Merge branch 'linus' into sched/clock
[linux-2.6] / arch / arm / mach-orion5x / kurobox_pro-setup.c
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 <asm/plat-orion/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                 pci_common_init(&kurobox_pro_pci);
151
152         return 0;
153 }
154
155 subsys_initcall(kurobox_pro_pci_init);
156
157 /*****************************************************************************
158  * Ethernet
159  ****************************************************************************/
160
161 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
162         .phy_addr       = 8,
163 };
164
165 /*****************************************************************************
166  * RTC 5C372a on I2C bus
167  ****************************************************************************/
168 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
169         I2C_BOARD_INFO("rs5c372a", 0x32),
170 };
171
172 /*****************************************************************************
173  * SATA
174  ****************************************************************************/
175 static struct mv_sata_platform_data kurobox_pro_sata_data = {
176         .n_ports        = 2,
177 };
178
179 /*****************************************************************************
180  * Kurobox Pro specific power off method via UART1-attached microcontroller
181  ****************************************************************************/
182
183 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
184
185 static int kurobox_pro_miconread(unsigned char *buf, int count)
186 {
187         int i;
188         int timeout;
189
190         for (i = 0; i < count; i++) {
191                 timeout = 10;
192
193                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
194                         if (--timeout == 0)
195                                 break;
196                         udelay(1000);
197                 }
198
199                 if (timeout == 0)
200                         break;
201                 buf[i] = readl(UART1_REG(RX));
202         }
203
204         /* return read bytes */
205         return i;
206 }
207
208 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
209 {
210         int i = 0;
211
212         while (count--) {
213                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
214                         barrier();
215                 writel(buf[i++], UART1_REG(TX));
216         }
217
218         return 0;
219 }
220
221 static int kurobox_pro_miconsend(const unsigned char *data, int count)
222 {
223         int i;
224         unsigned char checksum = 0;
225         unsigned char recv_buf[40];
226         unsigned char send_buf[40];
227         unsigned char correct_ack[3];
228         int retry = 2;
229
230         /* Generate checksum */
231         for (i = 0; i < count; i++)
232                 checksum -=  data[i];
233
234         do {
235                 /* Send data */
236                 kurobox_pro_miconwrite(data, count);
237
238                 /* send checksum */
239                 kurobox_pro_miconwrite(&checksum, 1);
240
241                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
242                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
243
244                         /* send preamble to clear the receive buffer */
245                         memset(&send_buf, 0xff, sizeof(send_buf));
246                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
247
248                         /* make dummy reads */
249                         mdelay(100);
250                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
251                 } else {
252                         /* Generate expected ack */
253                         correct_ack[0] = 0x01;
254                         correct_ack[1] = data[1];
255                         correct_ack[2] = 0x00;
256
257                         /* checksum Check */
258                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
259                              recv_buf[3]) & 0xFF) {
260                                 printk(KERN_ERR ">%s: Checksum Error : "
261                                         "Received data[%02x, %02x, %02x, %02x]"
262                                         "\n", __func__, recv_buf[0],
263                                         recv_buf[1], recv_buf[2], recv_buf[3]);
264                         } else {
265                                 /* Check Received Data */
266                                 if (correct_ack[0] == recv_buf[0] &&
267                                     correct_ack[1] == recv_buf[1] &&
268                                     correct_ack[2] == recv_buf[2]) {
269                                         /* Interval for next command */
270                                         mdelay(10);
271
272                                         /* Receive ACK */
273                                         return 0;
274                                 }
275                         }
276                         /* Received NAK or illegal Data */
277                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
278                                         "Received\n", __func__);
279                 }
280         } while (retry--);
281
282         /* Interval for next command */
283         mdelay(10);
284
285         return -1;
286 }
287
288 static void kurobox_pro_power_off(void)
289 {
290         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
291         const unsigned char shutdownwait[]      = {0x00, 0x0c};
292         const unsigned char poweroff[]          = {0x00, 0x06};
293         /* 38400 baud divisor */
294         const unsigned divisor = ((ORION5X_TCLK + (8 * 38400)) / (16 * 38400));
295
296         pr_info("%s: triggering power-off...\n", __func__);
297
298         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
299         writel(0x83, UART1_REG(LCR));
300         writel(divisor & 0xff, UART1_REG(DLL));
301         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
302         writel(0x1b, UART1_REG(LCR));
303         writel(0x00, UART1_REG(IER));
304         writel(0x07, UART1_REG(FCR));
305         writel(0x00, UART1_REG(MCR));
306
307         /* Send the commands to shutdown the Kurobox Pro */
308         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
309         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
310         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
311 }
312
313 /*****************************************************************************
314  * General Setup
315  ****************************************************************************/
316 static struct orion5x_mpp_mode kurobox_pro_mpp_modes[] __initdata = {
317         {  0, MPP_UNUSED },
318         {  1, MPP_UNUSED },
319         {  2, MPP_GPIO },               /* GPIO Micon */
320         {  3, MPP_GPIO },               /* GPIO Rtc */
321         {  4, MPP_UNUSED },
322         {  5, MPP_UNUSED },
323         {  6, MPP_NAND },               /* NAND Flash REn */
324         {  7, MPP_NAND },               /* NAND Flash WEn */
325         {  8, MPP_UNUSED },
326         {  9, MPP_UNUSED },
327         { 10, MPP_UNUSED },
328         { 11, MPP_UNUSED },
329         { 12, MPP_SATA_LED },           /* SATA 0 presence */
330         { 13, MPP_SATA_LED },           /* SATA 1 presence */
331         { 14, MPP_SATA_LED },           /* SATA 0 active */
332         { 15, MPP_SATA_LED },           /* SATA 1 active */
333         { 16, MPP_UART },               /* UART1 RXD */
334         { 17, MPP_UART },               /* UART1 TXD */
335         { 18, MPP_UART },               /* UART1 CTSn */
336         { 19, MPP_UART },               /* UART1 RTSn */
337         { -1 },
338 };
339
340 static void __init kurobox_pro_init(void)
341 {
342         /*
343          * Setup basic Orion functions. Need to be called early.
344          */
345         orion5x_init();
346
347         orion5x_mpp_conf(kurobox_pro_mpp_modes);
348
349         /*
350          * Configure peripherals.
351          */
352         orion5x_ehci0_init();
353         orion5x_ehci1_init();
354         orion5x_eth_init(&kurobox_pro_eth_data);
355         orion5x_i2c_init();
356         orion5x_sata_init(&kurobox_pro_sata_data);
357         orion5x_uart0_init();
358         orion5x_uart1_init();
359
360         orion5x_setup_dev_boot_win(KUROBOX_PRO_NOR_BOOT_BASE,
361                                    KUROBOX_PRO_NOR_BOOT_SIZE);
362         platform_device_register(&kurobox_pro_nor_flash);
363
364         if (machine_is_kurobox_pro()) {
365                 orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
366                                        KUROBOX_PRO_NAND_SIZE);
367                 platform_device_register(&kurobox_pro_nand_flash);
368         }
369
370         i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
371
372         /* register Kurobox Pro specific power-off method */
373         pm_power_off = kurobox_pro_power_off;
374 }
375
376 #ifdef CONFIG_MACH_KUROBOX_PRO
377 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
378         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
379         .phys_io        = ORION5X_REGS_PHYS_BASE,
380         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
381         .boot_params    = 0x00000100,
382         .init_machine   = kurobox_pro_init,
383         .map_io         = orion5x_map_io,
384         .init_irq       = orion5x_init_irq,
385         .timer          = &orion5x_timer,
386         .fixup          = tag_fixup_mem32,
387 MACHINE_END
388 #endif
389
390 #ifdef CONFIG_MACH_LINKSTATION_PRO
391 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
392         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
393         .phys_io        = ORION5X_REGS_PHYS_BASE,
394         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
395         .boot_params    = 0x00000100,
396         .init_machine   = kurobox_pro_init,
397         .map_io         = orion5x_map_io,
398         .init_irq       = orion5x_init_irq,
399         .timer          = &orion5x_timer,
400         .fixup          = tag_fixup_mem32,
401 MACHINE_END
402 #endif