diff options
Diffstat (limited to 'resources/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch')
| -rw-r--r-- | resources/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch | 1038 |
1 files changed, 0 insertions, 1038 deletions
diff --git a/resources/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch b/resources/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch deleted file mode 100644 index c321d239..00000000 --- a/resources/coreboot/haswell/patches/0016-haswell-NRI-Add-DDR3-JEDEC-reset-and-init.patch +++ /dev/null @@ -1,1038 +0,0 @@ -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 - |