/* * (C) Copyright 2000, 2001 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * Ulrich Lutz, Speech Design GmbH, ulutz@datalab.de. * * 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 <mpc8xx.h> #include <commproc.h> #ifdef CONFIG_STATUS_LED # include <status_led.h> #endif /* ------------------------------------------------------------------------- */ static long int dram_size (long int, long int *, long int); /* ------------------------------------------------------------------------- */ #define _NOT_USED_ 0xFFFFFFFF /* * 50 MHz SHARC access using UPM A */ const uint sharc_table[] = { /* * Single Read. (Offset 0 in UPM RAM) */ 0x0FF3FC04, 0x0FF3EC00, 0x7FFFEC04, 0xFFFFEC04, 0xFFFFEC05, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Burst Read. (Offset 8 in UPM RAM) */ /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Single Write. (Offset 18 in UPM RAM) */ 0x0FAFFC04, 0x0FAFEC00, 0x7FFFEC04, 0xFFFFEC04, 0xFFFFEC05, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Burst Write. (Offset 20 in UPM RAM) */ /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Refresh (Offset 30 in UPM RAM) */ /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Exception. (Offset 3c in UPM RAM) */ 0x7FFFFC07, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, }; /* * 50 MHz SDRAM access using UPM B */ const uint sdram_table[] = { /* * Single Read. (Offset 0 in UPM RAM) */ 0x0E26FC04, 0x11ADFC04, 0xEFBBBC00, 0x1FF77C45, /* last */ _NOT_USED_, /* * SDRAM Initialization (offset 5 in UPM RAM) * * This is no UPM entry point. The following definition uses * the remaining space to establish an initialization * sequence, which is executed by a RUN command. * */ 0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* last */ /* * Burst Read. (Offset 8 in UPM RAM) */ 0x0E26FC04, 0x10ADFC04, 0xF0AFFC00, 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C45, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Single Write. (Offset 18 in UPM RAM) */ 0x1F27FC04, 0xEEAEBC04, 0x01B93C00, 0x1FF77C45, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Burst Write. (Offset 20 in UPM RAM) */ 0x0E26BC00, 0x10AD7C00, 0xF0AFFC00, 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C45, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Refresh (Offset 30 in UPM RAM) */ 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC84, 0xFFFFFC05, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Exception. (Offset 3c in UPM RAM) */ 0x7FFFFC07, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, }; /* ------------------------------------------------------------------------- */ /* * Check Board Identity: * */ int checkboard (void) { #ifdef CONFIG_IVMS8 puts ("Board: IVMS8\n"); #endif #ifdef CONFIG_IVML24 puts ("Board: IVM-L8/24\n"); #endif return (0); } /* ------------------------------------------------------------------------- */ long int initdram (int board_type) { volatile immap_t *immr = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immr->im_memctl; long int size_b0; /* enable SDRAM clock ("switch on" SDRAM) */ immr->im_cpm.cp_pbpar &= ~(CFG_PB_SDRAM_CLKE); /* GPIO */ immr->im_cpm.cp_pbodr &= ~(CFG_PB_SDRAM_CLKE); /* active output */ immr->im_cpm.cp_pbdir |= CFG_PB_SDRAM_CLKE; /* output */ immr->im_cpm.cp_pbdat |= CFG_PB_SDRAM_CLKE; /* assert SDRAM CLKE */ udelay (1); /* * Map controller bank 1 for ELIC SACCO */ memctl->memc_or1 = CFG_OR1; memctl->memc_br1 = CFG_BR1; /* * Map controller bank 2 for ELIC EPIC */ memctl->memc_or2 = CFG_OR2; memctl->memc_br2 = CFG_BR2; /* * Configure UPMA for SHARC */ upmconfig (UPMA, (uint *) sharc_table, sizeof (sharc_table) / sizeof (uint)); #if defined(CONFIG_IVML24) /* * Map controller bank 4 for HDLC Address space */ memctl->memc_or4 = CFG_OR4; memctl->memc_br4 = CFG_BR4; #endif /* * Map controller bank 5 for SHARC */ memctl->memc_or5 = CFG_OR5; memctl->memc_br5 = CFG_BR5; memctl->memc_mamr = 0x00001000; /* * Configure UPMB for SDRAM */ upmconfig (UPMB, (uint *) sdram_table, sizeof (sdram_table) / sizeof (uint)); memctl->memc_mptpr = CFG_MPTPR_1BK_8K; memctl->memc_mar = 0x00000088; /* * Map controller bank 3 to the SDRAM bank at preliminary address. */ memctl->memc_or3 = CFG_OR3_PRELIM; memctl->memc_br3 = CFG_BR3_PRELIM; memctl->memc_mbmr = CFG_MBMR_8COL; /* refresh not enabled yet */ udelay (200); memctl->memc_mcr = 0x80806105; /* precharge */ udelay (1); memctl->memc_mcr = 0x80806106; /* load mode register */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ udelay (1); memctl->memc_mcr = 0x80806130; /* autorefresh */ memctl->memc_mbmr |= MBMR_PTBE; /* refresh enabled */ /* * Check Bank 0 Memory Size for re-configuration */ size_b0 = dram_size (CFG_MBMR_8COL, (long *) SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE); memctl->memc_mbmr = CFG_MBMR_8COL | MBMR_PTBE; return (size_b0); } /* ------------------------------------------------------------------------- */ /* * Check memory range for valid RAM. A simple memory test determines * the actually available RAM size between addresses `base' and * `base + maxsize'. Some (not all) hardware errors are detected: * - short between address lines * - short between data lines */ static long int dram_size (long int mamr_value, long int *base, long int maxsize) { volatile immap_t *immr = (immap_t *) CFG_IMMR; volatile memctl8xx_t *memctl = &immr->im_memctl; memctl->memc_mbmr = mamr_value; return (get_ram_size (base, maxsize)); } /* ------------------------------------------------------------------------- */ void reset_phy (void) { immap_t *immr = (immap_t *) CFG_IMMR; /* De-assert Ethernet Powerdown */ immr->im_cpm.cp_pbpar &= ~(CFG_PB_ETH_POWERDOWN); /* GPIO */ immr->im_cpm.cp_pbodr &= ~(CFG_PB_ETH_POWERDOWN); /* active output */ immr->im_cpm.cp_pbdir |= CFG_PB_ETH_POWERDOWN; /* output */ immr->im_cpm.cp_pbdat &= ~(CFG_PB_ETH_POWERDOWN); /* Enable PHY power */ udelay (1000); /* * RESET is implemented by a positive pulse of at least 1 us * at the reset pin. * * Configure RESET pins for NS DP83843 PHY, and RESET chip. * * Note: The RESET pin is high active, but there is an * inverter on the SPD823TS board... */ immr->im_ioport.iop_pcpar &= ~(CFG_PC_ETH_RESET); immr->im_ioport.iop_pcdir |= CFG_PC_ETH_RESET; /* assert RESET signal of PHY */ immr->im_ioport.iop_pcdat &= ~(CFG_PC_ETH_RESET); udelay (10); /* de-assert RESET signal of PHY */ immr->im_ioport.iop_pcdat |= CFG_PC_ETH_RESET; udelay (10); } /* ------------------------------------------------------------------------- */ void show_boot_progress (int status) { #if defined(CONFIG_STATUS_LED) # if defined(STATUS_LED_YELLOW) status_led_set (STATUS_LED_YELLOW, (status < 0) ? STATUS_LED_ON : STATUS_LED_OFF); # endif /* STATUS_LED_YELLOW */ # if defined(STATUS_LED_BOOT) if (status == 6) status_led_set (STATUS_LED_BOOT, STATUS_LED_OFF); # endif /* STATUS_LED_BOOT */ #endif /* CONFIG_STATUS_LED */ } /* ------------------------------------------------------------------------- */ void ide_set_reset (int on) { volatile immap_t *immr = (immap_t *) CFG_IMMR; /* * Configure PC for IDE Reset Pin */ if (on) { /* assert RESET */ immr->im_ioport.iop_pcdat &= ~(CFG_PC_IDE_RESET); } else { /* release RESET */ immr->im_ioport.iop_pcdat |= CFG_PC_IDE_RESET; } /* program port pin as GPIO output */ immr->im_ioport.iop_pcpar &= ~(CFG_PC_IDE_RESET); immr->im_ioport.iop_pcso &= ~(CFG_PC_IDE_RESET); immr->im_ioport.iop_pcdir |= CFG_PC_IDE_RESET; } /* ------------------------------------------------------------------------- */