1 /*
2 * linux/arch/arm/mach-ep93xx/micro9.c
3 *
4 * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
5 * Manfred Gruber <m.gruber@tirol.com>
6 * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
7 * Hubert Feurstein <hubert.feurstein@contec.at>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/io.h>
18
19 #include <mach/hardware.h>
20
21 #include <asm/hardware/vic.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/arch.h>
24
25 #include "soc.h"
26
27 /*************************************************************************
28 * Micro9 NOR Flash
29 *
30 * Micro9-High has up to 64MB of 32-bit flash on CS1
31 * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
32 * Micro9-Lite uses a separate MTD map driver for flash support
33 * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
34 *************************************************************************/
micro9_detect_bootwidth(void)35 static unsigned int __init micro9_detect_bootwidth(void)
36 {
37 u32 v;
38
39 /* Detect the bus width of the external flash memory */
40 v = __raw_readl(EP93XX_SYSCON_SYSCFG);
41 if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
42 return 4; /* 32-bit */
43 else
44 return 2; /* 16-bit */
45 }
46
micro9_register_flash(void)47 static void __init micro9_register_flash(void)
48 {
49 unsigned int width;
50
51 if (machine_is_micro9())
52 width = 4;
53 else if (machine_is_micro9m() || machine_is_micro9s())
54 width = micro9_detect_bootwidth();
55 else
56 width = 0;
57
58 if (width)
59 ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
60 }
61
62
63 /*************************************************************************
64 * Micro9 Ethernet
65 *************************************************************************/
66 static struct ep93xx_eth_data __initdata micro9_eth_data = {
67 .phy_id = 0x1f,
68 };
69
70
micro9_init_machine(void)71 static void __init micro9_init_machine(void)
72 {
73 ep93xx_init_devices();
74 ep93xx_register_eth(µ9_eth_data, 1);
75 micro9_register_flash();
76 }
77
78
79 #ifdef CONFIG_MACH_MICRO9H
80 MACHINE_START(MICRO9, "Contec Micro9-High")
81 /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
82 .atag_offset = 0x100,
83 .map_io = ep93xx_map_io,
84 .init_irq = ep93xx_init_irq,
85 .handle_irq = vic_handle_irq,
86 .timer = &ep93xx_timer,
87 .init_machine = micro9_init_machine,
88 .restart = ep93xx_restart,
89 MACHINE_END
90 #endif
91
92 #ifdef CONFIG_MACH_MICRO9M
93 MACHINE_START(MICRO9M, "Contec Micro9-Mid")
94 /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
95 .atag_offset = 0x100,
96 .map_io = ep93xx_map_io,
97 .init_irq = ep93xx_init_irq,
98 .handle_irq = vic_handle_irq,
99 .timer = &ep93xx_timer,
100 .init_machine = micro9_init_machine,
101 .restart = ep93xx_restart,
102 MACHINE_END
103 #endif
104
105 #ifdef CONFIG_MACH_MICRO9L
106 MACHINE_START(MICRO9L, "Contec Micro9-Lite")
107 /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
108 .atag_offset = 0x100,
109 .map_io = ep93xx_map_io,
110 .init_irq = ep93xx_init_irq,
111 .handle_irq = vic_handle_irq,
112 .timer = &ep93xx_timer,
113 .init_machine = micro9_init_machine,
114 .restart = ep93xx_restart,
115 MACHINE_END
116 #endif
117
118 #ifdef CONFIG_MACH_MICRO9S
119 MACHINE_START(MICRO9S, "Contec Micro9-Slim")
120 /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
121 .atag_offset = 0x100,
122 .map_io = ep93xx_map_io,
123 .init_irq = ep93xx_init_irq,
124 .handle_irq = vic_handle_irq,
125 .timer = &ep93xx_timer,
126 .init_machine = micro9_init_machine,
127 .restart = ep93xx_restart,
128 MACHINE_END
129 #endif
130