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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
104ea078 SB |
2 | /* |
3 | * Buffalo Terastation Pro II/Live Board Setup | |
4 | * | |
5 | * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> | |
104ea078 | 6 | */ |
2f8163ba | 7 | #include <linux/gpio.h> |
104ea078 SB |
8 | #include <linux/kernel.h> |
9 | #include <linux/init.h> | |
10 | #include <linux/platform_device.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/irq.h> | |
13 | #include <linux/delay.h> | |
14 | #include <linux/mtd/physmap.h> | |
15 | #include <linux/mv643xx_eth.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/serial_reg.h> | |
18 | #include <asm/mach-types.h> | |
104ea078 SB |
19 | #include <asm/mach/arch.h> |
20 | #include <asm/mach/pci.h> | |
104ea078 SB |
21 | #include "common.h" |
22 | #include "mpp.h" | |
c22c2c60 | 23 | #include "orion5x.h" |
104ea078 SB |
24 | |
25 | /***************************************************************************** | |
26 | * Terastation Pro 2/Live Info | |
27 | ****************************************************************************/ | |
28 | ||
29 | /* | |
30 | * Terastation Pro 2 hardware : | |
31 | * - Marvell 88F5281-D0 | |
32 | * - Marvell 88SX6042 SATA controller (PCI) | |
33 | * - Marvell 88E1118 Gigabit Ethernet PHY | |
34 | * - 256KB NOR flash | |
35 | * - 128MB of DDR RAM | |
36 | * - PCIe port (not equipped) | |
37 | */ | |
38 | ||
39 | /* | |
40 | * 256K NOR flash Device bus boot chip select | |
41 | */ | |
42 | ||
43 | #define TSP2_NOR_BOOT_BASE 0xf4000000 | |
44 | #define TSP2_NOR_BOOT_SIZE SZ_256K | |
45 | ||
46 | /***************************************************************************** | |
47 | * 256KB NOR Flash on BOOT Device | |
48 | ****************************************************************************/ | |
49 | ||
50 | static struct physmap_flash_data tsp2_nor_flash_data = { | |
51 | .width = 1, | |
52 | }; | |
53 | ||
54 | static struct resource tsp2_nor_flash_resource = { | |
55 | .flags = IORESOURCE_MEM, | |
56 | .start = TSP2_NOR_BOOT_BASE, | |
57 | .end = TSP2_NOR_BOOT_BASE + TSP2_NOR_BOOT_SIZE - 1, | |
58 | }; | |
59 | ||
60 | static struct platform_device tsp2_nor_flash = { | |
61 | .name = "physmap-flash", | |
62 | .id = 0, | |
63 | .dev = { | |
64 | .platform_data = &tsp2_nor_flash_data, | |
65 | }, | |
66 | .num_resources = 1, | |
67 | .resource = &tsp2_nor_flash_resource, | |
68 | }; | |
69 | ||
70 | /***************************************************************************** | |
71 | * PCI | |
72 | ****************************************************************************/ | |
73 | #define TSP2_PCI_SLOT0_OFFS 7 | |
74 | #define TSP2_PCI_SLOT0_IRQ_PIN 11 | |
75 | ||
42366666 | 76 | static void __init tsp2_pci_preinit(void) |
104ea078 SB |
77 | { |
78 | int pin; | |
79 | ||
80 | /* | |
81 | * Configure PCI GPIO IRQ pins | |
82 | */ | |
83 | pin = TSP2_PCI_SLOT0_IRQ_PIN; | |
84 | if (gpio_request(pin, "PCI Int1") == 0) { | |
85 | if (gpio_direction_input(pin) == 0) { | |
6845664a | 86 | irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW); |
104ea078 SB |
87 | } else { |
88 | printk(KERN_ERR "tsp2_pci_preinit failed " | |
89 | "to set_irq_type pin %d\n", pin); | |
90 | gpio_free(pin); | |
91 | } | |
92 | } else { | |
93 | printk(KERN_ERR "tsp2_pci_preinit failed to " | |
94 | "gpio_request %d\n", pin); | |
95 | } | |
96 | } | |
97 | ||
d5341942 | 98 | static int __init tsp2_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
104ea078 SB |
99 | { |
100 | int irq; | |
101 | ||
102 | /* | |
103 | * Check for devices with hard-wired IRQs. | |
104 | */ | |
105 | irq = orion5x_pci_map_irq(dev, slot, pin); | |
106 | if (irq != -1) | |
107 | return irq; | |
108 | ||
109 | /* | |
110 | * PCI IRQs are connected via GPIOs. | |
111 | */ | |
112 | if (slot == TSP2_PCI_SLOT0_OFFS) | |
113 | return gpio_to_irq(TSP2_PCI_SLOT0_IRQ_PIN); | |
114 | ||
115 | return -1; | |
116 | } | |
117 | ||
118 | static struct hw_pci tsp2_pci __initdata = { | |
119 | .nr_controllers = 2, | |
120 | .preinit = tsp2_pci_preinit, | |
104ea078 SB |
121 | .setup = orion5x_pci_sys_setup, |
122 | .scan = orion5x_pci_sys_scan_bus, | |
123 | .map_irq = tsp2_pci_map_irq, | |
124 | }; | |
125 | ||
126 | static int __init tsp2_pci_init(void) | |
127 | { | |
128 | if (machine_is_terastation_pro2()) | |
129 | pci_common_init(&tsp2_pci); | |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | subsys_initcall(tsp2_pci_init); | |
135 | ||
136 | /***************************************************************************** | |
137 | * Ethernet | |
138 | ****************************************************************************/ | |
139 | ||
140 | static struct mv643xx_eth_platform_data tsp2_eth_data = { | |
141 | .phy_addr = 0, | |
142 | }; | |
143 | ||
144 | /***************************************************************************** | |
145 | * RTC 5C372a on I2C bus | |
146 | ****************************************************************************/ | |
147 | ||
148 | #define TSP2_RTC_GPIO 9 | |
149 | ||
150 | static struct i2c_board_info __initdata tsp2_i2c_rtc = { | |
151 | I2C_BOARD_INFO("rs5c372a", 0x32), | |
152 | }; | |
153 | ||
154 | /***************************************************************************** | |
155 | * Terastation Pro II specific power off method via UART1-attached | |
156 | * microcontroller | |
157 | ****************************************************************************/ | |
158 | ||
159 | #define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2)) | |
160 | ||
161 | static int tsp2_miconread(unsigned char *buf, int count) | |
162 | { | |
163 | int i; | |
164 | int timeout; | |
165 | ||
166 | for (i = 0; i < count; i++) { | |
167 | timeout = 10; | |
168 | ||
169 | while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) { | |
170 | if (--timeout == 0) | |
171 | break; | |
172 | udelay(1000); | |
173 | } | |
174 | ||
175 | if (timeout == 0) | |
176 | break; | |
177 | buf[i] = readl(UART1_REG(RX)); | |
178 | } | |
179 | ||
180 | /* return read bytes */ | |
181 | return i; | |
182 | } | |
183 | ||
184 | static int tsp2_miconwrite(const unsigned char *buf, int count) | |
185 | { | |
186 | int i = 0; | |
187 | ||
188 | while (count--) { | |
189 | while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE)) | |
190 | barrier(); | |
191 | writel(buf[i++], UART1_REG(TX)); | |
192 | } | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
197 | static int tsp2_miconsend(const unsigned char *data, int count) | |
198 | { | |
199 | int i; | |
200 | unsigned char checksum = 0; | |
201 | unsigned char recv_buf[40]; | |
202 | unsigned char send_buf[40]; | |
203 | unsigned char correct_ack[3]; | |
204 | int retry = 2; | |
205 | ||
206 | /* Generate checksum */ | |
207 | for (i = 0; i < count; i++) | |
208 | checksum -= data[i]; | |
209 | ||
210 | do { | |
211 | /* Send data */ | |
212 | tsp2_miconwrite(data, count); | |
213 | ||
214 | /* send checksum */ | |
215 | tsp2_miconwrite(&checksum, 1); | |
216 | ||
217 | if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) { | |
218 | printk(KERN_ERR ">%s: receive failed.\n", __func__); | |
219 | ||
220 | /* send preamble to clear the receive buffer */ | |
221 | memset(&send_buf, 0xff, sizeof(send_buf)); | |
222 | tsp2_miconwrite(send_buf, sizeof(send_buf)); | |
223 | ||
224 | /* make dummy reads */ | |
225 | mdelay(100); | |
226 | tsp2_miconread(recv_buf, sizeof(recv_buf)); | |
227 | } else { | |
228 | /* Generate expected ack */ | |
229 | correct_ack[0] = 0x01; | |
230 | correct_ack[1] = data[1]; | |
231 | correct_ack[2] = 0x00; | |
232 | ||
233 | /* checksum Check */ | |
234 | if ((recv_buf[0] + recv_buf[1] + recv_buf[2] + | |
235 | recv_buf[3]) & 0xFF) { | |
236 | printk(KERN_ERR ">%s: Checksum Error : " | |
237 | "Received data[%02x, %02x, %02x, %02x]" | |
238 | "\n", __func__, recv_buf[0], | |
239 | recv_buf[1], recv_buf[2], recv_buf[3]); | |
240 | } else { | |
241 | /* Check Received Data */ | |
242 | if (correct_ack[0] == recv_buf[0] && | |
243 | correct_ack[1] == recv_buf[1] && | |
244 | correct_ack[2] == recv_buf[2]) { | |
245 | /* Interval for next command */ | |
246 | mdelay(10); | |
247 | ||
248 | /* Receive ACK */ | |
249 | return 0; | |
250 | } | |
251 | } | |
252 | /* Received NAK or illegal Data */ | |
253 | printk(KERN_ERR ">%s: Error : NAK or Illegal Data " | |
254 | "Received\n", __func__); | |
255 | } | |
256 | } while (retry--); | |
257 | ||
258 | /* Interval for next command */ | |
259 | mdelay(10); | |
260 | ||
261 | return -1; | |
262 | } | |
263 | ||
264 | static void tsp2_power_off(void) | |
265 | { | |
266 | const unsigned char watchdogkill[] = {0x01, 0x35, 0x00}; | |
267 | const unsigned char shutdownwait[] = {0x00, 0x0c}; | |
268 | const unsigned char poweroff[] = {0x00, 0x06}; | |
269 | /* 38400 baud divisor */ | |
270 | const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400)); | |
271 | ||
272 | pr_info("%s: triggering power-off...\n", __func__); | |
273 | ||
274 | /* hijack uart1 and reset into sane state (38400,8n1,even parity) */ | |
275 | writel(0x83, UART1_REG(LCR)); | |
276 | writel(divisor & 0xff, UART1_REG(DLL)); | |
277 | writel((divisor >> 8) & 0xff, UART1_REG(DLM)); | |
278 | writel(0x1b, UART1_REG(LCR)); | |
279 | writel(0x00, UART1_REG(IER)); | |
280 | writel(0x07, UART1_REG(FCR)); | |
281 | writel(0x00, UART1_REG(MCR)); | |
282 | ||
283 | /* Send the commands to shutdown the Terastation Pro II */ | |
284 | tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ; | |
285 | tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ; | |
286 | tsp2_miconsend(poweroff, sizeof(poweroff)); | |
287 | } | |
288 | ||
289 | /***************************************************************************** | |
290 | * General Setup | |
291 | ****************************************************************************/ | |
554cdaef AL |
292 | static unsigned int tsp2_mpp_modes[] __initdata = { |
293 | MPP0_PCIE_RST_OUTn, | |
294 | MPP1_UNUSED, | |
295 | MPP2_UNUSED, | |
296 | MPP3_UNUSED, | |
297 | MPP4_NAND, /* BOOT NAND Flash REn */ | |
298 | MPP5_NAND, /* BOOT NAND Flash WEn */ | |
299 | MPP6_NAND, /* BOOT NAND Flash HREn[0] */ | |
300 | MPP7_NAND, /* BOOT NAND Flash WEn[0] */ | |
301 | MPP8_GPIO, /* MICON int */ | |
302 | MPP9_GPIO, /* RTC int */ | |
303 | MPP10_UNUSED, | |
304 | MPP11_GPIO, /* PCI Int A */ | |
305 | MPP12_UNUSED, | |
306 | MPP13_GPIO, /* UPS on UART0 enable */ | |
307 | MPP14_GPIO, /* UPS low battery detection */ | |
308 | MPP15_UNUSED, | |
309 | MPP16_UART, /* UART1 RXD */ | |
310 | MPP17_UART, /* UART1 TXD */ | |
311 | MPP18_UART, /* UART1 CTSn */ | |
312 | MPP19_UART, /* UART1 RTSn */ | |
313 | 0, | |
104ea078 SB |
314 | }; |
315 | ||
316 | static void __init tsp2_init(void) | |
317 | { | |
318 | /* | |
319 | * Setup basic Orion functions. Need to be called early. | |
320 | */ | |
321 | orion5x_init(); | |
322 | ||
323 | orion5x_mpp_conf(tsp2_mpp_modes); | |
324 | ||
325 | /* | |
326 | * Configure peripherals. | |
327 | */ | |
4ca2c040 TP |
328 | mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET, |
329 | ORION_MBUS_DEVBUS_BOOT_ATTR, | |
330 | TSP2_NOR_BOOT_BASE, | |
331 | TSP2_NOR_BOOT_SIZE); | |
104ea078 SB |
332 | platform_device_register(&tsp2_nor_flash); |
333 | ||
334 | orion5x_ehci0_init(); | |
335 | orion5x_eth_init(&tsp2_eth_data); | |
336 | orion5x_i2c_init(); | |
337 | orion5x_uart0_init(); | |
338 | orion5x_uart1_init(); | |
339 | ||
340 | /* Get RTC IRQ and register the chip */ | |
341 | if (gpio_request(TSP2_RTC_GPIO, "rtc") == 0) { | |
342 | if (gpio_direction_input(TSP2_RTC_GPIO) == 0) | |
343 | tsp2_i2c_rtc.irq = gpio_to_irq(TSP2_RTC_GPIO); | |
344 | else | |
345 | gpio_free(TSP2_RTC_GPIO); | |
346 | } | |
347 | if (tsp2_i2c_rtc.irq == 0) | |
9d06d34b | 348 | pr_warn("tsp2_init: failed to get RTC IRQ\n"); |
104ea078 SB |
349 | i2c_register_board_info(0, &tsp2_i2c_rtc, 1); |
350 | ||
351 | /* register Terastation Pro II specific power-off method */ | |
352 | pm_power_off = tsp2_power_off; | |
353 | } | |
354 | ||
355 | MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live") | |
356 | /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */ | |
65aa1b1e | 357 | .atag_offset = 0x100, |
5cdbe5d2 | 358 | .nr_irqs = ORION5X_NR_IRQS, |
104ea078 SB |
359 | .init_machine = tsp2_init, |
360 | .map_io = orion5x_map_io, | |
4ee1f6b5 | 361 | .init_early = orion5x_init_early, |
104ea078 | 362 | .init_irq = orion5x_init_irq, |
6bb27d73 | 363 | .init_time = orion5x_timer_init, |
104ea078 | 364 | .fixup = tag_fixup_mem32, |
764cbcc2 | 365 | .restart = orion5x_restart, |
104ea078 | 366 | MACHINE_END |