1/*
2 * arch/arm/mach-orion5x/kurobox_pro-setup.c
3 *
4 * Maintainer: Ronen Shitrit <rshitrit@marvell.com>
5 *
6 * This file is licensed under the terms of the GNU General Public
7 * License version 2.  This program is licensed "as is" without any
8 * warranty of any kind, whether express or implied.
9 */
10#include <linux/gpio.h>
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/platform_device.h>
14#include <linux/pci.h>
15#include <linux/irq.h>
16#include <linux/delay.h>
17#include <linux/mtd/physmap.h>
18#include <linux/mtd/nand.h>
19#include <linux/mv643xx_eth.h>
20#include <linux/i2c.h>
21#include <linux/serial_reg.h>
22#include <linux/ata_platform.h>
23#include <asm/mach-types.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/pci.h>
26#include <mach/orion5x.h>
27#include <plat/orion_nand.h>
28#include "common.h"
29#include "mpp.h"
30
31/*****************************************************************************
32 * KUROBOX-PRO Info
33 ****************************************************************************/
34
35/*
36 * 256K NOR flash Device bus boot chip select
37 */
38
39#define KUROBOX_PRO_NOR_BOOT_BASE	0xf4000000
40#define KUROBOX_PRO_NOR_BOOT_SIZE	SZ_256K
41
42/*
43 * 256M NAND flash on Device bus chip select 1
44 */
45
46#define KUROBOX_PRO_NAND_BASE		0xfc000000
47#define KUROBOX_PRO_NAND_SIZE		SZ_2M
48
49/*****************************************************************************
50 * 256MB NAND Flash on Device bus CS0
51 ****************************************************************************/
52
53static struct mtd_partition kurobox_pro_nand_parts[] = {
54	{
55		.name	= "uImage",
56		.offset	= 0,
57		.size	= SZ_4M,
58	}, {
59		.name	= "rootfs",
60		.offset	= SZ_4M,
61		.size	= SZ_64M,
62	}, {
63		.name	= "extra",
64		.offset	= SZ_4M + SZ_64M,
65		.size	= SZ_256M - (SZ_4M + SZ_64M),
66	},
67};
68
69static struct resource kurobox_pro_nand_resource = {
70	.flags		= IORESOURCE_MEM,
71	.start		= KUROBOX_PRO_NAND_BASE,
72	.end		= KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
73};
74
75static struct orion_nand_data kurobox_pro_nand_data = {
76	.parts		= kurobox_pro_nand_parts,
77	.nr_parts	= ARRAY_SIZE(kurobox_pro_nand_parts),
78	.cle		= 0,
79	.ale		= 1,
80	.width		= 8,
81};
82
83static struct platform_device kurobox_pro_nand_flash = {
84	.name		= "orion_nand",
85	.id		= -1,
86	.dev		= {
87		.platform_data	= &kurobox_pro_nand_data,
88	},
89	.resource	= &kurobox_pro_nand_resource,
90	.num_resources	= 1,
91};
92
93/*****************************************************************************
94 * 256KB NOR Flash on BOOT Device
95 ****************************************************************************/
96
97static struct physmap_flash_data kurobox_pro_nor_flash_data = {
98	.width		= 1,
99};
100
101static struct resource kurobox_pro_nor_flash_resource = {
102	.flags			= IORESOURCE_MEM,
103	.start			= KUROBOX_PRO_NOR_BOOT_BASE,
104	.end			= KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
105};
106
107static struct platform_device kurobox_pro_nor_flash = {
108	.name			= "physmap-flash",
109	.id			= 0,
110	.dev		= {
111		.platform_data	= &kurobox_pro_nor_flash_data,
112	},
113	.num_resources		= 1,
114	.resource		= &kurobox_pro_nor_flash_resource,
115};
116
117/*****************************************************************************
118 * PCI
119 ****************************************************************************/
120
121static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
122	u8 pin)
123{
124	int irq;
125
126	/*
127	 * Check for devices with hard-wired IRQs.
128	 */
129	irq = orion5x_pci_map_irq(dev, slot, pin);
130	if (irq != -1)
131		return irq;
132
133	/*
134	 * PCI isn't used on the Kuro
135	 */
136	return -1;
137}
138
139static struct hw_pci kurobox_pro_pci __initdata = {
140	.nr_controllers	= 2,
141	.swizzle	= pci_std_swizzle,
142	.setup		= orion5x_pci_sys_setup,
143	.scan		= orion5x_pci_sys_scan_bus,
144	.map_irq	= kurobox_pro_pci_map_irq,
145};
146
147static int __init kurobox_pro_pci_init(void)
148{
149	if (machine_is_kurobox_pro()) {
150		orion5x_pci_disable();
151		pci_common_init(&kurobox_pro_pci);
152	}
153
154	return 0;
155}
156
157subsys_initcall(kurobox_pro_pci_init);
158
159/*****************************************************************************
160 * Ethernet
161 ****************************************************************************/
162
163static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
164	.phy_addr	= MV643XX_ETH_PHY_ADDR(8),
165};
166
167/*****************************************************************************
168 * RTC 5C372a on I2C bus
169 ****************************************************************************/
170static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
171	I2C_BOARD_INFO("rs5c372a", 0x32),
172};
173
174/*****************************************************************************
175 * SATA
176 ****************************************************************************/
177static struct mv_sata_platform_data kurobox_pro_sata_data = {
178	.n_ports	= 2,
179};
180
181/*****************************************************************************
182 * Kurobox Pro specific power off method via UART1-attached microcontroller
183 ****************************************************************************/
184
185#define UART1_REG(x)	(UART1_VIRT_BASE + ((UART_##x) << 2))
186
187static int kurobox_pro_miconread(unsigned char *buf, int count)
188{
189	int i;
190	int timeout;
191
192	for (i = 0; i < count; i++) {
193		timeout = 10;
194
195		while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
196			if (--timeout == 0)
197				break;
198			udelay(1000);
199		}
200
201		if (timeout == 0)
202			break;
203		buf[i] = readl(UART1_REG(RX));
204	}
205
206	/* return read bytes */
207	return i;
208}
209
210static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
211{
212	int i = 0;
213
214	while (count--) {
215		while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
216			barrier();
217		writel(buf[i++], UART1_REG(TX));
218	}
219
220	return 0;
221}
222
223static int kurobox_pro_miconsend(const unsigned char *data, int count)
224{
225	int i;
226	unsigned char checksum = 0;
227	unsigned char recv_buf[40];
228	unsigned char send_buf[40];
229	unsigned char correct_ack[3];
230	int retry = 2;
231
232	/* Generate checksum */
233	for (i = 0; i < count; i++)
234		checksum -=  data[i];
235
236	do {
237		/* Send data */
238		kurobox_pro_miconwrite(data, count);
239
240		/* send checksum */
241		kurobox_pro_miconwrite(&checksum, 1);
242
243		if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
244			printk(KERN_ERR ">%s: receive failed.\n", __func__);
245
246			/* send preamble to clear the receive buffer */
247			memset(&send_buf, 0xff, sizeof(send_buf));
248			kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
249
250			/* make dummy reads */
251			mdelay(100);
252			kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
253		} else {
254			/* Generate expected ack */
255			correct_ack[0] = 0x01;
256			correct_ack[1] = data[1];
257			correct_ack[2] = 0x00;
258
259			/* checksum Check */
260			if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
261			     recv_buf[3]) & 0xFF) {
262				printk(KERN_ERR ">%s: Checksum Error : "
263					"Received data[%02x, %02x, %02x, %02x]"
264					"\n", __func__, recv_buf[0],
265					recv_buf[1], recv_buf[2], recv_buf[3]);
266			} else {
267				/* Check Received Data */
268				if (correct_ack[0] == recv_buf[0] &&
269				    correct_ack[1] == recv_buf[1] &&
270				    correct_ack[2] == recv_buf[2]) {
271					/* Interval for next command */
272					mdelay(10);
273
274					/* Receive ACK */
275					return 0;
276				}
277			}
278			/* Received NAK or illegal Data */
279			printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
280					"Received\n", __func__);
281		}
282	} while (retry--);
283
284	/* Interval for next command */
285	mdelay(10);
286
287	return -1;
288}
289
290static void kurobox_pro_power_off(void)
291{
292	const unsigned char watchdogkill[]	= {0x01, 0x35, 0x00};
293	const unsigned char shutdownwait[]	= {0x00, 0x0c};
294	const unsigned char poweroff[]		= {0x00, 0x06};
295	/* 38400 baud divisor */
296	const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
297
298	pr_info("%s: triggering power-off...\n", __func__);
299
300	/* hijack uart1 and reset into sane state (38400,8n1,even parity) */
301	writel(0x83, UART1_REG(LCR));
302	writel(divisor & 0xff, UART1_REG(DLL));
303	writel((divisor >> 8) & 0xff, UART1_REG(DLM));
304	writel(0x1b, UART1_REG(LCR));
305	writel(0x00, UART1_REG(IER));
306	writel(0x07, UART1_REG(FCR));
307	writel(0x00, UART1_REG(MCR));
308
309	/* Send the commands to shutdown the Kurobox Pro */
310	kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
311	kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
312	kurobox_pro_miconsend(poweroff, sizeof(poweroff));
313}
314
315/*****************************************************************************
316 * General Setup
317 ****************************************************************************/
318static unsigned int kurobox_pro_mpp_modes[] __initdata = {
319	MPP0_UNUSED,
320	MPP1_UNUSED,
321	MPP2_GPIO,		/* GPIO Micon */
322	MPP3_GPIO,		/* GPIO Rtc */
323	MPP4_UNUSED,
324	MPP5_UNUSED,
325	MPP6_NAND,		/* NAND Flash REn */
326	MPP7_NAND,		/* NAND Flash WEn */
327	MPP8_UNUSED,
328	MPP9_UNUSED,
329	MPP10_UNUSED,
330	MPP11_UNUSED,
331	MPP12_SATA_LED,		/* SATA 0 presence */
332	MPP13_SATA_LED,		/* SATA 1 presence */
333	MPP14_SATA_LED,		/* SATA 0 active */
334	MPP15_SATA_LED,		/* SATA 1 active */
335	MPP16_UART,		/* UART1 RXD */
336	MPP17_UART,		/* UART1 TXD */
337	MPP18_UART,		/* UART1 CTSn */
338	MPP19_UART,		/* UART1 RTSn */
339	0,
340};
341
342static void __init kurobox_pro_init(void)
343{
344	/*
345	 * Setup basic Orion functions. Need to be called early.
346	 */
347	orion5x_init();
348
349	orion5x_mpp_conf(kurobox_pro_mpp_modes);
350
351	/*
352	 * Configure peripherals.
353	 */
354	orion5x_ehci0_init();
355	orion5x_ehci1_init();
356	orion5x_eth_init(&kurobox_pro_eth_data);
357	orion5x_i2c_init();
358	orion5x_sata_init(&kurobox_pro_sata_data);
359	orion5x_uart0_init();
360	orion5x_uart1_init();
361	orion5x_xor_init();
362
363	orion5x_setup_dev_boot_win(KUROBOX_PRO_NOR_BOOT_BASE,
364				   KUROBOX_PRO_NOR_BOOT_SIZE);
365	platform_device_register(&kurobox_pro_nor_flash);
366
367	if (machine_is_kurobox_pro()) {
368		orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
369				       KUROBOX_PRO_NAND_SIZE);
370		platform_device_register(&kurobox_pro_nand_flash);
371	}
372
373	i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
374
375	/* register Kurobox Pro specific power-off method */
376	pm_power_off = kurobox_pro_power_off;
377}
378
379#ifdef CONFIG_MACH_KUROBOX_PRO
380MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
381	/* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
382	.atag_offset	= 0x100,
383	.init_machine	= kurobox_pro_init,
384	.map_io		= orion5x_map_io,
385	.init_early	= orion5x_init_early,
386	.init_irq	= orion5x_init_irq,
387	.timer		= &orion5x_timer,
388	.fixup		= tag_fixup_mem32,
389	.restart	= orion5x_restart,
390MACHINE_END
391#endif
392
393#ifdef CONFIG_MACH_LINKSTATION_PRO
394MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
395	/* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
396	.atag_offset	= 0x100,
397	.init_machine	= kurobox_pro_init,
398	.map_io		= orion5x_map_io,
399	.init_early	= orion5x_init_early,
400	.init_irq	= orion5x_init_irq,
401	.timer		= &orion5x_timer,
402	.fixup		= tag_fixup_mem32,
403	.restart	= orion5x_restart,
404MACHINE_END
405#endif
406