mb/google/poppy: Add support for DDR4 memory

This change updates memory SPD handling code in baseboard poppy to
allow variants to define either LPDDR3 or DDR4 memory types. In
addition to that, it also updates the function to print SPD info
considering offsets that might be different across the two memory
types.

BUG=b:70188937

Change-Id: Iefad01719c62264fb0d7e987904e77647d6026c2
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22745
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

2 files changed, 8 insertions, 0 deletions

diff --git a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h
index 62389afaae..c88b99a7bd 100644
--- a/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/poppy/variants/baseboard/include/baseboard/variants.h
@@ -29,7 +29,14 @@ const struct pad_config *variant_early_gpio_table(size_t *num);
 
 const struct cros_gpio *variant_cros_gpios(size_t *num);
 
+enum memory_type {
+	MEMORY_LPDDR3,
+	MEMORY_DDR4,
+	MEMORY_COUNT,
+};
+
 struct memory_params {
+	enum memory_type type;
 	const void *dq_map;
 	size_t dq_map_size;
 	const void *dqs_map;
diff --git a/src/mainboard/google/poppy/variants/baseboard/memory.c b/src/mainboard/google/poppy/variants/baseboard/memory.c
index d3f1286716..8134f1a36e 100644
--- a/src/mainboard/google/poppy/variants/baseboard/memory.c
+++ b/src/mainboard/google/poppy/variants/baseboard/memory.c
@@ -39,6 +39,7 @@ static const u16 rcomp_target[] = { 100, 40, 40, 23, 40 };
 
 void __attribute__((weak)) variant_memory_params(struct memory_params *p)
 {
+	p->type = MEMORY_LPDDR3;
 	p->dq_map = dq_map;
 	p->dq_map_size = sizeof(dq_map);
 	p->dqs_map = dqs_map;