4 * BRIEF MODULE DESCRIPTION
5 * Momentum Computer Ocelot-3 board dependent boot routines
7 * Copyright (C) 1996, 1997, 01, 05 Ralf Baechle
8 * Copyright (C) 2000 RidgeRun, Inc.
9 * Copyright (C) 2001 Red Hat, Inc.
10 * Copyright (C) 2002 Momentum Computer
12 * Author: Matthew Dharm, Momentum Computer
15 * Louis Hamilton, Red Hat, Inc.
16 * hamilton@redhat.com [MIPS64 modifications]
18 * Author: RidgeRun, Inc.
19 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
21 * Copyright 2001 MontaVista Software Inc.
22 * Author: jsun@mvista.com or jsun@junsun.net
24 * Copyright 2004 PMC-Sierra
25 * Author: Manish Lachwani (lachwani@pmc-sierra.com)
27 * Copyright (C) 2004 MontaVista Software Inc.
28 * Author: Manish Lachwani, mlachwani@mvista.com
30 * This program is free software; you can redistribute it and/or modify it
31 * under the terms of the GNU General Public License as published by the
32 * Free Software Foundation; either version 2 of the License, or (at your
33 * option) any later version.
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
37 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
38 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
39 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
40 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
41 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
42 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
44 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
46 * You should have received a copy of the GNU General Public License along
47 * with this program; if not, write to the Free Software Foundation, Inc.,
48 * 675 Mass Ave, Cambridge, MA 02139, USA.
50 #include <linux/init.h>
51 #include <linux/kernel.h>
52 #include <linux/types.h>
53 #include <linux/mc146818rtc.h>
54 #include <linux/ioport.h>
55 #include <linux/interrupt.h>
56 #include <linux/pci.h>
57 #include <linux/timex.h>
58 #include <linux/bootmem.h>
59 #include <linux/mv643xx.h>
61 #include <linux/bcd.h>
65 #include <asm/bootinfo.h>
69 #include <asm/processor.h>
70 #include <asm/ptrace.h>
71 #include <asm/reboot.h>
72 #include <asm/mc146818rtc.h>
73 #include <asm/tlbflush.h>
74 #include "ocelot_3_fpga.h"
76 /* Marvell Discovery Register Base */
77 unsigned long marvell_base = (signed)0xf4000000;
80 unsigned long cpu_clock;
83 unsigned char* rtc_base = (unsigned char*)(signed)0xfc800000;
86 unsigned long ocelot_fpga_base = (signed)0xfc000000;
89 unsigned long uart_base = (signed)0xfd000000;
92 * Marvell Discovery SRAM. This is one place where Ethernet
93 * Tx and Rx descriptors can be placed to improve performance
95 extern unsigned long mv64340_sram_base;
97 /* These functions are used for rebooting or halting the machine*/
98 extern void momenco_ocelot_restart(char *command);
99 extern void momenco_ocelot_halt(void);
100 extern void momenco_ocelot_power_off(void);
102 void momenco_time_init(void);
103 static char reset_reason;
105 void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
106 unsigned long entryhi, unsigned long pagemask);
108 static inline unsigned long ENTRYLO(unsigned long paddr)
110 return ((paddr & PAGE_MASK) |
111 (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL |
112 _CACHE_UNCACHED)) >> 6;
115 void __init bus_error_init(void)
121 * setup code for a handoff from a version 2 PMON 2000 PROM
123 void setup_wired_tlb_entries(void)
126 local_flush_tlb_all();
128 /* marvell and extra space */
129 add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), (signed)0xf4000000, PM_64K);
131 /* fpga, rtc, and uart */
132 add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), (signed)0xfc000000, PM_16M);
135 unsigned long m48t37y_get_time(void)
137 unsigned int year, month, day, hour, min, sec;
140 spin_lock_irqsave(&rtc_lock, flags);
141 /* stop the update */
142 rtc_base[0x7ff8] = 0x40;
144 year = BCD2BIN(rtc_base[0x7fff]);
145 year += BCD2BIN(rtc_base[0x7ff1]) * 100;
147 month = BCD2BIN(rtc_base[0x7ffe]);
149 day = BCD2BIN(rtc_base[0x7ffd]);
151 hour = BCD2BIN(rtc_base[0x7ffb]);
152 min = BCD2BIN(rtc_base[0x7ffa]);
153 sec = BCD2BIN(rtc_base[0x7ff9]);
155 /* start the update */
156 rtc_base[0x7ff8] = 0x00;
157 spin_unlock_irqrestore(&rtc_lock, flags);
159 return mktime(year, month, day, hour, min, sec);
162 int m48t37y_set_time(unsigned long sec)
167 /* convert to a more useful format -- note months count from 0 */
171 spin_lock_irqsave(&rtc_lock, flags);
173 rtc_base[0x7ff8] = 0x80;
176 rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100);
177 rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100);
180 rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon);
183 rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday);
186 rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour);
187 rtc_base[0x7ffa] = BIN2BCD(tm.tm_min);
188 rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec);
190 /* day of week -- not really used, but let's keep it up-to-date */
191 rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1);
193 /* disable writing */
194 rtc_base[0x7ff8] = 0x00;
195 spin_unlock_irqrestore(&rtc_lock, flags);
200 void __init plat_timer_setup(struct irqaction *irq)
202 setup_irq(7, irq); /* Timer interrupt, unmask status IM7 */
205 void momenco_time_init(void)
207 setup_wired_tlb_entries();
210 * Ocelot-3 board has been built with both
211 * the Rm7900 and the Rm7065C
213 mips_hpt_frequency = cpu_clock / 2;
215 rtc_mips_get_time = m48t37y_get_time;
216 rtc_mips_set_time = m48t37y_set_time;
220 * PCI Support for Ocelot-3
223 /* Bus #0 IO and MEM space */
224 #define OCELOT_3_PCI_IO_0_START 0xe0000000
225 #define OCELOT_3_PCI_IO_0_SIZE 0x08000000
226 #define OCELOT_3_PCI_MEM_0_START 0xc0000000
227 #define OCELOT_3_PCI_MEM_0_SIZE 0x10000000
229 /* Bus #1 IO and MEM space */
230 #define OCELOT_3_PCI_IO_1_START 0xe8000000
231 #define OCELOT_3_PCI_IO_1_SIZE 0x08000000
232 #define OCELOT_3_PCI_MEM_1_START 0xd0000000
233 #define OCELOT_3_PCI_MEM_1_SIZE 0x10000000
235 static struct resource mv_pci_io_mem0_resource = {
236 .name = "MV64340 PCI0 IO MEM",
237 .start = OCELOT_3_PCI_IO_0_START,
238 .end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE - 1,
239 .flags = IORESOURCE_IO,
242 static struct resource mv_pci_io_mem1_resource = {
243 .name = "MV64340 PCI1 IO MEM",
244 .start = OCELOT_3_PCI_IO_1_START,
245 .end = OCELOT_3_PCI_IO_1_START + OCELOT_3_PCI_IO_1_SIZE - 1,
246 .flags = IORESOURCE_IO,
249 static struct resource mv_pci_mem0_resource = {
250 .name = "MV64340 PCI0 MEM",
251 .start = OCELOT_3_PCI_MEM_0_START,
252 .end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE - 1,
253 .flags = IORESOURCE_MEM,
256 static struct resource mv_pci_mem1_resource = {
257 .name = "MV64340 PCI1 MEM",
258 .start = OCELOT_3_PCI_MEM_1_START,
259 .end = OCELOT_3_PCI_MEM_1_START + OCELOT_3_PCI_MEM_1_SIZE - 1,
260 .flags = IORESOURCE_MEM,
263 static struct mv_pci_controller mv_bus0_controller = {
265 .pci_ops = &mv_pci_ops,
266 .mem_resource = &mv_pci_mem0_resource,
267 .io_resource = &mv_pci_io_mem0_resource,
269 .config_addr = MV64340_PCI_0_CONFIG_ADDR,
270 .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG,
273 static struct mv_pci_controller mv_bus1_controller = {
275 .pci_ops = &mv_pci_ops,
276 .mem_resource = &mv_pci_mem1_resource,
277 .io_resource = &mv_pci_io_mem1_resource,
279 .config_addr = MV64340_PCI_1_CONFIG_ADDR,
280 .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG,
283 static __init int __init ja_pci_init(void)
286 extern int pci_probe_only;
288 /* PMON will assign PCI resources */
291 enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
293 * We require at least one enabled I/O or PCI memory window or we
294 * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
296 if (enable & (0x01 << 9) || enable & (0x01 << 10))
297 register_pci_controller(&mv_bus0_controller.pcic);
299 if (enable & (0x01 << 14) || enable & (0x01 << 15))
300 register_pci_controller(&mv_bus1_controller.pcic);
302 ioport_resource.end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE +
303 OCELOT_3_PCI_IO_1_SIZE - 1;
305 iomem_resource.end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE +
306 OCELOT_3_PCI_MEM_1_SIZE - 1;
308 set_io_port_base(OCELOT_3_PCI_IO_0_START); /* mips_io_port_base */
313 arch_initcall(ja_pci_init);
315 void __init plat_mem_setup(void)
317 unsigned int tmpword;
319 board_time_init = momenco_time_init;
321 _machine_restart = momenco_ocelot_restart;
322 _machine_halt = momenco_ocelot_halt;
323 pm_power_off = momenco_ocelot_power_off;
325 /* Wired TLB entries */
326 setup_wired_tlb_entries();
328 /* shut down ethernet ports, just to be sure our memory doesn't get
329 * corrupted by random ethernet traffic.
331 MV_WRITE(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
332 MV_WRITE(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
333 MV_WRITE(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
334 MV_WRITE(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
336 while (MV_READ(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
338 while (MV_READ(MV643XX_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
340 while (MV_READ(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
342 while (MV_READ(MV643XX_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
343 MV_WRITE(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(0),
344 MV_READ(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
345 MV_WRITE(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(1),
346 MV_READ(MV643XX_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
348 /* Turn off the Bit-Error LED */
349 OCELOT_FPGA_WRITE(0x80, CLR);
351 tmpword = OCELOT_FPGA_READ(BOARDREV);
353 printk("Momenco Ocelot-3: Board Assembly Rev. %c\n",
356 printk("Momenco Ocelot-3: Board Assembly Revision #0x%x\n",
359 tmpword = OCELOT_FPGA_READ(FPGA_REV);
360 printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
361 tmpword = OCELOT_FPGA_READ(RESET_STATUS);
362 printk("Reset reason: 0x%x\n", tmpword);
365 printk(" - Power-up reset\n");
368 printk(" - Push-button reset\n");
371 printk(" - cPCI bus reset\n");
374 printk(" - Watchdog reset\n");
377 printk(" - Software reset\n");
380 printk(" - Unknown reset cause\n");
382 reset_reason = tmpword;
383 OCELOT_FPGA_WRITE(0xff, RESET_STATUS);
385 tmpword = OCELOT_FPGA_READ(CPCI_ID);
386 printk("cPCI ID register: 0x%02x\n", tmpword);
387 printk(" - Slot number: %d\n", tmpword & 0x1f);
388 printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no");
389 printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no");
391 tmpword = OCELOT_FPGA_READ(BOARD_STATUS);
392 printk("Board Status register: 0x%02x\n", tmpword);
393 printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
394 printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
395 printk(" - L3 cache size: %d MB\n", (1<<((tmpword&12) >> 2))&~1);
397 /* Support for 128 MB memory */
398 add_memory_region(0x0, 0x08000000, BOOT_MEM_RAM);