1 /*
2 * Toshiba RBTX4939 setup routines.
3 * Based on linux/arch/mips/txx9/rbtx4938/setup.c,
4 * and RBTX49xx patch from CELF patch archive.
5 *
6 * Copyright (C) 2000-2001,2005-2007 Toshiba Corporation
7 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
8 * terms of the GNU General Public License version 2. This program is
9 * licensed "as is" without any warranty of any kind, whether express
10 * or implied.
11 */
12 #include <linux/init.h>
13 #include <linux/kernel.h>
14 #include <linux/types.h>
15 #include <linux/platform_device.h>
16 #include <linux/leds.h>
17 #include <linux/interrupt.h>
18 #include <linux/smc91x.h>
19 #include <asm/reboot.h>
20 #include <asm/txx9/generic.h>
21 #include <asm/txx9/pci.h>
22 #include <asm/txx9/rbtx4939.h>
23
rbtx4939_machine_restart(char * command)24 static void rbtx4939_machine_restart(char *command)
25 {
26 local_irq_disable();
27 writeb(1, rbtx4939_reseten_addr);
28 writeb(1, rbtx4939_softreset_addr);
29 while (1)
30 ;
31 }
32
rbtx4939_time_init(void)33 static void __init rbtx4939_time_init(void)
34 {
35 tx4939_time_init(0);
36 }
37
38 #if defined(__BIG_ENDIAN) && \
39 (defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE))
40 #define HAVE_RBTX4939_IOSWAB
41 #define IS_CE1_ADDR(addr) \
42 ((((unsigned long)(addr) - IO_BASE) & 0xfff00000) == TXX9_CE(1))
rbtx4939_ioswabw(volatile u16 * a,u16 x)43 static u16 rbtx4939_ioswabw(volatile u16 *a, u16 x)
44 {
45 return IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
46 }
rbtx4939_mem_ioswabw(volatile u16 * a,u16 x)47 static u16 rbtx4939_mem_ioswabw(volatile u16 *a, u16 x)
48 {
49 return !IS_CE1_ADDR(a) ? x : le16_to_cpu(x);
50 }
51 #endif /* __BIG_ENDIAN && CONFIG_SMC91X */
52
rbtx4939_pci_setup(void)53 static void __init rbtx4939_pci_setup(void)
54 {
55 #ifdef CONFIG_PCI
56 int extarb = !(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCIARB);
57 struct pci_controller *c = &txx9_primary_pcic;
58
59 register_pci_controller(c);
60
61 tx4939_report_pciclk();
62 tx4927_pcic_setup(tx4939_pcicptr, c, extarb);
63 if (!(__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_ATA1MODE) &&
64 (__raw_readq(&tx4939_ccfgptr->pcfg) &
65 (TX4939_PCFG_ET0MODE | TX4939_PCFG_ET1MODE))) {
66 tx4939_report_pci1clk();
67
68 /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
69 c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
70 register_pci_controller(c);
71 tx4927_pcic_setup(tx4939_pcic1ptr, c, 0);
72 }
73
74 tx4939_setup_pcierr_irq();
75 #endif /* CONFIG_PCI */
76 }
77
78 static unsigned long long default_ebccr[] __initdata = {
79 0x01c0000000007608ULL, /* 64M ROM */
80 0x017f000000007049ULL, /* 1M IOC */
81 0x0180000000408608ULL, /* ISA */
82 0,
83 };
84
rbtx4939_ebusc_setup(void)85 static void __init rbtx4939_ebusc_setup(void)
86 {
87 int i;
88 unsigned int sp;
89
90 /* use user-configured speed */
91 sp = TX4939_EBUSC_CR(0) & 0x30;
92 default_ebccr[0] |= sp;
93 default_ebccr[1] |= sp;
94 default_ebccr[2] |= sp;
95 /* initialise by myself */
96 for (i = 0; i < ARRAY_SIZE(default_ebccr); i++) {
97 if (default_ebccr[i])
98 ____raw_writeq(default_ebccr[i],
99 &tx4939_ebuscptr->cr[i]);
100 else
101 ____raw_writeq(____raw_readq(&tx4939_ebuscptr->cr[i])
102 & ~8,
103 &tx4939_ebuscptr->cr[i]);
104 }
105 }
106
rbtx4939_update_ioc_pen(void)107 static void __init rbtx4939_update_ioc_pen(void)
108 {
109 __u64 pcfg = ____raw_readq(&tx4939_ccfgptr->pcfg);
110 __u64 ccfg = ____raw_readq(&tx4939_ccfgptr->ccfg);
111 __u8 pe1 = readb(rbtx4939_pe1_addr);
112 __u8 pe2 = readb(rbtx4939_pe2_addr);
113 __u8 pe3 = readb(rbtx4939_pe3_addr);
114 if (pcfg & TX4939_PCFG_ATA0MODE)
115 pe1 |= RBTX4939_PE1_ATA(0);
116 else
117 pe1 &= ~RBTX4939_PE1_ATA(0);
118 if (pcfg & TX4939_PCFG_ATA1MODE) {
119 pe1 |= RBTX4939_PE1_ATA(1);
120 pe1 &= ~(RBTX4939_PE1_RMII(0) | RBTX4939_PE1_RMII(1));
121 } else {
122 pe1 &= ~RBTX4939_PE1_ATA(1);
123 if (pcfg & TX4939_PCFG_ET0MODE)
124 pe1 |= RBTX4939_PE1_RMII(0);
125 else
126 pe1 &= ~RBTX4939_PE1_RMII(0);
127 if (pcfg & TX4939_PCFG_ET1MODE)
128 pe1 |= RBTX4939_PE1_RMII(1);
129 else
130 pe1 &= ~RBTX4939_PE1_RMII(1);
131 }
132 if (ccfg & TX4939_CCFG_PTSEL)
133 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
134 RBTX4939_PE3_VP_S);
135 else {
136 __u64 vmode = pcfg &
137 (TX4939_PCFG_VSSMODE | TX4939_PCFG_VPSMODE);
138 if (vmode == 0)
139 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_P |
140 RBTX4939_PE3_VP_S);
141 else if (vmode == TX4939_PCFG_VPSMODE) {
142 pe3 |= RBTX4939_PE3_VP_P;
143 pe3 &= ~(RBTX4939_PE3_VP | RBTX4939_PE3_VP_S);
144 } else if (vmode == TX4939_PCFG_VSSMODE) {
145 pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_S;
146 pe3 &= ~RBTX4939_PE3_VP_P;
147 } else {
148 pe3 |= RBTX4939_PE3_VP | RBTX4939_PE3_VP_P;
149 pe3 &= ~RBTX4939_PE3_VP_S;
150 }
151 }
152 if (pcfg & TX4939_PCFG_SPIMODE) {
153 if (pcfg & TX4939_PCFG_SIO2MODE_GPIO)
154 pe2 &= ~(RBTX4939_PE2_SIO2 | RBTX4939_PE2_SIO0);
155 else {
156 if (pcfg & TX4939_PCFG_SIO2MODE_SIO2) {
157 pe2 |= RBTX4939_PE2_SIO2;
158 pe2 &= ~RBTX4939_PE2_SIO0;
159 } else {
160 pe2 |= RBTX4939_PE2_SIO0;
161 pe2 &= ~RBTX4939_PE2_SIO2;
162 }
163 }
164 if (pcfg & TX4939_PCFG_SIO3MODE)
165 pe2 |= RBTX4939_PE2_SIO3;
166 else
167 pe2 &= ~RBTX4939_PE2_SIO3;
168 pe2 &= ~RBTX4939_PE2_SPI;
169 } else {
170 pe2 |= RBTX4939_PE2_SPI;
171 pe2 &= ~(RBTX4939_PE2_SIO3 | RBTX4939_PE2_SIO2 |
172 RBTX4939_PE2_SIO0);
173 }
174 if ((pcfg & TX4939_PCFG_I2SMODE_MASK) == TX4939_PCFG_I2SMODE_GPIO)
175 pe2 |= RBTX4939_PE2_GPIO;
176 else
177 pe2 &= ~RBTX4939_PE2_GPIO;
178 writeb(pe1, rbtx4939_pe1_addr);
179 writeb(pe2, rbtx4939_pe2_addr);
180 writeb(pe3, rbtx4939_pe3_addr);
181 }
182
183 #define RBTX4939_MAX_7SEGLEDS 8
184
185 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
186 static u8 led_val[RBTX4939_MAX_7SEGLEDS];
187 struct rbtx4939_led_data {
188 struct led_classdev cdev;
189 char name[32];
190 unsigned int num;
191 };
192
193 /* Use "dot" in 7seg LEDs */
rbtx4939_led_brightness_set(struct led_classdev * led_cdev,enum led_brightness value)194 static void rbtx4939_led_brightness_set(struct led_classdev *led_cdev,
195 enum led_brightness value)
196 {
197 struct rbtx4939_led_data *led_dat =
198 container_of(led_cdev, struct rbtx4939_led_data, cdev);
199 unsigned int num = led_dat->num;
200 unsigned long flags;
201
202 local_irq_save(flags);
203 led_val[num] = (led_val[num] & 0x7f) | (value ? 0x80 : 0);
204 writeb(led_val[num], rbtx4939_7seg_addr(num / 4, num % 4));
205 local_irq_restore(flags);
206 }
207
rbtx4939_led_probe(struct platform_device * pdev)208 static int __init rbtx4939_led_probe(struct platform_device *pdev)
209 {
210 struct rbtx4939_led_data *leds_data;
211 int i;
212 static char *default_triggers[] __initdata = {
213 "heartbeat",
214 "ide-disk",
215 "nand-disk",
216 };
217
218 leds_data = kzalloc(sizeof(*leds_data) * RBTX4939_MAX_7SEGLEDS,
219 GFP_KERNEL);
220 if (!leds_data)
221 return -ENOMEM;
222 for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++) {
223 int rc;
224 struct rbtx4939_led_data *led_dat = &leds_data[i];
225
226 led_dat->num = i;
227 led_dat->cdev.brightness_set = rbtx4939_led_brightness_set;
228 sprintf(led_dat->name, "rbtx4939:amber:%u", i);
229 led_dat->cdev.name = led_dat->name;
230 if (i < ARRAY_SIZE(default_triggers))
231 led_dat->cdev.default_trigger = default_triggers[i];
232 rc = led_classdev_register(&pdev->dev, &led_dat->cdev);
233 if (rc < 0)
234 return rc;
235 led_dat->cdev.brightness_set(&led_dat->cdev, 0);
236 }
237 return 0;
238
239 }
240
241 static struct platform_driver rbtx4939_led_driver = {
242 .driver = {
243 .name = "rbtx4939-led",
244 .owner = THIS_MODULE,
245 },
246 };
247
rbtx4939_led_setup(void)248 static void __init rbtx4939_led_setup(void)
249 {
250 platform_device_register_simple("rbtx4939-led", -1, NULL, 0);
251 platform_driver_probe(&rbtx4939_led_driver, rbtx4939_led_probe);
252 }
253 #else
rbtx4939_led_setup(void)254 static inline void rbtx4939_led_setup(void)
255 {
256 }
257 #endif
258
__rbtx4939_7segled_putc(unsigned int pos,unsigned char val)259 static void __rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
260 {
261 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
262 unsigned long flags;
263 local_irq_save(flags);
264 /* bit7: reserved for LED class */
265 led_val[pos] = (led_val[pos] & 0x80) | (val & 0x7f);
266 val = led_val[pos];
267 local_irq_restore(flags);
268 #endif
269 writeb(val, rbtx4939_7seg_addr(pos / 4, pos % 4));
270 }
271
rbtx4939_7segled_putc(unsigned int pos,unsigned char val)272 static void rbtx4939_7segled_putc(unsigned int pos, unsigned char val)
273 {
274 /* convert from map_to_seg7() notation */
275 val = (val & 0x88) |
276 ((val & 0x40) >> 6) |
277 ((val & 0x20) >> 4) |
278 ((val & 0x10) >> 2) |
279 ((val & 0x04) << 2) |
280 ((val & 0x02) << 4) |
281 ((val & 0x01) << 6);
282 __rbtx4939_7segled_putc(pos, val);
283 }
284
rbtx4939_arch_init(void)285 static void __init rbtx4939_arch_init(void)
286 {
287 rbtx4939_pci_setup();
288 }
289
rbtx4939_device_init(void)290 static void __init rbtx4939_device_init(void)
291 {
292 unsigned long smc_addr = RBTX4939_ETHER_ADDR - IO_BASE;
293 struct resource smc_res[] = {
294 {
295 .start = smc_addr,
296 .end = smc_addr + 0x10 - 1,
297 .flags = IORESOURCE_MEM,
298 }, {
299 .start = RBTX4939_IRQ_ETHER,
300 /* override default irq flag defined in smc91x.h */
301 .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
302 },
303 };
304 struct smc91x_platdata smc_pdata = {
305 .flags = SMC91X_USE_16BIT,
306 };
307 struct platform_device *pdev;
308 #if defined(CONFIG_TC35815) || defined(CONFIG_TC35815_MODULE)
309 int i, j;
310 unsigned char ethaddr[2][6];
311 u8 bdipsw = readb(rbtx4939_bdipsw_addr) & 0x0f;
312
313 for (i = 0; i < 2; i++) {
314 unsigned long area = CKSEG1 + 0x1fff0000 + (i * 0x10);
315 if (bdipsw == 0)
316 memcpy(ethaddr[i], (void *)area, 6);
317 else {
318 u16 buf[3];
319 if (bdipsw & 8)
320 area -= 0x03000000;
321 else
322 area -= 0x01000000;
323 for (j = 0; j < 3; j++)
324 buf[j] = le16_to_cpup((u16 *)(area + j * 2));
325 memcpy(ethaddr[i], buf, 6);
326 }
327 }
328 tx4939_ethaddr_init(ethaddr[0], ethaddr[1]);
329 #endif
330 pdev = platform_device_alloc("smc91x", -1);
331 if (!pdev ||
332 platform_device_add_resources(pdev, smc_res, ARRAY_SIZE(smc_res)) ||
333 platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
334 platform_device_add(pdev))
335 platform_device_put(pdev);
336 rbtx4939_led_setup();
337 tx4939_wdt_init();
338 tx4939_ata_init();
339 tx4939_rtc_init();
340 }
341
rbtx4939_setup(void)342 static void __init rbtx4939_setup(void)
343 {
344 int i;
345
346 rbtx4939_ebusc_setup();
347 /* always enable ATA0 */
348 txx9_set64(&tx4939_ccfgptr->pcfg, TX4939_PCFG_ATA0MODE);
349 rbtx4939_update_ioc_pen();
350 if (txx9_master_clock == 0)
351 txx9_master_clock = 20000000;
352 tx4939_setup();
353 #ifdef HAVE_RBTX4939_IOSWAB
354 ioswabw = rbtx4939_ioswabw;
355 __mem_ioswabw = rbtx4939_mem_ioswabw;
356 #endif
357
358 _machine_restart = rbtx4939_machine_restart;
359
360 txx9_7segled_init(RBTX4939_MAX_7SEGLEDS, rbtx4939_7segled_putc);
361 for (i = 0; i < RBTX4939_MAX_7SEGLEDS; i++)
362 txx9_7segled_putc(i, '-');
363 pr_info("RBTX4939 (Rev %02x) --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
364 readb(rbtx4939_board_rev_addr), readb(rbtx4939_ioc_rev_addr),
365 readb(rbtx4939_udipsw_addr), readb(rbtx4939_bdipsw_addr));
366
367 #ifdef CONFIG_PCI
368 txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
369 txx9_board_pcibios_setup = tx4927_pcibios_setup;
370 #else
371 set_io_port_base(RBTX4939_ETHER_BASE);
372 #endif
373
374 tx4939_sio_init(TX4939_SCLK0(txx9_master_clock), 0);
375 }
376
377 struct txx9_board_vec rbtx4939_vec __initdata = {
378 .system = "Tothiba RBTX4939",
379 .prom_init = rbtx4939_prom_init,
380 .mem_setup = rbtx4939_setup,
381 .irq_setup = rbtx4939_irq_setup,
382 .time_init = rbtx4939_time_init,
383 .device_init = rbtx4939_device_init,
384 .arch_init = rbtx4939_arch_init,
385 #ifdef CONFIG_PCI
386 .pci_map_irq = tx4939_pci_map_irq,
387 #endif
388 };
389