mainboard/system76: Add System76 Lemur Pro (lemp9)

The System76 Lemur Pro (lemp9) is an upcoming laptop computer. Support
in coreboot is developed by System76 and provided as the default
firmware option. Testing is done on a pre-production model expected to
be identical from a firmware perspective to the production model.

Working:
- Payload
    - Tianocore
- CPU
    - Intel i7-10510U
    - Intel i5-10210U
- EC
    - ITE IT5570E running https://github.com/system76/ec
    - Backlit Keyboard, with standard PS/2 keycodes and SCI hotkeys
    - Battery
    - Charger, using AC adapter or USB-C PD
    - Suspend/resume
    - Touchpad
- GPU
    - Intel UHD Graphics 620
    - GOP driver is recommended, VBT is provided
    - eDP 14-inch 1920x1080 LCD
    - HDMI video
    - USB-C DisplayPort video
- Memory
    - Channel 0: 8-GB on-board DDR4 Samsung K4AAG165WA-BCTD
    - Channel 1: 8-GB/16-GB/32-GB DDR4 SO-DIMM
- Networking
    - M.2 PCIe/CNVi WiFi/Bluetooth
- Sound
    - Realtek ALC293D
    - Internal speaker
    - Internal microphone
    - Combined headphone/microphone 3.5-mm jack
    - HDMI audio
    - USB-C DisplayPort audio
- Storage
    - M.2 PCIe/SATA SSD-1
    - M.2 PCIe/SATA SSD-2
    - RTS5227S MicroSD card reader
- USB
    - 1280x720 CCD camera
    - USB 3.1 Gen 2 Type-C (left)
    - USB 3.1 Gen 2 Type-A (left)
    - USB 3.1 Gen 1 Type-A (right)

Not working:
- TPM2 - SPI bus 0, chip select 2 is used. Chip selects other than 0
  are not currently supported by the intel fast_spi driver.

Signed-off-by: Jeremy Soller <jeremy@system76.com>
Change-Id: Ib0a32bbc6f89a662085ab4a254676bc1fad7dc60
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38463
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/src/mainboard/system76/lemp9/romstage.c b/src/mainboard/system76/lemp9/romstage.c
new file mode 100644
index 0000000000..6b9b02eb92
--- /dev/null
+++ b/src/mainboard/system76/lemp9/romstage.c
@@ -0,0 +1,97 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019 System76
+ *
+ * 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 <soc/cnl_memcfg_init.h>
+#include <soc/romstage.h>
+
+static const struct cnl_mb_cfg memcfg = {
+	/* Parameters required to access SPD for CH0D0/CH0D1/CH1D0/CH1D1. */
+	.spd[0] = {
+		.read_type = READ_SPD_CBFS,
+		.spd_spec = {.spd_index = 0},
+	},
+	.spd[1] = {.read_type = NOT_EXISTING},
+	.spd[2] = {
+		.read_type = READ_SMBUS,
+		.spd_spec = {.spd_smbus_address = 0xa4},
+	},
+	.spd[3] = {.read_type = NOT_EXISTING},
+
+	/*
+	 * For each channel, there are 3 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, but the last 3 sets are
+	 * not used in CNL, so we only define the three sets that are used
+	 * and let the meminit_lpddr4() routine take care of clearing the
+	 * unused fields for the caller.
+	 */
+	.dq_map[DDR_CH0] = {
+		{0x0F, 0xF0}, {0x00, 0xF0}, {0x0F, 0xF0},
+		//{0x0F, 0x00}, {0xFF, 0x00}, {0xFF, 0x00}
+	},
+	.dq_map[DDR_CH1] = {
+		{0x33, 0xCC}, {0x00, 0xCC}, {0x33, 0xCC},
+		//{0x33, 0x00}, {0xFF, 0x00}, {0xFF, 0x00}
+	},
+
+	/*
+	 * 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[DDR_CH0] = {0, 1, 2, 3, 4, 5, 6, 7},
+	.dqs_map[DDR_CH1] = {1, 0, 2, 3, 4, 5, 6, 7},
+
+	/*
+	 * 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.
+	 */
+	.rcomp_resistor = { 121, 81, 100 },
+
+	/*
+	 * Rcomp target values.  These will typically be the following
+	 * values for Cannon Lake : { 80, 40, 40, 40, 30 }
+	 */
+	.rcomp_targets = { 100, 40, 20, 20, 26 },
+
+	/*
+	 * Indicates whether memory is interleaved.
+	 * Set to 1 for an interleaved design,
+	 * set to 0 for non-interleaved design.
+	 */
+	.dq_pins_interleaved = 1,
+
+	/*
+	 * VREF_CA configuration.
+	 * Set to 0 VREF_CA goes to both CH_A and CH_B,
+	 * set to 1 VREF_CA goes to CH_A and VREF_DQ_A goes to CH_B,
+	 * set to 2 VREF_CA goes to CH_A and VREF_DQ_B goes to CH_B.
+	 */
+	.vref_ca_config = 2,
+
+	/* Early Command Training */
+	.ect = 0,
+};
+
+void mainboard_memory_init_params(FSPM_UPD *memupd)
+{
+	cannonlake_memcfg_init(&memupd->FspmConfig, &memcfg);
+}