1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * RouterBoard 500 Platform devices
5 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
6 * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
8 #include <linux/kernel.h>
9 #include <linux/export.h>
10 #include <linux/init.h>
11 #include <linux/ctype.h>
12 #include <linux/string.h>
13 #include <linux/platform_device.h>
14 #include <linux/mtd/platnand.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/gpio.h>
17 #include <linux/gpio/machine.h>
18 #include <linux/gpio_keys.h>
19 #include <linux/input.h>
20 #include <linux/serial_8250.h>
22 #include <asm/bootinfo.h>
24 #include <asm/mach-rc32434/rc32434.h>
25 #include <asm/mach-rc32434/dma.h>
26 #include <asm/mach-rc32434/dma_v.h>
27 #include <asm/mach-rc32434/eth.h>
28 #include <asm/mach-rc32434/rb.h>
29 #include <asm/mach-rc32434/integ.h>
30 #include <asm/mach-rc32434/gpio.h>
31 #include <asm/mach-rc32434/irq.h>
33 #define ETH0_RX_DMA_ADDR (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET)
34 #define ETH0_TX_DMA_ADDR (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET)
36 extern unsigned int idt_cpu_freq;
38 static struct mpmc_device dev3;
40 void set_latch_u5(unsigned char or_mask, unsigned char nand_mask)
44 spin_lock_irqsave(&dev3.lock, flags);
46 dev3.state = (dev3.state | or_mask) & ~nand_mask;
47 writeb(dev3.state, dev3.base);
49 spin_unlock_irqrestore(&dev3.lock, flags);
51 EXPORT_SYMBOL(set_latch_u5);
53 unsigned char get_latch_u5(void)
57 EXPORT_SYMBOL(get_latch_u5);
59 static struct resource korina_dev0_res[] = {
61 .name = "korina_regs",
62 .start = ETH0_BASE_ADDR,
63 .end = ETH0_BASE_ADDR + sizeof(struct eth_regs),
64 .flags = IORESOURCE_MEM,
67 .start = ETH0_DMA_RX_IRQ,
68 .end = ETH0_DMA_RX_IRQ,
69 .flags = IORESOURCE_IRQ
72 .start = ETH0_DMA_TX_IRQ,
73 .end = ETH0_DMA_TX_IRQ,
74 .flags = IORESOURCE_IRQ
77 .start = ETH0_RX_OVR_IRQ,
78 .end = ETH0_RX_OVR_IRQ,
79 .flags = IORESOURCE_IRQ
82 .start = ETH0_TX_UND_IRQ,
83 .end = ETH0_TX_UND_IRQ,
84 .flags = IORESOURCE_IRQ
86 .name = "korina_dma_rx",
87 .start = ETH0_RX_DMA_ADDR,
88 .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
89 .flags = IORESOURCE_MEM,
91 .name = "korina_dma_tx",
92 .start = ETH0_TX_DMA_ADDR,
93 .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1,
94 .flags = IORESOURCE_MEM,
98 static struct korina_device korina_dev0_data = {
100 .mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee}
103 static struct platform_device korina_dev0 = {
106 .resource = korina_dev0_res,
107 .num_resources = ARRAY_SIZE(korina_dev0_res),
110 static struct resource cf_slot0_res[] = {
112 .name = "cf_membase",
113 .flags = IORESOURCE_MEM
116 .start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */
117 .end = (8 + 4 * 32 + CF_GPIO_NUM),
118 .flags = IORESOURCE_IRQ
122 static struct gpiod_lookup_table cf_slot0_gpio_table = {
123 .dev_id = "pata-rb532-cf",
125 GPIO_LOOKUP("gpio0", CF_GPIO_NUM,
126 NULL, GPIO_ACTIVE_HIGH),
131 static struct platform_device cf_slot0 = {
133 .name = "pata-rb532-cf",
134 .resource = cf_slot0_res,
135 .num_resources = ARRAY_SIZE(cf_slot0_res),
138 /* Resources and device for NAND */
139 static int rb532_dev_ready(struct nand_chip *chip)
141 return gpio_get_value(GPIO_RDY);
144 static void rb532_cmd_ctrl(struct nand_chip *chip, int cmd, unsigned int ctrl)
146 unsigned char orbits, nandbits;
148 if (ctrl & NAND_CTRL_CHANGE) {
149 orbits = (ctrl & NAND_CLE) << 1;
150 orbits |= (ctrl & NAND_ALE) >> 1;
152 nandbits = (~ctrl & NAND_CLE) << 1;
153 nandbits |= (~ctrl & NAND_ALE) >> 1;
155 set_latch_u5(orbits, nandbits);
157 if (cmd != NAND_CMD_NONE)
158 writeb(cmd, chip->legacy.IO_ADDR_W);
161 static struct resource nand_slot0_res[] = {
163 .name = "nand_membase",
164 .flags = IORESOURCE_MEM
168 static struct platform_nand_data rb532_nand_data = {
169 .ctrl.dev_ready = rb532_dev_ready,
170 .ctrl.cmd_ctrl = rb532_cmd_ctrl,
173 static struct platform_device nand_slot0 = {
176 .resource = nand_slot0_res,
177 .num_resources = ARRAY_SIZE(nand_slot0_res),
178 .dev.platform_data = &rb532_nand_data,
181 static struct mtd_partition rb532_partition_info[] = {
183 .name = "Routerboard NAND boot",
185 .size = 4 * 1024 * 1024,
188 .offset = MTDPART_OFS_NXTBLK,
189 .size = MTDPART_SIZ_FULL,
193 static struct platform_device rb532_led = {
198 static struct platform_device rb532_button = {
199 .name = "rb532-button",
203 static struct resource rb532_wdt_res[] = {
205 .name = "rb532_wdt_res",
206 .start = INTEG0_BASE_ADDR,
207 .end = INTEG0_BASE_ADDR + sizeof(struct integ),
208 .flags = IORESOURCE_MEM,
212 static struct platform_device rb532_wdt = {
213 .name = "rc32434_wdt",
215 .resource = rb532_wdt_res,
216 .num_resources = ARRAY_SIZE(rb532_wdt_res),
219 static struct plat_serial8250_port rb532_uart_res[] = {
222 .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
226 .flags = UPF_BOOT_AUTOCONF,
233 static struct platform_device rb532_uart = {
234 .name = "serial8250",
235 .id = PLAT8250_DEV_PLATFORM,
236 .dev.platform_data = &rb532_uart_res,
239 static struct platform_device *rb532_devs[] = {
249 /* NAND definitions */
250 #define NAND_CHIP_DELAY 25
252 static void __init rb532_nand_setup(void)
254 switch (mips_machtype) {
255 case MACH_MIKROTIK_RB532A:
256 set_latch_u5(LO_FOFF | LO_CEX,
257 LO_ULED | LO_ALE | LO_CLE | LO_WPX);
260 set_latch_u5(LO_WPX | LO_FOFF | LO_CEX,
261 LO_ULED | LO_ALE | LO_CLE);
265 /* Setup NAND specific settings */
266 rb532_nand_data.chip.nr_chips = 1;
267 rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info);
268 rb532_nand_data.chip.partitions = rb532_partition_info;
269 rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY;
273 static int __init plat_setup_devices(void)
275 /* Look for the CF card reader */
276 if (!readl(IDT434_REG_BASE + DEV1MASK))
277 rb532_devs[2] = NULL; /* disable cf_slot0 at index 2 */
279 cf_slot0_res[0].start =
280 readl(IDT434_REG_BASE + DEV1BASE);
281 cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000;
284 /* Read the NAND resources from the device controller */
285 nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE);
286 nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000;
288 /* Read and map device controller 3 */
289 dev3.base = ioremap(readl(IDT434_REG_BASE + DEV3BASE), 1);
292 printk(KERN_ERR "rb532: cannot remap device controller 3\n");
296 /* Initialise the NAND device */
299 /* set the uart clock to the current cpu frequency */
300 rb532_uart_res[0].uartclk = idt_cpu_freq;
302 dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data);
304 gpiod_add_lookup_table(&cf_slot0_gpio_table);
305 return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs));
310 static int __init setup_kmac(char *s)
312 printk(KERN_INFO "korina mac = %s\n", s);
313 if (!mac_pton(s, korina_dev0_data.mac))
314 printk(KERN_ERR "Invalid mac\n");
318 __setup("kmac=", setup_kmac);
320 #endif /* CONFIG_NET */
322 arch_initcall(plat_setup_devices);