 0x4f8c + + /* MCDECS */ +diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h +index 74b4d50017..16bef5032a 100644 +--- a/src/southbridge/intel/lynxpoint/pch.h ++++ b/src/southbridge/intel/lynxpoint/pch.h +@@ -586,6 +586,8 @@ void mainboard_config_rcba(void); + #define ACPIIRQEN 0x31e0 /* 32bit */ + #define OIC 0x31fe /* 16bit */ + #define PRSTS 0x3310 /* 32bit */ ++#define PM_CFG2 0x333c /* 32bit */ ++#define PM_CFG2_DRAM_RESET_CTL (1 << 26) /* ULT only */ + #define PMSYNC_CONFIG 0x33c4 /* 32bit */ + #define PMSYNC_CONFIG2 0x33cc /* 32bit */ + #define SOFT_RESET_CTRL 0x38f4 +-- +2.39.2 + |