projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 6689484c KJ |
1 | /* |
| 2 | * (C) Copyright 2008 | |
| 3 | * Martha J Marx, Silicon Turnkey Express, mmarx@silicontkx.com | |
| 4 | * mpc512x I/O pin/pad initialization for the ADS5121 board | |
| 5 | * See file CREDITS for list of people who contributed to this | |
| 6 | * project. | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU General Public License as | |
| 10 | * published by the Free Software Foundation; either version 2 of | |
| 11 | * the License, or (at your option) any later version. | |
| 12 | * | |
| 13 | * This program is distributed in the hope that it will be useful, | |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 | * GNU General Public License for more details. | |
| 17 | * | |
| 18 | * You should have received a copy of the GNU General Public License | |
| 19 | * along with this program; if not, write to the Free Software | |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
| 21 | * MA 02111-1307 USA | |
| 22 | */ | |
| 23 | ||
| 24 | #include <common.h> | |
| 25 | #include <linux/types.h> | |
| 843efb11 | 26 | #include <asm/io.h> |
| 6689484c KJ |
27 | |
| 28 | void iopin_initialize(iopin_t *ioregs_init, int len) | |
| 29 | { | |
| c9c101c6 | 30 | short i, j, p; |
| 19dc7e17 | 31 | u32 *reg; |
| 6d0f6bcf | 32 | immap_t *im = (immap_t *)CONFIG_SYS_IMMR; |
| 6689484c | 33 | |
| 19dc7e17 | 34 | reg = (u32 *)&(im->io_ctrl); |
| 6689484c KJ |
35 | |
| 36 | if (sizeof(ioregs_init) == 0) | |
| 37 | return; | |
| 38 | ||
| 39 | for (i = 0; i < len; i++) { | |
| 40 | for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long); | |
| 41 | p < ioregs_init[i].nr_pins; p++, j++) { | |
| 42 | if (ioregs_init[i].bit_or) | |
| 843efb11 | 43 | setbits_be32(reg + j, ioregs_init[i].val); |
| 6689484c | 44 | else |
| 843efb11 | 45 | out_be32 (reg + j, ioregs_init[i].val); |
| 6689484c KJ |
46 | } |
| 47 | } | |
| 48 | return; | |
| 49 | } | |
| fcc7fe42 AG |
50 | |
| 51 | void iopin_initialize_bits(iopin_t *ioregs_init, int len) | |
| 52 | { | |
| 53 | short i, j, p; | |
| 54 | u32 *reg, mask; | |
| 55 | immap_t *im = (immap_t *)CONFIG_SYS_IMMR; | |
| 56 | ||
| 57 | reg = (u32 *)&(im->io_ctrl); | |
| 58 | ||
| 59 | /* iterate over table entries */ | |
| 60 | for (i = 0; i < len; i++) { | |
| 61 | /* iterate over pins within a table entry */ | |
| 62 | for (p = 0, j = ioregs_init[i].p_offset / sizeof(u_long); | |
| 63 | p < ioregs_init[i].nr_pins; p++, j++) { | |
| 64 | if (ioregs_init[i].bit_or & IO_PIN_OVER_EACH) { | |
| 65 | /* replace all settings at once */ | |
| 66 | out_be32(reg + j, ioregs_init[i].val); | |
| 67 | } else { | |
| 68 | /* | |
| 69 | * only replace individual parts, but | |
| 70 | * REPLACE them instead of just ORing | |
| 71 | * them in and "inheriting" previously | |
| 72 | * set bits which we don't want | |
| 73 | */ | |
| 74 | mask = 0; | |
| 75 | if (ioregs_init[i].bit_or & IO_PIN_OVER_FMUX) | |
| 76 | mask |= IO_PIN_FMUX(3); | |
| 77 | ||
| 78 | if (ioregs_init[i].bit_or & IO_PIN_OVER_HOLD) | |
| 79 | mask |= IO_PIN_HOLD(3); | |
| 80 | ||
| 81 | if (ioregs_init[i].bit_or & IO_PIN_OVER_PULL) | |
| 82 | mask |= IO_PIN_PUD(1) | IO_PIN_PUE(1); | |
| 83 | ||
| 84 | if (ioregs_init[i].bit_or & IO_PIN_OVER_STRIG) | |
| 85 | mask |= IO_PIN_ST(1); | |
| 86 | ||
| 87 | if (ioregs_init[i].bit_or & IO_PIN_OVER_DRVSTR) | |
| 88 | mask |= IO_PIN_DS(3); | |
| 89 | /* | |
| 90 | * DON'T do the "mask, then insert" | |
| 91 | * in place on the register, it may | |
| 92 | * break access to external hardware | |
| 93 | * (like boot ROMs) when configuring | |
| 94 | * LPB related pins, while the code to | |
| 95 | * configure the pin is read from this | |
| 96 | * very address region | |
| 97 | */ | |
| 98 | clrsetbits_be32(reg + j, mask, | |
| 99 | ioregs_init[i].val & mask); | |
| 100 | } | |
| 101 | } | |
| 102 | } | |
| 103 | } |