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ia64/kvm: compilation fix. export account_system_vtime.
[pv_ops_mirror.git] / arch / ppc / platforms / radstone_ppc7d.c
blobf1dee1e878096b2a80f80c36cfe64fcf91a0606b
1 /*
2 * Board setup routines for the Radstone PPC7D boards.
3 *
4 * Author: James Chapman <jchapman@katalix.com>
5 *
6 * Based on code done by Rabeeh Khoury - rabeeh@galileo.co.il
7 * Based on code done by - Mark A. Greer <mgreer@mvista.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15 /* Radstone PPC7D boards are rugged VME boards with PPC 7447A CPUs,
16 * Discovery-II, dual gigabit ethernet, dual PMC, USB, keyboard/mouse,
17 * 4 serial ports, 2 high speed serial ports (MPSCs) and optional
18 * SCSI / VGA.
19 */
20
21 #include <linux/stddef.h>
22 #include <linux/kernel.h>
23 #include <linux/init.h>
24 #include <linux/errno.h>
25 #include <linux/reboot.h>
26 #include <linux/pci.h>
27 #include <linux/kdev_t.h>
28 #include <linux/major.h>
29 #include <linux/initrd.h>
30 #include <linux/console.h>
31 #include <linux/delay.h>
32 #include <linux/seq_file.h>
33 #include <linux/root_dev.h>
34 #include <linux/serial.h>
35 #include <linux/tty.h> /* for linux/serial_core.h */
36 #include <linux/serial_core.h>
37 #include <linux/serial_8250.h>
38 #include <linux/mv643xx.h>
39 #include <linux/netdevice.h>
40 #include <linux/platform_device.h>
41
42 #include <asm/system.h>
43 #include <asm/pgtable.h>
44 #include <asm/page.h>
45 #include <asm/time.h>
46 #include <asm/dma.h>
47 #include <asm/io.h>
48 #include <asm/machdep.h>
49 #include <asm/prom.h>
50 #include <asm/smp.h>
51 #include <asm/vga.h>
52 #include <asm/open_pic.h>
53 #include <asm/i8259.h>
54 #include <asm/todc.h>
55 #include <asm/bootinfo.h>
56 #include <asm/mpc10x.h>
57 #include <asm/pci-bridge.h>
58 #include <asm/mv64x60.h>
59
60 #include "radstone_ppc7d.h"
61
62 #undef DEBUG
63
64 #define PPC7D_RST_PIN 17 /* GPP17 */
65
66 extern u32 mv64360_irq_base;
67 extern spinlock_t rtc_lock;
68
69 static struct mv64x60_handle bh;
70 static int ppc7d_has_alma;
71
72 extern void gen550_progress(char *, unsigned short);
73 extern void gen550_init(int, struct uart_port *);
74
75 /* FIXME - move to h file */
76 extern int ds1337_do_command(int id, int cmd, void *arg);
77 #define DS1337_GET_DATE 0
78 #define DS1337_SET_DATE 1
79
80 /* residual data */
81 unsigned char __res[sizeof(bd_t)];
82
83 /*****************************************************************************
84 * Serial port code
85 *****************************************************************************/
86
87 #if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
88 static void __init ppc7d_early_serial_map(void)
89 {
90 #if defined(CONFIG_SERIAL_MPSC_CONSOLE)
91 mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
92 #elif defined(CONFIG_SERIAL_8250)
93 struct uart_port serial_req;
94
95 /* Setup serial port access */
96 memset(&serial_req, 0, sizeof(serial_req));
97 serial_req.uartclk = UART_CLK;
98 serial_req.irq = 4;
99 serial_req.flags = STD_COM_FLAGS;
100 serial_req.iotype = UPIO_MEM;
101 serial_req.membase = (u_char *) PPC7D_SERIAL_0;
102
103 gen550_init(0, &serial_req);
104 if (early_serial_setup(&serial_req) != 0)
105 printk(KERN_ERR "Early serial init of port 0 failed\n");
106
107 /* Assume early_serial_setup() doesn't modify serial_req */
108 serial_req.line = 1;
109 serial_req.irq = 3;
110 serial_req.membase = (u_char *) PPC7D_SERIAL_1;
111
112 gen550_init(1, &serial_req);
113 if (early_serial_setup(&serial_req) != 0)
114 printk(KERN_ERR "Early serial init of port 1 failed\n");
115 #else
116 #error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
117 #endif
118 }
119 #endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
120
121 /*****************************************************************************
122 * Low-level board support code
123 *****************************************************************************/
124
125 static unsigned long __init ppc7d_find_end_of_memory(void)
126 {
127 bd_t *bp = (bd_t *) __res;
128
129 if (bp->bi_memsize)
130 return bp->bi_memsize;
131
132 return (256 * 1024 * 1024);
133 }
134
135 static void __init ppc7d_map_io(void)
136 {
137 /* remove temporary mapping */
138 mtspr(SPRN_DBAT3U, 0x00000000);
139 mtspr(SPRN_DBAT3L, 0x00000000);
140
141 io_block_mapping(0xe8000000, 0xe8000000, 0x08000000, _PAGE_IO);
142 io_block_mapping(0xfe000000, 0xfe000000, 0x02000000, _PAGE_IO);
143 }
144
145 static void ppc7d_restart(char *cmd)
146 {
147 u32 data;
148
149 /* Disable GPP17 interrupt */
150 data = mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
151 data &= ~(1 << PPC7D_RST_PIN);
152 mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, data);
153
154 /* Configure MPP17 as GPP */
155 data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
156 data &= ~(0x0000000f << 4);
157 mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
158
159 /* Enable pin GPP17 for output */
160 data = mv64x60_read(&bh, MV64x60_GPP_IO_CNTL);
161 data |= (1 << PPC7D_RST_PIN);
162 mv64x60_write(&bh, MV64x60_GPP_IO_CNTL, data);
163
164 /* Toggle GPP9 pin to reset the board */
165 mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, 1 << PPC7D_RST_PIN);
166 mv64x60_write(&bh, MV64x60_GPP_VALUE_SET, 1 << PPC7D_RST_PIN);
167
168 for (;;) ; /* Spin until reset happens */
169 /* NOTREACHED */
170 }
171
172 static void ppc7d_power_off(void)
173 {
174 u32 data;
175
176 local_irq_disable();
177
178 /* Ensure that internal MV643XX watchdog is disabled.
179 * The Disco watchdog uses MPP17 on this hardware.
180 */
181 data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
182 data &= ~(0x0000000f << 4);
183 mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
184
185 data = mv64x60_read(&bh, MV64x60_WDT_WDC);
186 if (data & 0x80000000) {
187 mv64x60_write(&bh, MV64x60_WDT_WDC, 1 << 24);
188 mv64x60_write(&bh, MV64x60_WDT_WDC, 2 << 24);
189 }
190
191 for (;;) ; /* No way to shut power off with software */
192 /* NOTREACHED */
193 }
194
195 static void ppc7d_halt(void)
196 {
197 ppc7d_power_off();
198 /* NOTREACHED */
199 }
200
201 static unsigned long ppc7d_led_no_pulse;
202
203 static int __init ppc7d_led_pulse_disable(char *str)
204 {
205 ppc7d_led_no_pulse = 1;
206 return 1;
207 }
208
209 /* This kernel option disables the heartbeat pulsing of a board LED */
210 __setup("ledoff", ppc7d_led_pulse_disable);
211
212 static void ppc7d_heartbeat(void)
213 {
214 u32 data32;
215 u8 data8;
216 static int max706_wdog = 0;
217
218 /* Unfortunately we can't access the LED control registers
219 * during early init because they're on the CPLD which is the
220 * other side of a PCI bridge which goes unreachable during
221 * PCI scan. So write the LEDs only if the MV64360 watchdog is
222 * enabled (i.e. userspace apps are running so kernel is up)..
223 */
224 data32 = mv64x60_read(&bh, MV64x60_WDT_WDC);
225 if (data32 & 0x80000000) {
226 /* Enable MAX706 watchdog if not done already */
227 if (!max706_wdog) {
228 outb(3, PPC7D_CPLD_RESET);
229 max706_wdog = 1;
230 }
231
232 /* Hit the MAX706 watchdog */
233 outb(0, PPC7D_CPLD_WATCHDOG_TRIG);
234
235 /* Pulse LED DS219 if not disabled */
236 if (!ppc7d_led_no_pulse) {
237 static int led_on = 0;
238
239 data8 = inb(PPC7D_CPLD_LEDS);
240 if (led_on)
241 data8 &= ~PPC7D_CPLD_LEDS_DS219_MASK;
242 else
243 data8 |= PPC7D_CPLD_LEDS_DS219_MASK;
244
245 outb(data8, PPC7D_CPLD_LEDS);
246 led_on = !led_on;
247 }
248 }
249 ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
250 }
251
252 static int ppc7d_show_cpuinfo(struct seq_file *m)
253 {
254 u8 val;
255 u8 val1, val2;
256 static int flash_sizes[4] = { 64, 32, 0, 16 };
257 static int flash_banks[4] = { 4, 3, 2, 1 };
258 static int sdram_bank_sizes[4] = { 128, 256, 512, 1 };
259 int sdram_num_banks = 2;
260 static char *pci_modes[] = { "PCI33", "PCI66",
261 "Unknown", "Unknown",
262 "PCIX33", "PCIX66",
263 "PCIX100", "PCIX133"
264 };
265
266 seq_printf(m, "vendor\t\t: Radstone Technology\n");
267 seq_printf(m, "machine\t\t: PPC7D\n");
268
269 val = inb(PPC7D_CPLD_BOARD_REVISION);
270 val1 = (val & PPC7D_CPLD_BOARD_REVISION_NUMBER_MASK) >> 5;
271 val2 = (val & PPC7D_CPLD_BOARD_REVISION_LETTER_MASK);
272 seq_printf(m, "revision\t: %hd%c%c\n",
273 val1,
274 (val2 <= 0x18) ? 'A' + val2 : 'Y',
275 (val2 > 0x18) ? 'A' + (val2 - 0x19) : ' ');
276
277 val = inb(PPC7D_CPLD_MOTHERBOARD_TYPE);
278 val1 = val & PPC7D_CPLD_MB_TYPE_PLL_MASK;
279 val2 = val & (PPC7D_CPLD_MB_TYPE_ECC_FITTED_MASK |
280 PPC7D_CPLD_MB_TYPE_ECC_ENABLE_MASK);
281 seq_printf(m, "bus speed\t: %dMHz\n",
282 (val1 == PPC7D_CPLD_MB_TYPE_PLL_133) ? 133 :
283 (val1 == PPC7D_CPLD_MB_TYPE_PLL_100) ? 100 :
284 (val1 == PPC7D_CPLD_MB_TYPE_PLL_64) ? 64 : 0);
285
286 val = inb(PPC7D_CPLD_MEM_CONFIG);
287 if (val & PPC7D_CPLD_SDRAM_BANK_NUM_MASK) sdram_num_banks--;
288
289 val = inb(PPC7D_CPLD_MEM_CONFIG_EXTEND);
290 val1 = (val & PPC7D_CPLD_SDRAM_BANK_SIZE_MASK) >> 6;
291 seq_printf(m, "SDRAM\t\t: %d banks of %d%c, total %d%c",
292 sdram_num_banks,
293 sdram_bank_sizes[val1],
294 (sdram_bank_sizes[val1] < 128) ? 'G' : 'M',
295 sdram_num_banks * sdram_bank_sizes[val1],
296 (sdram_bank_sizes[val1] < 128) ? 'G' : 'M');
297 if (val2 & PPC7D_CPLD_MB_TYPE_ECC_FITTED_MASK) {
298 seq_printf(m, " [ECC %sabled]",
299 (val2 & PPC7D_CPLD_MB_TYPE_ECC_ENABLE_MASK) ? "en" :
300 "dis");
301 }
302 seq_printf(m, "\n");
303
304 val1 = (val & PPC7D_CPLD_FLASH_DEV_SIZE_MASK);
305 val2 = (val & PPC7D_CPLD_FLASH_BANK_NUM_MASK) >> 2;
306 seq_printf(m, "FLASH\t\t: %d banks of %dM, total %dM\n",
307 flash_banks[val2], flash_sizes[val1],
308 flash_banks[val2] * flash_sizes[val1]);
309
310 val = inb(PPC7D_CPLD_FLASH_WRITE_CNTL);
311 val1 = inb(PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
312 seq_printf(m, " write links\t: %s%s%s%s\n",
313 (val & PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK) ? "WRITE " : "",
314 (val & PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK) ? "BOOT " : "",
315 (val & PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK) ? "USER " : "",
316 (val & (PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK |
317 PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK |
318 PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK)) ==
319 0 ? "NONE" : "");
320 seq_printf(m, " write sector h/w enables: %s%s%s%s%s\n",
321 (val & PPD7D_CPLD_FLASH_CNTL_RECO_WR_MASK) ? "RECOVERY " :
322 "",
323 (val & PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK) ? "BOOT " : "",
324 (val & PPD7D_CPLD_FLASH_CNTL_USER_WR_MASK) ? "USER " : "",
325 (val1 & PPC7D_CPLD_FLASH_CNTL_NVRAM_PROT_MASK) ? "NVRAM " :
326 "",
327 (((val &
328 (PPD7D_CPLD_FLASH_CNTL_RECO_WR_MASK |
329 PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK |
330 PPD7D_CPLD_FLASH_CNTL_BOOT_WR_MASK)) == 0)
331 && ((val1 & PPC7D_CPLD_FLASH_CNTL_NVRAM_PROT_MASK) ==
332 0)) ? "NONE" : "");
333 val1 =
334 inb(PPC7D_CPLD_SW_FLASH_WRITE_PROTECT) &
335 (PPC7D_CPLD_SW_FLASH_WRPROT_SYSBOOT_MASK |
336 PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK);
337 seq_printf(m, " software sector enables: %s%s%s\n",
338 (val1 & PPC7D_CPLD_SW_FLASH_WRPROT_SYSBOOT_MASK) ? "SYSBOOT "
339 : "",
340 (val1 & PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK) ? "USER " : "",
341 (val1 == 0) ? "NONE " : "");
342
343 seq_printf(m, "Boot options\t: %s%s%s%s\n",
344 (val & PPC7D_CPLD_FLASH_CNTL_ALTBOOT_LINK_MASK) ?
345 "ALTERNATE " : "",
346 (val & PPC7D_CPLD_FLASH_CNTL_VMEBOOT_LINK_MASK) ? "VME " :
347 "",
348 (val & PPC7D_CPLD_FLASH_CNTL_RECBOOT_LINK_MASK) ? "RECOVERY "
349 : "",
350 ((val &
351 (PPC7D_CPLD_FLASH_CNTL_ALTBOOT_LINK_MASK |
352 PPC7D_CPLD_FLASH_CNTL_VMEBOOT_LINK_MASK |
353 PPC7D_CPLD_FLASH_CNTL_RECBOOT_LINK_MASK)) ==
354 0) ? "NONE" : "");
355
356 val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_1);
357 seq_printf(m, "Fitted modules\t: %s%s%s%s\n",
358 (val & PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK) ? "" : "PMC1 ",
359 (val & PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK) ? "" : "PMC2 ",
360 (val & PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK) ? "AFIX " : "",
361 ((val & (PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK |
362 PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK |
363 PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK)) ==
364 (PPC7D_CPLD_EQPT_PRES_1_PMC1_MASK |
365 PPC7D_CPLD_EQPT_PRES_1_PMC2_MASK)) ? "NONE" : "");
366
367 if (val & PPC7D_CPLD_EQPT_PRES_1_AFIX_MASK) {
368 static const char *ids[] = {
369 "unknown",
370 "1553 (Dual Channel)",
371 "1553 (Single Channel)",
372 "8-bit SCSI + VGA",
373 "16-bit SCSI + VGA",
374 "1553 (Single Channel with sideband)",
375 "1553 (Dual Channel with sideband)",
376 NULL
377 };
378 u8 id = __raw_readb((void *)PPC7D_AFIX_REG_BASE + 0x03);
379 seq_printf(m, "AFIX module\t: 0x%hx [%s]\n", id,
380 id < 7 ? ids[id] : "unknown");
381 }
382
383 val = inb(PPC7D_CPLD_PCI_CONFIG);
384 val1 = (val & PPC7D_CPLD_PCI_CONFIG_PCI0_MASK) >> 4;
385 val2 = (val & PPC7D_CPLD_PCI_CONFIG_PCI1_MASK);
386 seq_printf(m, "PCI#0\t\t: %s\nPCI#1\t\t: %s\n",
387 pci_modes[val1], pci_modes[val2]);
388
389 val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_2);
390 seq_printf(m, "PMC1\t\t: %s\nPMC2\t\t: %s\n",
391 (val & PPC7D_CPLD_EQPT_PRES_3_PMC1_V_MASK) ? "3.3v" : "5v",
392 (val & PPC7D_CPLD_EQPT_PRES_3_PMC2_V_MASK) ? "3.3v" : "5v");
393 seq_printf(m, "PMC power source: %s\n",
394 (val & PPC7D_CPLD_EQPT_PRES_3_PMC_POWER_MASK) ? "VME" :
395 "internal");
396
397 val = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_4);
398 val2 = inb(PPC7D_CPLD_EQUIPMENT_PRESENT_2);
399 seq_printf(m, "Fit options\t: %s%s%s%s%s%s%s\n",
400 (val & PPC7D_CPLD_EQPT_PRES_4_LPT_MASK) ? "LPT " : "",
401 (val & PPC7D_CPLD_EQPT_PRES_4_PS2_FITTED) ? "PS2 " : "",
402 (val & PPC7D_CPLD_EQPT_PRES_4_USB2_FITTED) ? "USB2 " : "",
403 (val2 & PPC7D_CPLD_EQPT_PRES_2_UNIVERSE_MASK) ? "VME " : "",
404 (val2 & PPC7D_CPLD_EQPT_PRES_2_COM36_MASK) ? "COM3-6 " : "",
405 (val2 & PPC7D_CPLD_EQPT_PRES_2_GIGE_MASK) ? "eth0 " : "",
406 (val2 & PPC7D_CPLD_EQPT_PRES_2_DUALGIGE_MASK) ? "eth1 " :
407 "");
408
409 val = inb(PPC7D_CPLD_ID_LINK);
410 val1 = val & (PPC7D_CPLD_ID_LINK_E6_MASK |
411 PPC7D_CPLD_ID_LINK_E7_MASK |
412 PPC7D_CPLD_ID_LINK_E12_MASK |
413 PPC7D_CPLD_ID_LINK_E13_MASK);
414
415 val = inb(PPC7D_CPLD_FLASH_WRITE_CNTL) &
416 (PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK |
417 PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK |
418 PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK);
419
420 seq_printf(m, "Board links present: %s%s%s%s%s%s%s%s\n",
421 (val1 & PPC7D_CPLD_ID_LINK_E6_MASK) ? "E6 " : "",
422 (val1 & PPC7D_CPLD_ID_LINK_E7_MASK) ? "E7 " : "",
423 (val & PPD7D_CPLD_FLASH_CNTL_WR_LINK_MASK) ? "E9 " : "",
424 (val & PPD7D_CPLD_FLASH_CNTL_BOOT_LINK_MASK) ? "E10 " : "",
425 (val & PPD7D_CPLD_FLASH_CNTL_USER_LINK_MASK) ? "E11 " : "",
426 (val1 & PPC7D_CPLD_ID_LINK_E12_MASK) ? "E12 " : "",
427 (val1 & PPC7D_CPLD_ID_LINK_E13_MASK) ? "E13 " : "",
428 ((val == 0) && (val1 == 0)) ? "NONE" : "");
429
430 val = inb(PPC7D_CPLD_WDOG_RESETSW_MASK);
431 seq_printf(m, "Front panel reset switch: %sabled\n",
432 (val & PPC7D_CPLD_WDOG_RESETSW_MASK) ? "dis" : "en");
433
434 return 0;
435 }
436
437 static void __init ppc7d_calibrate_decr(void)
438 {
439 ulong freq;
440
441 freq = 100000000 / 4;
442
443 pr_debug("time_init: decrementer frequency = %lu.%.6lu MHz\n",
444 freq / 1000000, freq % 1000000);
445
446 tb_ticks_per_jiffy = freq / HZ;
447 tb_to_us = mulhwu_scale_factor(freq, 1000000);
448 }
449
450 /*****************************************************************************
451 * Interrupt stuff
452 *****************************************************************************/
453
454 static irqreturn_t ppc7d_i8259_intr(int irq, void *dev_id)
455 {
456 u32 temp = mv64x60_read(&bh, MV64x60_GPP_INTR_CAUSE);
457 if (temp & (1 << 28)) {
458 i8259_irq();
459 mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, temp & (~(1 << 28)));
460 return IRQ_HANDLED;
461 }
462
463 return IRQ_NONE;
464 }
465
466 /*
467 * Each interrupt cause is assigned an IRQ number.
468 * Southbridge has 16*2 (two 8259's) interrupts.
469 * Discovery-II has 96 interrupts (cause-hi, cause-lo, gpp x 32).
470 * If multiple interrupts are pending, get_irq() returns the
471 * lowest pending irq number first.
472 *
473 *
474 * IRQ # Source Trig Active
475 * =============================================================
476 *
477 * Southbridge
478 * -----------
479 * IRQ # Source Trig
480 * =============================================================
481 * 0 ISA High Resolution Counter Edge
482 * 1 Keyboard Edge
483 * 2 Cascade From (IRQ 8-15) Edge
484 * 3 Com 2 (Uart 2) Edge
485 * 4 Com 1 (Uart 1) Edge
486 * 5 PCI Int D/AFIX IRQZ ID4 (2,7) Level
487 * 6 GPIO Level
488 * 7 LPT Edge
489 * 8 RTC Alarm Edge
490 * 9 PCI Int A/PMC 2/AFIX IRQW ID1 (2,0) Level
491 * 10 PCI Int B/PMC 1/AFIX IRQX ID2 (2,1) Level
492 * 11 USB2 Level
493 * 12 Mouse Edge
494 * 13 Reserved internally by Ali M1535+
495 * 14 PCI Int C/VME/AFIX IRQY ID3 (2,6) Level
496 * 15 COM 5/6 Level
497 *
498 * 16..112 Discovery-II...
499 *
500 * MPP28 Southbridge Edge High
501 *
502 *
503 * Interrupts are cascaded through to the Discovery-II.
504 *
505 * PCI ---
506 * \
507 * CPLD --> ALI1535 -------> DISCOVERY-II
508 * INTF MPP28
509 */
510 static void __init ppc7d_init_irq(void)
511 {
512 int irq;
513
514 pr_debug("%s\n", __func__);
515 i8259_init(0, 0);
516 mv64360_init_irq();
517
518 /* IRQs 5,6,9,10,11,14,15 are level sensitive */
519 irq_desc[5].status |= IRQ_LEVEL;
520 irq_desc[6].status |= IRQ_LEVEL;
521 irq_desc[9].status |= IRQ_LEVEL;
522 irq_desc[10].status |= IRQ_LEVEL;
523 irq_desc[11].status |= IRQ_LEVEL;
524 irq_desc[14].status |= IRQ_LEVEL;
525 irq_desc[15].status |= IRQ_LEVEL;
526
527 /* GPP28 is edge triggered */
528 irq_desc[mv64360_irq_base + MV64x60_IRQ_GPP28].status &= ~IRQ_LEVEL;
529 }
530
531 static u32 ppc7d_irq_canonicalize(u32 irq)
532 {
533 if ((irq >= 16) && (irq < (16 + 96)))
534 irq -= 16;
535
536 return irq;
537 }
538
539 static int ppc7d_get_irq(void)
540 {
541 int irq;
542
543 irq = mv64360_get_irq();
544 if (irq == (mv64360_irq_base + MV64x60_IRQ_GPP28))
545 irq = i8259_irq();
546 return irq;
547 }
548
549 /*
550 * 9 PCI Int A/PMC 2/AFIX IRQW ID1 (2,0) Level
551 * 10 PCI Int B/PMC 1/AFIX IRQX ID2 (2,1) Level
552 * 14 PCI Int C/VME/AFIX IRQY ID3 (2,6) Level
553 * 5 PCI Int D/AFIX IRQZ ID4 (2,7) Level
554 */
555 static int __init ppc7d_map_irq(struct pci_dev *dev, unsigned char idsel,
556 unsigned char pin)
557 {
558 static const char pci_irq_table[][4] =
559 /*
560 * PCI IDSEL/INTPIN->INTLINE
561 * A B C D
562 */
563 {
564 {10, 14, 5, 9}, /* IDSEL 10 - PMC2 / AFIX IRQW */
565 {9, 10, 14, 5}, /* IDSEL 11 - PMC1 / AFIX IRQX */
566 {5, 9, 10, 14}, /* IDSEL 12 - AFIX IRQY */
567 {14, 5, 9, 10}, /* IDSEL 13 - AFIX IRQZ */
568 };
569 const long min_idsel = 10, max_idsel = 14, irqs_per_slot = 4;
570
571 pr_debug("%s: %04x/%04x/%x: idsel=%hx pin=%hu\n", __func__,
572 dev->vendor, dev->device, PCI_FUNC(dev->devfn), idsel, pin);
573
574 return PCI_IRQ_TABLE_LOOKUP;
575 }
576
577 void __init ppc7d_intr_setup(void)
578 {
579 u32 data;
580
581 /*
582 * Define GPP 28 interrupt polarity as active high
583 * input signal and level triggered
584 */
585 data = mv64x60_read(&bh, MV64x60_GPP_LEVEL_CNTL);
586 data &= ~(1 << 28);
587 mv64x60_write(&bh, MV64x60_GPP_LEVEL_CNTL, data);
588 data = mv64x60_read(&bh, MV64x60_GPP_IO_CNTL);
589 data &= ~(1 << 28);
590 mv64x60_write(&bh, MV64x60_GPP_IO_CNTL, data);
591
592 /* Config GPP intr ctlr to respond to level trigger */
593 data = mv64x60_read(&bh, MV64x60_COMM_ARBITER_CNTL);
594 data |= (1 << 10);
595 mv64x60_write(&bh, MV64x60_COMM_ARBITER_CNTL, data);
596
597 /* XXXX Erranum FEr PCI-#8 */
598 data = mv64x60_read(&bh, MV64x60_PCI0_CMD);
599 data &= ~((1 << 5) | (1 << 9));
600 mv64x60_write(&bh, MV64x60_PCI0_CMD, data);
601 data = mv64x60_read(&bh, MV64x60_PCI1_CMD);
602 data &= ~((1 << 5) | (1 << 9));
603 mv64x60_write(&bh, MV64x60_PCI1_CMD, data);
604
605 /*
606 * Dismiss and then enable interrupt on GPP interrupt cause
607 * for CPU #0
608 */
609 mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~(1 << 28));
610 data = mv64x60_read(&bh, MV64x60_GPP_INTR_MASK);
611 data |= (1 << 28);
612 mv64x60_write(&bh, MV64x60_GPP_INTR_MASK, data);
613
614 /*
615 * Dismiss and then enable interrupt on CPU #0 high cause reg
616 * BIT27 summarizes GPP interrupts 23-31
617 */
618 mv64x60_write(&bh, MV64360_IC_MAIN_CAUSE_HI, ~(1 << 27));
619 data = mv64x60_read(&bh, MV64360_IC_CPU0_INTR_MASK_HI);
620 data |= (1 << 27);
621 mv64x60_write(&bh, MV64360_IC_CPU0_INTR_MASK_HI, data);
622 }
623
624 /*****************************************************************************
625 * Platform device data fixup routines.
626 *****************************************************************************/
627
628 #if defined(CONFIG_SERIAL_MPSC)
629 static void __init ppc7d_fixup_mpsc_pdata(struct platform_device *pdev)
630 {
631 struct mpsc_pdata *pdata;
632
633 pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
634
635 pdata->max_idle = 40;
636 pdata->default_baud = PPC7D_DEFAULT_BAUD;
637 pdata->brg_clk_src = PPC7D_MPSC_CLK_SRC;
638 pdata->brg_clk_freq = PPC7D_MPSC_CLK_FREQ;
639
640 return;
641 }
642 #endif
643
644 #if defined(CONFIG_MV643XX_ETH)
645 static void __init ppc7d_fixup_eth_pdata(struct platform_device *pdev)
646 {
647 struct mv643xx_eth_platform_data *eth_pd;
648 static u16 phy_addr[] = {
649 PPC7D_ETH0_PHY_ADDR,
650 PPC7D_ETH1_PHY_ADDR,
651 PPC7D_ETH2_PHY_ADDR,
652 };
653 int i;
654
655 eth_pd = pdev->dev.platform_data;
656 eth_pd->force_phy_addr = 1;
657 eth_pd->phy_addr = phy_addr[pdev->id];
658 eth_pd->tx_queue_size = PPC7D_ETH_TX_QUEUE_SIZE;
659 eth_pd->rx_queue_size = PPC7D_ETH_RX_QUEUE_SIZE;
660
661 /* Adjust IRQ by mv64360_irq_base */
662 for (i = 0; i < pdev->num_resources; i++) {
663 struct resource *r = &pdev->resource[i];
664
665 if (r->flags & IORESOURCE_IRQ) {
666 r->start += mv64360_irq_base;
667 r->end += mv64360_irq_base;
668 pr_debug("%s, uses IRQ %d\n", pdev->name,
669 (int)r->start);
670 }
671 }
672
673 }
674 #endif
675
676 #if defined(CONFIG_I2C_MV64XXX)
677 static void __init
678 ppc7d_fixup_i2c_pdata(struct platform_device *pdev)
679 {
680 struct mv64xxx_i2c_pdata *pdata;
681 int i;
682
683 pdata = pdev->dev.platform_data;
684 if (pdata == NULL) {
685 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
686 if (pdata == NULL)
687 return;
688
689 pdev->dev.platform_data = pdata;
690 }
691
692 /* divisors M=8, N=3 for 100kHz I2C from 133MHz system clock */
693 pdata->freq_m = 8;
694 pdata->freq_n = 3;
695 pdata->timeout = 500;
696 pdata->retries = 3;
697
698 /* Adjust IRQ by mv64360_irq_base */
699 for (i = 0; i < pdev->num_resources; i++) {
700 struct resource *r = &pdev->resource[i];
701
702 if (r->flags & IORESOURCE_IRQ) {
703 r->start += mv64360_irq_base;
704 r->end += mv64360_irq_base;
705 pr_debug("%s, uses IRQ %d\n", pdev->name, (int) r->start);
706 }
707 }
708 }
709 #endif
710
711 static int ppc7d_platform_notify(struct device *dev)
712 {
713 static struct {
714 char *bus_id;
715 void ((*rtn) (struct platform_device * pdev));
716 } dev_map[] = {
717 #if defined(CONFIG_SERIAL_MPSC)
718 { MPSC_CTLR_NAME ".0", ppc7d_fixup_mpsc_pdata },
719 { MPSC_CTLR_NAME ".1", ppc7d_fixup_mpsc_pdata },
720 #endif
721 #if defined(CONFIG_MV643XX_ETH)
722 { MV643XX_ETH_NAME ".0", ppc7d_fixup_eth_pdata },
723 { MV643XX_ETH_NAME ".1", ppc7d_fixup_eth_pdata },
724 { MV643XX_ETH_NAME ".2", ppc7d_fixup_eth_pdata },
725 #endif
726 #if defined(CONFIG_I2C_MV64XXX)
727 { MV64XXX_I2C_CTLR_NAME ".0", ppc7d_fixup_i2c_pdata },
728 #endif
729 };
730 struct platform_device *pdev;
731 int i;
732
733 if (dev && dev->bus_id)
734 for (i = 0; i < ARRAY_SIZE(dev_map); i++)
735 if (!strncmp(dev->bus_id, dev_map[i].bus_id,
736 BUS_ID_SIZE)) {
737
738 pdev = container_of(dev,
739 struct platform_device,
740 dev);
741 dev_map[i].rtn(pdev);
742 }
743
744 return 0;
745 }
746
747 /*****************************************************************************
748 * PCI device fixups.
749 * These aren't really fixups per se. They are used to init devices as they
750 * are found during PCI scan.
751 *
752 * The PPC7D has an HB8 PCI-X bridge which must be set up during a PCI
753 * scan in order to find other devices on its secondary side.
754 *****************************************************************************/
755
756 static void __init ppc7d_fixup_hb8(struct pci_dev *dev)
757 {
758 u16 val16;
759
760 if (dev->bus->number == 0) {
761 pr_debug("PCI: HB8 init\n");
762
763 pci_write_config_byte(dev, 0x1c,
764 ((PPC7D_PCI0_IO_START_PCI_ADDR & 0xf000)
765 >> 8) | 0x01);
766 pci_write_config_byte(dev, 0x1d,
767 (((PPC7D_PCI0_IO_START_PCI_ADDR +
768 PPC7D_PCI0_IO_SIZE -
769 1) & 0xf000) >> 8) | 0x01);
770 pci_write_config_word(dev, 0x30,
771 PPC7D_PCI0_IO_START_PCI_ADDR >> 16);
772 pci_write_config_word(dev, 0x32,
773 ((PPC7D_PCI0_IO_START_PCI_ADDR +
774 PPC7D_PCI0_IO_SIZE -
775 1) >> 16) & 0xffff);
776
777 pci_write_config_word(dev, 0x20,
778 PPC7D_PCI0_MEM0_START_PCI_LO_ADDR >> 16);
779 pci_write_config_word(dev, 0x22,
780 ((PPC7D_PCI0_MEM0_START_PCI_LO_ADDR +
781 PPC7D_PCI0_MEM0_SIZE -
782 1) >> 16) & 0xffff);
783 pci_write_config_word(dev, 0x24, 0);
784 pci_write_config_word(dev, 0x26, 0);
785 pci_write_config_dword(dev, 0x28, 0);
786 pci_write_config_dword(dev, 0x2c, 0);
787
788 pci_read_config_word(dev, 0x3e, &val16);
789 val16 |= ((1 << 5) | (1 << 1)); /* signal master aborts and
790 * SERR to primary
791 */
792 val16 &= ~(1 << 2); /* ISA disable, so all ISA
793 * ports forwarded to secondary
794 */
795 pci_write_config_word(dev, 0x3e, val16);
796 }
797 }
798
799 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0028, ppc7d_fixup_hb8);
800
801 /* This should perhaps be a separate driver as we're actually initializing
802 * the chip for this board here. It's hardly a fixup...
803 */
804 static void __init ppc7d_fixup_ali1535(struct pci_dev *dev)
805 {
806 pr_debug("PCI: ALI1535 init\n");
807
808 if (dev->bus->number == 1) {
809 /* Configure the ISA Port Settings */
810 pci_write_config_byte(dev, 0x43, 0x00);
811
812 /* Disable PCI Interrupt polling mode */
813 pci_write_config_byte(dev, 0x45, 0x00);
814
815 /* Multifunction pin select INTFJ -> INTF */
816 pci_write_config_byte(dev, 0x78, 0x00);
817
818 /* Set PCI INT -> IRQ Routing control in for external
819 * pins south bridge.
820 */
821 pci_write_config_byte(dev, 0x48, 0x31); /* [7-4] INT B -> IRQ10
822 * [3-0] INT A -> IRQ9
823 */
824 pci_write_config_byte(dev, 0x49, 0x5D); /* [7-4] INT D -> IRQ5
825 * [3-0] INT C -> IRQ14
826 */
827
828 /* PPC7D setup */
829 /* NEC USB device on IRQ 11 (INTE) - INTF disabled */
830 pci_write_config_byte(dev, 0x4A, 0x09);
831
832 /* GPIO on IRQ 6 */
833 pci_write_config_byte(dev, 0x76, 0x07);
834
835 /* SIRQ I (COMS 5/6) use IRQ line 15.
836 * Positive (not subtractive) address decode.
837 */
838 pci_write_config_byte(dev, 0x44, 0x0f);
839
840 /* SIRQ II disabled */
841 pci_write_config_byte(dev, 0x75, 0x0);
842
843 /* On board USB and RTC disabled */
844 pci_write_config_word(dev, 0x52, (1 << 14));
845 pci_write_config_byte(dev, 0x74, 0x00);
846
847 /* On board IDE disabled */
848 pci_write_config_byte(dev, 0x58, 0x00);
849
850 /* Decode 32-bit addresses */
851 pci_write_config_byte(dev, 0x5b, 0);
852
853 /* Disable docking IO */
854 pci_write_config_word(dev, 0x5c, 0x0000);
855
856 /* Disable modem, enable sound */
857 pci_write_config_byte(dev, 0x77, (1 << 6));
858
859 /* Disable hot-docking mode */
860 pci_write_config_byte(dev, 0x7d, 0x00);
861 }
862 }
863
864 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1533, ppc7d_fixup_ali1535);
865
866 static int ppc7d_pci_exclude_device(u8 bus, u8 devfn)
867 {
868 /* Early versions of this board were fitted with IBM ALMA
869 * PCI-VME bridge chips. The PCI config space of these devices
870 * was not set up correctly and causes PCI scan problems.
871 */
872 if ((bus == 1) && (PCI_SLOT(devfn) == 4) && ppc7d_has_alma)
873 return PCIBIOS_DEVICE_NOT_FOUND;
874
875 return mv64x60_pci_exclude_device(bus, devfn);
876 }
877
878 /* This hook is called when each PCI bus is probed.
879 */
880 static void ppc7d_pci_fixup_bus(struct pci_bus *bus)
881 {
882 pr_debug("PCI BUS %hu: %lx/%lx %lx/%lx %lx/%lx %lx/%lx\n",
883 bus->number,
884 bus->resource[0] ? bus->resource[0]->start : 0,
885 bus->resource[0] ? bus->resource[0]->end : 0,
886 bus->resource[1] ? bus->resource[1]->start : 0,
887 bus->resource[1] ? bus->resource[1]->end : 0,
888 bus->resource[2] ? bus->resource[2]->start : 0,
889 bus->resource[2] ? bus->resource[2]->end : 0,
890 bus->resource[3] ? bus->resource[3]->start : 0,
891 bus->resource[3] ? bus->resource[3]->end : 0);
892
893 if ((bus->number == 1) && (bus->resource[2] != NULL)) {
894 /* Hide PCI window 2 of Bus 1 which is used only to
895 * map legacy ISA memory space.
896 */
897 bus->resource[2]->start = 0;
898 bus->resource[2]->end = 0;
899 bus->resource[2]->flags = 0;
900 }
901 }
902
903 /*****************************************************************************
904 * Board device setup code
905 *****************************************************************************/
906
907 void __init ppc7d_setup_peripherals(void)
908 {
909 u32 val32;
910
911 /* Set up windows for boot CS */
912 mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
913 PPC7D_BOOT_WINDOW_BASE, PPC7D_BOOT_WINDOW_SIZE,
914 0);
915 bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
916
917 /* Boot firmware configures the following DevCS addresses.
918 * DevCS0 - board control/status
919 * DevCS1 - test registers
920 * DevCS2 - AFIX port/address registers (for identifying)
921 * DevCS3 - FLASH
922 *
923 * We don't use DevCS0, DevCS1.
924 */
925 val32 = mv64x60_read(&bh, MV64360_CPU_BAR_ENABLE);
926 val32 |= ((1 << 4) | (1 << 5));
927 mv64x60_write(&bh, MV64360_CPU_BAR_ENABLE, val32);
928 mv64x60_write(&bh, MV64x60_CPU2DEV_0_BASE, 0);
929 mv64x60_write(&bh, MV64x60_CPU2DEV_0_SIZE, 0);
930 mv64x60_write(&bh, MV64x60_CPU2DEV_1_BASE, 0);
931 mv64x60_write(&bh, MV64x60_CPU2DEV_1_SIZE, 0);
932
933 mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN,
934 PPC7D_AFIX_REG_BASE, PPC7D_AFIX_REG_SIZE, 0);
935 bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
936
937 mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_3_WIN,
938 PPC7D_FLASH_BASE, PPC7D_FLASH_SIZE_ACTUAL, 0);
939 bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_3_WIN);
940
941 mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
942 PPC7D_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE,
943 0);
944 bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
945
946 /* Set up Enet->SRAM window */
947 mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN,
948 PPC7D_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE,
949 0x2);
950 bh.ci->enable_window_32bit(&bh, MV64x60_ENET2MEM_4_WIN);
951
952 /* Give enet r/w access to memory region */
953 val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_0);
954 val32 |= (0x3 << (4 << 1));
955 mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_0, val32);
956 val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_1);
957 val32 |= (0x3 << (4 << 1));
958 mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_1, val32);
959 val32 = mv64x60_read(&bh, MV64360_ENET2MEM_ACC_PROT_2);
960 val32 |= (0x3 << (4 << 1));
961 mv64x60_write(&bh, MV64360_ENET2MEM_ACC_PROT_2, val32);
962
963 val32 = mv64x60_read(&bh, MV64x60_TIMR_CNTR_0_3_CNTL);
964 val32 &= ~((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24));
965 mv64x60_write(&bh, MV64x60_TIMR_CNTR_0_3_CNTL, val32);
966
967 /* Enumerate pci bus.
968 *
969 * We scan PCI#0 first (the bus with the HB8 and other
970 * on-board peripherals). We must configure the 64360 before
971 * each scan, according to the bus number assignments. Busses
972 * are assigned incrementally, starting at 0. PCI#0 is
973 * usually assigned bus#0, the secondary side of the HB8 gets
974 * bus#1 and PCI#1 (second PMC site) gets bus#2. However, if
975 * any PMC card has a PCI bridge, these bus assignments will
976 * change.
977 */
978
979 /* Turn off PCI retries */
980 val32 = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
981 val32 |= (1 << 17);
982 mv64x60_write(&bh, MV64x60_CPU_CONFIG, val32);
983
984 /* Scan PCI#0 */
985 mv64x60_set_bus(&bh, 0, 0);
986 bh.hose_a->first_busno = 0;
987 bh.hose_a->last_busno = 0xff;
988 bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
989 printk(KERN_INFO "PCI#0: first=%d last=%d\n",
990 bh.hose_a->first_busno, bh.hose_a->last_busno);
991
992 /* Scan PCI#1 */
993 bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
994 mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
995 bh.hose_b->last_busno = 0xff;
996 bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
997 bh.hose_b->first_busno);
998 printk(KERN_INFO "PCI#1: first=%d last=%d\n",
999 bh.hose_b->first_busno, bh.hose_b->last_busno);
1000
1001 /* Turn on PCI retries */
1002 val32 = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
1003 val32 &= ~(1 << 17);
1004 mv64x60_write(&bh, MV64x60_CPU_CONFIG, val32);
1005
1006 /* Setup interrupts */
1007 ppc7d_intr_setup();
1008 }
1009
1010 static void __init ppc7d_setup_bridge(void)
1011 {
1012 struct mv64x60_setup_info si;
1013 int i;
1014 u32 temp;
1015
1016 mv64360_irq_base = 16; /* first 16 intrs are 2 x 8259's */
1017
1018 memset(&si, 0, sizeof(si));
1019
1020 si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
1021
1022 si.pci_0.enable_bus = 1;
1023 si.pci_0.pci_io.cpu_base = PPC7D_PCI0_IO_START_PROC_ADDR;
1024 si.pci_0.pci_io.pci_base_hi = 0;
1025 si.pci_0.pci_io.pci_base_lo = PPC7D_PCI0_IO_START_PCI_ADDR;
1026 si.pci_0.pci_io.size = PPC7D_PCI0_IO_SIZE;
1027 si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
1028 si.pci_0.pci_mem[0].cpu_base = PPC7D_PCI0_MEM0_START_PROC_ADDR;
1029 si.pci_0.pci_mem[0].pci_base_hi = PPC7D_PCI0_MEM0_START_PCI_HI_ADDR;
1030 si.pci_0.pci_mem[0].pci_base_lo = PPC7D_PCI0_MEM0_START_PCI_LO_ADDR;
1031 si.pci_0.pci_mem[0].size = PPC7D_PCI0_MEM0_SIZE;
1032 si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
1033 si.pci_0.pci_mem[1].cpu_base = PPC7D_PCI0_MEM1_START_PROC_ADDR;
1034 si.pci_0.pci_mem[1].pci_base_hi = PPC7D_PCI0_MEM1_START_PCI_HI_ADDR;
1035 si.pci_0.pci_mem[1].pci_base_lo = PPC7D_PCI0_MEM1_START_PCI_LO_ADDR;
1036 si.pci_0.pci_mem[1].size = PPC7D_PCI0_MEM1_SIZE;
1037 si.pci_0.pci_mem[1].swap = MV64x60_CPU2PCI_SWAP_NONE;
1038 si.pci_0.pci_cmd_bits = 0;
1039 si.pci_0.latency_timer = 0x80;
1040
1041 si.pci_1.enable_bus = 1;
1042 si.pci_1.pci_io.cpu_base = PPC7D_PCI1_IO_START_PROC_ADDR;
1043 si.pci_1.pci_io.pci_base_hi = 0;
1044 si.pci_1.pci_io.pci_base_lo = PPC7D_PCI1_IO_START_PCI_ADDR;
1045 si.pci_1.pci_io.size = PPC7D_PCI1_IO_SIZE;
1046 si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
1047 si.pci_1.pci_mem[0].cpu_base = PPC7D_PCI1_MEM0_START_PROC_ADDR;
1048 si.pci_1.pci_mem[0].pci_base_hi = PPC7D_PCI1_MEM0_START_PCI_HI_ADDR;
1049 si.pci_1.pci_mem[0].pci_base_lo = PPC7D_PCI1_MEM0_START_PCI_LO_ADDR;
1050 si.pci_1.pci_mem[0].size = PPC7D_PCI1_MEM0_SIZE;
1051 si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
1052 si.pci_1.pci_mem[1].cpu_base = PPC7D_PCI1_MEM1_START_PROC_ADDR;
1053 si.pci_1.pci_mem[1].pci_base_hi = PPC7D_PCI1_MEM1_START_PCI_HI_ADDR;
1054 si.pci_1.pci_mem[1].pci_base_lo = PPC7D_PCI1_MEM1_START_PCI_LO_ADDR;
1055 si.pci_1.pci_mem[1].size = PPC7D_PCI1_MEM1_SIZE;
1056 si.pci_1.pci_mem[1].swap = MV64x60_CPU2PCI_SWAP_NONE;
1057 si.pci_1.pci_cmd_bits = 0;
1058 si.pci_1.latency_timer = 0x80;
1059
1060 /* Don't clear the SRAM window since we use it for debug */
1061 si.window_preserve_mask_32_lo = (1 << MV64x60_CPU2SRAM_WIN);
1062
1063 printk(KERN_INFO "PCI: MV64360 PCI#0 IO at %x, size %x\n",
1064 si.pci_0.pci_io.cpu_base, si.pci_0.pci_io.size);
1065 printk(KERN_INFO "PCI: MV64360 PCI#1 IO at %x, size %x\n",
1066 si.pci_1.pci_io.cpu_base, si.pci_1.pci_io.size);
1067
1068 for (i = 0; i < MV64x60_CPU2MEM_WINDOWS; i++) {
1069 #if defined(CONFIG_NOT_COHERENT_CACHE)
1070 si.cpu_prot_options[i] = 0;
1071 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE;
1072 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE;
1073 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE;
1074
1075 si.pci_0.acc_cntl_options[i] =
1076 MV64360_PCI_ACC_CNTL_SNOOP_NONE |
1077 MV64360_PCI_ACC_CNTL_SWAP_NONE |
1078 MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
1079 MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
1080
1081 si.pci_1.acc_cntl_options[i] =
1082 MV64360_PCI_ACC_CNTL_SNOOP_NONE |
1083 MV64360_PCI_ACC_CNTL_SWAP_NONE |
1084 MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
1085 MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
1086 #else
1087 si.cpu_prot_options[i] = 0;
1088 /* All PPC7D hardware uses B0 or newer MV64360 silicon which
1089 * does not have snoop bugs.
1090 */
1091 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_WB;
1092 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_WB;
1093 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_WB;
1094
1095 si.pci_0.acc_cntl_options[i] =
1096 MV64360_PCI_ACC_CNTL_SNOOP_WB |
1097 MV64360_PCI_ACC_CNTL_SWAP_NONE |
1098 MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
1099 MV64360_PCI_ACC_CNTL_RDSIZE_32_BYTES;
1100
1101 si.pci_1.acc_cntl_options[i] =
1102 MV64360_PCI_ACC_CNTL_SNOOP_WB |
1103 MV64360_PCI_ACC_CNTL_SWAP_NONE |
1104 MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
1105 MV64360_PCI_ACC_CNTL_RDSIZE_32_BYTES;
1106 #endif
1107 }
1108
1109 /* Lookup PCI host bridges */
1110 if (mv64x60_init(&bh, &si))
1111 printk(KERN_ERR "MV64360 initialization failed.\n");
1112
1113 pr_debug("MV64360 regs @ %lx/%p\n", bh.p_base, bh.v_base);
1114
1115 /* Enable WB Cache coherency on SRAM */
1116 temp = mv64x60_read(&bh, MV64360_SRAM_CONFIG);
1117 pr_debug("SRAM_CONFIG: %x\n", temp);
1118 #if defined(CONFIG_NOT_COHERENT_CACHE)
1119 mv64x60_write(&bh, MV64360_SRAM_CONFIG, temp & ~0x2);
1120 #else
1121 mv64x60_write(&bh, MV64360_SRAM_CONFIG, temp | 0x2);
1122 #endif
1123 /* If system operates with internal bus arbiter (CPU master
1124 * control bit8) clear AACK Delay bit [25] in CPU
1125 * configuration register.
1126 */
1127 temp = mv64x60_read(&bh, MV64x60_CPU_MASTER_CNTL);
1128 if (temp & (1 << 8)) {
1129 temp = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
1130 mv64x60_write(&bh, MV64x60_CPU_CONFIG, (temp & ~(1 << 25)));
1131 }
1132
1133 /* Data and address parity is enabled */
1134 temp = mv64x60_read(&bh, MV64x60_CPU_CONFIG);
1135 mv64x60_write(&bh, MV64x60_CPU_CONFIG,
1136 (temp | (1 << 26) | (1 << 19)));
1137
1138 pci_dram_offset = 0; /* sys mem at same addr on PCI & cpu bus */
1139 ppc_md.pci_swizzle = common_swizzle;
1140 ppc_md.pci_map_irq = ppc7d_map_irq;
1141 ppc_md.pci_exclude_device = ppc7d_pci_exclude_device;
1142
1143 mv64x60_set_bus(&bh, 0, 0);
1144 bh.hose_a->first_busno = 0;
1145 bh.hose_a->last_busno = 0xff;
1146 bh.hose_a->mem_space.start = PPC7D_PCI0_MEM0_START_PCI_LO_ADDR;
1147 bh.hose_a->mem_space.end =
1148 PPC7D_PCI0_MEM0_START_PCI_LO_ADDR + PPC7D_PCI0_MEM0_SIZE;
1149
1150 /* These will be set later, as a result of PCI0 scan */
1151 bh.hose_b->first_busno = 0;
1152 bh.hose_b->last_busno = 0xff;
1153 bh.hose_b->mem_space.start = PPC7D_PCI1_MEM0_START_PCI_LO_ADDR;
1154 bh.hose_b->mem_space.end =
1155 PPC7D_PCI1_MEM0_START_PCI_LO_ADDR + PPC7D_PCI1_MEM0_SIZE;
1156
1157 pr_debug("MV64360: PCI#0 IO decode %08x/%08x IO remap %08x\n",
1158 mv64x60_read(&bh, 0x48), mv64x60_read(&bh, 0x50),
1159 mv64x60_read(&bh, 0xf0));
1160 }
1161
1162 static void __init ppc7d_setup_arch(void)
1163 {
1164 int port;
1165
1166 loops_per_jiffy = 100000000 / HZ;
1167
1168 #ifdef CONFIG_BLK_DEV_INITRD
1169 if (initrd_start)
1170 ROOT_DEV = Root_RAM0;
1171 else
1172 #endif
1173 #ifdef CONFIG_ROOT_NFS
1174 ROOT_DEV = Root_NFS;
1175 #else
1176 ROOT_DEV = Root_HDA1;
1177 #endif
1178
1179 if ((cur_cpu_spec->cpu_features & CPU_FTR_SPEC7450) ||
1180 (cur_cpu_spec->cpu_features & CPU_FTR_L3CR))
1181 /* 745x is different. We only want to pass along enable. */
1182 _set_L2CR(L2CR_L2E);
1183 else if (cur_cpu_spec->cpu_features & CPU_FTR_L2CR)
1184 /* All modules have 1MB of L2. We also assume that an
1185 * L2 divisor of 3 will work.
1186 */
1187 _set_L2CR(L2CR_L2E | L2CR_L2SIZ_1MB | L2CR_L2CLK_DIV3
1188 | L2CR_L2RAM_PIPE | L2CR_L2OH_1_0 | L2CR_L2DF);
1189
1190 if (cur_cpu_spec->cpu_features & CPU_FTR_L3CR)
1191 /* No L3 cache */
1192 _set_L3CR(0);
1193
1194 #ifdef CONFIG_DUMMY_CONSOLE
1195 conswitchp = &dummy_con;
1196 #endif
1197
1198 /* Lookup PCI host bridges */
1199 if (ppc_md.progress)
1200 ppc_md.progress("ppc7d_setup_arch: calling setup_bridge", 0);
1201
1202 ppc7d_setup_bridge();
1203 ppc7d_setup_peripherals();
1204
1205 /* Disable ethernet. It might have been setup by the bootrom */
1206 for (port = 0; port < 3; port++)
1207 mv64x60_write(&bh, MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(port),
1208 0x0000ff00);
1209
1210 /* Clear queue pointers to ensure they are all initialized,
1211 * otherwise since queues 1-7 are unused, they have random
1212 * pointers which look strange in register dumps. Don't bother
1213 * with queue 0 since it will be initialized later.
1214 */
1215 for (port = 0; port < 3; port++) {
1216 mv64x60_write(&bh,
1217 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_1(port),
1218 0x00000000);
1219 mv64x60_write(&bh,
1220 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_2(port),
1221 0x00000000);
1222 mv64x60_write(&bh,
1223 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_3(port),
1224 0x00000000);
1225 mv64x60_write(&bh,
1226 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_4(port),
1227 0x00000000);
1228 mv64x60_write(&bh,
1229 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_5(port),
1230 0x00000000);
1231 mv64x60_write(&bh,
1232 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_6(port),
1233 0x00000000);
1234 mv64x60_write(&bh,
1235 MV643XX_ETH_RX_CURRENT_QUEUE_DESC_PTR_7(port),
1236 0x00000000);
1237 }
1238
1239 printk(KERN_INFO "Radstone Technology PPC7D\n");
1240 if (ppc_md.progress)
1241 ppc_md.progress("ppc7d_setup_arch: exit", 0);
1242
1243 }
1244
1245 /* Real Time Clock support.
1246 * PPC7D has a DS1337 accessed by I2C.
1247 */
1248 static ulong ppc7d_get_rtc_time(void)
1249 {
1250 struct rtc_time tm;
1251 int result;
1252
1253 spin_lock(&rtc_lock);
1254 result = ds1337_do_command(0, DS1337_GET_DATE, &tm);
1255 spin_unlock(&rtc_lock);
1256
1257 if (result == 0)
1258 result = mktime(tm.tm_year, tm.tm_mon, tm.tm_mday, tm.tm_hour, tm.tm_min, tm.tm_sec);
1259
1260 return result;
1261 }
1262
1263 static int ppc7d_set_rtc_time(unsigned long nowtime)
1264 {
1265 struct rtc_time tm;
1266 int result;
1267
1268 spin_lock(&rtc_lock);
1269 to_tm(nowtime, &tm);
1270 result = ds1337_do_command(0, DS1337_SET_DATE, &tm);
1271 spin_unlock(&rtc_lock);
1272
1273 return result;
1274 }
1275
1276 /* This kernel command line parameter can be used to have the target
1277 * wait for a JTAG debugger to attach. Of course, a JTAG debugger
1278 * with hardware breakpoint support can have the target stop at any
1279 * location during init, but this is a convenience feature that makes
1280 * it easier in the common case of loading the code using the ppcboot
1281 * bootloader..
1282 */
1283 static unsigned long ppc7d_wait_debugger;
1284
1285 static int __init ppc7d_waitdbg(char *str)
1286 {
1287 ppc7d_wait_debugger = 1;
1288 return 1;
1289 }
1290
1291 __setup("waitdbg", ppc7d_waitdbg);
1292
1293 /* Second phase board init, called after other (architecture common)
1294 * low-level services have been initialized.
1295 */
1296 static void ppc7d_init2(void)
1297 {
1298 unsigned long flags;
1299 u32 data;
1300 u8 data8;
1301
1302 pr_debug("%s: enter\n", __func__);
1303
1304 /* Wait for debugger? */
1305 if (ppc7d_wait_debugger) {
1306 printk("Waiting for debugger...\n");
1307
1308 while (readl(&ppc7d_wait_debugger)) ;
1309 }
1310
1311 /* Hook up i8259 interrupt which is connected to GPP28 */
1312 request_irq(mv64360_irq_base + MV64x60_IRQ_GPP28, ppc7d_i8259_intr,
1313 IRQF_DISABLED, "I8259 (GPP28) interrupt", (void *)0);
1314
1315 /* Configure MPP16 as watchdog NMI, MPP17 as watchdog WDE */
1316 spin_lock_irqsave(&mv64x60_lock, flags);
1317 data = mv64x60_read(&bh, MV64x60_MPP_CNTL_2);
1318 data &= ~(0x0000000f << 0);
1319 data |= (0x00000004 << 0);
1320 data &= ~(0x0000000f << 4);
1321 data |= (0x00000004 << 4);
1322 mv64x60_write(&bh, MV64x60_MPP_CNTL_2, data);
1323 spin_unlock_irqrestore(&mv64x60_lock, flags);
1324
1325 /* All LEDs off */
1326 data8 = inb(PPC7D_CPLD_LEDS);
1327 data8 &= ~0x08;
1328 data8 |= 0x07;
1329 outb(data8, PPC7D_CPLD_LEDS);
1330
1331 /* Hook up RTC. We couldn't do this earlier because we need the I2C subsystem */
1332 ppc_md.set_rtc_time = ppc7d_set_rtc_time;
1333 ppc_md.get_rtc_time = ppc7d_get_rtc_time;
1334
1335 pr_debug("%s: exit\n", __func__);
1336 }
1337
1338 /* Called from machine_init(), early, before any of the __init functions
1339 * have run. We must init software-configurable pins before other functions
1340 * such as interrupt controllers are initialised.
1341 */
1342 void __init platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
1343 unsigned long r6, unsigned long r7)
1344 {
1345 u8 val8;
1346 u8 rev_num;
1347
1348 /* Map 0xe0000000-0xffffffff early because we need access to SRAM
1349 * and the ISA memory space (for serial port) here. This mapping
1350 * is redone properly in ppc7d_map_io() later.
1351 */
1352 mtspr(SPRN_DBAT3U, 0xe0003fff);
1353 mtspr(SPRN_DBAT3L, 0xe000002a);
1354
1355 /*
1356 * Zero SRAM. Note that this generates parity errors on
1357 * internal data path in SRAM if it's first time accessing it
1358 * after reset.
1359 *
1360 * We do this ASAP to avoid parity errors when reading
1361 * uninitialized SRAM.
1362 */
1363 memset((void *)PPC7D_INTERNAL_SRAM_BASE, 0, MV64360_SRAM_SIZE);
1364
1365 pr_debug("platform_init: r3-r7: %lx %lx %lx %lx %lx\n",
1366 r3, r4, r5, r6, r7);
1367
1368 parse_bootinfo(find_bootinfo());
1369
1370 /* ASSUMPTION: If both r3 (bd_t pointer) and r6 (cmdline pointer)
1371 * are non-zero, then we should use the board info from the bd_t
1372 * structure and the cmdline pointed to by r6 instead of the
1373 * information from birecs, if any. Otherwise, use the information
1374 * from birecs as discovered by the preceding call to
1375 * parse_bootinfo(). This rule should work with both PPCBoot, which
1376 * uses a bd_t board info structure, and the kernel boot wrapper,
1377 * which uses birecs.
1378 */
1379 if (r3 && r6) {
1380 bd_t *bp = (bd_t *) __res;
1381
1382 /* copy board info structure */
1383 memcpy((void *)__res, (void *)(r3 + KERNELBASE), sizeof(bd_t));
1384 /* copy command line */
1385 *(char *)(r7 + KERNELBASE) = 0;
1386 strcpy(cmd_line, (char *)(r6 + KERNELBASE));
1387
1388 printk(KERN_INFO "Board info data:-\n");
1389 printk(KERN_INFO " Internal freq: %lu MHz, bus freq: %lu MHz\n",
1390 bp->bi_intfreq, bp->bi_busfreq);
1391 printk(KERN_INFO " Memory: %lx, size %lx\n", bp->bi_memstart,
1392 bp->bi_memsize);
1393 printk(KERN_INFO " Console baudrate: %lu\n", bp->bi_baudrate);
1394 printk(KERN_INFO " Ethernet address: "
1395 "%02x:%02x:%02x:%02x:%02x:%02x\n",
1396 bp->bi_enetaddr[0], bp->bi_enetaddr[1],
1397 bp->bi_enetaddr[2], bp->bi_enetaddr[3],
1398 bp->bi_enetaddr[4], bp->bi_enetaddr[5]);
1399 }
1400 #ifdef CONFIG_BLK_DEV_INITRD
1401 /* take care of initrd if we have one */
1402 if (r4) {
1403 initrd_start = r4 + KERNELBASE;
1404 initrd_end = r5 + KERNELBASE;
1405 printk(KERN_INFO "INITRD @ %lx/%lx\n", initrd_start, initrd_end);
1406 }
1407 #endif /* CONFIG_BLK_DEV_INITRD */
1408
1409 /* Map in board regs, etc. */
1410 isa_io_base = 0xe8000000;
1411 isa_mem_base = 0xe8000000;
1412 pci_dram_offset = 0x00000000;
1413 ISA_DMA_THRESHOLD = 0x00ffffff;
1414 DMA_MODE_READ = 0x44;
1415 DMA_MODE_WRITE = 0x48;
1416
1417 ppc_md.setup_arch = ppc7d_setup_arch;
1418 ppc_md.init = ppc7d_init2;
1419 ppc_md.show_cpuinfo = ppc7d_show_cpuinfo;
1420 /* XXX this is broken... */
1421 ppc_md.irq_canonicalize = ppc7d_irq_canonicalize;
1422 ppc_md.init_IRQ = ppc7d_init_irq;
1423 ppc_md.get_irq = ppc7d_get_irq;
1424
1425 ppc_md.restart = ppc7d_restart;
1426 ppc_md.power_off = ppc7d_power_off;
1427 ppc_md.halt = ppc7d_halt;
1428
1429 ppc_md.find_end_of_memory = ppc7d_find_end_of_memory;
1430 ppc_md.setup_io_mappings = ppc7d_map_io;
1431
1432 ppc_md.time_init = NULL;
1433 ppc_md.set_rtc_time = NULL;
1434 ppc_md.get_rtc_time = NULL;
1435 ppc_md.calibrate_decr = ppc7d_calibrate_decr;
1436 ppc_md.nvram_read_val = NULL;
1437 ppc_md.nvram_write_val = NULL;
1438
1439 ppc_md.heartbeat = ppc7d_heartbeat;
1440 ppc_md.heartbeat_reset = HZ;
1441 ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
1442
1443 ppc_md.pcibios_fixup_bus = ppc7d_pci_fixup_bus;
1444
1445 #if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH) || \
1446 defined(CONFIG_I2C_MV64XXX)
1447 platform_notify = ppc7d_platform_notify;
1448 #endif
1449
1450 #ifdef CONFIG_SERIAL_MPSC
1451 /* On PPC7D, we must configure MPSC support via CPLD control
1452 * registers.
1453 */
1454 outb(PPC7D_CPLD_RTS_COM4_SCLK |
1455 PPC7D_CPLD_RTS_COM56_ENABLED, PPC7D_CPLD_RTS);
1456 outb(PPC7D_CPLD_COMS_COM3_TCLKEN |
1457 PPC7D_CPLD_COMS_COM3_TXEN |
1458 PPC7D_CPLD_COMS_COM4_TCLKEN |
1459 PPC7D_CPLD_COMS_COM4_TXEN, PPC7D_CPLD_COMS);
1460 #endif /* CONFIG_SERIAL_MPSC */
1461
1462 #if defined(CONFIG_KGDB) || defined(CONFIG_SERIAL_TEXT_DEBUG)
1463 ppc7d_early_serial_map();
1464 #ifdef CONFIG_SERIAL_TEXT_DEBUG
1465 #if defined(CONFIG_SERIAL_MPSC_CONSOLE)
1466 ppc_md.progress = mv64x60_mpsc_progress;
1467 #elif defined(CONFIG_SERIAL_8250)
1468 ppc_md.progress = gen550_progress;
1469 #else
1470 #error CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG has no supported CONFIG_SERIAL_XXX
1471 #endif /* CONFIG_SERIAL_8250 */
1472 #endif /* CONFIG_SERIAL_TEXT_DEBUG */
1473 #endif /* CONFIG_KGDB || CONFIG_SERIAL_TEXT_DEBUG */
1474
1475 /* Enable write access to user flash. This is necessary for
1476 * flash probe.
1477 */
1478 val8 = readb((void *)isa_io_base + PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
1479 writeb(val8 | (PPC7D_CPLD_SW_FLASH_WRPROT_ENABLED &
1480 PPC7D_CPLD_SW_FLASH_WRPROT_USER_MASK),
1481 (void *)isa_io_base + PPC7D_CPLD_SW_FLASH_WRITE_PROTECT);
1482
1483 /* Determine if this board has IBM ALMA VME devices */
1484 val8 = readb((void *)isa_io_base + PPC7D_CPLD_BOARD_REVISION);
1485 rev_num = (val8 & PPC7D_CPLD_BOARD_REVISION_NUMBER_MASK) >> 5;
1486 if (rev_num <= 1)
1487 ppc7d_has_alma = 1;
1488
1489 #ifdef DEBUG
1490 console_printk[0] = 8;
1491 #endif
1492 }
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