2 * Copyright 2011 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 as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
27 #include <asm/immap_85xx.h>
28 #include <asm/fsl_ddr_sdram.h>
29 #include <asm/fsl_law.h>
30 #include <asm/global_data.h>
32 DECLARE_GLOBAL_DATA_PTR;
34 unsigned long ddr_freq_mhz;
38 ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC85xx_DDR_ADDR;
40 u32 svr = SVR_SOC_VER(mfspr(SPRN_SVR));
42 out_be32(&ddr->sdram_cfg, CONFIG_SYS_DDR_CONTROL | SDRAM_CFG_32_BE);
43 out_be32(&ddr->cs0_bnds, CONFIG_SYS_DDR_CS0_BNDS);
44 out_be32(&ddr->cs0_config, CONFIG_SYS_DDR_CS0_CONFIG);
45 out_be32(&ddr->sdram_cfg_2, CONFIG_SYS_DDR_CONTROL_2);
46 out_be32(&ddr->sdram_data_init, CONFIG_SYS_DDR_DATA_INIT);
48 if (ddr_freq_mhz < 700) {
49 out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3_667);
50 out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0_667);
51 out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_667);
52 out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_667);
53 out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_667);
54 out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_667);
55 out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_667);
56 out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL_667);
57 out_be32(&ddr->ddr_wrlvl_cntl,
58 CONFIG_SYS_DDR_WRLVL_CONTROL_667);
60 out_be32(&ddr->timing_cfg_3, CONFIG_SYS_DDR_TIMING_3_800);
61 out_be32(&ddr->timing_cfg_0, CONFIG_SYS_DDR_TIMING_0_800);
62 out_be32(&ddr->timing_cfg_1, CONFIG_SYS_DDR_TIMING_1_800);
63 out_be32(&ddr->timing_cfg_2, CONFIG_SYS_DDR_TIMING_2_800);
64 out_be32(&ddr->sdram_mode, CONFIG_SYS_DDR_MODE_1_800);
65 out_be32(&ddr->sdram_mode_2, CONFIG_SYS_DDR_MODE_2_800);
66 out_be32(&ddr->sdram_interval, CONFIG_SYS_DDR_INTERVAL_800);
67 out_be32(&ddr->sdram_clk_cntl, CONFIG_SYS_DDR_CLK_CTRL_800);
68 out_be32(&ddr->ddr_wrlvl_cntl,
69 CONFIG_SYS_DDR_WRLVL_CONTROL_800);
72 out_be32(&ddr->timing_cfg_4, CONFIG_SYS_DDR_TIMING_4);
73 out_be32(&ddr->timing_cfg_5, CONFIG_SYS_DDR_TIMING_5);
74 out_be32(&ddr->ddr_zq_cntl, CONFIG_SYS_DDR_ZQ_CONTROL);
76 /* P1014 and it's derivatives support max 16bit DDR width */
77 if (svr == SVR_P1014) {
78 __raw_writel(ddr->sdram_cfg & ~SDRAM_CFG_DBW_MASK, &ddr->sdram_cfg);
79 __raw_writel(ddr->sdram_cfg | SDRAM_CFG_16_BE, &ddr->sdram_cfg);
80 /* For CS0_BNDS we divide the start and end address by 2, so we can just
81 * shift the entire register to achieve the desired result and the mask
82 * the value so we don't write reserved fields */
83 __raw_writel((CONFIG_SYS_DDR_CS0_BNDS >> 1) & 0x0fff0fff, &ddr->cs0_bnds);
88 /* Let the controller go */
89 out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
91 set_next_law(CONFIG_SYS_NAND_DDR_LAW, LAW_SIZE_1G, LAW_TRGT_IF_DDR_1);
94 void board_init_f(ulong bootflag)
96 u32 plat_ratio, ddr_ratio;
97 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
99 /* initialize selected port with appropriate baud rate */
100 plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
102 gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
104 ddr_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_DDR_RATIO;
105 ddr_ratio = ddr_ratio >> MPC85xx_PORPLLSR_DDR_RATIO_SHIFT;
106 ddr_freq_mhz = (CONFIG_SYS_CLK_FREQ * ddr_ratio) / 0x1000000;
108 NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
109 gd->bus_clk / 16 / CONFIG_BAUDRATE);
111 puts("\nNAND boot... ");
113 /* Initialize the DDR3 */
116 /* copy code to RAM and jump to it - this should not return */
117 /* NOTE - code has to be copied out of NAND buffer before
118 * other blocks can be read.
120 relocate_code(CONFIG_SYS_NAND_U_BOOT_RELOC_SP, 0,
121 CONFIG_SYS_NAND_U_BOOT_RELOC);
124 void board_init_r(gd_t *gd, ulong dest_addr)
132 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
134 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
137 void puts(const char *str)