1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-sa1100/hackkit.c
4 *
5 * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
6 *
7 * This file contains all HackKit tweaks. Based on original work from
8 * Nicolas Pitre's assabet fixes
9 */
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/sched.h>
13 #include <linux/tty.h>
14 #include <linux/module.h>
15 #include <linux/errno.h>
16 #include <linux/cpufreq.h>
17 #include <linux/platform_data/sa11x0-serial.h>
18 #include <linux/serial_core.h>
19 #include <linux/mtd/mtd.h>
20 #include <linux/mtd/partitions.h>
21 #include <linux/tty.h>
22 #include <linux/gpio.h>
23 #include <linux/leds.h>
24 #include <linux/platform_device.h>
25 #include <linux/pgtable.h>
26
27 #include <asm/mach-types.h>
28 #include <asm/setup.h>
29 #include <asm/page.h>
30
31 #include <asm/mach/arch.h>
32 #include <asm/mach/flash.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/irq.h>
35
36 #include <mach/hardware.h>
37 #include <mach/irqs.h>
38
39 #include "generic.h"
40
41 /**********************************************************************
42 * prototypes
43 */
44
45 /* init funcs */
46 static void __init hackkit_map_io(void);
47
48 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
49
50 /**********************************************************************
51 * global data
52 */
53
54 /**********************************************************************
55 * static data
56 */
57
58 static struct map_desc hackkit_io_desc[] __initdata = {
59 { /* Flash bank 0 */
60 .virtual = 0xe8000000,
61 .pfn = __phys_to_pfn(0x00000000),
62 .length = 0x01000000,
63 .type = MT_DEVICE
64 },
65 };
66
67 static struct sa1100_port_fns hackkit_port_fns __initdata = {
68 .pm = hackkit_uart_pm,
69 };
70
71 /**********************************************************************
72 * Static functions
73 */
74
hackkit_map_io(void)75 static void __init hackkit_map_io(void)
76 {
77 sa1100_map_io();
78 iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
79
80 sa1100_register_uart_fns(&hackkit_port_fns);
81 sa1100_register_uart(0, 1); /* com port */
82 sa1100_register_uart(1, 2);
83 sa1100_register_uart(2, 3); /* radio module */
84
85 Ser1SDCR0 |= SDCR0_SUS;
86 }
87
88 /**
89 * hackkit_uart_pm - powermgmt callback function for system 3 UART
90 * @port: uart port structure
91 * @state: pm state
92 * @oldstate: old pm state
93 *
94 */
hackkit_uart_pm(struct uart_port * port,u_int state,u_int oldstate)95 static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
96 {
97 /* TODO: switch on/off uart in powersave mode */
98 }
99
100 static struct mtd_partition hackkit_partitions[] = {
101 {
102 .name = "BLOB",
103 .size = 0x00040000,
104 .offset = 0x00000000,
105 .mask_flags = MTD_WRITEABLE, /* force read-only */
106 }, {
107 .name = "config",
108 .size = 0x00040000,
109 .offset = MTDPART_OFS_APPEND,
110 }, {
111 .name = "kernel",
112 .size = 0x00100000,
113 .offset = MTDPART_OFS_APPEND,
114 }, {
115 .name = "initrd",
116 .size = 0x00180000,
117 .offset = MTDPART_OFS_APPEND,
118 }, {
119 .name = "rootfs",
120 .size = 0x700000,
121 .offset = MTDPART_OFS_APPEND,
122 }, {
123 .name = "data",
124 .size = MTDPART_SIZ_FULL,
125 .offset = MTDPART_OFS_APPEND,
126 }
127 };
128
129 static struct flash_platform_data hackkit_flash_data = {
130 .map_name = "cfi_probe",
131 .parts = hackkit_partitions,
132 .nr_parts = ARRAY_SIZE(hackkit_partitions),
133 };
134
135 static struct resource hackkit_flash_resource =
136 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M);
137
138 /* LEDs */
139 struct gpio_led hackkit_gpio_leds[] = {
140 {
141 .name = "hackkit:red",
142 .default_trigger = "cpu0",
143 .gpio = 22,
144 },
145 {
146 .name = "hackkit:green",
147 .default_trigger = "heartbeat",
148 .gpio = 23,
149 },
150 };
151
152 static struct gpio_led_platform_data hackkit_gpio_led_info = {
153 .leds = hackkit_gpio_leds,
154 .num_leds = ARRAY_SIZE(hackkit_gpio_leds),
155 };
156
157 static struct platform_device hackkit_leds = {
158 .name = "leds-gpio",
159 .id = -1,
160 .dev = {
161 .platform_data = &hackkit_gpio_led_info,
162 }
163 };
164
hackkit_init(void)165 static void __init hackkit_init(void)
166 {
167 sa11x0_register_mtd(&hackkit_flash_data, &hackkit_flash_resource, 1);
168 platform_device_register(&hackkit_leds);
169 }
170
171 /**********************************************************************
172 * Exported Functions
173 */
174
175 MACHINE_START(HACKKIT, "HackKit Cpu Board")
176 .atag_offset = 0x100,
177 .map_io = hackkit_map_io,
178 .nr_irqs = SA1100_NR_IRQS,
179 .init_irq = sa1100_init_irq,
180 .init_time = sa1100_timer_init,
181 .init_machine = hackkit_init,
182 .init_late = sa11x0_init_late,
183 .restart = sa11x0_restart,
184 MACHINE_END
185