/* * (C) Copyright 2001 * St�ubli Faverges - <www.staubli.com> * Pierre AUBERT p.aubert@staubli.com * U-Boot port on RPXClassic LF (CLLF_BW31) board * * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.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 <i2c.h> #include <config.h> #include <mpc8xx.h> /* ------------------------------------------------------------------------- */ static long int dram_size (long int, long int *, long int); static unsigned char aschex_to_byte (unsigned char *cp); /* ------------------------------------------------------------------------- */ #define _NOT_USED_ 0xFFFFCC25 const uint sdram_table[] = { /* * Single Read. (Offset 00h in UPMA RAM) */ 0xCFFFCC24, 0x0FFFCC04, 0X0CAFCC04, 0X03AFCC08, 0x3FBFCC27, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Burst Read. (Offset 08h in UPMA RAM) */ 0xCFFFCC24, 0x0FFFCC04, 0x0CAFCC84, 0x03AFCC88, 0x3FBFCC27, /* last */ _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 18h in UPMA RAM) */ 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC04, 0x03FFCC00, 0x3FFFCC27, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Burst Write. (Offset 20h in UPMA RAM) */ 0xCFFFCC24, 0x0FFFCC04, 0x0CFFCC80, 0x03FFCC8C, 0x0CFFCC00, 0x33FFCC27, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Refresh. (Offset 30h in UPMA RAM) */ 0xC0FFCC24, 0x03FFCC24, 0x0FFFCC24, 0x0FFFCC24, 0x3FFFCC27, /* last */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, /* * Exception. (Offset 3Ch in UPMA RAM) */ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; /* ------------------------------------------------------------------------- */ /* * Check Board Identity: */ int checkboard (void) { puts ("Board: RPXClassic\n"); return (0); } /*----------------------------------------------------------------------------- * board_get_enetaddr -- Read the MAC Address in the I2C EEPROM *----------------------------------------------------------------------------- */ void board_get_enetaddr (uchar * enet) { int i; char buff[256], *cp; /* Initialize I2C */ i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); /* Read 256 bytes in EEPROM */ i2c_read (0x54, 0, 1, (uchar *)buff, 128); i2c_read (0x54, 128, 1, (uchar *)buff + 128, 128); /* Retrieve MAC address in buffer (key EA) */ for (cp = buff;;) { if (cp[0] == 'E' && cp[1] == 'A') { cp += 3; /* Read MAC address */ for (i = 0; i < 6; i++, cp += 2) { enet[i] = aschex_to_byte ((unsigned char *)cp); } } /* Scan to the end of the record */ while ((*cp != '\n') && (*cp != (char)0xff)) { cp++; } /* If the next character is a \n, 0 or ff, we are done. */ cp++; if ((*cp == '\n') || (*cp == 0) || (*cp == (char)0xff)) break; } #ifdef CONFIG_FEC_ENET /* The MAC address is the same as normal ethernet except the 3rd byte */ /* (See the E.P. Planet Core Overview manual */ enet[3] |= 0x80; #endif printf ("MAC address = %02x:%02x:%02x:%02x:%02x:%02x\n", enet[0], enet[1], enet[2], enet[3], enet[4], enet[5]); } void rpxclassic_init (void) { /* Enable NVRAM */ *((uchar *) BCSR0) |= BCSR0_ENNVRAM; #ifdef CONFIG_FEC_ENET /* Validate the fast ethernet tranceiver */ *((volatile uchar *) BCSR2) &= ~BCSR2_MIICTL; *((volatile uchar *) BCSR2) &= ~BCSR2_MIIPWRDWN; *((volatile uchar *) BCSR2) |= BCSR2_MIIRST; *((volatile uchar *) BCSR2) |= BCSR2_MIIPWRDWN; #endif } /* ------------------------------------------------------------------------- */ phys_size_t initdram (int board_type) { volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; long int size10; upmconfig (UPMA, (uint *) sdram_table, sizeof (sdram_table) / sizeof (uint)); /* Refresh clock prescalar */ memctl->memc_mptpr = CONFIG_SYS_MPTPR; memctl->memc_mar = 0x00000000; /* Map controller banks 1 to the SDRAM bank */ memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM; memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM; memctl->memc_mamr = CONFIG_SYS_MAMR_10COL & (~(MAMR_PTAE)); /* no refresh yet */ udelay (200); /* perform SDRAM initializsation sequence */ memctl->memc_mcr = 0x80002230; /* SDRAM bank 0 - refresh twice */ udelay (1); memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ udelay (1000); /* Check Bank 0 Memory Size * try 10 column mode */ size10 = dram_size (CONFIG_SYS_MAMR_10COL, SDRAM_BASE_PRELIM, SDRAM_MAX_SIZE); return (size10); } /* ------------------------------------------------------------------------- */ /* * 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 *) CONFIG_SYS_IMMR; volatile memctl8xx_t *memctl = &immap->im_memctl; memctl->memc_mamr = mamr_value; return (get_ram_size(base, maxsize)); } /*----------------------------------------------------------------------------- * aschex_to_byte -- *----------------------------------------------------------------------------- */ static unsigned char aschex_to_byte (unsigned char *cp) { u_char byte, c; c = *cp++; if ((c >= 'A') && (c <= 'F')) { c -= 'A'; c += 10; } else if ((c >= 'a') && (c <= 'f')) { c -= 'a'; c += 10; } else { c -= '0'; } byte = c * 16; c = *cp; if ((c >= 'A') && (c <= 'F')) { c -= 'A'; c += 10; } else if ((c >= 'a') && (c <= 'f')) { c -= 'a'; c += 10; } else { c -= '0'; } byte += c; return (byte); }