soc/intel/jasperlake: Add Jasper Lake SoC support

This is a copy patch from Tiger Lake SoC code.

The only changes done on top of copy is changing below configs:
1. SOC_INTEL_TIGERLAKE -> SOC_INTEL_TIGERLAKE_COPY
2. SOC_INTEL_JASPERLAKE -> SOC_INTEL_JASPERLAKE_COPY
3. SOC_INTEL_TIGERLAKE_BASE -> SOC_INTEL_TIGERLAKE_BASE_COPY

We started with initial assumption that JSL and TGL can co-exist.
But now we see the SoC code in Tiger Lake is relying on too many
compile-time directives to make two SoCs co-exist. Some of the
differences are listed below:

-> Kconfig: Multiple Kconfig options using
   if SOC_INTEL_{TIGERLAKE/JASPERLAKE}

-> GPIO: GPIO communities have their own differences.
   This requires conditional checks in gpio.asl, gpio.c, gpio*.h,
   pmc.h and gpio.asl

-> PCI IRQs: Set up differently for JSL and TGL

-> PCIe: Number of Root ports differ.

-> eMMC/SD: Only supported on JSL.

-> USB: Number of USB port are different for JSL and TGL.

-> Memory configuration parameters are different for JSL and TGL.

-> FSP parameters for JSL and TGL are different.

The split of JSL and TGL SoC code is planned as below:

1. Copy Tiger Lake SoC code as is, and change SoC Kconfig
   to avoid conflicts with current mainboard builds.

2. Clean up TGL code out of copy patch done in step 1.
   Make it JSL only code. The SoC config still kept as
   SOC_INTEL_JASPERLAKE_COPY.

3. Change JSL SOC Kconfig from SOC_INTEL_JASPERLAKE_COPY to
   SOC_INTEL_JASPERLAKE, dedede and jasperlake_rvp boards can
   bind to SoC code from soc/intel/jasperlake. This step establishes
   Jasper Lake as a separate SoC.

4. Clean up current JSL code from TGL code. This step establishes
   Tiger Lake as a separate SoC.

BUG=b:150217037

Change-Id: I9c33f478a2f8ed5e2d8e7815821d13044d35d388
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39823
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/src/soc/intel/jasperlake/meminit_jsl.c b/src/soc/intel/jasperlake/meminit_jsl.c
new file mode 100644
index 0000000000..c68d2100fc
--- /dev/null
+++ b/src/soc/intel/jasperlake/meminit_jsl.c
@@ -0,0 +1,126 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ *
+ * 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)
+{
+
+	if (spd_info->read_type == READ_SMBUS) {
+		for (int i = 0; i < NUM_DIMM_SLOT; i++)
+			mem_cfg->SpdAddressTable[i] = spd_info->spd_spec.spd_smbus_address[i];
+
+		meminit_dq_dqs_map(mem_cfg, board_cfg, half_populated);
+	} else {
+		uintptr_t spd_data_ptr = 0;
+		size_t spd_data_len = 0;
+		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;
+}