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1 | /* |
2 | * (C) Copyright 2004 | |
3 | * Pierre AUBERT, Staubli Faverges, <p.aubert@staubli.com> | |
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 | ||
068b60a0 | 27 | #if defined(CONFIG_CMD_IDE) |
132ba5fd WD |
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; | |
6a397ef0 | 45 | #if defined(CONFIG_SYS_ATA_CS_ON_I2C2) |
6c7a1408 WD |
46 | /* ATA cs0/1 on i2c2 clk/io */ |
47 | reg = (reg & ~0x03000000ul) | 0x02000000ul; | |
c9969947 JS |
48 | #elif defined(CONFIG_SYS_ATA_CS_ON_TIMER01) |
49 | /* ATA cs0/1 on Timer 0/1 */ | |
50 | reg = (reg & ~0x03000000ul) | 0x03000000ul; | |
6c7a1408 WD |
51 | #else |
52 | /* ATA cs0/1 on Local Plus cs4/5 */ | |
132ba5fd | 53 | reg = (reg & ~0x03000000ul) | 0x01000000ul; |
6c7a1408 | 54 | #endif /* CONFIG_TOTAL5200 */ |
132ba5fd WD |
55 | *(vu_long *) MPC5XXX_GPS_PORT_CONFIG = reg; |
56 | ||
57 | /* All sample codes do that... */ | |
58 | *(vu_long *) MPC5XXX_ATA_SHARE_COUNT = 0; | |
59 | ||
a861558c HS |
60 | #if defined(CONFIG_UC101) |
61 | /* Configure and reset host */ | |
6af2eeb1 | 62 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = |
a861558c HS |
63 | MPC5xxx_ATA_HOSTCONF_SMR | MPC5xxx_ATA_HOSTCONF_FR; |
64 | udelay (10); | |
65 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = 0; | |
66 | #else | |
132ba5fd WD |
67 | /* Configure and reset host */ |
68 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY | | |
69 | MPC5xxx_ATA_HOSTCONF_SMR | MPC5xxx_ATA_HOSTCONF_FR; | |
70 | udelay (10); | |
71 | *(vu_long *) MPC5XXX_ATA_HOST_CONFIG = MPC5xxx_ATA_HOSTCONF_IORDY; | |
a861558c | 72 | #endif |
132ba5fd WD |
73 | |
74 | /* Disable prefetch on Commbus */ | |
75 | psdma->PtdCntrl |= 1; | |
76 | ||
77 | /* Init timings : we use PIO mode 0 timings */ | |
b2877496 | 78 | period = 1000000000 / gd->arch.ipb_clk; /* period in ns */ |
132ba5fd WD |
79 | |
80 | t0 = CALC_TIMING (600); | |
81 | t2_8 = CALC_TIMING (290); | |
82 | t2_16 = CALC_TIMING (165); | |
83 | reg = (t0 << 24) | (t2_8 << 16) | (t2_16 << 8); | |
84 | *(vu_long *) MPC5XXX_ATA_PIO1 = reg; | |
85 | ||
86 | t4 = CALC_TIMING (30); | |
87 | t1 = CALC_TIMING (70); | |
88 | ta = CALC_TIMING (35); | |
89 | reg = (t4 << 24) | (t1 << 16) | (ta << 8); | |
90 | ||
91 | *(vu_long *) MPC5XXX_ATA_PIO2 = reg; | |
92 | ||
c3f9d493 | 93 | #ifdef CONFIG_IDE_RESET |
42dfe7a1 | 94 | init_ide_reset (); |
c3f9d493 | 95 | #endif /* CONFIG_IDE_RESET */ |
132ba5fd WD |
96 | |
97 | return (0); | |
98 | } | |
068b60a0 | 99 | #endif |