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kurobox_pro-setup.c
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1 /*
2  * arch/arm/mach-orion5x/kurobox_pro-setup.c
3  *
4  * Maintainer: Ronen Shitrit <[email protected]>
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>
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 
53 static 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 
69 static struct resource kurobox_pro_nand_resource = {
71  .start = KUROBOX_PRO_NAND_BASE,
73 };
74 
75 static 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 
83 static 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 
97 static struct physmap_flash_data kurobox_pro_nor_flash_data = {
98  .width = 1,
99 };
100 
101 static struct resource kurobox_pro_nor_flash_resource = {
103  .start = KUROBOX_PRO_NOR_BOOT_BASE,
105 };
106 
107 static 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 
121 static 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 
139 static struct hw_pci kurobox_pro_pci __initdata = {
140  .nr_controllers = 2,
141  .setup = orion5x_pci_sys_setup,
142  .scan = orion5x_pci_sys_scan_bus,
143  .map_irq = kurobox_pro_pci_map_irq,
144 };
145 
146 static int __init kurobox_pro_pci_init(void)
147 {
148  if (machine_is_kurobox_pro()) {
150  pci_common_init(&kurobox_pro_pci);
151  }
152 
153  return 0;
154 }
155 
156 subsys_initcall(kurobox_pro_pci_init);
157 
158 /*****************************************************************************
159  * Ethernet
160  ****************************************************************************/
161 
162 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
164 };
165 
166 /*****************************************************************************
167  * RTC 5C372a on I2C bus
168  ****************************************************************************/
169 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
170  I2C_BOARD_INFO("rs5c372a", 0x32),
171 };
172 
173 /*****************************************************************************
174  * SATA
175  ****************************************************************************/
176 static struct mv_sata_platform_data kurobox_pro_sata_data = {
177  .n_ports = 2,
178 };
179 
180 /*****************************************************************************
181  * Kurobox Pro specific power off method via UART1-attached microcontroller
182  ****************************************************************************/
183 
184 #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
185 
186 static int kurobox_pro_miconread(unsigned char *buf, int count)
187 {
188  int i;
189  int timeout;
190 
191  for (i = 0; i < count; i++) {
192  timeout = 10;
193 
194  while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
195  if (--timeout == 0)
196  break;
197  udelay(1000);
198  }
199 
200  if (timeout == 0)
201  break;
202  buf[i] = readl(UART1_REG(RX));
203  }
204 
205  /* return read bytes */
206  return i;
207 }
208 
209 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
210 {
211  int i = 0;
212 
213  while (count--) {
214  while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
215  barrier();
216  writel(buf[i++], UART1_REG(TX));
217  }
218 
219  return 0;
220 }
221 
222 static int kurobox_pro_miconsend(const unsigned char *data, int count)
223 {
224  int i;
225  unsigned char checksum = 0;
226  unsigned char recv_buf[40];
227  unsigned char send_buf[40];
228  unsigned char correct_ack[3];
229  int retry = 2;
230 
231  /* Generate checksum */
232  for (i = 0; i < count; i++)
233  checksum -= data[i];
234 
235  do {
236  /* Send data */
237  kurobox_pro_miconwrite(data, count);
238 
239  /* send checksum */
240  kurobox_pro_miconwrite(&checksum, 1);
241 
242  if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
243  printk(KERN_ERR ">%s: receive failed.\n", __func__);
244 
245  /* send preamble to clear the receive buffer */
246  memset(&send_buf, 0xff, sizeof(send_buf));
247  kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
248 
249  /* make dummy reads */
250  mdelay(100);
251  kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
252  } else {
253  /* Generate expected ack */
254  correct_ack[0] = 0x01;
255  correct_ack[1] = data[1];
256  correct_ack[2] = 0x00;
257 
258  /* checksum Check */
259  if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
260  recv_buf[3]) & 0xFF) {
261  printk(KERN_ERR ">%s: Checksum Error : "
262  "Received data[%02x, %02x, %02x, %02x]"
263  "\n", __func__, recv_buf[0],
264  recv_buf[1], recv_buf[2], recv_buf[3]);
265  } else {
266  /* Check Received Data */
267  if (correct_ack[0] == recv_buf[0] &&
268  correct_ack[1] == recv_buf[1] &&
269  correct_ack[2] == recv_buf[2]) {
270  /* Interval for next command */
271  mdelay(10);
272 
273  /* Receive ACK */
274  return 0;
275  }
276  }
277  /* Received NAK or illegal Data */
278  printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
279  "Received\n", __func__);
280  }
281  } while (retry--);
282 
283  /* Interval for next command */
284  mdelay(10);
285 
286  return -1;
287 }
288 
289 static void kurobox_pro_power_off(void)
290 {
291  const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
292  const unsigned char shutdownwait[] = {0x00, 0x0c};
293  const unsigned char poweroff[] = {0x00, 0x06};
294  /* 38400 baud divisor */
295  const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
296 
297  pr_info("%s: triggering power-off...\n", __func__);
298 
299  /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
300  writel(0x83, UART1_REG(LCR));
301  writel(divisor & 0xff, UART1_REG(DLL));
302  writel((divisor >> 8) & 0xff, UART1_REG(DLM));
303  writel(0x1b, UART1_REG(LCR));
304  writel(0x00, UART1_REG(IER));
305  writel(0x07, UART1_REG(FCR));
306  writel(0x00, UART1_REG(MCR));
307 
308  /* Send the commands to shutdown the Kurobox Pro */
309  kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
310  kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
311  kurobox_pro_miconsend(poweroff, sizeof(poweroff));
312 }
313 
314 /*****************************************************************************
315  * General Setup
316  ****************************************************************************/
317 static unsigned int kurobox_pro_mpp_modes[] __initdata = {
318  MPP0_UNUSED,
319  MPP1_UNUSED,
320  MPP2_GPIO, /* GPIO Micon */
321  MPP3_GPIO, /* GPIO Rtc */
322  MPP4_UNUSED,
323  MPP5_UNUSED,
324  MPP6_NAND, /* NAND Flash REn */
325  MPP7_NAND, /* NAND Flash WEn */
326  MPP8_UNUSED,
327  MPP9_UNUSED,
328  MPP10_UNUSED,
329  MPP11_UNUSED,
330  MPP12_SATA_LED, /* SATA 0 presence */
331  MPP13_SATA_LED, /* SATA 1 presence */
332  MPP14_SATA_LED, /* SATA 0 active */
333  MPP15_SATA_LED, /* SATA 1 active */
334  MPP16_UART, /* UART1 RXD */
335  MPP17_UART, /* UART1 TXD */
336  MPP18_UART, /* UART1 CTSn */
337  MPP19_UART, /* UART1 RTSn */
338  0,
339 };
340 
341 static void __init kurobox_pro_init(void)
342 {
343  /*
344  * Setup basic Orion functions. Need to be called early.
345  */
346  orion5x_init();
347 
348  orion5x_mpp_conf(kurobox_pro_mpp_modes);
349 
350  /*
351  * Configure peripherals.
352  */
355  orion5x_eth_init(&kurobox_pro_eth_data);
357  orion5x_sata_init(&kurobox_pro_sata_data);
361 
364  platform_device_register(&kurobox_pro_nor_flash);
365 
366  if (machine_is_kurobox_pro()) {
369  platform_device_register(&kurobox_pro_nand_flash);
370  }
371 
372  i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
373 
374  /* register Kurobox Pro specific power-off method */
375  pm_power_off = kurobox_pro_power_off;
376 }
377 
378 #ifdef CONFIG_MACH_KUROBOX_PRO
379 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
380  /* Maintainer: Ronen Shitrit <[email protected]> */
381  .atag_offset = 0x100,
382  .init_machine = kurobox_pro_init,
383  .map_io = orion5x_map_io,
384  .init_early = orion5x_init_early,
385  .init_irq = orion5x_init_irq,
386  .timer = &orion5x_timer,
387  .fixup = tag_fixup_mem32,
388  .restart = orion5x_restart,
390 #endif
391 
392 #ifdef CONFIG_MACH_LINKSTATION_PRO
393 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
394  /* Maintainer: Byron Bradley <[email protected]> */
395  .atag_offset = 0x100,
396  .init_machine = kurobox_pro_init,
397  .map_io = orion5x_map_io,
398  .init_early = orion5x_init_early,
399  .init_irq = orion5x_init_irq,
400  .timer = &orion5x_timer,
401  .fixup = tag_fixup_mem32,
402  .restart = orion5x_restart,
404 #endif