| Mike Frysinger | 76d2180 | 2008-10-12 05:05:42 -0400 | [diff] [blame] | 1 | /* |
| 2 | * U-boot - main board file |
| 3 | * |
| 4 | * Copyright (c) 2005-2008 Analog Devices Inc. |
| 5 | * |
| 6 | * Licensed under the GPL-2 or later. |
| 7 | */ |
| 8 | |
| 9 | #include <common.h> |
| 10 | #include <config.h> |
| 11 | #include <command.h> |
| 12 | #include <asm/blackfin.h> |
| 13 | |
| 14 | DECLARE_GLOBAL_DATA_PTR; |
| 15 | |
| 16 | int checkboard(void) |
| 17 | { |
| 18 | printf("Board: ADI BF548 EZ-Kit board\n"); |
| 19 | printf(" Support: http://blackfin.uclinux.org/\n"); |
| 20 | return 0; |
| 21 | } |
| 22 | |
| 23 | phys_size_t initdram(int board_type) |
| 24 | { |
| 25 | gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE; |
| 26 | gd->bd->bi_memsize = CONFIG_SYS_MAX_RAM_SIZE; |
| 27 | return gd->bd->bi_memsize; |
| 28 | } |
| 29 | |
| 30 | int board_early_init_f(void) |
| 31 | { |
| 32 | /* Port H: PH8 - PH13 == A4 - A9 |
| 33 | * address lines of the parallel asynchronous memory interface |
| 34 | */ |
| 35 | |
| 36 | /************************************************ |
| 37 | * configure GPIO * |
| 38 | * set port H function enable register * |
| 39 | * configure PH8-PH13 as peripheral (not GPIO) * |
| 40 | *************************************************/ |
| 41 | bfin_write_PORTH_FER(0x3F03); |
| 42 | |
| 43 | /************************************************ |
| 44 | * set port H MUX to configure PH8-PH13 * |
| 45 | * 1st Function (MUX = 00) (bits 16-27 == 0) * |
| 46 | * Set to address signals A4-A9 * |
| 47 | *************************************************/ |
| 48 | bfin_write_PORTH_MUX(0); |
| 49 | |
| 50 | /************************************************ |
| 51 | * set port H direction register * |
| 52 | * enable PH8-PH13 as outputs * |
| 53 | *************************************************/ |
| 54 | bfin_write_PORTH_DIR_SET(0x3F00); |
| 55 | |
| 56 | /* Port I: PI0 - PH14 == A10 - A24 |
| 57 | * address lines of the parallel asynchronous memory interface |
| 58 | */ |
| 59 | |
| 60 | /************************************************ |
| 61 | * set port I function enable register * |
| 62 | * configure PI0-PI14 as peripheral (not GPIO) * |
| 63 | *************************************************/ |
| 64 | bfin_write_PORTI_FER(0x7fff); |
| 65 | |
| 66 | /************************************************** |
| 67 | * set PORT I MUX to configure PI14-PI0 as * |
| 68 | * 1st Function (MUX=00) - address signals A10-A24 * |
| 69 | ***************************************************/ |
| 70 | bfin_write_PORTI_MUX(0); |
| 71 | |
| 72 | /**************************************** |
| 73 | * set PORT I direction register * |
| 74 | * enable PI0 - PI14 as outputs * |
| 75 | *****************************************/ |
| 76 | bfin_write_PORTI_DIR_SET(0x7fff); |
| 77 | |
| 78 | return 0; |
| 79 | } |