GNU Linux-libre 4.19.314-gnu1
[releases.git] / arch / arm / mach-sa1100 / nanoengine.c
1 /*
2  * linux/arch/arm/mach-sa1100/nanoengine.c
3  *
4  * Bright Star Engineering's nanoEngine board init code.
5  *
6  * Copyright (C) 2010 Marcelo Roberto Jimenez <mroberto@cpti.cetuc.puc-rio.br>
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License version 2 as
10  * published by the Free Software Foundation.
11  *
12  */
13
14 #include <linux/init.h>
15 #include <linux/gpio/machine.h>
16 #include <linux/kernel.h>
17 #include <linux/platform_data/sa11x0-serial.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/partitions.h>
20 #include <linux/root_dev.h>
21
22 #include <asm/mach-types.h>
23 #include <asm/setup.h>
24 #include <asm/page.h>
25
26 #include <asm/mach/arch.h>
27 #include <asm/mach/flash.h>
28 #include <asm/mach/map.h>
29
30 #include <mach/hardware.h>
31 #include <mach/nanoengine.h>
32 #include <mach/irqs.h>
33
34 #include "generic.h"
35
36 /* Flash bank 0 */
37 static struct mtd_partition nanoengine_partitions[] = {
38         {
39                 .name   = "nanoEngine boot firmware and parameter table",
40                 .size           = 0x00010000,  /* 32K */
41                 .offset         = 0,
42                 .mask_flags     = MTD_WRITEABLE,
43         }, {
44                 .name           = "kernel/initrd reserved",
45                 .size           = 0x002f0000,
46                 .offset         = 0x00010000,
47                 .mask_flags     = MTD_WRITEABLE,
48         }, {
49                 .name           = "experimental filesystem allocation",
50                 .size           = 0x00100000,
51                 .offset         = 0x00300000,
52                 .mask_flags     = MTD_WRITEABLE,
53         }
54 };
55
56 static struct flash_platform_data nanoengine_flash_data = {
57         .map_name       = "jedec_probe",
58         .parts          = nanoengine_partitions,
59         .nr_parts       = ARRAY_SIZE(nanoengine_partitions),
60 };
61
62 static struct resource nanoengine_flash_resources[] = {
63         DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M),
64         DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_32M),
65 };
66
67 static struct map_desc nanoengine_io_desc[] __initdata = {
68         {
69                 /* System Registers */
70                 .virtual        = 0xf0000000,
71                 .pfn            = __phys_to_pfn(0x10000000),
72                 .length         = 0x00100000,
73                 .type           = MT_DEVICE
74         }, {
75                 /* Internal PCI Memory Read/Write */
76                 .virtual        = NANO_PCI_MEM_RW_VIRT,
77                 .pfn            = __phys_to_pfn(NANO_PCI_MEM_RW_PHYS),
78                 .length         = NANO_PCI_MEM_RW_SIZE,
79                 .type           = MT_DEVICE
80         }, {
81                 /* Internal PCI Config Space */
82                 .virtual        = NANO_PCI_CONFIG_SPACE_VIRT,
83                 .pfn            = __phys_to_pfn(NANO_PCI_CONFIG_SPACE_PHYS),
84                 .length         = NANO_PCI_CONFIG_SPACE_SIZE,
85                 .type           = MT_DEVICE
86         }
87 };
88
89 static void __init nanoengine_map_io(void)
90 {
91         sa1100_map_io();
92         iotable_init(nanoengine_io_desc, ARRAY_SIZE(nanoengine_io_desc));
93
94         sa1100_register_uart(0, 1);
95         sa1100_register_uart(1, 2);
96         sa1100_register_uart(2, 3);
97         Ser1SDCR0 |= SDCR0_UART;
98         /* disable IRDA -- UART2 is used as a normal serial port */
99         Ser2UTCR4 = 0;
100         Ser2HSCR0 = 0;
101 }
102
103 static struct gpiod_lookup_table nanoengine_pcmcia0_gpio_table = {
104         .dev_id = "sa11x0-pcmcia.0",
105         .table = {
106                 GPIO_LOOKUP("gpio", 11, "ready", GPIO_ACTIVE_HIGH),
107                 GPIO_LOOKUP("gpio", 13, "detect", GPIO_ACTIVE_LOW),
108                 GPIO_LOOKUP("gpio", 15, "reset", GPIO_ACTIVE_HIGH),
109                 { },
110         },
111 };
112
113 static struct gpiod_lookup_table nanoengine_pcmcia1_gpio_table = {
114         .dev_id = "sa11x0-pcmcia.1",
115         .table = {
116                 GPIO_LOOKUP("gpio", 12, "ready", GPIO_ACTIVE_HIGH),
117                 GPIO_LOOKUP("gpio", 14, "detect", GPIO_ACTIVE_LOW),
118                 GPIO_LOOKUP("gpio", 16, "reset", GPIO_ACTIVE_HIGH),
119                 { },
120         },
121 };
122
123 static void __init nanoengine_init(void)
124 {
125         sa11x0_register_pcmcia(0, &nanoengine_pcmcia0_gpio_table);
126         sa11x0_register_pcmcia(1, &nanoengine_pcmcia1_gpio_table);
127         sa11x0_register_mtd(&nanoengine_flash_data, nanoengine_flash_resources,
128                 ARRAY_SIZE(nanoengine_flash_resources));
129 }
130
131 MACHINE_START(NANOENGINE, "BSE nanoEngine")
132         .atag_offset    = 0x100,
133         .map_io         = nanoengine_map_io,
134         .nr_irqs        = SA1100_NR_IRQS,
135         .init_irq       = sa1100_init_irq,
136         .init_time      = sa1100_timer_init,
137         .init_machine   = nanoengine_init,
138         .init_late      = sa11x0_init_late,
139         .restart        = sa11x0_restart,
140 MACHINE_END