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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-orion5x/kurobox_pro-setup.c

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  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 <linux/platform_data/mtd-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 
 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 = {
 70         .flags          = IORESOURCE_MEM,
 71         .start          = KUROBOX_PRO_NAND_BASE,
 72         .end            = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
 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 = {
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 
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()) {
149                 orion5x_pci_disable();
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 = {
163         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
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          */
353         orion5x_ehci0_init();
354         orion5x_ehci1_init();
355         orion5x_eth_init(&kurobox_pro_eth_data);
356         orion5x_i2c_init();
357         orion5x_sata_init(&kurobox_pro_sata_data);
358         orion5x_uart0_init();
359         orion5x_uart1_init();
360         orion5x_xor_init();
361 
362         mvebu_mbus_add_window("devbus-boot", KUROBOX_PRO_NOR_BOOT_BASE,
363                               KUROBOX_PRO_NOR_BOOT_SIZE);
364         platform_device_register(&kurobox_pro_nor_flash);
365 
366         if (machine_is_kurobox_pro()) {
367                 mvebu_mbus_add_window("devbus-cs0", KUROBOX_PRO_NAND_BASE,
368                                       KUROBOX_PRO_NAND_SIZE);
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 <rshitrit@marvell.com> */
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         .init_time      = orion5x_timer_init,
387         .fixup          = tag_fixup_mem32,
388         .restart        = orion5x_restart,
389 MACHINE_END
390 #endif
391 
392 #ifdef CONFIG_MACH_LINKSTATION_PRO
393 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
394         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
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         .init_time      = orion5x_timer_init,
401         .fixup          = tag_fixup_mem32,
402         .restart        = orion5x_restart,
403 MACHINE_END
404 #endif
405 

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