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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 
 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/gpio.h>
 25 #include <asm/mach/arch.h>
 26 #include <asm/mach/pci.h>
 27 #include <mach/orion5x.h>
 28 #include <plat/orion_nand.h>
 29 #include "common.h"
 30 #include "mpp.h"
 31 
 32 /*****************************************************************************
 33  * KUROBOX-PRO Info
 34  ****************************************************************************/
 35 
 36 /*
 37  * 256K NOR flash Device bus boot chip select
 38  */
 39 
 40 #define KUROBOX_PRO_NOR_BOOT_BASE       0xf4000000
 41 #define KUROBOX_PRO_NOR_BOOT_SIZE       SZ_256K
 42 
 43 /*
 44  * 256M NAND flash on Device bus chip select 1
 45  */
 46 
 47 #define KUROBOX_PRO_NAND_BASE           0xfc000000
 48 #define KUROBOX_PRO_NAND_SIZE           SZ_2M
 49 
 50 /*****************************************************************************
 51  * 256MB NAND Flash on Device bus CS0
 52  ****************************************************************************/
 53 
 54 static struct mtd_partition kurobox_pro_nand_parts[] = {
 55         {
 56                 .name   = "uImage",
 57                 .offset = 0,
 58                 .size   = SZ_4M,
 59         }, {
 60                 .name   = "rootfs",
 61                 .offset = SZ_4M,
 62                 .size   = SZ_64M,
 63         }, {
 64                 .name   = "extra",
 65                 .offset = SZ_4M + SZ_64M,
 66                 .size   = SZ_256M - (SZ_4M + SZ_64M),
 67         },
 68 };
 69 
 70 static struct resource kurobox_pro_nand_resource = {
 71         .flags          = IORESOURCE_MEM,
 72         .start          = KUROBOX_PRO_NAND_BASE,
 73         .end            = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
 74 };
 75 
 76 static struct orion_nand_data kurobox_pro_nand_data = {
 77         .parts          = kurobox_pro_nand_parts,
 78         .nr_parts       = ARRAY_SIZE(kurobox_pro_nand_parts),
 79         .cle            = 0,
 80         .ale            = 1,
 81         .width          = 8,
 82 };
 83 
 84 static struct platform_device kurobox_pro_nand_flash = {
 85         .name           = "orion_nand",
 86         .id             = -1,
 87         .dev            = {
 88                 .platform_data  = &kurobox_pro_nand_data,
 89         },
 90         .resource       = &kurobox_pro_nand_resource,
 91         .num_resources  = 1,
 92 };
 93 
 94 /*****************************************************************************
 95  * 256KB NOR Flash on BOOT Device
 96  ****************************************************************************/
 97 
 98 static struct physmap_flash_data kurobox_pro_nor_flash_data = {
 99         .width          = 1,
100 };
101 
102 static struct resource kurobox_pro_nor_flash_resource = {
103         .flags                  = IORESOURCE_MEM,
104         .start                  = KUROBOX_PRO_NOR_BOOT_BASE,
105         .end                    = KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
106 };
107 
108 static struct platform_device kurobox_pro_nor_flash = {
109         .name                   = "physmap-flash",
110         .id                     = 0,
111         .dev            = {
112                 .platform_data  = &kurobox_pro_nor_flash_data,
113         },
114         .num_resources          = 1,
115         .resource               = &kurobox_pro_nor_flash_resource,
116 };
117 
118 /*****************************************************************************
119  * PCI
120  ****************************************************************************/
121 
122 static int __init kurobox_pro_pci_map_irq(struct pci_dev *dev, u8 slot, 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         .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 
147 static 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 
157 subsys_initcall(kurobox_pro_pci_init);
158 
159 /*****************************************************************************
160  * Ethernet
161  ****************************************************************************/
162 
163 static 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  ****************************************************************************/
170 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
171         I2C_BOARD_INFO("rs5c372a", 0x32),
172 };
173 
174 /*****************************************************************************
175  * SATA
176  ****************************************************************************/
177 static 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 
187 static 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 
210 static 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 
223 static 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 
290 static 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  ****************************************************************************/
318 static struct orion5x_mpp_mode kurobox_pro_mpp_modes[] __initdata = {
319         {  0, MPP_UNUSED },
320         {  1, MPP_UNUSED },
321         {  2, MPP_GPIO },               /* GPIO Micon */
322         {  3, MPP_GPIO },               /* GPIO Rtc */
323         {  4, MPP_UNUSED },
324         {  5, MPP_UNUSED },
325         {  6, MPP_NAND },               /* NAND Flash REn */
326         {  7, MPP_NAND },               /* NAND Flash WEn */
327         {  8, MPP_UNUSED },
328         {  9, MPP_UNUSED },
329         { 10, MPP_UNUSED },
330         { 11, MPP_UNUSED },
331         { 12, MPP_SATA_LED },           /* SATA 0 presence */
332         { 13, MPP_SATA_LED },           /* SATA 1 presence */
333         { 14, MPP_SATA_LED },           /* SATA 0 active */
334         { 15, MPP_SATA_LED },           /* SATA 1 active */
335         { 16, MPP_UART },               /* UART1 RXD */
336         { 17, MPP_UART },               /* UART1 TXD */
337         { 18, MPP_UART },               /* UART1 CTSn */
338         { 19, MPP_UART },               /* UART1 RTSn */
339         { -1 },
340 };
341 
342 static 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
380 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
381         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
382         .phys_io        = ORION5X_REGS_PHYS_BASE,
383         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
384         .boot_params    = 0x00000100,
385         .init_machine   = kurobox_pro_init,
386         .map_io         = orion5x_map_io,
387         .init_irq       = orion5x_init_irq,
388         .timer          = &orion5x_timer,
389         .fixup          = tag_fixup_mem32,
390 MACHINE_END
391 #endif
392 
393 #ifdef CONFIG_MACH_LINKSTATION_PRO
394 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
395         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
396         .phys_io        = ORION5X_REGS_PHYS_BASE,
397         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
398         .boot_params    = 0x00000100,
399         .init_machine   = kurobox_pro_init,
400         .map_io         = orion5x_map_io,
401         .init_irq       = orion5x_init_irq,
402         .timer          = &orion5x_timer,
403         .fixup          = tag_fixup_mem32,
404 MACHINE_END
405 #endif
406 

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