4 * BRIEF MODULE DESCRIPTION
5 * Momentum Computer Ocelot-3 board dependent boot routines
7 * Copyright (C) 1996, 1997, 2001 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/config.h>
51 #include <linux/init.h>
52 #include <linux/kernel.h>
53 #include <linux/types.h>
54 #include <linux/mc146818rtc.h>
55 #include <linux/ioport.h>
56 #include <linux/interrupt.h>
57 #include <linux/pci.h>
58 #include <linux/timex.h>
59 #include <linux/bootmem.h>
60 #include <linux/mv643xx.h>
63 #include <asm/bootinfo.h>
67 #include <asm/processor.h>
68 #include <asm/ptrace.h>
69 #include <asm/reboot.h>
70 #include <asm/mc146818rtc.h>
71 #include <asm/tlbflush.h>
72 #include "ocelot_3_fpga.h"
74 /* Marvell Discovery Register Base */
75 unsigned long marvell_base = (signed)0xf4000000;
78 unsigned long cpu_clock;
81 unsigned char* rtc_base = (unsigned char*)(signed)0xfc800000;
84 unsigned long ocelot_fpga_base = (signed)0xfc000000;
87 unsigned long uart_base = (signed)0xfd000000;
90 * Marvell Discovery SRAM. This is one place where Ethernet
91 * Tx and Rx descriptors can be placed to improve performance
93 extern unsigned long mv64340_sram_base;
95 /* These functions are used for rebooting or halting the machine*/
96 extern void momenco_ocelot_restart(char *command);
97 extern void momenco_ocelot_halt(void);
98 extern void momenco_ocelot_power_off(void);
100 void momenco_time_init(void);
101 static char reset_reason;
103 void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
104 unsigned long entryhi, unsigned long pagemask);
106 static inline unsigned long ENTRYLO(unsigned long paddr)
108 return ((paddr & PAGE_MASK) |
109 (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL |
110 _CACHE_UNCACHED)) >> 6;
113 void __init bus_error_init(void)
119 * setup code for a handoff from a version 2 PMON 2000 PROM
121 void setup_wired_tlb_entries(void)
124 local_flush_tlb_all();
126 /* marvell and extra space */
127 add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), (signed)0xf4000000, PM_64K);
129 /* fpga, rtc, and uart */
130 add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), (signed)0xfc000000, PM_16M);
133 #define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10))
134 #define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4))
136 unsigned long m48t37y_get_time(void)
138 unsigned int year, month, day, hour, min, sec;
140 /* stop the update */
141 rtc_base[0x7ff8] = 0x40;
143 year = CONV_BCD_TO_BIN(rtc_base[0x7fff]);
144 year += CONV_BCD_TO_BIN(rtc_base[0x7ff1]) * 100;
146 month = CONV_BCD_TO_BIN(rtc_base[0x7ffe]);
148 day = CONV_BCD_TO_BIN(rtc_base[0x7ffd]);
150 hour = CONV_BCD_TO_BIN(rtc_base[0x7ffb]);
151 min = CONV_BCD_TO_BIN(rtc_base[0x7ffa]);
152 sec = CONV_BCD_TO_BIN(rtc_base[0x7ff9]);
154 /* start the update */
155 rtc_base[0x7ff8] = 0x00;
157 return mktime(year, month, day, hour, min, sec);
160 int m48t37y_set_time(unsigned long sec)
164 /* convert to a more useful format -- note months count from 0 */
169 rtc_base[0x7ff8] = 0x80;
172 rtc_base[0x7fff] = CONV_BIN_TO_BCD(tm.tm_year % 100);
173 rtc_base[0x7ff1] = CONV_BIN_TO_BCD(tm.tm_year / 100);
176 rtc_base[0x7ffe] = CONV_BIN_TO_BCD(tm.tm_mon);
179 rtc_base[0x7ffd] = CONV_BIN_TO_BCD(tm.tm_mday);
182 rtc_base[0x7ffb] = CONV_BIN_TO_BCD(tm.tm_hour);
183 rtc_base[0x7ffa] = CONV_BIN_TO_BCD(tm.tm_min);
184 rtc_base[0x7ff9] = CONV_BIN_TO_BCD(tm.tm_sec);
186 /* day of week -- not really used, but let's keep it up-to-date */
187 rtc_base[0x7ffc] = CONV_BIN_TO_BCD(tm.tm_wday + 1);
189 /* disable writing */
190 rtc_base[0x7ff8] = 0x00;
195 void momenco_timer_setup(struct irqaction *irq)
197 setup_irq(7, irq); /* Timer interrupt, unmask status IM7 */
200 void momenco_time_init(void)
202 setup_wired_tlb_entries();
205 * Ocelot-3 board has been built with both
206 * the Rm7900 and the Rm7065C
208 mips_hpt_frequency = cpu_clock / 2;
209 board_timer_setup = momenco_timer_setup;
211 rtc_get_time = m48t37y_get_time;
212 rtc_set_time = m48t37y_set_time;
216 * PCI Support for Ocelot-3
219 /* Bus #0 IO and MEM space */
220 #define OCELOT_3_PCI_IO_0_START 0xe0000000
221 #define OCELOT_3_PCI_IO_0_SIZE 0x08000000
222 #define OCELOT_3_PCI_MEM_0_START 0xc0000000
223 #define OCELOT_3_PCI_MEM_0_SIZE 0x10000000
225 /* Bus #1 IO and MEM space */
226 #define OCELOT_3_PCI_IO_1_START 0xe8000000
227 #define OCELOT_3_PCI_IO_1_SIZE 0x08000000
228 #define OCELOT_3_PCI_MEM_1_START 0xd0000000
229 #define OCELOT_3_PCI_MEM_1_SIZE 0x10000000
231 static struct resource mv_pci_io_mem0_resource = {
232 .name = "MV64340 PCI0 IO MEM",
233 .start = OCELOT_3_PCI_IO_0_START,
234 .end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE - 1,
235 .flags = IORESOURCE_IO,
238 static struct resource mv_pci_io_mem1_resource = {
239 .name = "MV64340 PCI1 IO MEM",
240 .start = OCELOT_3_PCI_IO_1_START,
241 .end = OCELOT_3_PCI_IO_1_START + OCELOT_3_PCI_IO_1_SIZE - 1,
242 .flags = IORESOURCE_IO,
245 static struct resource mv_pci_mem0_resource = {
246 .name = "MV64340 PCI0 MEM",
247 .start = OCELOT_3_PCI_MEM_0_START,
248 .end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE - 1,
249 .flags = IORESOURCE_MEM,
252 static struct resource mv_pci_mem1_resource = {
253 .name = "MV64340 PCI1 MEM",
254 .start = OCELOT_3_PCI_MEM_1_START,
255 .end = OCELOT_3_PCI_MEM_1_START + OCELOT_3_PCI_MEM_1_SIZE - 1,
256 .flags = IORESOURCE_MEM,
259 static struct mv_pci_controller mv_bus0_controller = {
261 .pci_ops = &mv_pci_ops,
262 .mem_resource = &mv_pci_mem0_resource,
263 .io_resource = &mv_pci_io_mem0_resource,
265 .config_addr = MV64340_PCI_0_CONFIG_ADDR,
266 .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG,
269 static struct mv_pci_controller mv_bus1_controller = {
271 .pci_ops = &mv_pci_ops,
272 .mem_resource = &mv_pci_mem1_resource,
273 .io_resource = &mv_pci_io_mem1_resource,
275 .config_addr = MV64340_PCI_1_CONFIG_ADDR,
276 .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG,
279 static __init int __init ja_pci_init(void)
282 extern int pci_probe_only;
284 /* PMON will assign PCI resources */
287 enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
289 * We require at least one enabled I/O or PCI memory window or we
290 * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
292 if (enable & (0x01 << 9) || enable & (0x01 << 10))
293 register_pci_controller(&mv_bus0_controller.pcic);
295 if (enable & (0x01 << 14) || enable & (0x01 << 15))
296 register_pci_controller(&mv_bus1_controller.pcic);
298 ioport_resource.end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE +
299 OCELOT_3_PCI_IO_1_SIZE - 1;
301 iomem_resource.end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE +
302 OCELOT_3_PCI_MEM_1_SIZE - 1;
304 set_io_port_base(OCELOT_3_PCI_IO_0_START); /* mips_io_port_base */
309 arch_initcall(ja_pci_init);
311 static int __init momenco_ocelot_3_setup(void)
313 unsigned int tmpword;
315 board_time_init = momenco_time_init;
317 _machine_restart = momenco_ocelot_restart;
318 _machine_halt = momenco_ocelot_halt;
319 _machine_power_off = momenco_ocelot_power_off;
321 /* Wired TLB entries */
322 setup_wired_tlb_entries();
324 /* shut down ethernet ports, just to be sure our memory doesn't get
325 * corrupted by random ethernet traffic.
327 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
328 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
329 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
330 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
332 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
334 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
336 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
338 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
339 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0),
340 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
341 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1),
342 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
344 /* Turn off the Bit-Error LED */
345 OCELOT_FPGA_WRITE(0x80, CLR);
347 tmpword = OCELOT_FPGA_READ(BOARDREV);
349 printk("Momenco Ocelot-3: Board Assembly Rev. %c\n",
352 printk("Momenco Ocelot-3: Board Assembly Revision #0x%x\n",
355 tmpword = OCELOT_FPGA_READ(FPGA_REV);
356 printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
357 tmpword = OCELOT_FPGA_READ(RESET_STATUS);
358 printk("Reset reason: 0x%x\n", tmpword);
361 printk(" - Power-up reset\n");
364 printk(" - Push-button reset\n");
367 printk(" - cPCI bus reset\n");
370 printk(" - Watchdog reset\n");
373 printk(" - Software reset\n");
376 printk(" - Unknown reset cause\n");
378 reset_reason = tmpword;
379 OCELOT_FPGA_WRITE(0xff, RESET_STATUS);
381 tmpword = OCELOT_FPGA_READ(CPCI_ID);
382 printk("cPCI ID register: 0x%02x\n", tmpword);
383 printk(" - Slot number: %d\n", tmpword & 0x1f);
384 printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no");
385 printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no");
387 tmpword = OCELOT_FPGA_READ(BOARD_STATUS);
388 printk("Board Status register: 0x%02x\n", tmpword);
389 printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
390 printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
391 printk(" - L3 cache size: %d MB\n", (1<<((tmpword&12) >> 2))&~1);
393 /* Support for 128 MB memory */
394 add_memory_region(0x0, 0x08000000, BOOT_MEM_RAM);
399 early_initcall(momenco_ocelot_3_setup);