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Diffstat (limited to 'board/c2mon/c2mon.c')
| -rw-r--r-- | board/c2mon/c2mon.c | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/board/c2mon/c2mon.c b/board/c2mon/c2mon.c deleted file mode 100644 index 348dfa0..0000000 --- a/board/c2mon/c2mon.c +++ /dev/null @@ -1,236 +0,0 @@ -/* - * (C) Copyright 2001 - * 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 <mpc8xx.h> - -/* ------------------------------------------------------------------------- */ - -static long int dram_size (long int, long int *, long int); - -/* ------------------------------------------------------------------------- */ - -#define _NOT_USED_ 0xFFFFFFFF - -const uint sdram_table[] = -{ - /* - * Single Read. (Offset 0 in UPMA RAM) - */ - 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00, - 0x1FF77C47, /* last */ - /* - * SDRAM Initialization (offset 5 in UPMA 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. - * - */ - 0x1FF77C34, 0xEFEABC34, 0x1FB57C35, /* last */ - /* - * Burst Read. (Offset 8 in UPMA 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 UPMA RAM) - */ - 0x1F07FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Burst Write. (Offset 20 in UPMA 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 UPMA RAM) - */ - 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04, - 0xFFFFFC84, 0xFFFFFC07, /* last */ - _NOT_USED_, _NOT_USED_, - _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, - /* - * Exception. (Offset 3c in UPMA RAM) - */ - 0x7FFFFC07, /* last */ - _NOT_USED_, _NOT_USED_, _NOT_USED_, -}; - -/* ------------------------------------------------------------------------- */ - - -/* - * Check Board Identity: - */ - -int checkboard (void) -{ - char buf[64]; - int i; - int l = getenv_f("serial#", buf, sizeof(buf)); - - puts ("Board: TTTech C2MON "); - - for (i = 0; i < l; ++i) { - if (buf[i] == ' ') - break; - putc (buf[i]); - } - - putc ('\n'); - - return (0); -} - -/* ------------------------------------------------------------------------- */ - -phys_size_t initdram (int board_type) -{ - volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - unsigned long reg; - long int size8, size9; - long int size = 0; - - upmconfig (UPMA, (uint *)sdram_table, sizeof(sdram_table) / sizeof(uint)); - - /* - * Preliminary prescaler for refresh (depends on number of - * banks): This value is selected for four cycles every 62.4 us - * with two SDRAM banks or four cycles every 31.2 us with one - * bank. It will be adjusted after memory sizing. - */ - memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_8K; - - memctl->memc_mar = 0x00000088; - - /* - * Map controller bank 2 the SDRAM bank 2 at physical address 0. - */ - memctl->memc_or2 = CONFIG_SYS_OR2_PRELIM; - memctl->memc_br2 = CONFIG_SYS_BR2_PRELIM; - - memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ - - udelay (200); - - /* perform SDRAM initializsation sequence */ - - memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */ - udelay (1); - memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */ - udelay (1); - - memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ - - udelay (1000); - - /* - * Check Bank 0 Memory Size - * - * try 8 column mode - */ - size8 = dram_size (CONFIG_SYS_MAMR_8COL, - SDRAM_BASE2_PRELIM, - SDRAM_MAX_SIZE); - - udelay (1000); - - /* - * try 9 column mode - */ - size9 = dram_size (CONFIG_SYS_MAMR_9COL, - SDRAM_BASE2_PRELIM, - SDRAM_MAX_SIZE); - - if (size8 < size9) { /* leave configuration at 9 columns */ - size = size9; -/* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */ - } else { /* back to 8 columns */ - size = size8; - memctl->memc_mamr = CONFIG_SYS_MAMR_8COL; - udelay (500); -/* debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size >> 20); */ - } - - udelay (1000); - - /* - * Adjust refresh rate depending on SDRAM type - * For types > 128 MBit leave it at the current (fast) rate - */ - if (size < 0x02000000) { - /* reduce to 15.6 us (62.4 us / quad) */ - memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; - udelay (1000); - } - - /* - * Final mapping - */ - memctl->memc_or2 = ((-size) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM; - memctl->memc_br2 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; - - /* - * No bank 1 - * - * invalidate bank - */ - memctl->memc_br3 = 0; - - /* adjust refresh rate depending on SDRAM type, one bank */ - reg = memctl->memc_mptpr; - reg >>= 1; /* reduce to CONFIG_SYS_MPTPR_1BK_8K / _4K */ - memctl->memc_mptpr = reg; - - udelay (10000); - - return (size); -} - -/* ------------------------------------------------------------------------- */ - -/* - * 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)); -} |