mb/purism/librem_cnl: move setting of FSP-M UPDs into variant.c

The upcoming Librem 14 variant won't use the same SATA HSIO adjustments
as the Librem Mini, so move these settings into a variant-specific file.

Rename existing gpio.h to variant.h, move to board root directory, and
use for all variant-specific declarations; adjust references as needed.

Add newly-created variant.c to Makefile.

Test: build/boot Librem Mini, verify SATA functionality unchanged.

Change-Id: Ie8f714cc759675c692ad6e3f20e50adad8d09d4b
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48519
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c b/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c
new file mode 100644
index 0000000000..9d7e27fd3e
--- /dev/null
+++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/variant.c
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include "../../variant.h"
+
+void variant_memory_init_params(FSP_M_CONFIG *mem_cfg)
+{
+	/* Enable and set SATA HSIO adjustments for ports 0 and 2 */
+	mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[0] = 1;
+	mem_cfg->PchSataHsioRxGen3EqBoostMagEnable[2] = 1;
+	mem_cfg->PchSataHsioRxGen3EqBoostMag[0] = 2;
+	mem_cfg->PchSataHsioRxGen3EqBoostMag[2] = 1;
+}