mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 00:48:52 +09:00
![Kyle Moffett](/assets/img/avatar_default.png)
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>
35 lines
973 B
C
35 lines
973 B
C
/*
|
|
* 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;
|
|
}
|