e6ead8ded6ee7b5c053b1690c7080f79849d5a3f
[linux-2.6-microblaze.git] / arch / arm / mach-ep93xx / micro9.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  *  linux/arch/arm/mach-ep93xx/micro9.c
4  *
5  * Copyright (C) 2006 Contec Steuerungstechnik & Automation GmbH
6  *                    Manfred Gruber <m.gruber@tirol.com>
7  * Copyright (C) 2009 Contec Steuerungstechnik & Automation GmbH
8  *                    Hubert Feurstein <hubert.feurstein@contec.at>
9  */
10
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/io.h>
15
16 #include "hardware.h"
17
18 #include <asm/mach-types.h>
19 #include <asm/mach/arch.h>
20
21 #include "soc.h"
22
23 /*************************************************************************
24  * Micro9 NOR Flash
25  *
26  * Micro9-High has up to 64MB of 32-bit flash on CS1
27  * Micro9-Mid has up to 64MB of either 32-bit or 16-bit flash on CS1
28  * Micro9-Lite uses a separate MTD map driver for flash support
29  * Micro9-Slim has up to 64MB of either 32-bit or 16-bit flash on CS1
30  *************************************************************************/
31 static unsigned int __init micro9_detect_bootwidth(void)
32 {
33         u32 v;
34
35         /* Detect the bus width of the external flash memory */
36         v = __raw_readl(EP93XX_SYSCON_SYSCFG);
37         if (v & EP93XX_SYSCON_SYSCFG_LCSN7)
38                 return 4; /* 32-bit */
39         else
40                 return 2; /* 16-bit */
41 }
42
43 static void __init micro9_register_flash(void)
44 {
45         unsigned int width;
46
47         if (machine_is_micro9())
48                 width = 4;
49         else if (machine_is_micro9m() || machine_is_micro9s())
50                 width = micro9_detect_bootwidth();
51         else
52                 width = 0;
53
54         if (width)
55                 ep93xx_register_flash(width, EP93XX_CS1_PHYS_BASE, SZ_64M);
56 }
57
58
59 /*************************************************************************
60  * Micro9 Ethernet
61  *************************************************************************/
62 static struct ep93xx_eth_data __initdata micro9_eth_data = {
63         .phy_id         = 0x1f,
64 };
65
66
67 static void __init micro9_init_machine(void)
68 {
69         ep93xx_init_devices();
70         ep93xx_register_eth(&micro9_eth_data, 1);
71         micro9_register_flash();
72 }
73
74
75 #ifdef CONFIG_MACH_MICRO9H
76 MACHINE_START(MICRO9, "Contec Micro9-High")
77         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
78         .atag_offset    = 0x100,
79         .map_io         = ep93xx_map_io,
80         .init_irq       = ep93xx_init_irq,
81         .init_time      = ep93xx_timer_init,
82         .init_machine   = micro9_init_machine,
83         .restart        = ep93xx_restart,
84 MACHINE_END
85 #endif
86
87 #ifdef CONFIG_MACH_MICRO9M
88 MACHINE_START(MICRO9M, "Contec Micro9-Mid")
89         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
90         .atag_offset    = 0x100,
91         .map_io         = ep93xx_map_io,
92         .init_irq       = ep93xx_init_irq,
93         .init_time      = ep93xx_timer_init,
94         .init_machine   = micro9_init_machine,
95         .restart        = ep93xx_restart,
96 MACHINE_END
97 #endif
98
99 #ifdef CONFIG_MACH_MICRO9L
100 MACHINE_START(MICRO9L, "Contec Micro9-Lite")
101         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
102         .atag_offset    = 0x100,
103         .map_io         = ep93xx_map_io,
104         .init_irq       = ep93xx_init_irq,
105         .init_time      = ep93xx_timer_init,
106         .init_machine   = micro9_init_machine,
107         .restart        = ep93xx_restart,
108 MACHINE_END
109 #endif
110
111 #ifdef CONFIG_MACH_MICRO9S
112 MACHINE_START(MICRO9S, "Contec Micro9-Slim")
113         /* Maintainer: Hubert Feurstein <hubert.feurstein@contec.at> */
114         .atag_offset    = 0x100,
115         .map_io         = ep93xx_map_io,
116         .init_irq       = ep93xx_init_irq,
117         .init_time      = ep93xx_timer_init,
118         .init_machine   = micro9_init_machine,
119         .restart        = ep93xx_restart,
120 MACHINE_END
121 #endif