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104ea078 SB |
1 | /* |
2 | * Buffalo Terastation Pro II/Live Board Setup | |
3 | * | |
4 | * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
2f8163ba | 11 | #include <linux/gpio.h> |
104ea078 SB |
12 | #include <linux/kernel.h> |
13 | #include <linux/init.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/pci.h> | |
16 | #include <linux/irq.h> | |
17 | #include <linux/delay.h> | |
18 | #include <linux/mtd/physmap.h> | |
19 | #include <linux/mv643xx_eth.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/serial_reg.h> | |
22 | #include <asm/mach-types.h> | |
104ea078 SB |
23 | #include <asm/mach/arch.h> |
24 | #include <asm/mach/pci.h> | |
104ea078 SB |
25 | #include "common.h" |
26 | #include "mpp.h" | |
c22c2c60 | 27 | #include "orion5x.h" |
104ea078 SB |
28 | |
29 | /***************************************************************************** | |
30 | * Terastation Pro 2/Live Info | |
31 | ****************************************************************************/ | |
32 | ||
33 | /* | |
34 | * Terastation Pro 2 hardware : | |
35 | * - Marvell 88F5281-D0 | |
36 | * - Marvell 88SX6042 SATA controller (PCI) | |
37 | * - Marvell 88E1118 Gigabit Ethernet PHY | |
38 | * - 256KB NOR flash | |
39 | * - 128MB of DDR RAM | |
40 | * - PCIe port (not equipped) | |
41 | */ | |
42 | ||
43 | /* | |
44 | * 256K NOR flash Device bus boot chip select | |
45 | */ | |
46 | ||
47 | #define TSP2_NOR_BOOT_BASE 0xf4000000 | |
48 | #define TSP2_NOR_BOOT_SIZE SZ_256K | |
49 | ||
50 | /***************************************************************************** | |
51 | * 256KB NOR Flash on BOOT Device | |
52 | ****************************************************************************/ | |
53 | ||
54 | static struct physmap_flash_data tsp2_nor_flash_data = { | |
55 | .width = 1, | |
56 | }; | |
57 | ||
58 | static struct resource tsp2_nor_flash_resource = { | |
59 | .flags = IORESOURCE_MEM, | |
60 | .start = TSP2_NOR_BOOT_BASE, | |
61 | .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1, | |
62 | }; | |
63 | ||
64 | static struct platform_device tsp2_nor_flash = { | |
65 | .name = "physmap-flash", | |
66 | .id = 0, | |
67 | .dev = { | |
68 | .platform_data = &tsp2_nor_flash_data, | |
69 | }, | |
70 | .num_resources = 1, | |
71 | .resource = &tsp2_nor_flash_resource, | |
72 | }; | |
73 | ||
74 | /***************************************************************************** | |
75 | * PCI | |
76 | ****************************************************************************/ | |
77 | #define TSP2_PCI_SLOT0_OFFS 7 | |
78 | #define TSP2_PCI_SLOT0_IRQ_PIN 11 | |
79 | ||
42366666 | 80 | static void __init tsp2_pci_preinit(void) |
104ea078 SB |
81 | { |
82 | int pin; | |
83 | ||
84 | /* | |
85 | * Configure PCI GPIO IRQ pins | |
86 | */ | |
87 | pin = TSP2_PCI_SLOT0_IRQ_PIN; | |
88 | if (gpio_request(pin, "PCI Int1") == 0) { | |
89 | if (gpio_direction_input(pin) == 0) { | |
6845664a | 90 | irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW); |
104ea078 SB |
91 | } else { |
92 | printk(KERN_ERR "tsp2_pci_preinit failed " | |
93 | "to set_irq_type pin %d\n", pin); | |
94 | gpio_free(pin); | |
95 | } | |
96 | } else { | |
97 | printk(KERN_ERR "tsp2_pci_preinit failed to " | |
98 | "gpio_request %d\n", pin); | |
99 | } | |
100 | } | |
101 | ||
d5341942 | 102 | static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
104ea078 SB |
103 | { |
104 | int irq; | |
105 | ||
106 | /* | |
107 | * Check for devices with hard-wired IRQs. | |
108 | */ | |
109 | irq = orion5x_pci_map_irq(dev, slot, pin); | |
110 | if (irq != -1) | |
111 | return irq; | |
112 | ||
113 | /* | |
114 | * PCI IRQs are connected via GPIOs. | |
115 | */ | |
116 | if (slot == TSP2_PCI_SLOT0_OFFS) | |
117 | return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN); | |
118 | ||
119 | return -1; | |
120 | } | |
121 | ||
122 | static struct hw_pci tsp2_pci __initdata = { | |
123 | .nr_controllers = 2, | |
124 | .preinit = tsp2_pci_preinit, | |
104ea078 SB |
125 | .setup = orion5x_pci_sys_setup, |
126 | .scan = orion5x_pci_sys_scan_bus, | |
127 | .map_irq = tsp2_pci_map_irq, | |
128 | }; | |
129 | ||
130 | static int __init tsp2_pci_init(void) | |
131 | { | |
132 | if (machine_is_terastation_pro2()) | |
133 | pci_common_init(&tsp2_pci); | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
138 | subsys_initcall(tsp2_pci_init); | |
139 | ||
140 | /***************************************************************************** | |
141 | * Ethernet | |
142 | ****************************************************************************/ | |
143 | ||
144 | static struct mv643xx_eth_platform_data tsp2_eth_data = { | |
145 | .phy_addr = 0, | |
146 | }; | |
147 | ||
148 | /***************************************************************************** | |
149 | * RTC 5C372a on I2C bus | |
150 | ****************************************************************************/ | |
151 | ||
152 | #define TSP2_RTC_GPIO 9 | |
153 | ||
154 | static struct i2c_board_info __initdata tsp2_i2c_rtc = { | |
155 | I2C_BOARD_INFO("rs5c372a", 0x32), | |
156 | }; | |
157 | ||
158 | /***************************************************************************** | |
159 | * Terastation Pro II specific power off method via UART1-attached | |
160 | * microcontroller | |
161 | ****************************************************************************/ | |
162 | ||
163 | #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) | |
164 | ||
165 | static int tsp2_miconread(unsigned char *buf, int count) | |
166 | { | |
167 | int i; | |
168 | int timeout; | |
169 | ||
170 | for (i = 0; i < count; i++) { | |
171 | timeout = 10; | |
172 | ||
173 | while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) { | |
174 | if (--timeout == 0) | |
175 | break; | |
176 | udelay(1000); | |
177 | } | |
178 | ||
179 | if (timeout == 0) | |
180 | break; | |
181 | buf[i] = readl(UART1_REG(RX)); | |
182 | } | |
183 | ||
184 | /* return read bytes */ | |
185 | return i; | |
186 | } | |
187 | ||
188 | static int tsp2_miconwrite(const unsigned char *buf, int count) | |
189 | { | |
190 | int i = 0; | |
191 | ||
192 | while (count--) { | |
193 | while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE)) | |
194 | barrier(); | |
195 | writel(buf[i++], UART1_REG(TX)); | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int tsp2_miconsend(const unsigned char *data, int count) | |
202 | { | |
203 | int i; | |
204 | unsigned char checksum = 0; | |
205 | unsigned char recv_buf[40]; | |
206 | unsigned char send_buf[40]; | |
207 | unsigned char correct_ack[3]; | |
208 | int retry = 2; | |
209 | ||
210 | /* Generate checksum */ | |
211 | for (i = 0; i < count; i++) | |
212 | checksum -= data[i]; | |
213 | ||
214 | do { | |
215 | /* Send data */ | |
216 | tsp2_miconwrite(data, count); | |
217 | ||
218 | /* send checksum */ | |
219 | tsp2_miconwrite(&checksum, 1); | |
220 | ||
221 | if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) { | |
222 | printk(KERN_ERR ">%s: receive failed.\n", __func__); | |
223 | ||
224 | /* send preamble to clear the receive buffer */ | |
225 | memset(&send_buf, 0xff, sizeof(send_buf)); | |
226 | tsp2_miconwrite(send_buf, sizeof(send_buf)); | |
227 | ||
228 | /* make dummy reads */ | |
229 | mdelay(100); | |
230 | tsp2_miconread(recv_buf, sizeof(recv_buf)); | |
231 | } else { | |
232 | /* Generate expected ack */ | |
233 | correct_ack[0] = 0x01; | |
234 | correct_ack[1] = data[1]; | |
235 | correct_ack[2] = 0x00; | |
236 | ||
237 | /* checksum Check */ | |
238 | if ((recv_buf[0] + recv_buf[1] + recv_buf[2] + | |
239 | recv_buf[3]) & 0xFF) { | |
240 | printk(KERN_ERR ">%s: Checksum Error : " | |
241 | "Received data[%02x, %02x, %02x, %02x]" | |
242 | "\n", __func__, recv_buf[0], | |
243 | recv_buf[1], recv_buf[2], recv_buf[3]); | |
244 | } else { | |
245 | /* Check Received Data */ | |
246 | if (correct_ack[0] == recv_buf[0] && | |
247 | correct_ack[1] == recv_buf[1] && | |
248 | correct_ack[2] == recv_buf[2]) { | |
249 | /* Interval for next command */ | |
250 | mdelay(10); | |
251 | ||
252 | /* Receive ACK */ | |
253 | return 0; | |
254 | } | |
255 | } | |
256 | /* Received NAK or illegal Data */ | |
257 | printk(KERN_ERR ">%s: Error : NAK or Illegal Data " | |
258 | "Received\n", __func__); | |
259 | } | |
260 | } while (retry--); | |
261 | ||
262 | /* Interval for next command */ | |
263 | mdelay(10); | |
264 | ||
265 | return -1; | |
266 | } | |
267 | ||
268 | static void tsp2_power_off(void) | |
269 | { | |
270 | const unsigned char watchdogkill[] = {0x01, 0x35, 0x00}; | |
271 | const unsigned char shutdownwait[] = {0x00, 0x0c}; | |
272 | const unsigned char poweroff[] = {0x00, 0x06}; | |
273 | /* 38400 baud divisor */ | |
274 | const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400)); | |
275 | ||
276 | pr_info("%s: triggering power-off...\n", __func__); | |
277 | ||
278 | /* hijack uart1 and reset into sane state (38400,8n1,even parity) */ | |
279 | writel(0x83, UART1_REG(LCR)); | |
280 | writel(divisor & 0xff, UART1_REG(DLL)); | |
281 | writel((divisor >> 8) & 0xff, UART1_REG(DLM)); | |
282 | writel(0x1b, UART1_REG(LCR)); | |
283 | writel(0x00, UART1_REG(IER)); | |
284 | writel(0x07, UART1_REG(FCR)); | |
285 | writel(0x00, UART1_REG(MCR)); | |
286 | ||
287 | /* Send the commands to shutdown the Terastation Pro II */ | |
288 | tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ; | |
289 | tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ; | |
290 | tsp2_miconsend(poweroff, sizeof(poweroff)); | |
291 | } | |
292 | ||
293 | /***************************************************************************** | |
294 | * General Setup | |
295 | ****************************************************************************/ | |
554cdaef AL |
296 | static unsigned int tsp2_mpp_modes[] __initdata = { |
297 | MPP0_PCIE_RST_OUTn, | |
298 | MPP1_UNUSED, | |
299 | MPP2_UNUSED, | |
300 | MPP3_UNUSED, | |
301 | MPP4_NAND, /* BOOT NAND Flash REn */ | |
302 | MPP5_NAND, /* BOOT NAND Flash WEn */ | |
303 | MPP6_NAND, /* BOOT NAND Flash HREn[0] */ | |
304 | MPP7_NAND, /* BOOT NAND Flash WEn[0] */ | |
305 | MPP8_GPIO, /* MICON int */ | |
306 | MPP9_GPIO, /* RTC int */ | |
307 | MPP10_UNUSED, | |
308 | MPP11_GPIO, /* PCI Int A */ | |
309 | MPP12_UNUSED, | |
310 | MPP13_GPIO, /* UPS on UART0 enable */ | |
311 | MPP14_GPIO, /* UPS low battery detection */ | |
312 | MPP15_UNUSED, | |
313 | MPP16_UART, /* UART1 RXD */ | |
314 | MPP17_UART, /* UART1 TXD */ | |
315 | MPP18_UART, /* UART1 CTSn */ | |
316 | MPP19_UART, /* UART1 RTSn */ | |
317 | 0, | |
104ea078 SB |
318 | }; |
319 | ||
320 | static void __init tsp2_init(void) | |
321 | { | |
322 | /* | |
323 | * Setup basic Orion functions. Need to be called early. | |
324 | */ | |
325 | orion5x_init(); | |
326 | ||
327 | orion5x_mpp_conf(tsp2_mpp_modes); | |
328 | ||
329 | /* | |
330 | * Configure peripherals. | |
331 | */ | |
4ca2c040 TP |
332 | mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET, |
333 | ORION_MBUS_DEVBUS_BOOT_ATTR, | |
334 | TSP2_NOR_BOOT_BASE, | |
335 | TSP2_NOR_BOOT_SIZE); | |
104ea078 SB |
336 | platform_device_register(&tsp2_nor_flash); |
337 | ||
338 | orion5x_ehci0_init(); | |
339 | orion5x_eth_init(&tsp2_eth_data); | |
340 | orion5x_i2c_init(); | |
341 | orion5x_uart0_init(); | |
342 | orion5x_uart1_init(); | |
343 | ||
344 | /* Get RTC IRQ and register the chip */ | |
345 | if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) { | |
346 | if (gpio_direction_input(TSP2_RTC_GPIO) == 0) | |
347 | tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO); | |
348 | else | |
349 | gpio_free(TSP2_RTC_GPIO); | |
350 | } | |
351 | if (tsp2_i2c_rtc.irq == 0) | |
9d06d34b | 352 | pr_warn("tsp2_init: failed to get RTC IRQ\n"); |
104ea078 SB |
353 | i2c_register_board_info(0, &tsp2_i2c_rtc, 1); |
354 | ||
355 | /* register Terastation Pro II specific power-off method */ | |
356 | pm_power_off = tsp2_power_off; | |
357 | } | |
358 | ||
359 | MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live") | |
360 | /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */ | |
65aa1b1e | 361 | .atag_offset = 0x100, |
5cdbe5d2 | 362 | .nr_irqs = ORION5X_NR_IRQS, |
104ea078 SB |
363 | .init_machine = tsp2_init, |
364 | .map_io = orion5x_map_io, | |
4ee1f6b5 | 365 | .init_early = orion5x_init_early, |
104ea078 | 366 | .init_irq = orion5x_init_irq, |
6bb27d73 | 367 | .init_time = orion5x_timer_init, |
104ea078 | 368 | .fixup = tag_fixup_mem32, |
764cbcc2 | 369 | .restart = orion5x_restart, |
104ea078 | 370 | MACHINE_END |