1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * arch/arm/mach-orion5x/kurobox_pro-setup.c
4 *
5 * Maintainer: Ronen Shitrit <rshitrit@marvell.com>
6 */
7#include <linux/gpio.h>
8#include <linux/kernel.h>
9#include <linux/init.h>
10#include <linux/platform_device.h>
11#include <linux/pci.h>
12#include <linux/irq.h>
13#include <linux/delay.h>
14#include <linux/mtd/physmap.h>
15#include <linux/mtd/rawnand.h>
16#include <linux/mv643xx_eth.h>
17#include <linux/i2c.h>
18#include <linux/serial_reg.h>
19#include <linux/ata_platform.h>
20#include <asm/mach-types.h>
21#include <asm/mach/arch.h>
22#include <asm/mach/pci.h>
23#include <linux/platform_data/mtd-orion_nand.h>
24#include "common.h"
25#include "mpp.h"
26#include "orion5x.h"
27
28/*****************************************************************************
29 * KUROBOX-PRO Info
30 ****************************************************************************/
31
32/*
33 * 256K NOR flash Device bus boot chip select
34 */
35
36#define KUROBOX_PRO_NOR_BOOT_BASE	0xf4000000
37#define KUROBOX_PRO_NOR_BOOT_SIZE	SZ_256K
38
39/*
40 * 256M NAND flash on Device bus chip select 1
41 */
42
43#define KUROBOX_PRO_NAND_BASE		0xfc000000
44#define KUROBOX_PRO_NAND_SIZE		SZ_2M
45
46/*****************************************************************************
47 * 256MB NAND Flash on Device bus CS0
48 ****************************************************************************/
49
50static struct mtd_partition kurobox_pro_nand_parts[] = {
51	{
52		.name	= "uImage",
53		.offset	= 0,
54		.size	= SZ_4M,
55	}, {
56		.name	= "rootfs",
57		.offset	= SZ_4M,
58		.size	= SZ_64M,
59	}, {
60		.name	= "extra",
61		.offset	= SZ_4M + SZ_64M,
62		.size	= SZ_256M - (SZ_4M + SZ_64M),
63	},
64};
65
66static struct resource kurobox_pro_nand_resource = {
67	.flags		= IORESOURCE_MEM,
68	.start		= KUROBOX_PRO_NAND_BASE,
69	.end		= KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
70};
71
72static struct orion_nand_data kurobox_pro_nand_data = {
73	.parts		= kurobox_pro_nand_parts,
74	.nr_parts	= ARRAY_SIZE(kurobox_pro_nand_parts),
75	.cle		= 0,
76	.ale		= 1,
77	.width		= 8,
78};
79
80static struct platform_device kurobox_pro_nand_flash = {
81	.name		= "orion_nand",
82	.id		= -1,
83	.dev		= {
84		.platform_data	= &kurobox_pro_nand_data,
85	},
86	.resource	= &kurobox_pro_nand_resource,
87	.num_resources	= 1,
88};
89
90/*****************************************************************************
91 * 256KB NOR Flash on BOOT Device
92 ****************************************************************************/
93
94static struct physmap_flash_data kurobox_pro_nor_flash_data = {
95	.width		= 1,
96};
97
98static struct resource kurobox_pro_nor_flash_resource = {
99	.flags			= IORESOURCE_MEM,
100	.start			= KUROBOX_PRO_NOR_BOOT_BASE,
101	.end			= KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
102};
103
104static struct platform_device kurobox_pro_nor_flash = {
105	.name			= "physmap-flash",
106	.id			= 0,
107	.dev		= {
108		.platform_data	= &kurobox_pro_nor_flash_data,
109	},
110	.num_resources		= 1,
111	.resource		= &kurobox_pro_nor_flash_resource,
112};
113
114/*****************************************************************************
115 * PCI
116 ****************************************************************************/
117
118static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
119	u8 pin)
120{
121	int irq;
122
123	/*
124	 * Check for devices with hard-wired IRQs.
125	 */
126	irq = orion5x_pci_map_irq(dev, slot, pin);
127	if (irq != -1)
128		return irq;
129
130	/*
131	 * PCI isn't used on the Kuro
132	 */
133	return -1;
134}
135
136static struct hw_pci kurobox_pro_pci __initdata = {
137	.nr_controllers	= 2,
138	.setup		= orion5x_pci_sys_setup,
139	.scan		= orion5x_pci_sys_scan_bus,
140	.map_irq	= kurobox_pro_pci_map_irq,
141};
142
143static int __init kurobox_pro_pci_init(void)
144{
145	if (machine_is_kurobox_pro()) {
146		orion5x_pci_disable();
147		pci_common_init(&kurobox_pro_pci);
148	}
149
150	return 0;
151}
152
153subsys_initcall(kurobox_pro_pci_init);
154
155/*****************************************************************************
156 * Ethernet
157 ****************************************************************************/
158
159static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
160	.phy_addr	= MV643XX_ETH_PHY_ADDR(8),
161};
162
163/*****************************************************************************
164 * RTC 5C372a on I2C bus
165 ****************************************************************************/
166static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
167	I2C_BOARD_INFO("rs5c372a", 0x32),
168};
169
170/*****************************************************************************
171 * SATA
172 ****************************************************************************/
173static struct mv_sata_platform_data kurobox_pro_sata_data = {
174	.n_ports	= 2,
175};
176
177/*****************************************************************************
178 * Kurobox Pro specific power off method via UART1-attached microcontroller
179 ****************************************************************************/
180
181#define UART1_REG(x)	(UART1_VIRT_BASE + ((UART_##x) << 2))
182
183static int kurobox_pro_miconread(unsigned char *buf, int count)
184{
185	int i;
186	int timeout;
187
188	for (i = 0; i < count; i++) {
189		timeout = 10;
190
191		while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
192			if (--timeout == 0)
193				break;
194			udelay(1000);
195		}
196
197		if (timeout == 0)
198			break;
199		buf[i] = readl(UART1_REG(RX));
200	}
201
202	/* return read bytes */
203	return i;
204}
205
206static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
207{
208	int i = 0;
209
210	while (count--) {
211		while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
212			barrier();
213		writel(buf[i++], UART1_REG(TX));
214	}
215
216	return 0;
217}
218
219static int kurobox_pro_miconsend(const unsigned char *data, int count)
220{
221	int i;
222	unsigned char checksum = 0;
223	unsigned char recv_buf[40];
224	unsigned char send_buf[40];
225	unsigned char correct_ack[3];
226	int retry = 2;
227
228	/* Generate checksum */
229	for (i = 0; i < count; i++)
230		checksum -=  data[i];
231
232	do {
233		/* Send data */
234		kurobox_pro_miconwrite(data, count);
235
236		/* send checksum */
237		kurobox_pro_miconwrite(&checksum, 1);
238
239		if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
240			printk(KERN_ERR ">%s: receive failed.\n", __func__);
241
242			/* send preamble to clear the receive buffer */
243			memset(&send_buf, 0xff, sizeof(send_buf));
244			kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
245
246			/* make dummy reads */
247			mdelay(100);
248			kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
249		} else {
250			/* Generate expected ack */
251			correct_ack[0] = 0x01;
252			correct_ack[1] = data[1];
253			correct_ack[2] = 0x00;
254
255			/* checksum Check */
256			if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
257			     recv_buf[3]) & 0xFF) {
258				printk(KERN_ERR ">%s: Checksum Error : "
259					"Received data[%02x, %02x, %02x, %02x]"
260					"\n", __func__, recv_buf[0],
261					recv_buf[1], recv_buf[2], recv_buf[3]);
262			} else {
263				/* Check Received Data */
264				if (correct_ack[0] == recv_buf[0] &&
265				    correct_ack[1] == recv_buf[1] &&
266				    correct_ack[2] == recv_buf[2]) {
267					/* Interval for next command */
268					mdelay(10);
269
270					/* Receive ACK */
271					return 0;
272				}
273			}
274			/* Received NAK or illegal Data */
275			printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
276					"Received\n", __func__);
277		}
278	} while (retry--);
279
280	/* Interval for next command */
281	mdelay(10);
282
283	return -1;
284}
285
286static void kurobox_pro_power_off(void)
287{
288	const unsigned char watchdogkill[]	= {0x01, 0x35, 0x00};
289	const unsigned char shutdownwait[]	= {0x00, 0x0c};
290	const unsigned char poweroff[]		= {0x00, 0x06};
291	/* 38400 baud divisor */
292	const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
293
294	pr_info("%s: triggering power-off...\n", __func__);
295
296	/* hijack uart1 and reset into sane state (38400,8n1,even parity) */
297	writel(0x83, UART1_REG(LCR));
298	writel(divisor & 0xff, UART1_REG(DLL));
299	writel((divisor >> 8) & 0xff, UART1_REG(DLM));
300	writel(0x1b, UART1_REG(LCR));
301	writel(0x00, UART1_REG(IER));
302	writel(0x07, UART1_REG(FCR));
303	writel(0x00, UART1_REG(MCR));
304
305	/* Send the commands to shutdown the Kurobox Pro */
306	kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
307	kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
308	kurobox_pro_miconsend(poweroff, sizeof(poweroff));
309}
310
311/*****************************************************************************
312 * General Setup
313 ****************************************************************************/
314static unsigned int kurobox_pro_mpp_modes[] __initdata = {
315	MPP0_UNUSED,
316	MPP1_UNUSED,
317	MPP2_GPIO,		/* GPIO Micon */
318	MPP3_GPIO,		/* GPIO Rtc */
319	MPP4_UNUSED,
320	MPP5_UNUSED,
321	MPP6_NAND,		/* NAND Flash REn */
322	MPP7_NAND,		/* NAND Flash WEn */
323	MPP8_UNUSED,
324	MPP9_UNUSED,
325	MPP10_UNUSED,
326	MPP11_UNUSED,
327	MPP12_SATA_LED,		/* SATA 0 presence */
328	MPP13_SATA_LED,		/* SATA 1 presence */
329	MPP14_SATA_LED,		/* SATA 0 active */
330	MPP15_SATA_LED,		/* SATA 1 active */
331	MPP16_UART,		/* UART1 RXD */
332	MPP17_UART,		/* UART1 TXD */
333	MPP18_UART,		/* UART1 CTSn */
334	MPP19_UART,		/* UART1 RTSn */
335	0,
336};
337
338static void __init kurobox_pro_init(void)
339{
340	/*
341	 * Setup basic Orion functions. Need to be called early.
342	 */
343	orion5x_init();
344
345	orion5x_mpp_conf(kurobox_pro_mpp_modes);
346
347	/*
348	 * Configure peripherals.
349	 */
350	orion5x_ehci0_init();
351	orion5x_ehci1_init();
352	orion5x_eth_init(&kurobox_pro_eth_data);
353	orion5x_i2c_init();
354	orion5x_sata_init(&kurobox_pro_sata_data);
355	orion5x_uart0_init();
356	orion5x_uart1_init();
357	orion5x_xor_init();
358
359	mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
360				    ORION_MBUS_DEVBUS_BOOT_ATTR,
361				    KUROBOX_PRO_NOR_BOOT_BASE,
362				    KUROBOX_PRO_NOR_BOOT_SIZE);
363	platform_device_register(&kurobox_pro_nor_flash);
364
365	if (machine_is_kurobox_pro()) {
366		mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_TARGET(0),
367					    ORION_MBUS_DEVBUS_ATTR(0),
368					    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	.nr_irqs	= ORION5X_NR_IRQS,
384	.init_machine	= kurobox_pro_init,
385	.map_io		= orion5x_map_io,
386	.init_early	= orion5x_init_early,
387	.init_irq	= orion5x_init_irq,
388	.init_time	= orion5x_timer_init,
389	.fixup		= tag_fixup_mem32,
390	.restart	= orion5x_restart,
391MACHINE_END
392#endif
393
394#ifdef CONFIG_MACH_LINKSTATION_PRO
395MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
396	/* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
397	.atag_offset	= 0x100,
398	.nr_irqs	= ORION5X_NR_IRQS,
399	.init_machine	= kurobox_pro_init,
400	.map_io		= orion5x_map_io,
401	.init_early	= orion5x_init_early,
402	.init_irq	= orion5x_init_irq,
403	.init_time	= orion5x_timer_init,
404	.fixup		= tag_fixup_mem32,
405	.restart	= orion5x_restart,
406MACHINE_END
407#endif
408