1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/arm/mach-ixp4xx/ixdp425-setup.c
4 *
5 * IXDP425/IXCDP1100 board-setup
6 *
7 * Copyright (C) 2003-2005 MontaVista Software, Inc.
8 *
9 * Author: Deepak Saxena <dsaxena@plexity.net>
10 */
11
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/device.h>
15 #include <linux/serial.h>
16 #include <linux/tty.h>
17 #include <linux/serial_8250.h>
18 #include <linux/i2c-gpio.h>
19 #include <linux/io.h>
20 #include <linux/mtd/mtd.h>
21 #include <linux/mtd/rawnand.h>
22 #include <linux/mtd/partitions.h>
23 #include <linux/delay.h>
24 #include <linux/gpio.h>
25 #include <asm/types.h>
26 #include <asm/setup.h>
27 #include <asm/memory.h>
28 #include <mach/hardware.h>
29 #include <asm/mach-types.h>
30 #include <asm/irq.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/flash.h>
33
34 #define IXDP425_SDA_PIN 7
35 #define IXDP425_SCL_PIN 6
36
37 /* NAND Flash pins */
38 #define IXDP425_NAND_NCE_PIN 12
39
40 #define IXDP425_NAND_CMD_BYTE 0x01
41 #define IXDP425_NAND_ADDR_BYTE 0x02
42
43 static struct flash_platform_data ixdp425_flash_data = {
44 .map_name = "cfi_probe",
45 .width = 2,
46 };
47
48 static struct resource ixdp425_flash_resource = {
49 .flags = IORESOURCE_MEM,
50 };
51
52 static struct platform_device ixdp425_flash = {
53 .name = "IXP4XX-Flash",
54 .id = 0,
55 .dev = {
56 .platform_data = &ixdp425_flash_data,
57 },
58 .num_resources = 1,
59 .resource = &ixdp425_flash_resource,
60 };
61
62 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
63 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
64
65 static struct mtd_partition ixdp425_partitions[] = {
66 {
67 .name = "ixp400 NAND FS 0",
68 .offset = 0,
69 .size = SZ_8M
70 }, {
71 .name = "ixp400 NAND FS 1",
72 .offset = MTDPART_OFS_APPEND,
73 .size = MTDPART_SIZ_FULL
74 },
75 };
76
77 static void
ixdp425_flash_nand_cmd_ctrl(struct mtd_info * mtd,int cmd,unsigned int ctrl)78 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
79 {
80 struct nand_chip *this = mtd_to_nand(mtd);
81 int offset = (int)nand_get_controller_data(this);
82
83 if (ctrl & NAND_CTRL_CHANGE) {
84 if (ctrl & NAND_NCE) {
85 gpio_set_value(IXDP425_NAND_NCE_PIN, 0);
86 udelay(5);
87 } else
88 gpio_set_value(IXDP425_NAND_NCE_PIN, 1);
89
90 offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
91 offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
92 nand_set_controller_data(this, (void *)offset);
93 }
94
95 if (cmd != NAND_CMD_NONE)
96 writeb(cmd, this->IO_ADDR_W + offset);
97 }
98
99 static struct platform_nand_data ixdp425_flash_nand_data = {
100 .chip = {
101 .nr_chips = 1,
102 .chip_delay = 30,
103 .partitions = ixdp425_partitions,
104 .nr_partitions = ARRAY_SIZE(ixdp425_partitions),
105 },
106 .ctrl = {
107 .cmd_ctrl = ixdp425_flash_nand_cmd_ctrl
108 }
109 };
110
111 static struct resource ixdp425_flash_nand_resource = {
112 .flags = IORESOURCE_MEM,
113 };
114
115 static struct platform_device ixdp425_flash_nand = {
116 .name = "gen_nand",
117 .id = -1,
118 .dev = {
119 .platform_data = &ixdp425_flash_nand_data,
120 },
121 .num_resources = 1,
122 .resource = &ixdp425_flash_nand_resource,
123 };
124 #endif /* CONFIG_MTD_NAND_PLATFORM */
125
126 static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = {
127 .sda_pin = IXDP425_SDA_PIN,
128 .scl_pin = IXDP425_SCL_PIN,
129 };
130
131 static struct platform_device ixdp425_i2c_gpio = {
132 .name = "i2c-gpio",
133 .id = 0,
134 .dev = {
135 .platform_data = &ixdp425_i2c_gpio_data,
136 },
137 };
138
139 static struct resource ixdp425_uart_resources[] = {
140 {
141 .start = IXP4XX_UART1_BASE_PHYS,
142 .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
143 .flags = IORESOURCE_MEM
144 },
145 {
146 .start = IXP4XX_UART2_BASE_PHYS,
147 .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
148 .flags = IORESOURCE_MEM
149 }
150 };
151
152 static struct plat_serial8250_port ixdp425_uart_data[] = {
153 {
154 .mapbase = IXP4XX_UART1_BASE_PHYS,
155 .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
156 .irq = IRQ_IXP4XX_UART1,
157 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
158 .iotype = UPIO_MEM,
159 .regshift = 2,
160 .uartclk = IXP4XX_UART_XTAL,
161 },
162 {
163 .mapbase = IXP4XX_UART2_BASE_PHYS,
164 .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
165 .irq = IRQ_IXP4XX_UART2,
166 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
167 .iotype = UPIO_MEM,
168 .regshift = 2,
169 .uartclk = IXP4XX_UART_XTAL,
170 },
171 { },
172 };
173
174 static struct platform_device ixdp425_uart = {
175 .name = "serial8250",
176 .id = PLAT8250_DEV_PLATFORM,
177 .dev.platform_data = ixdp425_uart_data,
178 .num_resources = 2,
179 .resource = ixdp425_uart_resources
180 };
181
182 /* Built-in 10/100 Ethernet MAC interfaces */
183 static struct eth_plat_info ixdp425_plat_eth[] = {
184 {
185 .phy = 0,
186 .rxq = 3,
187 .txreadyq = 20,
188 }, {
189 .phy = 1,
190 .rxq = 4,
191 .txreadyq = 21,
192 }
193 };
194
195 static struct platform_device ixdp425_eth[] = {
196 {
197 .name = "ixp4xx_eth",
198 .id = IXP4XX_ETH_NPEB,
199 .dev.platform_data = ixdp425_plat_eth,
200 }, {
201 .name = "ixp4xx_eth",
202 .id = IXP4XX_ETH_NPEC,
203 .dev.platform_data = ixdp425_plat_eth + 1,
204 }
205 };
206
207 static struct platform_device *ixdp425_devices[] __initdata = {
208 &ixdp425_i2c_gpio,
209 &ixdp425_flash,
210 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
211 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
212 &ixdp425_flash_nand,
213 #endif
214 &ixdp425_uart,
215 &ixdp425_eth[0],
216 &ixdp425_eth[1],
217 };
218
ixdp425_init(void)219 static void __init ixdp425_init(void)
220 {
221 ixp4xx_sys_init();
222
223 ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
224 ixdp425_flash_resource.end =
225 IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
226
227 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
228 defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
229 ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
230 ixdp425_flash_nand_resource.end = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
231
232 gpio_request(IXDP425_NAND_NCE_PIN, "NAND NCE pin");
233 gpio_direction_output(IXDP425_NAND_NCE_PIN, 0);
234
235 /* Configure expansion bus for NAND Flash */
236 *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
237 IXP4XX_EXP_BUS_STROBE_T(1) | /* extend by 1 clock */
238 IXP4XX_EXP_BUS_CYCLES(0) | /* Intel cycles */
239 IXP4XX_EXP_BUS_SIZE(0) | /* 512bytes addr space*/
240 IXP4XX_EXP_BUS_WR_EN |
241 IXP4XX_EXP_BUS_BYTE_EN; /* 8 bit data bus */
242 #endif
243
244 if (cpu_is_ixp43x()) {
245 ixdp425_uart.num_resources = 1;
246 ixdp425_uart_data[1].flags = 0;
247 }
248
249 platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
250 }
251
252 #ifdef CONFIG_ARCH_IXDP425
253 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
254 /* Maintainer: MontaVista Software, Inc. */
255 .map_io = ixp4xx_map_io,
256 .init_early = ixp4xx_init_early,
257 .init_irq = ixp4xx_init_irq,
258 .init_time = ixp4xx_timer_init,
259 .atag_offset = 0x100,
260 .init_machine = ixdp425_init,
261 #if defined(CONFIG_PCI)
262 .dma_zone_size = SZ_64M,
263 #endif
264 .restart = ixp4xx_restart,
265 MACHINE_END
266 #endif
267
268 #ifdef CONFIG_MACH_IXDP465
269 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
270 /* Maintainer: MontaVista Software, Inc. */
271 .map_io = ixp4xx_map_io,
272 .init_early = ixp4xx_init_early,
273 .init_irq = ixp4xx_init_irq,
274 .init_time = ixp4xx_timer_init,
275 .atag_offset = 0x100,
276 .init_machine = ixdp425_init,
277 #if defined(CONFIG_PCI)
278 .dma_zone_size = SZ_64M,
279 #endif
280 MACHINE_END
281 #endif
282
283 #ifdef CONFIG_ARCH_PRPMC1100
284 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
285 /* Maintainer: MontaVista Software, Inc. */
286 .map_io = ixp4xx_map_io,
287 .init_early = ixp4xx_init_early,
288 .init_irq = ixp4xx_init_irq,
289 .init_time = ixp4xx_timer_init,
290 .atag_offset = 0x100,
291 .init_machine = ixdp425_init,
292 #if defined(CONFIG_PCI)
293 .dma_zone_size = SZ_64M,
294 #endif
295 MACHINE_END
296 #endif
297
298 #ifdef CONFIG_MACH_KIXRP435
299 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
300 /* Maintainer: MontaVista Software, Inc. */
301 .map_io = ixp4xx_map_io,
302 .init_early = ixp4xx_init_early,
303 .init_irq = ixp4xx_init_irq,
304 .init_time = ixp4xx_timer_init,
305 .atag_offset = 0x100,
306 .init_machine = ixdp425_init,
307 #if defined(CONFIG_PCI)
308 .dma_zone_size = SZ_64M,
309 #endif
310 MACHINE_END
311 #endif
312