diff options
Diffstat (limited to 'resources/coreboot/haswell/patches/0019-haswell-NRI-Add-range-tracking-library.patch')
| -rw-r--r-- | resources/coreboot/haswell/patches/0019-haswell-NRI-Add-range-tracking-library.patch | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/resources/coreboot/haswell/patches/0019-haswell-NRI-Add-range-tracking-library.patch b/resources/coreboot/haswell/patches/0019-haswell-NRI-Add-range-tracking-library.patch deleted file mode 100644 index f433b043..00000000 --- a/resources/coreboot/haswell/patches/0019-haswell-NRI-Add-range-tracking-library.patch +++ /dev/null @@ -1,222 +0,0 @@ -From 9fba0468e75877cbda62f5eaeef1946d6489a8f9 Mon Sep 17 00:00:00 2001 -From: Angel Pons <th3fanbus@gmail.com> -Date: Sun, 8 May 2022 00:56:00 +0200 -Subject: [PATCH 19/26] haswell NRI: Add range tracking library - -Implement a small library used to keep track of passing ranges. This -will be used by 1D training algorithms when margining some parameter. - -Change-Id: I8718e85165160afd7c0c8e730b5ce6c9c00f8a60 -Signed-off-by: Angel Pons <th3fanbus@gmail.com> ---- - .../intel/haswell/native_raminit/Makefile.inc | 1 + - .../intel/haswell/native_raminit/ranges.c | 109 ++++++++++++++++++ - .../intel/haswell/native_raminit/ranges.h | 68 +++++++++++ - 3 files changed, 178 insertions(+) - create mode 100644 src/northbridge/intel/haswell/native_raminit/ranges.c - create mode 100644 src/northbridge/intel/haswell/native_raminit/ranges.h - -diff --git a/src/northbridge/intel/haswell/native_raminit/Makefile.inc b/src/northbridge/intel/haswell/native_raminit/Makefile.inc -index 6e1b365602..2da950771d 100644 ---- a/src/northbridge/intel/haswell/native_raminit/Makefile.inc -+++ b/src/northbridge/intel/haswell/native_raminit/Makefile.inc -@@ -9,6 +9,7 @@ romstage-y += io_comp_control.c - romstage-y += memory_map.c - romstage-y += raminit_main.c - romstage-y += raminit_native.c -+romstage-y += ranges.c - romstage-y += reut.c - romstage-y += setup_wdb.c - romstage-y += spd_bitmunching.c -diff --git a/src/northbridge/intel/haswell/native_raminit/ranges.c b/src/northbridge/intel/haswell/native_raminit/ranges.c -new file mode 100644 -index 0000000000..cdebc1fa66 ---- /dev/null -+++ b/src/northbridge/intel/haswell/native_raminit/ranges.c -@@ -0,0 +1,109 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+ -+#include <types.h> -+ -+#include "ranges.h" -+ -+void linear_record_pass( -+ struct linear_train_data *const data, -+ const bool pass, -+ const int32_t value, -+ const int32_t start, -+ const int32_t step) -+{ -+ /* If this is the first time, initialize all values */ -+ if (value == start) { -+ /* -+ * If value passed, create a zero-length region for the current value, -+ * which may be extended as long as the successive values are passing. -+ * -+ * Otherwise, create a zero-length range for the preceding value. This -+ * range cannot be extended by other passing values, which is desired. -+ */ -+ data->current.start = start - (pass ? 0 : step); -+ data->current.end = data->current.start; -+ data->largest = data->current; -+ } else if (pass) { -+ /* If this pass is not contiguous, it belongs to a new region */ -+ if (data->current.end != (value - step)) -+ data->current.start = value; -+ -+ /* Update end of current region */ -+ data->current.end = value; -+ -+ /* Update largest region */ -+ if (range_width(data->current) > range_width(data->largest)) -+ data->largest = data->current; -+ } -+} -+ -+void phase_record_pass( -+ struct phase_train_data *const data, -+ const bool pass, -+ const int32_t value, -+ const int32_t start, -+ const int32_t step) -+{ -+ /* If this is the first time, initialize all values */ -+ if (value == start) { -+ /* -+ * If value passed, create a zero-length region for the current value, -+ * which may be extended as long as the successive values are passing. -+ * -+ * Otherwise, create a zero-length range for the preceding value. This -+ * range cannot be extended by other passing values, which is desired. -+ */ -+ data->current.start = start - (pass ? 0 : step); -+ data->current.end = data->current.start; -+ data->largest = data->current; -+ data->initial = data->current; -+ return; -+ } -+ if (!pass) -+ return; -+ -+ /* Update initial region */ -+ if (data->initial.end == (value - step)) -+ data->initial.end = value; -+ -+ /* If this pass is not contiguous, it belongs to a new region */ -+ if (data->current.end != (value - step)) -+ data->current.start = value; -+ -+ /* Update end of current region */ -+ data->current.end = value; -+ -+ /* Update largest region */ -+ if (range_width(data->current) > range_width(data->largest)) -+ data->largest = data->current; -+} -+ -+void phase_append_initial_to_current( -+ struct phase_train_data *const data, -+ const int32_t start, -+ const int32_t step) -+{ -+ /* If initial region is valid and does not overlap, append it */ -+ if (data->initial.start == start && data->initial.end != data->current.end) -+ data->current.end += step + range_width(data->initial); -+ -+ /* Update largest region */ -+ if (range_width(data->current) > range_width(data->largest)) -+ data->largest = data->current; -+} -+ -+void phase_append_current_to_initial( -+ struct phase_train_data *const data, -+ const int32_t start, -+ const int32_t step) -+{ -+ /* If initial region is valid and does not overlap, append it */ -+ if (data->initial.start == start && data->initial.end != data->current.end) { -+ data->initial.start -= (step + range_width(data->current)); -+ data->current = data->initial; -+ } -+ -+ /* Update largest region */ -+ if (range_width(data->current) > range_width(data->largest)) -+ data->largest = data->current; -+} -diff --git a/src/northbridge/intel/haswell/native_raminit/ranges.h b/src/northbridge/intel/haswell/native_raminit/ranges.h -new file mode 100644 -index 0000000000..235392df96 ---- /dev/null -+++ b/src/northbridge/intel/haswell/native_raminit/ranges.h -@@ -0,0 +1,68 @@ -+/* SPDX-License-Identifier: GPL-2.0-or-later */ -+ -+#ifndef HASWELL_RAMINIT_RANGES_H -+#define HASWELL_RAMINIT_RANGES_H -+ -+#include <types.h> -+ -+/* -+ * Many algorithms shmoo some parameter to determine the largest passing -+ * range. Provide a common implementation to avoid redundant boilerplate. -+ */ -+struct passing_range { -+ int32_t start; -+ int32_t end; -+}; -+ -+/* Structure for linear parameters, such as roundtrip delays */ -+struct linear_train_data { -+ struct passing_range current; -+ struct passing_range largest; -+}; -+ -+/* -+ * Phase ranges are "circular": the first and last indices are contiguous. -+ * To correctly determine the largest passing range, one has to combine -+ * the initial range and the current range when processing the last index. -+ */ -+struct phase_train_data { -+ struct passing_range initial; -+ struct passing_range current; -+ struct passing_range largest; -+}; -+ -+static inline int32_t range_width(const struct passing_range range) -+{ -+ return range.end - range.start; -+} -+ -+static inline int32_t range_center(const struct passing_range range) -+{ -+ return range.start + range_width(range) / 2; -+} -+ -+void linear_record_pass( -+ struct linear_train_data *data, -+ bool pass, -+ int32_t value, -+ int32_t start, -+ int32_t step); -+ -+void phase_record_pass( -+ struct phase_train_data *data, -+ bool pass, -+ int32_t value, -+ int32_t start, -+ int32_t step); -+ -+void phase_append_initial_to_current( -+ struct phase_train_data *data, -+ int32_t start, -+ int32_t step); -+ -+void phase_append_current_to_initial( -+ struct phase_train_data *data, -+ int32_t start, -+ int32_t step); -+ -+#endif --- -2.39.2 - |