1 /* 2 * (C) Copyright 2000-2003 3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 4 * 5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. 6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27 #include <common.h> 28 #include <pci.h> 29 #include <asm/immap.h> 30 31 DECLARE_GLOBAL_DATA_PTR; 32 33 int checkboard(void) 34 { 35 puts("Board: "); 36 puts("Freescale M54455 EVB\n"); 37 return 0; 38 }; 39 40 phys_size_t initdram(int board_type) 41 { 42 volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM); 43 volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO); 44 u32 dramsize, i; 45 46 dramsize = CFG_SDRAM_SIZE * 0x100000 >> 1; 47 48 for (i = 0x13; i < 0x20; i++) { 49 if (dramsize == (1 << i)) 50 break; 51 } 52 i--; 53 54 gpio->mscr_sdram = 0xAA; 55 56 sdram->sdcs0 = (CFG_SDRAM_BASE | i); 57 sdram->sdcs1 = (CFG_SDRAM_BASE1 | i); 58 59 sdram->sdcfg1 = CFG_SDRAM_CFG1; 60 sdram->sdcfg2 = CFG_SDRAM_CFG2; 61 62 /* Issue PALL */ 63 sdram->sdcr = CFG_SDRAM_CTRL | 2; 64 65 /* Issue LEMR */ 66 sdram->sdmr = CFG_SDRAM_EMOD | 0x408; 67 sdram->sdmr = CFG_SDRAM_MODE | 0x300; 68 69 udelay(500); 70 71 /* Issue PALL */ 72 sdram->sdcr = CFG_SDRAM_CTRL | 2; 73 74 /* Perform two refresh cycles */ 75 sdram->sdcr = CFG_SDRAM_CTRL | 4; 76 sdram->sdcr = CFG_SDRAM_CTRL | 4; 77 78 sdram->sdmr = CFG_SDRAM_MODE | 0x200; 79 80 sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000c00; 81 82 udelay(100); 83 84 return (dramsize << 1); 85 }; 86 87 int testdram(void) 88 { 89 /* TODO: XXX XXX XXX */ 90 printf("DRAM test not implemented!\n"); 91 92 return (0); 93 } 94 95 #if defined(CONFIG_CMD_IDE) 96 #include <ata.h> 97 98 int ide_preinit(void) 99 { 100 volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; 101 102 gpio->par_fec |= (gpio->par_fec & GPIO_PAR_FEC_FEC1_MASK) | 0x10; 103 gpio->par_feci2c |= 104 (gpio->par_feci2c & 0xF0FF) | (GPIO_PAR_FECI2C_MDC1_ATA_DIOR | 105 GPIO_PAR_FECI2C_MDIO1_ATA_DIOW); 106 gpio->par_ata |= 107 (GPIO_PAR_ATA_BUFEN | GPIO_PAR_ATA_CS1 | GPIO_PAR_ATA_CS0 | 108 GPIO_PAR_ATA_DA2 | GPIO_PAR_ATA_DA1 | GPIO_PAR_ATA_DA0 109 | GPIO_PAR_ATA_RESET_RESET | GPIO_PAR_ATA_DMARQ_DMARQ | 110 GPIO_PAR_ATA_IORDY_IORDY); 111 gpio->par_pci |= 112 (GPIO_PAR_PCI_GNT3_ATA_DMACK | GPIO_PAR_PCI_REQ3_ATA_INTRQ); 113 114 return (0); 115 } 116 117 void ide_set_reset(int idereset) 118 { 119 volatile atac_t *ata = (atac_t *) MMAP_ATA; 120 long period; 121 /* t1, t2, t3, t4, t5, t6, t9, tRD, tA */ 122 int piotms[5][9] = { 123 {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */ 124 {50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */ 125 {30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */ 126 {30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */ 127 {25, 70, 20, 10, 20, 5, 10, 0, 35} 128 }; /* PIO 4 */ 129 130 if (idereset) { 131 ata->cr = 0; /* control reset */ 132 udelay(10000); 133 } else { 134 #define CALC_TIMING(t) (t + period - 1) / period 135 period = 1000000000 / gd->bus_clk; /* period in ns */ 136 137 /*ata->ton = CALC_TIMING (180); */ 138 ata->t1 = CALC_TIMING(piotms[2][0]); 139 ata->t2w = CALC_TIMING(piotms[2][1]); 140 ata->t2r = CALC_TIMING(piotms[2][1]); 141 ata->ta = CALC_TIMING(piotms[2][8]); 142 ata->trd = CALC_TIMING(piotms[2][7]); 143 ata->t4 = CALC_TIMING(piotms[2][3]); 144 ata->t9 = CALC_TIMING(piotms[2][6]); 145 146 ata->cr = 0x40; /* IORDY enable */ 147 udelay(200000); 148 ata->cr |= 0x01; /* IORDY enable */ 149 } 150 } 151 #endif 152 153 #if defined(CONFIG_PCI) 154 /* 155 * Initialize PCI devices, report devices found. 156 */ 157 static struct pci_controller hose; 158 extern void pci_mcf5445x_init(struct pci_controller *hose); 159 160 void pci_init_board(void) 161 { 162 pci_mcf5445x_init(&hose); 163 } 164 #endif /* CONFIG_PCI */ 165