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-rw-r--r--config/coreboot/haswell/patches/0002-haswell-NRI-Post-process-selected-timings.patch249
1 files changed, 0 insertions, 249 deletions
diff --git a/config/coreboot/haswell/patches/0002-haswell-NRI-Post-process-selected-timings.patch b/config/coreboot/haswell/patches/0002-haswell-NRI-Post-process-selected-timings.patch
deleted file mode 100644
index 0cc95cdd..00000000
--- a/config/coreboot/haswell/patches/0002-haswell-NRI-Post-process-selected-timings.patch
+++ /dev/null
@@ -1,249 +0,0 @@
-From 42b21fdce8c8bade53d9d86515f88b0665a4c1b1 Mon Sep 17 00:00:00 2001
-From: Angel Pons <th3fanbus@gmail.com>
-Date: Sat, 7 May 2022 16:29:55 +0200
-Subject: [PATCH 02/20] haswell NRI: Post-process selected timings
-
-Once the MPLL has been initialised, convert the timings from the SPD to
-be in DCLKs, which is what the hardware expects. In addition, calculate
-the values for tREFI and tXP.
-
-Change-Id: Id02caf858f75b9e08016762b3aefda282b274386
-Signed-off-by: Angel Pons <th3fanbus@gmail.com>
----
- .../intel/haswell/native_raminit/Makefile.mk | 1 +
- .../haswell/native_raminit/lookup_timings.c | 62 +++++++++++
- .../haswell/native_raminit/raminit_main.c | 1 +
- .../haswell/native_raminit/raminit_native.h | 8 ++
- .../haswell/native_raminit/spd_bitmunching.c | 100 ++++++++++++++++++
- 5 files changed, 172 insertions(+)
- create mode 100644 src/northbridge/intel/haswell/native_raminit/lookup_timings.c
-
-diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.mk b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-index c125d84f0b..2769e0bbb4 100644
---- a/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.mk
-@@ -1,5 +1,6 @@
- ## SPDX-License-Identifier: GPL-2.0-or-later
-
-+romstage-y += lookup_timings.c
- romstage-y += init_mpll.c
- romstage-y += io_comp_control.c
- romstage-y += raminit_main.c
-diff --git a/src/northbridge/intel/haswell/native_raminit/lookup_timings.c b/src/northbridge/intel/haswell/native_raminit/lookup_timings.c
-new file mode 100644
-index 0000000000..8b81c7c341
---- /dev/null
-+++ b/src/northbridge/intel/haswell/native_raminit/lookup_timings.c
-@@ -0,0 +1,62 @@
-+/* SPDX-License-Identifier: GPL-2.0-or-later */
-+
-+#include <commonlib/bsd/clamp.h>
-+#include <types.h>
-+
-+#include "raminit_native.h"
-+
-+struct timing_lookup {
-+ uint32_t clock;
-+ uint32_t value;
-+};
-+
-+static uint32_t lookup_timing(
-+ const uint32_t mem_clock_mhz,
-+ const struct timing_lookup *const lookup,
-+ const size_t length)
-+{
-+ /* Fall back to the last index */
-+ size_t i;
-+ for (i = 0; i < length - 1; i++) {
-+ /* Account for imprecise frequency values */
-+ if ((mem_clock_mhz - 5) <= lookup[i].clock)
-+ break;
-+ }
-+ return lookup[i].value;
-+}
-+
-+static const uint32_t fmax = UINT32_MAX;
-+
-+uint8_t get_tCWL(const uint32_t mem_clock_mhz)
-+{
-+ const struct timing_lookup lut[] = {
-+ { 400, 5 },
-+ { 533, 6 },
-+ { 666, 7 },
-+ { 800, 8 },
-+ { 933, 9 },
-+ { 1066, 10 },
-+ { 1200, 11 },
-+ { fmax, 12 },
-+ };
-+ return lookup_timing(mem_clock_mhz, lut, ARRAY_SIZE(lut));
-+}
-+
-+/* tREFI = 7800 ns * DDR MHz */
-+uint32_t get_tREFI(const uint32_t mem_clock_mhz)
-+{
-+ return (mem_clock_mhz * 7800) / 1000;
-+}
-+
-+uint32_t get_tXP(const uint32_t mem_clock_mhz)
-+{
-+ const struct timing_lookup lut[] = {
-+ { 400, 3 },
-+ { 666, 4 },
-+ { 800, 5 },
-+ { 933, 6 },
-+ { 1066, 7 },
-+ { fmax, 8 },
-+ };
-+ return lookup_timing(mem_clock_mhz, lut, ARRAY_SIZE(lut));
-+}
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_main.c b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-index bf745e943f..2fea658415 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_main.c
-@@ -21,6 +21,7 @@ struct task_entry {
- static const struct task_entry cold_boot[] = {
- { collect_spd_info, true, "PROCSPD", },
- { initialise_mpll, true, "INITMPLL", },
-+ { convert_timings, true, "CONVTIM", },
- };
-
- /* Return a generic stepping value to make stepping checks simpler */
-diff --git a/src/northbridge/intel/haswell/native_raminit/raminit_native.h b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-index a54581abc7..01e5ed1bd6 100644
---- a/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-+++ b/src/northbridge/intel/haswell/native_raminit/raminit_native.h
-@@ -78,6 +78,9 @@ struct sysinfo {
- uint32_t tCWL;
- uint32_t tCMD;
-
-+ uint32_t tREFI;
-+ uint32_t tXP;
-+
- uint8_t lanes; /* 8 or 9 */
- uint8_t chanmap;
- uint8_t dpc[NUM_CHANNELS]; /* DIMMs per channel */
-@@ -96,7 +99,12 @@ void raminit_main(enum raminit_boot_mode bootmode);
-
- enum raminit_status collect_spd_info(struct sysinfo *ctrl);
- enum raminit_status initialise_mpll(struct sysinfo *ctrl);
-+enum raminit_status convert_timings(struct sysinfo *ctrl);
-
- enum raminit_status wait_for_first_rcomp(void);
-
-+uint8_t get_tCWL(uint32_t mem_clock_mhz);
-+uint32_t get_tREFI(uint32_t mem_clock_mhz);
-+uint32_t get_tXP(uint32_t mem_clock_mhz);
-+
- #endif
-diff --git a/src/northbridge/intel/haswell/native_raminit/spd_bitmunching.c b/src/northbridge/intel/haswell/native_raminit/spd_bitmunching.c
-index 2dab8504c4..7d98341a7e 100644
---- a/src/northbridge/intel/haswell/native_raminit/spd_bitmunching.c
-+++ b/src/northbridge/intel/haswell/native_raminit/spd_bitmunching.c
-@@ -204,3 +204,103 @@ enum raminit_status collect_spd_info(struct sysinfo *ctrl)
- get_spd_data(ctrl);
- return find_common_spd_parameters(ctrl);
- }
-+
-+#define MIN_CWL 5
-+#define MAX_CWL 12
-+
-+/* Except for tCK, hardware expects all timing values in DCLKs, not nanoseconds */
-+enum raminit_status convert_timings(struct sysinfo *ctrl)
-+{
-+ /*
-+ * Obtain all required timing values, in DCLKs.
-+ */
-+
-+ /* Convert primary timings from nanoseconds to DCLKs */
-+ ctrl->tAA = DIV_ROUND_UP(ctrl->tAA, ctrl->tCK);
-+ ctrl->tWR = DIV_ROUND_UP(ctrl->tWR, ctrl->tCK);
-+ ctrl->tRCD = DIV_ROUND_UP(ctrl->tRCD, ctrl->tCK);
-+ ctrl->tRRD = DIV_ROUND_UP(ctrl->tRRD, ctrl->tCK);
-+ ctrl->tRP = DIV_ROUND_UP(ctrl->tRP, ctrl->tCK);
-+ ctrl->tRAS = DIV_ROUND_UP(ctrl->tRAS, ctrl->tCK);
-+ ctrl->tRC = DIV_ROUND_UP(ctrl->tRC, ctrl->tCK);
-+ ctrl->tRFC = DIV_ROUND_UP(ctrl->tRFC, ctrl->tCK);
-+ ctrl->tWTR = DIV_ROUND_UP(ctrl->tWTR, ctrl->tCK);
-+ ctrl->tRTP = DIV_ROUND_UP(ctrl->tRTP, ctrl->tCK);
-+ ctrl->tFAW = DIV_ROUND_UP(ctrl->tFAW, ctrl->tCK);
-+ ctrl->tCWL = DIV_ROUND_UP(ctrl->tCWL, ctrl->tCK);
-+ ctrl->tCMD = DIV_ROUND_UP(ctrl->tCMD, ctrl->tCK);
-+
-+ /* Constrain primary timings to hardware limits */
-+ /** TODO: complain when clamping? **/
-+ ctrl->tAA = clamp_u32(4, ctrl->tAA, 24);
-+ ctrl->tWR = clamp_u32(5, ctrl->tWR, 16);
-+ ctrl->tRCD = clamp_u32(4, ctrl->tRCD, 20);
-+ ctrl->tRRD = clamp_u32(4, ctrl->tRRD, 65535);
-+ ctrl->tRP = clamp_u32(4, ctrl->tRP, 15);
-+ ctrl->tRAS = clamp_u32(10, ctrl->tRAS, 40);
-+ ctrl->tRC = clamp_u32(1, ctrl->tRC, 4095);
-+ ctrl->tRFC = clamp_u32(1, ctrl->tRFC, 511);
-+ ctrl->tWTR = clamp_u32(4, ctrl->tWTR, 10);
-+ ctrl->tRTP = clamp_u32(4, ctrl->tRTP, 15);
-+ ctrl->tFAW = clamp_u32(10, ctrl->tFAW, 54);
-+
-+ /** TODO: Honor tREFI from XMP **/
-+ ctrl->tREFI = get_tREFI(ctrl->mem_clock_mhz);
-+ ctrl->tXP = get_tXP(ctrl->mem_clock_mhz);
-+
-+ /*
-+ * Check some values, and adjust them if necessary.
-+ */
-+
-+ /* If tWR cannot be written into DDR3 MR0, adjust it */
-+ switch (ctrl->tWR) {
-+ case 9:
-+ case 11:
-+ case 13:
-+ case 15:
-+ ctrl->tWR++;
-+ }
-+
-+ /* If tCWL is not supported or unspecified, look up a reasonable default */
-+ if (ctrl->tCWL < MIN_CWL || ctrl->tCWL > MAX_CWL)
-+ ctrl->tCWL = get_tCWL(ctrl->mem_clock_mhz);
-+
-+ /* This is needed to support ODT properly on 2DPC */
-+ if (ctrl->tAA - ctrl->tCWL > 4)
-+ ctrl->tCWL = ctrl->tAA - 4;
-+
-+ /* If tCMD is invalid, use a guesstimate default */
-+ if (!ctrl->tCMD) {
-+ ctrl->tCMD = MAX(ctrl->dpc[0], ctrl->dpc[1]);
-+ printk(RAM_DEBUG, "tCMD was zero, picking a guesstimate value\n");
-+ }
-+ ctrl->tCMD = clamp_u32(1, ctrl->tCMD, 3);
-+
-+ /*
-+ * Print final timings.
-+ */
-+
-+ /* tCK is special */
-+ printk(BIOS_DEBUG, "Selected tCK : %u ps\n", ctrl->tCK * 1000 / 256);
-+
-+ /* Primary timings */
-+ printk(BIOS_DEBUG, "Selected tAA : %uT\n", ctrl->tAA);
-+ printk(BIOS_DEBUG, "Selected tWR : %uT\n", ctrl->tWR);
-+ printk(BIOS_DEBUG, "Selected tRCD : %uT\n", ctrl->tRCD);
-+ printk(BIOS_DEBUG, "Selected tRRD : %uT\n", ctrl->tRRD);
-+ printk(BIOS_DEBUG, "Selected tRP : %uT\n", ctrl->tRP);
-+ printk(BIOS_DEBUG, "Selected tRAS : %uT\n", ctrl->tRAS);
-+ printk(BIOS_DEBUG, "Selected tRC : %uT\n", ctrl->tRC);
-+ printk(BIOS_DEBUG, "Selected tRFC : %uT\n", ctrl->tRFC);
-+ printk(BIOS_DEBUG, "Selected tWTR : %uT\n", ctrl->tWTR);
-+ printk(BIOS_DEBUG, "Selected tRTP : %uT\n", ctrl->tRTP);
-+ printk(BIOS_DEBUG, "Selected tFAW : %uT\n", ctrl->tFAW);
-+ printk(BIOS_DEBUG, "Selected tCWL : %uT\n", ctrl->tCWL);
-+ printk(BIOS_DEBUG, "Selected tCMD : %uT\n", ctrl->tCMD);
-+
-+ /* Derived timings */
-+ printk(BIOS_DEBUG, "Selected tREFI : %uT\n", ctrl->tREFI);
-+ printk(BIOS_DEBUG, "Selected tXP : %uT\n", ctrl->tXP);
-+
-+ return RAMINIT_STATUS_SUCCESS;
-+}
---
-2.39.2
-
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-05 06:59:43 +0000