summaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/soc/intel/tigerlake/Makefile.inc1
-rw-r--r--src/soc/intel/tigerlake/include/soc/meminit_jsl.h119
-rw-r--r--src/soc/intel/tigerlake/meminit_jsl.c120
3 files changed, 240 insertions, 0 deletions
diff --git a/src/soc/intel/tigerlake/Makefile.inc b/src/soc/intel/tigerlake/Makefile.inc
index 56119f50db..89ef877db2 100644
--- a/src/soc/intel/tigerlake/Makefile.inc
+++ b/src/soc/intel/tigerlake/Makefile.inc
@@ -26,6 +26,7 @@ bootblock-y += p2sb.c
romstage-y += espi.c
romstage-y += gpio.c
romstage-$(CONFIG_SOC_INTEL_TIGERLAKE) += meminit_tgl.c
+romstage-$(CONFIG_SOC_INTEL_JASPERLAKE) += meminit_jsl.c
romstage-y += reset.c
ramstage-y += acpi.c
diff --git a/src/soc/intel/tigerlake/include/soc/meminit_jsl.h b/src/soc/intel/tigerlake/include/soc/meminit_jsl.h
new file mode 100644
index 0000000000..588ad5c58d
--- /dev/null
+++ b/src/soc/intel/tigerlake/include/soc/meminit_jsl.h
@@ -0,0 +1,119 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2020 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _SOC_JASPERLAKE_MEMCFG_INIT_H_
+#define _SOC_JASPERLAKE_MEMCFG_INIT_H_
+
+#include <stddef.h>
+#include <stdint.h>
+#include <fsp/soc_binding.h>
+
+/* Number of dq bits controlled per dqs */
+#define DQ_BITS_PER_DQS 8
+
+/* Number of memory packages, where a "package" represents a 64-bit solution */
+#define DDR_NUM_PACKAGES 2
+
+/* Number of DQ byte mappings */
+#define DDR_NUM_BYTE_MAPPINGS 6
+
+/* 64-bit Channel identification */
+enum {
+ DDR_CH0,
+ DDR_CH1,
+ DDR_NUM_CHANNELS
+};
+
+struct spd_by_pointer {
+ size_t spd_data_len;
+ uintptr_t spd_data_ptr;
+};
+
+enum mem_info_read_type {
+ READ_SPD_CBFS, /* Find spd file in CBFS. */
+ READ_SPD_MEMPTR /* Find spd data from pointer. */
+};
+
+struct spd_info {
+ enum mem_info_read_type read_type;
+ union spd_data_by {
+ /* To identify spd file when read_type is READ_SPD_CBFS. */
+ int spd_index;
+
+ /* To find spd data when read_type is READ_SPD_MEMPTR. */
+ struct spd_by_pointer spd_data_ptr_info;
+ } spd_spec;
+};
+
+/* Board-specific memory dq mapping information */
+struct mb_cfg {
+
+ /*
+ * For each channel, there are 6 sets of DQ byte mappings,
+ * where each set has a package 0 and a package 1 value (package 0
+ * represents the first 64-bit lpddr4 chip combination, and package 1
+ * represents the second 64-bit lpddr4 chip combination).
+ * The first three sets are for CLK, CMD, and CTL.
+ * The fsp package actually expects 6 sets, even though the last 3 sets
+ * are not used in JSL.
+ * We let the meminit_dq_dqs_map routine take care of clearing the
+ * unused fields for the caller.
+ * Note that dq_map is only used by LPDDR; it does not need to be
+ * initialized for designs using DDR4.
+ */
+ uint8_t dq_map[DDR_NUM_CHANNELS][DDR_NUM_BYTE_MAPPINGS][DDR_NUM_PACKAGES];
+
+ /*
+ * DQS CPU<>DRAM map Ch0 and Ch1. Each array entry represents a
+ * mapping of a dq bit on the CPU to the bit it's connected to on
+ * the memory part. The array index represents the dqs bit number
+ * on the memory part, and the values in the array represent which
+ * pin on the CPU that DRAM pin connects to.
+ * dqs_map is only used by LPDDR; same comments apply as for dq_map
+ * above.
+ */
+ uint8_t dqs_map[DDR_NUM_CHANNELS][DQ_BITS_PER_DQS];
+
+ /*
+ * Rcomp resistor values. These values represent the resistance in
+ * ohms of the three rcomp resistors attached to the DDR_COMP_0,
+ * DDR_COMP_1, and DDR_COMP_2 pins on the DRAM.
+ */
+ uint16_t rcomp_resistor[3];
+
+ /*
+ * Rcomp target values. These will typically be the following
+ * values for Jasper Lake : { 80, 40, 40, 40, 30 }
+ */
+ uint16_t rcomp_targets[5];
+
+ /*
+ * Early Command Training Enable/Disable Control
+ * 1 = enable, 0 = disable
+ */
+ uint8_t ect;
+
+ /* Board type */
+ uint8_t UserBd;
+};
+
+/*
+ * Initialize default memory configurations for Jasper Lake.
+ */
+
+void memcfg_init(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg,
+ const struct spd_info *spd_info, bool half_populated);
+
+#endif /* _SOC_JASPERLAKE_MEMCFG_INIT_H_ */
diff --git a/src/soc/intel/tigerlake/meminit_jsl.c b/src/soc/intel/tigerlake/meminit_jsl.c
new file mode 100644
index 0000000000..f977ce2cc3
--- /dev/null
+++ b/src/soc/intel/tigerlake/meminit_jsl.c
@@ -0,0 +1,120 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2020 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <assert.h>
+#include <console/console.h>
+#include <fsp/util.h>
+#include <soc/meminit_jsl.h>
+#include <spd_bin.h>
+#include <string.h>
+
+static void spd_read_from_cbfs(const struct spd_info *spd_info, uintptr_t *spd_data_ptr,
+ size_t *spd_data_len)
+{
+ struct region_device spd_rdev;
+ size_t spd_index = spd_info->spd_spec.spd_index;
+
+ printk(BIOS_DEBUG, "SPD INDEX = %lu\n", spd_index);
+ if (get_spd_cbfs_rdev(&spd_rdev, spd_index) < 0)
+ die("spd.bin not found or incorrect index\n");
+
+ *spd_data_len = region_device_sz(&spd_rdev);
+
+ /* Memory leak is ok since we have memory mapped boot media */
+ assert(CONFIG(BOOT_DEVICE_MEMORY_MAPPED));
+
+ *spd_data_ptr = (uintptr_t)rdev_mmap_full(&spd_rdev);
+}
+
+static void get_spd_data(const struct spd_info *spd_info, uintptr_t *spd_data_ptr,
+ size_t *spd_data_len)
+{
+ if (spd_info->read_type == READ_SPD_MEMPTR) {
+ *spd_data_ptr = spd_info->spd_spec.spd_data_ptr_info.spd_data_ptr;
+ *spd_data_len = spd_info->spd_spec.spd_data_ptr_info.spd_data_len;
+ return;
+ }
+
+ if (spd_info->read_type == READ_SPD_CBFS) {
+ spd_read_from_cbfs(spd_info, spd_data_ptr, spd_data_len);
+ return;
+ }
+
+ die("no valid way to read SPD info");
+}
+
+static void meminit_dq_dqs_map(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg,
+ bool half_populated)
+{
+ memcpy(&mem_cfg->RcompResistor, &board_cfg->rcomp_resistor,
+ sizeof(mem_cfg->RcompResistor));
+
+ memcpy(&mem_cfg->RcompTarget, &board_cfg->rcomp_targets,
+ sizeof(mem_cfg->RcompTarget));
+
+ memcpy(&mem_cfg->DqByteMapCh0, &board_cfg->dq_map[DDR_CH0],
+ sizeof(board_cfg->dq_map[DDR_CH0]));
+
+ memcpy(&mem_cfg->DqsMapCpu2DramCh0, &board_cfg->dqs_map[DDR_CH0],
+ sizeof(board_cfg->dqs_map[DDR_CH0]));
+
+ if (half_populated)
+ return;
+
+ memcpy(&mem_cfg->DqByteMapCh1, &board_cfg->dq_map[DDR_CH1],
+ sizeof(board_cfg->dq_map[DDR_CH1]));
+
+ memcpy(&mem_cfg->DqsMapCpu2DramCh1, &board_cfg->dqs_map[DDR_CH1],
+ sizeof(board_cfg->dqs_map[DDR_CH1]));
+}
+
+static void meminit_channels(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg,
+ uintptr_t spd_data_ptr, bool half_populated)
+{
+ /* Channel 0 */
+ mem_cfg->MemorySpdPtr00 = spd_data_ptr;
+ mem_cfg->MemorySpdPtr01 = 0;
+
+ if (half_populated) {
+ printk(BIOS_INFO, "%s: DRAM half-populated\n", __func__);
+ spd_data_ptr = 0;
+ }
+
+ /* Channel 1 */
+ mem_cfg->MemorySpdPtr10 = spd_data_ptr;
+ mem_cfg->MemorySpdPtr11 = 0;
+
+ meminit_dq_dqs_map(mem_cfg, board_cfg, half_populated);
+}
+
+/* Initialize onboard memory configurations for lpddr4x */
+void memcfg_init(FSP_M_CONFIG *mem_cfg, const struct mb_cfg *board_cfg,
+ const struct spd_info *spd_info, bool half_populated)
+{
+ size_t spd_data_len;
+ uintptr_t spd_data_ptr;
+
+ memset(&mem_cfg->SpdAddressTable, 0, sizeof(mem_cfg->SpdAddressTable));
+ get_spd_data(spd_info, &spd_data_ptr, &spd_data_len);
+ print_spd_info((unsigned char *)spd_data_ptr);
+
+ mem_cfg->MemorySpdDataLen = spd_data_len;
+ meminit_channels(mem_cfg, board_cfg, spd_data_ptr, half_populated);
+
+ /* Early Command Training Enabled */
+ mem_cfg->ECT = board_cfg->ect;
+
+ mem_cfg->UserBd = board_cfg->UserBd;
+}