diff options
Diffstat (limited to 'board/spd8xx/spd8xx.c')
| -rwxr-xr-x | board/spd8xx/spd8xx.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/board/spd8xx/spd8xx.c b/board/spd8xx/spd8xx.c new file mode 100755 index 0000000..c79b9b0 --- /dev/null +++ b/board/spd8xx/spd8xx.c @@ -0,0 +1,294 @@ +/* + * (C) Copyright 2000 + * 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> + +/* ------------------------------------------------------------------------- */ + +static long int dram_size (long int, long int *, long int); + +/* ------------------------------------------------------------------------- */ + +#define _NOT_USED_ 0xFFFFFFFF + +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_, +}; + + +const uint sdram_table[] = { + /* + * Single Read. (Offset 0 in UPM RAM) + */ + 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00, + 0x1FF77C47, /* last */ + /* + * 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) + */ + 0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00, + 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Single Write. (Offset 18 in UPM RAM) + */ + 0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* + * Burst Write. (Offset 20 in UPM RAM) + */ + 0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00, + 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */ + _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, 0xFFFFFC04, + 0xFFFFFC84, 0xFFFFFC07, /* last */ + _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) +{ + puts ("Board: SPD823TS\n"); + return (0); +} + +/* ------------------------------------------------------------------------- */ + +long int initdram (int board_type) +{ + volatile immap_t *immap = (immap_t *) CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + long int size_b0; + +#if 0 + /* + * Map controller bank 2 to the SRAM bank at preliminary address. + */ + memctl->memc_or2 = CFG_OR2; + memctl->memc_br2 = CFG_BR2; +#endif + + /* + * Map controller bank 4 to the PER8 bank. + */ + memctl->memc_or4 = CFG_OR4; + memctl->memc_br4 = CFG_BR4; + +#if 0 + /* Configure SHARC at UMA */ + upmconfig (UPMA, (uint *) sharc_table, + sizeof (sharc_table) / sizeof (uint)); + /* Map controller bank 5 to the SHARC */ + memctl->memc_or5 = CFG_OR5; + memctl->memc_br5 = CFG_BR5; +#endif + + memctl->memc_mamr = 0x00001000; + + /* Configure SDRAM at UMB */ + 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; + udelay (1); + memctl->memc_mcr = 0x80806130; + udelay (1); + memctl->memc_mcr = 0x80806130; + udelay (1); + memctl->memc_mcr = 0x80806106; + + memctl->memc_mbmr |= MBMR_PTBE; /* refresh enabled */ + + /* + * Check Bank 0 Memory Size for re-configuration + */ + size_b0 = + dram_size (CFG_MBMR_8COL, 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 *immap = (immap_t *) CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + memctl->memc_mbmr = mamr_value; + + return (get_ram_size (base, maxsize)); +} + +/* ------------------------------------------------------------------------- */ + +void reset_phy (void) +{ + immap_t *immr = (immap_t *) CFG_IMMR; + ushort sreg; + + /* Configure extra port pins for NS DP83843 PHY */ + immr->im_ioport.iop_papar &= ~(PA_ENET_MDC | PA_ENET_MDIO); + + sreg = immr->im_ioport.iop_padir; + sreg |= PA_ENET_MDC; /* Mgmt. Data Clock is Output */ + sreg &= ~(PA_ENET_MDIO); /* Mgmt. Data I/O is bidirect. => Input */ + immr->im_ioport.iop_padir = sreg; + + immr->im_ioport.iop_padat &= ~(PA_ENET_MDC); /* set MDC = 0 */ + + /* + * RESET in 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 &= ~(PC_ENET_RESET); + immr->im_ioport.iop_pcdir |= PC_ENET_RESET; + /* assert RESET signal of PHY */ + immr->im_ioport.iop_pcdat &= ~(PC_ENET_RESET); + udelay (10); + /* de-assert RESET signal of PHY */ + immr->im_ioport.iop_pcdat |= PC_ENET_RESET; + udelay (10); +} + +/* ------------------------------------------------------------------------- */ + +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; +} + +/* ------------------------------------------------------------------------- */ |