diff options
Diffstat (limited to 'board/icu862/icu862.c')
| -rw-r--r-- | board/icu862/icu862.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/board/icu862/icu862.c b/board/icu862/icu862.c deleted file mode 100644 index 4c0e919..0000000 --- a/board/icu862/icu862.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * (C) Copyright 2001 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <config.h> -#include <mpc8xx.h> - -/* - * Memory Controller Using - * - * CS0 - Flash memory (0x40000000) - * CS1 - SDRAM (0x00000000} - * CS2 - S/UNI Ultra ATM155 - * CS3 - IDT 77106 ATM25 - * CS4 - DSP HPI - * CS5 - E1/T1 Interface device - * CS6 - PCMCIA device - * CS7 - PCMCIA device - */ - -/* ------------------------------------------------------------------------- */ - -#define _not_used_ 0xffffffff - -const uint sdram_table[] = { - /* single read. (offset 0 in upm RAM) */ - 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00, - 0x1ff77c47, - - /* MRS initialization (offset 5) */ - - 0x1ff77c34, 0xefeabc34, 0x1fb57c35, - - /* burst read. (offset 8 in upm RAM) */ - 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00, - 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, - _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, - _not_used_, _not_used_, _not_used_, _not_used_, - - /* burst write. (offset 20 in upm RAM) */ - 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00, - 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _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, _not_used_, _not_used_, - _not_used_, _not_used_, _not_used_, _not_used_, - - /* exception. (offset 3c in upm RAM) */ - 0x7ffffc07, _not_used_, _not_used_, _not_used_ -}; - -/* ------------------------------------------------------------------------- */ - -/* - * Check Board Identity: - */ - -int checkboard (void) -{ - puts ("Board: ICU862 Board\n"); - return 0; -} - -/* ------------------------------------------------------------------------- */ - -static long int dram_size (long int, long int *, long int); - -/* ------------------------------------------------------------------------- */ - -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 size8, size9; - long int size_b0 = 0; - unsigned long reg; - - 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 1 to the SDRAM bank at - * preliminary address - these have to be modified after the - * SDRAM size has been determined. - */ - memctl->memc_or1 = CONFIG_SYS_OR1_PRELIM; - memctl->memc_br1 = CONFIG_SYS_BR1_PRELIM; - - memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ - - udelay (200); - - /* perform SDRAM initializsation sequence */ - - memctl->memc_mcr = 0x80002105; /* SDRAM bank 0 */ - udelay (200); - memctl->memc_mcr = 0x80002230; /* SDRAM bank 0 - execute twice */ - udelay (200); - - memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ - - udelay (1000); - - /* - * Check Bank 0 Memory Size for re-configuration - * - * try 8 column mode - */ - size8 = dram_size (CONFIG_SYS_MAMR_8COL, SDRAM_BASE1_PRELIM, - SDRAM_MAX_SIZE); - - udelay (1000); - - /* - * try 9 column mode - */ - size9 = dram_size (CONFIG_SYS_MAMR_9COL, SDRAM_BASE1_PRELIM, - SDRAM_MAX_SIZE); - - if (size8 < size9) { /* leave configuration at 9 columns */ - size_b0 = size9; -/* debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size >> 20); */ - } else { /* back to 8 columns */ - size_b0 = 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, both banks - * For types > 128 MBit leave it at the current (fast) rate - */ - if ((size_b0 < 0x02000000)) { - /* reduce to 15.6 us (62.4 us / quad) */ - memctl->memc_mptpr = CONFIG_SYS_MPTPR_2BK_4K; - udelay (1000); - } - - /* - * Final mapping - */ - - memctl->memc_or1 = ((-size_b0) & 0xFFFF0000) | CONFIG_SYS_OR_TIMING_SDRAM; - memctl->memc_br1 = (CONFIG_SYS_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V; - - /* 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_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 *) CONFIG_SYS_IMMR; - volatile memctl8xx_t *memctl = &immap->im_memctl; - - memctl->memc_mamr = mamr_value; - - return (get_ram_size(base, maxsize)); -} |