diff options
Diffstat (limited to 'src/mainboard/google/poppy/variants/nocturne/memory.c')
-rw-r--r-- | src/mainboard/google/poppy/variants/nocturne/memory.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/mainboard/google/poppy/variants/nocturne/memory.c b/src/mainboard/google/poppy/variants/nocturne/memory.c new file mode 100644 index 0000000000..0b34e72830 --- /dev/null +++ b/src/mainboard/google/poppy/variants/nocturne/memory.c @@ -0,0 +1,49 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2018 Google LLC + * + * 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 <baseboard/variants.h> + +/* DQ byte map */ +static const u8 dq_map[][12] = { + { 0x0F, 0xF0, 0x00, 0xF0, 0x0F, 0xF0, + 0x0F, 0x00, 0xFF, 0x00, 0xFF, 0x00 }, + { 0x33, 0xCC, 0x00, 0xCC, 0x33, 0xCC, + 0x33, 0x00, 0xFF, 0x00, 0xFF, 0x00 } +}; + +/* DQS CPU<>DRAM map */ +static const u8 dqs_map[][8] = { + { 0, 1, 3, 2, 4, 5, 6, 7 }, + { 3, 2, 6, 7, 0, 1, 4, 5 }, +}; + +/* Rcomp resistor */ +static const u16 rcomp_resistor[] = { 200, 81, 162 }; + +/* Rcomp target */ +static const u16 rcomp_target[] = { 100, 40, 40, 23, 40 }; + +void 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; + p->dqs_map_size = sizeof(dqs_map); + p->rcomp_resistor = rcomp_resistor; + p->rcomp_resistor_size = sizeof(rcomp_resistor); + p->rcomp_target = rcomp_target; + p->rcomp_target_size = sizeof(rcomp_target); +} |