2 * Copyright 2008 Freescale Semiconductor, Inc.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * Version 2 as published by the Free Software Foundation.
11 #include <asm/fsl_ddr_sdram.h>
13 #if (CONFIG_CHIP_SELECTS_PER_CTRL > 4)
14 #error Invalid setting for CONFIG_CHIP_SELECTS_PER_CTRL
17 void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
18 unsigned int ctrl_num)
21 volatile ccsr_ddr_t *ddr = (void *)CONFIG_SYS_MPC85xx_DDR_ADDR;
24 printf("%s unexpected ctrl_num = %u\n", __FUNCTION__, ctrl_num);
28 for (i = 0; i < CONFIG_CHIP_SELECTS_PER_CTRL; i++) {
30 out_be32(&ddr->cs0_bnds, regs->cs[i].bnds);
31 out_be32(&ddr->cs0_config, regs->cs[i].config);
34 out_be32(&ddr->cs1_bnds, regs->cs[i].bnds);
35 out_be32(&ddr->cs1_config, regs->cs[i].config);
38 out_be32(&ddr->cs2_bnds, regs->cs[i].bnds);
39 out_be32(&ddr->cs2_config, regs->cs[i].config);
42 out_be32(&ddr->cs3_bnds, regs->cs[i].bnds);
43 out_be32(&ddr->cs3_config, regs->cs[i].config);
47 out_be32(&ddr->timing_cfg_1, regs->timing_cfg_1);
48 out_be32(&ddr->timing_cfg_2, regs->timing_cfg_2);
49 out_be32(&ddr->sdram_mode, regs->ddr_sdram_mode);
50 out_be32(&ddr->sdram_interval, regs->ddr_sdram_interval);
51 #if defined(CONFIG_MPC8555) || defined(CONFIG_MPC8541)
52 out_be32(&ddr->sdram_clk_cntl, regs->ddr_sdram_clk_cntl);
56 * 200 painful micro-seconds must elapse between
57 * the DDR clock setup and the DDR config enable.
60 asm volatile("sync;isync");
62 out_be32(&ddr->sdram_cfg, regs->ddr_sdram_cfg);
64 asm("sync;isync;msync");
68 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
70 * Initialize all of memory for ECC, then enable errors.
74 ddr_enable_ecc(unsigned int dram_size)
78 volatile ccsr_ddr_t *ddr= (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
80 for (*p = 0; p < (uint *)(8 * 1024); p++) {
81 if (((unsigned int)p & 0x1f) == 0) {
82 ppcDcbz((unsigned long) p);
84 *p = (unsigned int)CONFIG_MEM_INIT_VALUE;
85 if (((unsigned int)p & 0x1c) == 0x1c) {
86 ppcDcbf((unsigned long) p);
90 dmacpy(0x002000, 0, 0x2000); /* 8K */
91 dmacpy(0x004000, 0, 0x4000); /* 16K */
92 dmacpy(0x008000, 0, 0x8000); /* 32K */
93 dmacpy(0x010000, 0, 0x10000); /* 64K */
94 dmacpy(0x020000, 0, 0x20000); /* 128K */
95 dmacpy(0x040000, 0, 0x40000); /* 256K */
96 dmacpy(0x080000, 0, 0x80000); /* 512K */
97 dmacpy(0x100000, 0, 0x100000); /* 1M */
98 dmacpy(0x200000, 0, 0x200000); /* 2M */
99 dmacpy(0x400000, 0, 0x400000); /* 4M */
101 for (i = 1; i < dram_size / 0x800000; i++)
102 dmacpy(0x800000 *i, 0, 0x800000);
105 * Enable errors for ECC.
107 debug("DMA DDR: err_disable = 0x%08x\n", ddr->err_disable);
108 ddr->err_disable = 0x00000000;
109 asm("sync;isync;msync");
110 debug("DMA DDR: err_disable = 0x%08x\n", ddr->err_disable);
113 #endif /* CONFIG_DDR_ECC && ! CONFIG_ECC_INIT_VIA_DDRCONTROLLER */