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 *************************************************************************/
micro9_detect_bootwidth(void)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
micro9_register_flash(void)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
micro9_init_machine(void)67 static void __init micro9_init_machine(void)
68 {
69 ep93xx_init_devices();
70 ep93xx_register_eth(µ9_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
122