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https://github.com/brain-hackers/u-boot-brain
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c00ac259f6
Some U-Boot images for X-ES boards support multiple products in the same family. For example, the XPedite5370, XPedite5371, and XPedite5372 are similar enough that one U-Boot image can work on all 3 cards. To make it clear that a U-Boot image can work on boards of the same family, rename the boards with the least significant digit of 'x'. While we're at it, change the board config file and make targets to be lowercase. Also change the default uImage and fdt filenames to "board.uImage" and "board.dtb" to be more generic. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*
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* Copyright 2008 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* Version 2 as published by the Free Software Foundation.
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*/
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#include <common.h>
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#include <i2c.h>
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#include <asm/fsl_ddr_sdram.h>
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#include <asm/fsl_ddr_dimm_params.h>
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static void
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get_spd(ddr2_spd_eeprom_t *spd, unsigned char i2c_address)
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{
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i2c_read(i2c_address, 0, 1, (uchar *)spd, sizeof(ddr2_spd_eeprom_t));
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/* We use soldered memory, but use an SPD EEPROM to describe it.
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* The SPD has an unspecified dimm type, but the DDR2 initialization
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* code requires a specific type to be specified. This sets the type
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* as a standard unregistered SO-DIMM. */
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if (spd->dimm_type == 0) {
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spd->dimm_type = 0x4;
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((uchar *)spd)[63] += 0x4;
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}
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}
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unsigned int fsl_ddr_get_mem_data_rate(void)
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{
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return get_ddr_freq(0);
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}
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void fsl_ddr_get_spd(ddr2_spd_eeprom_t *ctrl_dimms_spd,
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unsigned int ctrl_num)
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{
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unsigned int i;
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if (ctrl_num) {
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printf("%s: invalid ctrl_num = %d\n", __func__, ctrl_num);
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return;
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}
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for (i = 0; i < CONFIG_DIMM_SLOTS_PER_CTLR; i++)
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get_spd(&(ctrl_dimms_spd[i]), SPD_EEPROM_ADDRESS);
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}
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void fsl_ddr_board_options(memctl_options_t *popts,
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dimm_params_t *pdimm,
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unsigned int ctrl_num)
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{
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/*
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* Factors to consider for clock adjust:
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* - number of chips on bus
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* - position of slot
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* - DDR1 vs. DDR2?
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* - ???
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*
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* This needs to be determined on a board-by-board basis.
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* 0110 3/4 cycle late
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* 0111 7/8 cycle late
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*/
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popts->clk_adjust = 7;
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/*
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* Factors to consider for CPO:
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* - frequency
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* - ddr1 vs. ddr2
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*/
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popts->cpo_override = 9;
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/*
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* Factors to consider for write data delay:
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* - number of DIMMs
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*
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* 1 = 1/4 clock delay
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* 2 = 1/2 clock delay
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* 3 = 3/4 clock delay
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* 4 = 1 clock delay
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* 5 = 5/4 clock delay
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* 6 = 3/2 clock delay
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*/
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popts->write_data_delay = 3;
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/*
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* Factors to consider for half-strength driver enable:
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* - number of DIMMs installed
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*/
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popts->half_strength_driver_enable = 0;
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}
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