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(usec: 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(val: 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(buf: data, count);
235
236 /* send checksum */
237 kurobox_pro_miconwrite(buf: &checksum, count: 1);
238
239 if (kurobox_pro_miconread(buf: recv_buf, count: 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(buf: send_buf, count: sizeof(send_buf));
245
246 /* make dummy reads */
247 mdelay(100);
248 kurobox_pro_miconread(buf: recv_buf, count: 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(val: 0x83, UART1_REG(LCR));
298 writel(val: divisor & 0xff, UART1_REG(DLL));
299 writel(val: (divisor >> 8) & 0xff, UART1_REG(DLM));
300 writel(val: 0x1b, UART1_REG(LCR));
301 writel(val: 0x00, UART1_REG(IER));
302 writel(val: 0x07, UART1_REG(FCR));
303 writel(val: 0x00, UART1_REG(MCR));
304
305 /* Send the commands to shutdown the Kurobox Pro */
306 kurobox_pro_miconsend(data: watchdogkill, count: sizeof(watchdogkill)) ;
307 kurobox_pro_miconsend(data: shutdownwait, count: sizeof(shutdownwait)) ;
308 kurobox_pro_miconsend(data: poweroff, count: 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(mpp_list: kurobox_pro_mpp_modes);
346
347 /*
348 * Configure peripherals.
349 */
350 orion5x_ehci0_init();
351 orion5x_ehci1_init();
352 orion5x_eth_init(eth_data: &kurobox_pro_eth_data);
353 orion5x_i2c_init();
354 orion5x_sata_init(sata_data: &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(busnum: 0, info: &kurobox_pro_i2c_rtc, n: 1);
374
375 /* register Kurobox Pro specific power-off method */
376 register_platform_power_off(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

source code of linux/arch/arm/mach-orion5x/kurobox_pro-setup.c