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1/*
2 * arch/arm/mach-ixp4xx/fsg-setup.c
3 *
4 * FSG board-setup
5 *
6 * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
7 *
8 * based on ixdp425-setup.c:
9 * Copyright (C) 2003-2004 MontaVista Software, Inc.
10 * based on nslu2-power.c
11 * Copyright (C) 2005 Tower Technologies
12 *
13 * Author: Rod Whitby <rod@whitby.id.au>
14 * Maintainers: http://www.nslu2-linux.org/
15 *
16 */
17#include <linux/gpio.h>
18#include <linux/if_ether.h>
19#include <linux/irq.h>
20#include <linux/serial.h>
21#include <linux/serial_8250.h>
22#include <linux/leds.h>
23#include <linux/reboot.h>
24#include <linux/i2c.h>
25#include <linux/i2c-gpio.h>
26#include <linux/io.h>
27#include <asm/mach-types.h>
28#include <asm/mach/arch.h>
29#include <asm/mach/flash.h>
30
31#define FSG_SDA_PIN 12
32#define FSG_SCL_PIN 13
33
34#define FSG_SB_GPIO 4 /* sync button */
35#define FSG_RB_GPIO 9 /* reset button */
36#define FSG_UB_GPIO 10 /* usb button */
37
38static struct flash_platform_data fsg_flash_data = {
39 .map_name = "cfi_probe",
40 .width = 2,
41};
42
43static struct resource fsg_flash_resource = {
44 .flags = IORESOURCE_MEM,
45};
46
47static struct platform_device fsg_flash = {
48 .name = "IXP4XX-Flash",
49 .id = 0,
50 .dev = {
51 .platform_data = &fsg_flash_data,
52 },
53 .num_resources = 1,
54 .resource = &fsg_flash_resource,
55};
56
57static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
58 .sda_pin = FSG_SDA_PIN,
59 .scl_pin = FSG_SCL_PIN,
60};
61
62static struct platform_device fsg_i2c_gpio = {
63 .name = "i2c-gpio",
64 .id = 0,
65 .dev = {
66 .platform_data = &fsg_i2c_gpio_data,
67 },
68};
69
70static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
71 {
72 I2C_BOARD_INFO("isl1208", 0x6f),
73 },
74};
75
76static struct resource fsg_uart_resources[] = {
77 {
78 .start = IXP4XX_UART1_BASE_PHYS,
79 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
80 .flags = IORESOURCE_MEM,
81 },
82 {
83 .start = IXP4XX_UART2_BASE_PHYS,
84 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
85 .flags = IORESOURCE_MEM,
86 }
87};
88
89static struct plat_serial8250_port fsg_uart_data[] = {
90 {
91 .mapbase = IXP4XX_UART1_BASE_PHYS,
92 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
93 .irq = IRQ_IXP4XX_UART1,
94 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
95 .iotype = UPIO_MEM,
96 .regshift = 2,
97 .uartclk = IXP4XX_UART_XTAL,
98 },
99 {
100 .mapbase = IXP4XX_UART2_BASE_PHYS,
101 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
102 .irq = IRQ_IXP4XX_UART2,
103 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
104 .iotype = UPIO_MEM,
105 .regshift = 2,
106 .uartclk = IXP4XX_UART_XTAL,
107 },
108 { }
109};
110
111static struct platform_device fsg_uart = {
112 .name = "serial8250",
113 .id = PLAT8250_DEV_PLATFORM,
114 .dev = {
115 .platform_data = fsg_uart_data,
116 },
117 .num_resources = ARRAY_SIZE(fsg_uart_resources),
118 .resource = fsg_uart_resources,
119};
120
121static struct platform_device fsg_leds = {
122 .name = "fsg-led",
123 .id = -1,
124};
125
126/* Built-in 10/100 Ethernet MAC interfaces */
127static struct eth_plat_info fsg_plat_eth[] = {
128 {
129 .phy = 5,
130 .rxq = 3,
131 .txreadyq = 20,
132 }, {
133 .phy = 4,
134 .rxq = 4,
135 .txreadyq = 21,
136 }
137};
138
139static struct platform_device fsg_eth[] = {
140 {
141 .name = "ixp4xx_eth",
142 .id = IXP4XX_ETH_NPEB,
143 .dev = {
144 .platform_data = fsg_plat_eth,
145 },
146 }, {
147 .name = "ixp4xx_eth",
148 .id = IXP4XX_ETH_NPEC,
149 .dev = {
150 .platform_data = fsg_plat_eth + 1,
151 },
152 }
153};
154
155static struct platform_device *fsg_devices[] __initdata = {
156 &fsg_i2c_gpio,
157 &fsg_flash,
158 &fsg_leds,
159 &fsg_eth[0],
160 &fsg_eth[1],
161};
162
163static irqreturn_t fsg_power_handler(int irq, void *dev_id)
164{
165 /* Signal init to do the ctrlaltdel action, this will bypass init if
166 * it hasn't started and do a kernel_restart.
167 */
168 ctrl_alt_del();
169
170 return IRQ_HANDLED;
171}
172
173static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
174{
175 /* This is the paper-clip reset which does an emergency reboot. */
176 printk(KERN_INFO "Restarting system.\n");
177 machine_restart(NULL);
178
179 /* This should never be reached. */
180 return IRQ_HANDLED;
181}
182
183static void __init fsg_init(void)
184{
185 uint8_t __iomem *f;
186
187 ixp4xx_sys_init();
188
189 fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
190 fsg_flash_resource.end =
191 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
192
193 *IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
194 *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
195
196 /* Configure CS2 for operation, 8bit and writable */
197 *IXP4XX_EXP_CS2 = 0xbfff0002;
198
199 i2c_register_board_info(0, fsg_i2c_board_info,
200 ARRAY_SIZE(fsg_i2c_board_info));
201
202 /* This is only useful on a modified machine, but it is valuable
203 * to have it first in order to see debug messages, and so that
204 * it does *not* get removed if platform_add_devices fails!
205 */
206 (void)platform_device_register(&fsg_uart);
207
208 platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
209
210 if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
211 IRQF_DISABLED | IRQF_TRIGGER_LOW,
212 "FSG reset button", NULL) < 0) {
213
214 printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
215 gpio_to_irq(FSG_RB_GPIO));
216 }
217
218 if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
219 IRQF_DISABLED | IRQF_TRIGGER_LOW,
220 "FSG power button", NULL) < 0) {
221
222 printk(KERN_DEBUG "Power Button IRQ %d not available\n",
223 gpio_to_irq(FSG_SB_GPIO));
224 }
225
226 /*
227 * Map in a portion of the flash and read the MAC addresses.
228 * Since it is stored in BE in the flash itself, we need to
229 * byteswap it if we're in LE mode.
230 */
231 f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
232 if (f) {
233#ifdef __ARMEB__
234 int i;
235 for (i = 0; i < 6; i++) {
236 fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
237 fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
238 }
239#else
240
241 /*
242 Endian-swapped reads from unaligned addresses are
243 required to extract the two MACs from the big-endian
244 Redboot config area in flash.
245 */
246
247 fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
248 fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
249 fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
250 fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
251 fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
252 fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);
253
254 fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
255 fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
256 fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
257 fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
258 fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
259 fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
260#endif
261 iounmap(f);
262 }
263 printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
264 fsg_plat_eth[0].hwaddr);
265 printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
266 fsg_plat_eth[1].hwaddr);
267
268}
269
270MACHINE_START(FSG, "Freecom FSG-3")
271 /* Maintainer: www.nslu2-linux.org */
272 .map_io = ixp4xx_map_io,
273 .init_early = ixp4xx_init_early,
274 .init_irq = ixp4xx_init_irq,
275 .timer = &ixp4xx_timer,
276 .atag_offset = 0x100,
277 .init_machine = fsg_init,
278#if defined(CONFIG_PCI)
279 .dma_zone_size = SZ_64M,
280#endif
281 .restart = ixp4xx_restart,
282MACHINE_END
283
1/*
2 * arch/arm/mach-ixp4xx/fsg-setup.c
3 *
4 * FSG board-setup
5 *
6 * Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
7 *
8 * based on ixdp425-setup.c:
9 * Copyright (C) 2003-2004 MontaVista Software, Inc.
10 * based on nslu2-power.c
11 * Copyright (C) 2005 Tower Technologies
12 *
13 * Author: Rod Whitby <rod@whitby.id.au>
14 * Maintainers: http://www.nslu2-linux.org/
15 *
16 */
17#include <linux/gpio.h>
18#include <linux/if_ether.h>
19#include <linux/irq.h>
20#include <linux/serial.h>
21#include <linux/serial_8250.h>
22#include <linux/leds.h>
23#include <linux/reboot.h>
24#include <linux/i2c.h>
25#include <linux/i2c-gpio.h>
26#include <linux/io.h>
27#include <asm/mach-types.h>
28#include <asm/mach/arch.h>
29#include <asm/mach/flash.h>
30
31#define FSG_SDA_PIN 12
32#define FSG_SCL_PIN 13
33
34#define FSG_SB_GPIO 4 /* sync button */
35#define FSG_RB_GPIO 9 /* reset button */
36#define FSG_UB_GPIO 10 /* usb button */
37
38static struct flash_platform_data fsg_flash_data = {
39 .map_name = "cfi_probe",
40 .width = 2,
41};
42
43static struct resource fsg_flash_resource = {
44 .flags = IORESOURCE_MEM,
45};
46
47static struct platform_device fsg_flash = {
48 .name = "IXP4XX-Flash",
49 .id = 0,
50 .dev = {
51 .platform_data = &fsg_flash_data,
52 },
53 .num_resources = 1,
54 .resource = &fsg_flash_resource,
55};
56
57static struct i2c_gpio_platform_data fsg_i2c_gpio_data = {
58 .sda_pin = FSG_SDA_PIN,
59 .scl_pin = FSG_SCL_PIN,
60};
61
62static struct platform_device fsg_i2c_gpio = {
63 .name = "i2c-gpio",
64 .id = 0,
65 .dev = {
66 .platform_data = &fsg_i2c_gpio_data,
67 },
68};
69
70static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
71 {
72 I2C_BOARD_INFO("isl1208", 0x6f),
73 },
74};
75
76static struct resource fsg_uart_resources[] = {
77 {
78 .start = IXP4XX_UART1_BASE_PHYS,
79 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
80 .flags = IORESOURCE_MEM,
81 },
82 {
83 .start = IXP4XX_UART2_BASE_PHYS,
84 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
85 .flags = IORESOURCE_MEM,
86 }
87};
88
89static struct plat_serial8250_port fsg_uart_data[] = {
90 {
91 .mapbase = IXP4XX_UART1_BASE_PHYS,
92 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
93 .irq = IRQ_IXP4XX_UART1,
94 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
95 .iotype = UPIO_MEM,
96 .regshift = 2,
97 .uartclk = IXP4XX_UART_XTAL,
98 },
99 {
100 .mapbase = IXP4XX_UART2_BASE_PHYS,
101 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
102 .irq = IRQ_IXP4XX_UART2,
103 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
104 .iotype = UPIO_MEM,
105 .regshift = 2,
106 .uartclk = IXP4XX_UART_XTAL,
107 },
108 { }
109};
110
111static struct platform_device fsg_uart = {
112 .name = "serial8250",
113 .id = PLAT8250_DEV_PLATFORM,
114 .dev = {
115 .platform_data = fsg_uart_data,
116 },
117 .num_resources = ARRAY_SIZE(fsg_uart_resources),
118 .resource = fsg_uart_resources,
119};
120
121static struct platform_device fsg_leds = {
122 .name = "fsg-led",
123 .id = -1,
124};
125
126/* Built-in 10/100 Ethernet MAC interfaces */
127static struct eth_plat_info fsg_plat_eth[] = {
128 {
129 .phy = 5,
130 .rxq = 3,
131 .txreadyq = 20,
132 }, {
133 .phy = 4,
134 .rxq = 4,
135 .txreadyq = 21,
136 }
137};
138
139static struct platform_device fsg_eth[] = {
140 {
141 .name = "ixp4xx_eth",
142 .id = IXP4XX_ETH_NPEB,
143 .dev = {
144 .platform_data = fsg_plat_eth,
145 },
146 }, {
147 .name = "ixp4xx_eth",
148 .id = IXP4XX_ETH_NPEC,
149 .dev = {
150 .platform_data = fsg_plat_eth + 1,
151 },
152 }
153};
154
155static struct platform_device *fsg_devices[] __initdata = {
156 &fsg_i2c_gpio,
157 &fsg_flash,
158 &fsg_leds,
159 &fsg_eth[0],
160 &fsg_eth[1],
161};
162
163static irqreturn_t fsg_power_handler(int irq, void *dev_id)
164{
165 /* Signal init to do the ctrlaltdel action, this will bypass init if
166 * it hasn't started and do a kernel_restart.
167 */
168 ctrl_alt_del();
169
170 return IRQ_HANDLED;
171}
172
173static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
174{
175 /* This is the paper-clip reset which does an emergency reboot. */
176 printk(KERN_INFO "Restarting system.\n");
177 machine_restart(NULL);
178
179 /* This should never be reached. */
180 return IRQ_HANDLED;
181}
182
183static void __init fsg_init(void)
184{
185 uint8_t __iomem *f;
186
187 ixp4xx_sys_init();
188
189 fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
190 fsg_flash_resource.end =
191 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
192
193 *IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
194 *IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
195
196 /* Configure CS2 for operation, 8bit and writable */
197 *IXP4XX_EXP_CS2 = 0xbfff0002;
198
199 i2c_register_board_info(0, fsg_i2c_board_info,
200 ARRAY_SIZE(fsg_i2c_board_info));
201
202 /* This is only useful on a modified machine, but it is valuable
203 * to have it first in order to see debug messages, and so that
204 * it does *not* get removed if platform_add_devices fails!
205 */
206 (void)platform_device_register(&fsg_uart);
207
208 platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
209
210 if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
211 IRQF_TRIGGER_LOW, "FSG reset button", NULL) < 0) {
212
213 printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
214 gpio_to_irq(FSG_RB_GPIO));
215 }
216
217 if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
218 IRQF_TRIGGER_LOW, "FSG power button", NULL) < 0) {
219
220 printk(KERN_DEBUG "Power Button IRQ %d not available\n",
221 gpio_to_irq(FSG_SB_GPIO));
222 }
223
224 /*
225 * Map in a portion of the flash and read the MAC addresses.
226 * Since it is stored in BE in the flash itself, we need to
227 * byteswap it if we're in LE mode.
228 */
229 f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
230 if (f) {
231#ifdef __ARMEB__
232 int i;
233 for (i = 0; i < 6; i++) {
234 fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
235 fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
236 }
237#else
238
239 /*
240 Endian-swapped reads from unaligned addresses are
241 required to extract the two MACs from the big-endian
242 Redboot config area in flash.
243 */
244
245 fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
246 fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
247 fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
248 fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
249 fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
250 fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);
251
252 fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
253 fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
254 fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
255 fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
256 fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
257 fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
258#endif
259 iounmap(f);
260 }
261 printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
262 fsg_plat_eth[0].hwaddr);
263 printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
264 fsg_plat_eth[1].hwaddr);
265
266}
267
268MACHINE_START(FSG, "Freecom FSG-3")
269 /* Maintainer: www.nslu2-linux.org */
270 .map_io = ixp4xx_map_io,
271 .init_early = ixp4xx_init_early,
272 .init_irq = ixp4xx_init_irq,
273 .init_time = ixp4xx_timer_init,
274 .atag_offset = 0x100,
275 .init_machine = fsg_init,
276#if defined(CONFIG_PCI)
277 .dma_zone_size = SZ_64M,
278#endif
279 .restart = ixp4xx_restart,
280MACHINE_END
281