2 * Copyright 2013 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,
26 #include <linux/compiler.h>
27 #include <asm/fsl_law.h>
28 #include <asm/fsl_ddr_sdram.h>
29 #include <asm/global_data.h>
31 DECLARE_GLOBAL_DATA_PTR;
34 * Fixed sdram init -- doesn't use serial presence detect.
36 static void sdram_init(void)
38 ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC8xxx_DDR_ADDR;
40 __raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds);
41 __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config);
42 #if CONFIG_CHIP_SELECTS_PER_CTRL > 1
43 __raw_writel(CONFIG_SYS_DDR_CS1_BNDS, &ddr->cs1_bnds);
44 __raw_writel(CONFIG_SYS_DDR_CS1_CONFIG, &ddr->cs1_config);
46 __raw_writel(CONFIG_SYS_DDR_TIMING_3_800, &ddr->timing_cfg_3);
47 __raw_writel(CONFIG_SYS_DDR_TIMING_0_800, &ddr->timing_cfg_0);
48 __raw_writel(CONFIG_SYS_DDR_TIMING_1_800, &ddr->timing_cfg_1);
49 __raw_writel(CONFIG_SYS_DDR_TIMING_2_800, &ddr->timing_cfg_2);
51 __raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2);
52 __raw_writel(CONFIG_SYS_DDR_MODE_1_800, &ddr->sdram_mode);
53 __raw_writel(CONFIG_SYS_DDR_MODE_2_800, &ddr->sdram_mode_2);
55 __raw_writel(CONFIG_SYS_DDR_INTERVAL_800, &ddr->sdram_interval);
56 __raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init);
57 __raw_writel(CONFIG_SYS_DDR_CLK_CTRL_800, &ddr->sdram_clk_cntl);
59 __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL_800, &ddr->ddr_wrlvl_cntl);
60 __raw_writel(CONFIG_SYS_DDR_TIMING_4, &ddr->timing_cfg_4);
61 __raw_writel(CONFIG_SYS_DDR_TIMING_5, &ddr->timing_cfg_5);
62 __raw_writel(CONFIG_SYS_DDR_ZQ_CONTROL, &ddr->ddr_zq_cntl);
64 /* Set, but do not enable the memory */
65 __raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN, &ddr->sdram_cfg);
67 asm volatile("sync;isync");
70 /* Let the controller go */
71 out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN);
73 set_next_law(CONFIG_SYS_NAND_DDR_LAW, LAW_SIZE_1G, LAW_TRGT_IF_DDR_1);
76 void board_init_f(ulong bootflag)
79 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
81 /* initialize selected port with appropriate baud rate */
82 plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO;
84 gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio;
86 NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1,
87 gd->bus_clk / 16 / CONFIG_BAUDRATE);
89 puts("\nNAND boot... ");
91 /* Initialize the DDR3 */
94 /* copy code to RAM and jump to it - this should not return */
95 /* NOTE - code has to be copied out of NAND buffer before
96 * other blocks can be read.
98 relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE);
101 void board_init_r(gd_t *gd, ulong dest_addr)
109 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r');
111 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c);
114 void puts(const char *str)