| wdenk | e5cda75 | 2004-04-15 23:23:39 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 4 | * Marius Groeger <mgroeger@sysgo.de> |
| 5 | * |
| 6 | * 2004 (c) MontaVista Software, Inc. |
| 7 | * |
| 8 | * See file CREDITS for list of people who contributed to this |
| 9 | * project. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or |
| 12 | * modify it under the terms of the GNU General Public License as |
| 13 | * published by the Free Software Foundation; either version 2 of |
| 14 | * the License, or (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 24 | * MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <common.h> |
| 28 | #include <SA-1100.h> |
| 29 | |
| 30 | /* ------------------------------------------------------------------------- */ |
| 31 | |
| 32 | /* |
| 33 | * Board dependent initialisation |
| 34 | */ |
| 35 | |
| 36 | #define ECOR 0x8000 |
| 37 | #define ECOR_RESET 0x80 |
| 38 | #define ECOR_LEVEL_IRQ 0x40 |
| 39 | #define ECOR_WR_ATTRIB 0x04 |
| 40 | #define ECOR_ENABLE 0x01 |
| 41 | |
| 42 | #define ECSR 0x8002 |
| 43 | #define ECSR_IOIS8 0x20 |
| 44 | #define ECSR_PWRDWN 0x04 |
| 45 | #define ECSR_INT 0x02 |
| 46 | #define SMC_IO_SHIFT 2 |
| 47 | #define NCR_0 (*((volatile u_char *)(0x100000a0))) |
| 48 | #define NCR_ENET_OSC_EN (1<<3) |
| 49 | |
| 50 | static inline u8 |
| 51 | readb(volatile u8 * p) |
| 52 | { |
| 53 | return *p; |
| 54 | } |
| 55 | |
| 56 | static inline void |
| 57 | writeb(u8 v, volatile u8 * p) |
| 58 | { |
| 59 | *p = v; |
| 60 | } |
| 61 | |
| 62 | static void |
| 63 | smc_init(void) |
| 64 | { |
| 65 | u8 ecor; |
| 66 | u8 ecsr; |
| 67 | volatile u8 *addr = (volatile u8 *)(0x18000000 + (1 << 25)); |
| 68 | |
| 69 | NCR_0 |= NCR_ENET_OSC_EN; |
| 70 | udelay(100); |
| 71 | |
| 72 | ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET; |
| 73 | writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT)); |
| 74 | udelay(100); |
| 75 | |
| 76 | /* |
| 77 | * The device will ignore all writes to the enable bit while |
| 78 | * reset is asserted, even if the reset bit is cleared in the |
| 79 | * same write. Must clear reset first, then enable the device. |
| 80 | */ |
| 81 | writeb(ecor, addr + (ECOR << SMC_IO_SHIFT)); |
| 82 | writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT)); |
| 83 | |
| 84 | /* |
| 85 | * Set the appropriate byte/word mode. |
| 86 | */ |
| 87 | ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; |
| 88 | ecsr |= ECSR_IOIS8; |
| 89 | writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); |
| 90 | udelay(100); |
| 91 | } |
| 92 | |
| 93 | static void |
| 94 | neponset_init(void) |
| 95 | { |
| 96 | smc_init(); |
| 97 | } |
| 98 | |
| 99 | int |
| 100 | board_init(void) |
| 101 | { |
| 102 | DECLARE_GLOBAL_DATA_PTR; |
| 103 | |
| 104 | gd->bd->bi_arch_number = 25; /* Intel Assabet Board */ |
| 105 | gd->bd->bi_boot_params = 0xc0000100; |
| 106 | |
| 107 | neponset_init(); |
| 108 | |
| 109 | return 0; |
| 110 | } |
| 111 | |
| 112 | int |
| 113 | dram_init(void) |
| 114 | { |
| 115 | DECLARE_GLOBAL_DATA_PTR; |
| 116 | |
| 117 | gd->bd->bi_dram[0].start = PHYS_SDRAM_1; |
| 118 | gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE; |
| 119 | |
| 120 | return (0); |
| 121 | } |