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| author | Christian Mauderer <Christian.Mauderer@embedded-brains.de> | 2016-08-19 11:59:12 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2016-09-07 13:38:53 +0200 |
| commit | beb289eb5ba0c1f0617ddf9b40ed5b4b705c045c (patch) | |
| tree | 67f46f76ae3a057b5cbfe9374d8ce3cf81b04e01 /c/src/lib/libbsp/arm/atsam/startup/sdram-config.c | |
| parent | score: Remove superfluous SMP debug support (diff) | |
| download | rtems-beb289eb5ba0c1f0617ddf9b40ed5b4b705c045c.tar.bz2 | |
bsp/atsam: Move ram init values to structure.
Diffstat (limited to '')
| -rw-r--r-- | c/src/lib/libbsp/arm/atsam/startup/sdram-config.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c b/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c new file mode 100644 index 0000000000..65060a73f7 --- /dev/null +++ b/c/src/lib/libbsp/arm/atsam/startup/sdram-config.c @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2016 embedded brains GmbH. All rights reserved. + * + * embedded brains GmbH + * Dornierstr. 4 + * 82178 Puchheim + * Germany + * <rtems@embedded-brains.de> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#include <chip.h> +#include <include/board_memories.h> + +const struct BOARD_Sdram_Config BOARD_Sdram_Config = { + .sdramc_tr = 1562, + .sdramc_cr = + SDRAMC_CR_NC_COL8 /* 8 column bits */ + | SDRAMC_CR_NR_ROW11 /* 12 row bits (4K) */ + | SDRAMC_CR_CAS_LATENCY3 /* CAS Latency 3 */ + | SDRAMC_CR_NB_BANK2 /* 2 banks */ + | SDRAMC_CR_DBW /* 16 bit */ + | SDRAMC_CR_TWR(5) + | SDRAMC_CR_TRC_TRFC(13) /* 63ns min */ + | SDRAMC_CR_TRP(5) /* Command period (PRE to ACT) 21 ns min */ + | SDRAMC_CR_TRCD(5) /* Active Command to R/W Cmd delay time 21ns min */ + | SDRAMC_CR_TRAS(9) /* Command period (ACT to PRE) 42ns min */ + | SDRAMC_CR_TXSR(15U), /* Exit self-refresh to active time 70ns Min */ + .sdramc_mdr = SDRAMC_MDR_MD_SDRAM, + .sdramc_cfr1 = SDRAMC_CFR1_UNAL_SUPPORTED | SDRAMC_CFR1_TMRD(2) +}; |