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https://github.com/AsahiLinux/u-boot
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9a17eb5b7e
Fix ccsr_ddr structure to avoid using typedef. Combine DDR2 and DDR3 structure for 83xx, 85xx and 86xx. Signed-off-by: York Sun <yorksun@freescale.com>
96 lines
2.8 KiB
C
96 lines
2.8 KiB
C
/*
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* Copyright 2008-2011 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 <asm/io.h>
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#include <asm/processor.h>
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#include <fsl_ddr_sdram.h>
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#if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
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#error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
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#endif
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void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
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unsigned int ctrl_num, int step)
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{
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unsigned int i;
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struct ccsr_ddr __iomem *ddr =
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(struct ccsr_ddr __iomem *)CONFIG_SYS_FSL_DDR_ADDR;
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#if defined(CONFIG_SYS_FSL_ERRATUM_NMG_DDR120) && defined(CONFIG_MPC85xx)
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ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
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uint svr;
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#endif
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if (ctrl_num) {
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printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
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return;
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}
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#ifdef CONFIG_SYS_FSL_ERRATUM_NMG_DDR120
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/*
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* Set the DDR IO receiver to an acceptable bias point.
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* Fixed in Rev 2.1.
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*/
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svr = get_svr();
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if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0)) {
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if ((regs->ddr_sdram_cfg & SDRAM_CFG_SDRAM_TYPE_MASK) ==
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SDRAM_CFG_SDRAM_TYPE_DDR2)
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out_be32(&gur->ddrioovcr, 0x90000000);
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else
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out_be32(&gur->ddrioovcr, 0xA8000000);
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}
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#endif
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for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
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if (i == 0) {
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out_be32(&ddr->cs0_bnds, regs->cs[i].bnds);
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out_be32(&ddr->cs0_config, regs->cs[i].config);
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} else if (i == 1) {
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out_be32(&ddr->cs1_bnds, regs->cs[i].bnds);
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out_be32(&ddr->cs1_config, regs->cs[i].config);
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} else if (i == 2) {
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out_be32(&ddr->cs2_bnds, regs->cs[i].bnds);
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out_be32(&ddr->cs2_config, regs->cs[i].config);
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} else if (i == 3) {
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out_be32(&ddr->cs3_bnds, regs->cs[i].bnds);
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out_be32(&ddr->cs3_config, regs->cs[i].config);
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}
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}
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out_be32(&ddr->timing_cfg_3, regs->timing_cfg_3);
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out_be32(&ddr->timing_cfg_0, regs->timing_cfg_0);
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out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1);
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out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
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out_be32(&ddr->sdram_cfg_2, regs->ddr_sdram_cfg_2);
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out_be32(&ddr->sdram_mode, regs->ddr_sdram_mode);
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out_be32(&ddr->sdram_mode_2, regs->ddr_sdram_mode_2);
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out_be32(&ddr->sdram_md_cntl, regs->ddr_sdram_md_cntl);
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out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
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out_be32(&ddr->sdram_data_init, regs->ddr_data_init);
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out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
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out_be32(&ddr->init_addr, regs->ddr_init_addr);
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out_be32(&ddr->init_ext_addr, regs->ddr_init_ext_addr);
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/*
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* 200 painful micro-seconds must elapse between
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* the DDR clock setup and the DDR config enable.
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*/
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udelay(200);
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asm volatile("sync;isync");
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out_be32(&ddr->sdram_cfg, regs->ddr_sdram_cfg);
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/* Poll DDR_SDRAM_CFG_2[D_INIT] bit until auto-data init is done. */
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while (in_be32(&ddr->sdram_cfg_2) & 0x10) {
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udelay(10000); /* throttle polling rate */
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}
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}
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