diff options
Diffstat (limited to 'board/freescale/m54455evb/m54455evb.c')
| -rw-r--r-- | board/freescale/m54455evb/m54455evb.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/board/freescale/m54455evb/m54455evb.c b/board/freescale/m54455evb/m54455evb.c new file mode 100644 index 0000000..6a02782 --- /dev/null +++ b/board/freescale/m54455evb/m54455evb.c @@ -0,0 +1,164 @@ +/* + * (C) Copyright 2000-2003 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. + * TsiChung Liew (Tsi-Chung.Liew@freescale.com) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <pci.h> +#include <asm/immap.h> + +DECLARE_GLOBAL_DATA_PTR; + +int checkboard(void) +{ + puts("Board: "); + puts("Freescale M54455 EVB\n"); + return 0; +}; + +long int initdram(int board_type) +{ + volatile sdramc_t *sdram = (volatile sdramc_t *)(MMAP_SDRAM); + volatile gpio_t *gpio = (volatile gpio_t *)(MMAP_GPIO); + u32 dramsize, i; + + dramsize = CFG_SDRAM_SIZE * 0x100000 >> 1; + + for (i = 0x13; i < 0x20; i++) { + if (dramsize == (1 << i)) + break; + } + i--; + + gpio->mscr_sdram = 0xAA; + + sdram->sdcs0 = (CFG_SDRAM_BASE | i); + sdram->sdcs1 = (CFG_SDRAM_BASE1 | i); + + sdram->sdcfg1 = CFG_SDRAM_CFG1; + sdram->sdcfg2 = CFG_SDRAM_CFG2; + + /* Issue PALL */ + sdram->sdcr = CFG_SDRAM_CTRL | 2; + + /* Issue LEMR */ + sdram->sdmr = CFG_SDRAM_EMOD | 0x408; + sdram->sdmr = CFG_SDRAM_MODE | 0x300; + + udelay(500); + + /* Issue PALL */ + sdram->sdcr = CFG_SDRAM_CTRL | 2; + + /* Perform two refresh cycles */ + sdram->sdcr = CFG_SDRAM_CTRL | 4; + sdram->sdcr = CFG_SDRAM_CTRL | 4; + + sdram->sdmr = CFG_SDRAM_MODE | 0x200; + + sdram->sdcr = (CFG_SDRAM_CTRL & ~0x80000000) | 0x10000c00; + + udelay(100); + + return (dramsize << 1); +}; + +int testdram(void) +{ + /* TODO: XXX XXX XXX */ + printf("DRAM test not implemented!\n"); + + return (0); +} + +#if defined(CONFIG_CMD_IDE) +#include <ata.h> + +int ide_preinit(void) +{ + volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; + + gpio->par_fec |= (gpio->par_fec & GPIO_PAR_FEC_FEC1_MASK) | 0x10; + gpio->par_feci2c |= + (gpio->par_feci2c & 0xF0FF) | (GPIO_PAR_FECI2C_MDC1_ATA_DIOR | + GPIO_PAR_FECI2C_MDIO1_ATA_DIOW); + gpio->par_ata |= + (GPIO_PAR_ATA_BUFEN | GPIO_PAR_ATA_CS1 | GPIO_PAR_ATA_CS0 | + GPIO_PAR_ATA_DA2 | GPIO_PAR_ATA_DA1 | GPIO_PAR_ATA_DA0 + | GPIO_PAR_ATA_RESET_RESET | GPIO_PAR_ATA_DMARQ_DMARQ | + GPIO_PAR_ATA_IORDY_IORDY); + gpio->par_pci |= + (GPIO_PAR_PCI_GNT3_ATA_DMACK | GPIO_PAR_PCI_REQ3_ATA_INTRQ); + + return (0); +} + +void ide_set_reset(int idereset) +{ + volatile atac_t *ata = (atac_t *) MMAP_ATA; + long period; + /* t1, t2, t3, t4, t5, t6, t9, tRD, tA */ + int piotms[5][9] = { + {70, 165, 60, 30, 50, 5, 20, 0, 35}, /* PIO 0 */ + {50, 125, 45, 20, 35, 5, 15, 0, 35}, /* PIO 1 */ + {30, 100, 30, 15, 20, 5, 10, 0, 35}, /* PIO 2 */ + {30, 80, 30, 10, 20, 5, 10, 0, 35}, /* PIO 3 */ + {25, 70, 20, 10, 20, 5, 10, 0, 35} + }; /* PIO 4 */ + + if (idereset) { + ata->cr = 0; /* control reset */ + udelay(10000); + } else { +#define CALC_TIMING(t) (t + period - 1) / period + period = 1000000000 / gd->bus_clk; /* period in ns */ + + /*ata->ton = CALC_TIMING (180); */ + ata->t1 = CALC_TIMING(piotms[2][0]); + ata->t2w = CALC_TIMING(piotms[2][1]); + ata->t2r = CALC_TIMING(piotms[2][1]); + ata->ta = CALC_TIMING(piotms[2][8]); + ata->trd = CALC_TIMING(piotms[2][7]); + ata->t4 = CALC_TIMING(piotms[2][3]); + ata->t9 = CALC_TIMING(piotms[2][6]); + + ata->cr = 0x40; /* IORDY enable */ + udelay(200000); + ata->cr |= 0x01; /* IORDY enable */ + } +} +#endif + +#if defined(CONFIG_PCI) +/* + * Initialize PCI devices, report devices found. + */ +static struct pci_controller hose; +extern void pci_mcf5445x_init(struct pci_controller *hose); + +void pci_init_board(void) +{ + pci_mcf5445x_init(&hose); +} +#endif /* CONFIG_PCI */ |