1 /* 2 * Copyright 2011 Freescale Semiconductor, Inc. 3 * 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. 8 * 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 12 * 13 * GNU General Public License for more details. 14 * 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, 18 * MA 02111-1307 USA 19 * 20 */ 21 22 #include <common.h> 23 #include <ns16550.h> 24 #include <asm/io.h> 25 #include <nand.h> 26 #include <linux/compiler.h> 27 #include <asm/fsl_law.h> 28 #include <asm/fsl_ddr_sdram.h> 29 #include <asm/global_data.h> 30 31 DECLARE_GLOBAL_DATA_PTR; 32 33 #ifndef CONFIG_SYS_INIT_L2_ADDR 34 /* 35 * Fixed sdram init -- doesn't use serial presence detect. 36 */ 37 static void sdram_init(void) 38 { 39 ccsr_ddr_t *ddr = (ccsr_ddr_t *)CONFIG_SYS_MPC8xxx_DDR_ADDR; 40 41 __raw_writel(CONFIG_SYS_DDR_CS0_BNDS, &ddr->cs0_bnds); 42 __raw_writel(CONFIG_SYS_DDR_CS0_CONFIG, &ddr->cs0_config); 43 #if CONFIG_CHIP_SELECTS_PER_CTRL > 1 44 __raw_writel(CONFIG_SYS_DDR_CS1_BNDS, &ddr->cs1_bnds); 45 __raw_writel(CONFIG_SYS_DDR_CS1_CONFIG, &ddr->cs1_config); 46 #endif 47 __raw_writel(CONFIG_SYS_DDR_TIMING_3, &ddr->timing_cfg_3); 48 __raw_writel(CONFIG_SYS_DDR_TIMING_0, &ddr->timing_cfg_0); 49 __raw_writel(CONFIG_SYS_DDR_TIMING_1, &ddr->timing_cfg_1); 50 __raw_writel(CONFIG_SYS_DDR_TIMING_2, &ddr->timing_cfg_2); 51 52 __raw_writel(CONFIG_SYS_DDR_CONTROL_2, &ddr->sdram_cfg_2); 53 __raw_writel(CONFIG_SYS_DDR_MODE_1, &ddr->sdram_mode); 54 __raw_writel(CONFIG_SYS_DDR_MODE_2, &ddr->sdram_mode_2); 55 56 __raw_writel(CONFIG_SYS_DDR_INTERVAL, &ddr->sdram_interval); 57 __raw_writel(CONFIG_SYS_DDR_DATA_INIT, &ddr->sdram_data_init); 58 __raw_writel(CONFIG_SYS_DDR_CLK_CTRL, &ddr->sdram_clk_cntl); 59 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); 63 __raw_writel(CONFIG_SYS_DDR_WRLVL_CONTROL, &ddr->ddr_wrlvl_cntl); 64 65 /* Set, but do not enable the memory */ 66 __raw_writel(CONFIG_SYS_DDR_CONTROL & ~SDRAM_CFG_MEM_EN, &ddr->sdram_cfg); 67 68 asm volatile("sync;isync"); 69 udelay(500); 70 71 /* Let the controller go */ 72 out_be32(&ddr->sdram_cfg, in_be32(&ddr->sdram_cfg) | SDRAM_CFG_MEM_EN); 73 74 set_next_law(0, CONFIG_SYS_SDRAM_SIZE_LAW, LAW_TRGT_IF_DDR_1); 75 } 76 #endif 77 78 void board_init_f(ulong bootflag) 79 { 80 u32 plat_ratio; 81 ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR; 82 #ifndef CONFIG_QE 83 ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR); 84 #endif 85 86 /* initialize selected port with appropriate baud rate */ 87 plat_ratio = in_be32(&gur->porpllsr) & MPC85xx_PORPLLSR_PLAT_RATIO; 88 plat_ratio >>= 1; 89 gd->bus_clk = CONFIG_SYS_CLK_FREQ * plat_ratio; 90 91 NS16550_init((NS16550_t)CONFIG_SYS_NS16550_COM1, 92 gd->bus_clk / 16 / CONFIG_BAUDRATE); 93 94 puts("\nNAND boot... "); 95 96 #ifndef CONFIG_QE 97 /* init DDR3 reset signal */ 98 __raw_writel(0x02000000, &pgpio->gpdir); 99 __raw_writel(0x00200000, &pgpio->gpodr); 100 __raw_writel(0x00000000, &pgpio->gpdat); 101 udelay(1000); 102 __raw_writel(0x00200000, &pgpio->gpdat); 103 udelay(1000); 104 __raw_writel(0x00000000, &pgpio->gpdir); 105 #endif 106 107 #ifndef CONFIG_SYS_INIT_L2_ADDR 108 /* Initialize the DDR3 */ 109 sdram_init(); 110 #endif 111 112 /* copy code to RAM and jump to it - this should not return */ 113 /* NOTE - code has to be copied out of NAND buffer before 114 * other blocks can be read. 115 */ 116 relocate_code(CONFIG_SPL_RELOC_STACK, 0, CONFIG_SPL_RELOC_TEXT_BASE); 117 } 118 119 void board_init_r(gd_t *gd, ulong dest_addr) 120 { 121 nand_boot(); 122 } 123 124 void putc(char c) 125 { 126 if (c == '\n') 127 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, '\r'); 128 129 NS16550_putc((NS16550_t)CONFIG_SYS_NS16550_COM1, c); 130 } 131 132 void puts(const char *str) 133 { 134 while (*str) 135 putc(*str++); 136 } 137