diff options
| author | Kyle Moffett <Kyle.D.Moffett@boeing.com> | 2011-12-07 16:39:16 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-12-09 08:40:12 -0600 |
| commit | f8bbb4dad0e9d91b7a51d6cc54dcf66d142f50fe (patch) | |
| tree | 80d720d41d7fd62dfa52c480d05378c6ca4d3c71 /board/exmeritus/hww1u1a/ddr.c | |
| parent | c4eba6ec5c58083b38340724c006294c7a4fe2eb (diff) | |
| download | u-boot-f8bbb4dad0e9d91b7a51d6cc54dcf66d142f50fe.tar.gz | |
mpc85xx: Add board support for the eXMeritus HWW-1U-1A devices
The eXMeritus HWW-1U-1A unit is a DO-160-certified 13lb 1U chassis
with 3 independent TEMPEST zones. Two independent P2020 computers may
be found inside each zone. Complete hardware support is included.
High-level hardware overview:
* DO-160 certified for passenger aircraft (noncritical)
* TEMPEST ceritified for RED/BLACK separation
* 3 zones per chassis, 2 computers per zone (total of 6)
* Dual-core 1.066GHz P2020 per computer
* One 2GB DDR2 SO-RDIMM module per computer (upgradable to 4GB)
* Removable 80GB or 160GB Intel X18-M SSD per computer
* Front-accessible dual-port E1000E per computer
* Front-accessible serial console per computer
* Front-accessible USB port per computer
* Internal Gigabit crossover within each TEMPEST zone
* Internal unidirectional fiber links across TEMPEST zones
* Battery-backed DS1339 I2C RTC on each CPU.
Combined, each 13lb 1U chassis contains 12GB RAM, 12 cores @ 1.066GHz,
12 front-accessible Gigabit Ethernet ports and 960GB of solid-state
storage with a total power consumption of ~200W.
Additional notes:
* SPD detection is only known to work with the DO-160-certified DIMMs
* CPU reset is a little quirky due to hardware misfeature. Proper
support for the hardware reset mechanism has been left for a later
patch series to address.
Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Andy Fleming <afleming@gmail.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board/exmeritus/hww1u1a/ddr.c')
| -rw-r--r-- | board/exmeritus/hww1u1a/ddr.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/board/exmeritus/hww1u1a/ddr.c b/board/exmeritus/hww1u1a/ddr.c new file mode 100644 index 0000000000..36d02ad5d8 --- /dev/null +++ b/board/exmeritus/hww1u1a/ddr.c @@ -0,0 +1,34 @@ +/* + * Copyright 2009-2010 eXMeritus, A Boeing Company + * Copyright 2008-2009 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + */ + +#include <common.h> + +#include <asm/fsl_ddr_sdram.h> +#include <asm/fsl_ddr_dimm_params.h> + +void fsl_ddr_board_options(memctl_options_t *popts, + dimm_params_t *pdimm, + unsigned int ctrl_num) +{ + /* + * We only support one DIMM, so according to the P2020 docs we should + * set the options as follows: + */ + popts->cs_local_opts[0].odt_rd_cfg = 0; + popts->cs_local_opts[0].odt_wr_cfg = 4; + popts->cs_local_opts[1].odt_rd_cfg = 0; + popts->cs_local_opts[1].odt_wr_cfg = 0; + popts->half_strength_driver_enable = 0; + + /* Manually configured for our static clock rate */ + popts->clk_adjust = 4; + popts->cpo_override = 4; + popts->write_data_delay = 2; + popts->twoT_en = 0; +} |