projects / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 132ba5fd WD |
1 | /* |
| 2 | * (C) Copyright 2004 | |
| 3 | * Pierre AUBERT, Staubli Faverges, <[email protected]> | |
| 4 | * | |
| 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 | * Init is derived from Linux code. | |
| 24 | */ | |
| 25 | #include <common.h> | |
| 26 | ||
| 27 | #ifdef CFG_CMD_IDE | |
| 28 | #include <mpc5xxx.h> | |
| 29 | ||
| d87080b7 WD |
30 | DECLARE_GLOBAL_DATA_PTR; |
| 31 | ||
| 132ba5fd WD |
32 | #define CALC_TIMING(t) (t + period - 1) / period |
| 33 | ||
| c3f9d493 WD |
34 | #ifdef CONFIG_IDE_RESET |
| 35 | extern void init_ide_reset (void); | |
| 36 | #endif | |
| 132ba5fd WD |
37 | |
| 38 | int ide_preinit (void) | |
| 39 | { | |
| 132ba5fd WD |
40 | long period, t0, t1, t2_8, t2_16, t4, ta; |
| 41 | vu_long reg; | |
| 42 | struct mpc5xxx_sdma *psdma = (struct mpc5xxx_sdma *) MPC5XXX_SDMA; | |
| 43 | ||
| 44 | reg = *(vu_long *) MPC5XXX_GPS_PORT_CONFIG; | |
| 6c7a1408 WD |
45 | #if defined(CONFIG_TOTAL5200) |
| 46 | /* ATA cs0/1 on i2c2 clk/io */ | |
| 47 | reg = (reg & ~0x03000000ul) | 0x02000000ul; | |
| 48 | #else | |
| 49 | /* ATA cs0/1 on Local Plus cs4/5 */ | |
| 132ba5fd | 50 | reg = (reg & ~0x03000000ul) | 0x01000000ul; |
| 6c7a1408 | 51 | #endif /* CONFIG_TOTAL5200 */ |
| 132ba5fd WD |
52 | *(vu_long *) MPC5XXX_GPS_PORT_CONFIG = reg; |
| 53 | ||
| 54 | /* All sample codes do that... */ | |
| 55 | *(vu_long *) MPC5XXX_ATA_SHARE_COUNT = 0; | |
| 56 | ||
| 57 | /* Configure and reset host */ | |
| 58 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY | | |
| 59 | MPC5xxx_ATA_HOSTCONF_SMR | MPC5xxx_ATA_HOSTCONF_FR; | |
| 60 | udelay (10); | |
| 61 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY; | |
| 62 | ||
| 63 | /* Disable prefetch on Commbus */ | |
| 64 | psdma->PtdCntrl |= 1; | |
| 65 | ||
| 66 | /* Init timings : we use PIO mode 0 timings */ | |
| 67 | period = 1000000000 / gd->ipb_clk; /* period in ns */ | |
| 68 | ||
| 69 | t0 = CALC_TIMING (600); | |
| 70 | t2_8 = CALC_TIMING (290); | |
| 71 | t2_16 = CALC_TIMING (165); | |
| 72 | reg = (t0 << 24) | (t2_8 << 16) | (t2_16 << 8); | |
| 73 | *(vu_long *) MPC5XXX_ATA_PIO1 = reg; | |
| 74 | ||
| 75 | t4 = CALC_TIMING (30); | |
| 76 | t1 = CALC_TIMING (70); | |
| 77 | ta = CALC_TIMING (35); | |
| 78 | reg = (t4 << 24) | (t1 << 16) | (ta << 8); | |
| 79 | ||
| 80 | *(vu_long *) MPC5XXX_ATA_PIO2 = reg; | |
| 81 | ||
| c3f9d493 | 82 | #ifdef CONFIG_IDE_RESET |
| 42dfe7a1 | 83 | init_ide_reset (); |
| c3f9d493 | 84 | #endif /* CONFIG_IDE_RESET */ |
| 132ba5fd WD |
85 | |
| 86 | return (0); | |
| 87 | } | |
| 132ba5fd | 88 | #endif /* CFG_CMD_IDE */ |