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>
62 #include <asm/bootinfo.h>
66 #include <asm/processor.h>
67 #include <asm/ptrace.h>
68 #include <asm/reboot.h>
69 #include <asm/mc146818rtc.h>
70 #include <asm/tlbflush.h>
71 #include "ocelot_3_fpga.h"
73 /* Marvell Discovery Register Base */
74 unsigned long marvell_base = (signed)0xf4000000;
77 unsigned long cpu_clock;
80 unsigned char* rtc_base = (unsigned char*)(signed)0xfc800000;
83 unsigned long ocelot_fpga_base = (signed)0xfc000000;
86 unsigned long uart_base = (signed)0xfd000000;
89 * Marvell Discovery SRAM. This is one place where Ethernet
90 * Tx and Rx descriptors can be placed to improve performance
92 extern unsigned long mv64340_sram_base;
94 /* These functions are used for rebooting or halting the machine*/
95 extern void momenco_ocelot_restart(char *command);
96 extern void momenco_ocelot_halt(void);
97 extern void momenco_ocelot_power_off(void);
99 void momenco_time_init(void);
100 static char reset_reason;
102 void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1,
103 unsigned long entryhi, unsigned long pagemask);
105 static inline unsigned long ENTRYLO(unsigned long paddr)
107 return ((paddr & PAGE_MASK) |
108 (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL |
109 _CACHE_UNCACHED)) >> 6;
112 void __init bus_error_init(void)
118 * setup code for a handoff from a version 2 PMON 2000 PROM
120 void setup_wired_tlb_entries(void)
123 local_flush_tlb_all();
125 /* marvell and extra space */
126 add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000), (signed)0xf4000000, PM_64K);
128 /* fpga, rtc, and uart */
129 add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000), (signed)0xfc000000, PM_16M);
132 #define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10))
133 #define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4))
135 unsigned long m48t37y_get_time(void)
137 unsigned int year, month, day, hour, min, sec;
139 /* stop the update */
140 rtc_base[0x7ff8] = 0x40;
142 year = CONV_BCD_TO_BIN(rtc_base[0x7fff]);
143 year += CONV_BCD_TO_BIN(rtc_base[0x7ff1]) * 100;
145 month = CONV_BCD_TO_BIN(rtc_base[0x7ffe]);
147 day = CONV_BCD_TO_BIN(rtc_base[0x7ffd]);
149 hour = CONV_BCD_TO_BIN(rtc_base[0x7ffb]);
150 min = CONV_BCD_TO_BIN(rtc_base[0x7ffa]);
151 sec = CONV_BCD_TO_BIN(rtc_base[0x7ff9]);
153 /* start the update */
154 rtc_base[0x7ff8] = 0x00;
156 return mktime(year, month, day, hour, min, sec);
159 int m48t37y_set_time(unsigned long sec)
163 /* convert to a more useful format -- note months count from 0 */
168 rtc_base[0x7ff8] = 0x80;
171 rtc_base[0x7fff] = CONV_BIN_TO_BCD(tm.tm_year % 100);
172 rtc_base[0x7ff1] = CONV_BIN_TO_BCD(tm.tm_year / 100);
175 rtc_base[0x7ffe] = CONV_BIN_TO_BCD(tm.tm_mon);
178 rtc_base[0x7ffd] = CONV_BIN_TO_BCD(tm.tm_mday);
181 rtc_base[0x7ffb] = CONV_BIN_TO_BCD(tm.tm_hour);
182 rtc_base[0x7ffa] = CONV_BIN_TO_BCD(tm.tm_min);
183 rtc_base[0x7ff9] = CONV_BIN_TO_BCD(tm.tm_sec);
185 /* day of week -- not really used, but let's keep it up-to-date */
186 rtc_base[0x7ffc] = CONV_BIN_TO_BCD(tm.tm_wday + 1);
188 /* disable writing */
189 rtc_base[0x7ff8] = 0x00;
194 void momenco_timer_setup(struct irqaction *irq)
196 setup_irq(7, irq); /* Timer interrupt, unmask status IM7 */
199 void momenco_time_init(void)
201 setup_wired_tlb_entries();
204 * Ocelot-3 board has been built with both
205 * the Rm7900 and the Rm7065C
207 mips_hpt_frequency = cpu_clock / 2;
208 board_timer_setup = momenco_timer_setup;
210 rtc_get_time = m48t37y_get_time;
211 rtc_set_time = m48t37y_set_time;
215 * PCI Support for Ocelot-3
218 /* Bus #0 IO and MEM space */
219 #define OCELOT_3_PCI_IO_0_START 0xe0000000
220 #define OCELOT_3_PCI_IO_0_SIZE 0x08000000
221 #define OCELOT_3_PCI_MEM_0_START 0xc0000000
222 #define OCELOT_3_PCI_MEM_0_SIZE 0x10000000
224 /* Bus #1 IO and MEM space */
225 #define OCELOT_3_PCI_IO_1_START 0xe8000000
226 #define OCELOT_3_PCI_IO_1_SIZE 0x08000000
227 #define OCELOT_3_PCI_MEM_1_START 0xd0000000
228 #define OCELOT_3_PCI_MEM_1_SIZE 0x10000000
230 static struct resource mv_pci_io_mem0_resource = {
231 .name = "MV64340 PCI0 IO MEM",
232 .start = OCELOT_3_PCI_IO_0_START,
233 .end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE - 1,
234 .flags = IORESOURCE_IO,
237 static struct resource mv_pci_io_mem1_resource = {
238 .name = "MV64340 PCI1 IO MEM",
239 .start = OCELOT_3_PCI_IO_1_START,
240 .end = OCELOT_3_PCI_IO_1_START + OCELOT_3_PCI_IO_1_SIZE - 1,
241 .flags = IORESOURCE_IO,
244 static struct resource mv_pci_mem0_resource = {
245 .name = "MV64340 PCI0 MEM",
246 .start = OCELOT_3_PCI_MEM_0_START,
247 .end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE - 1,
248 .flags = IORESOURCE_MEM,
251 static struct resource mv_pci_mem1_resource = {
252 .name = "MV64340 PCI1 MEM",
253 .start = OCELOT_3_PCI_MEM_1_START,
254 .end = OCELOT_3_PCI_MEM_1_START + OCELOT_3_PCI_MEM_1_SIZE - 1,
255 .flags = IORESOURCE_MEM,
258 static struct mv_pci_controller mv_bus0_controller = {
260 .pci_ops = &mv_pci_ops,
261 .mem_resource = &mv_pci_mem0_resource,
262 .io_resource = &mv_pci_io_mem0_resource,
264 .config_addr = MV64340_PCI_0_CONFIG_ADDR,
265 .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG,
268 static struct mv_pci_controller mv_bus1_controller = {
270 .pci_ops = &mv_pci_ops,
271 .mem_resource = &mv_pci_mem1_resource,
272 .io_resource = &mv_pci_io_mem1_resource,
274 .config_addr = MV64340_PCI_1_CONFIG_ADDR,
275 .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG,
278 static __init int __init ja_pci_init(void)
281 extern int pci_probe_only;
283 /* PMON will assign PCI resources */
286 enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
288 * We require at least one enabled I/O or PCI memory window or we
289 * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
291 if (enable & (0x01 << 9) || enable & (0x01 << 10))
292 register_pci_controller(&mv_bus0_controller.pcic);
294 if (enable & (0x01 << 14) || enable & (0x01 << 15))
295 register_pci_controller(&mv_bus1_controller.pcic);
297 ioport_resource.end = OCELOT_3_PCI_IO_0_START + OCELOT_3_PCI_IO_0_SIZE +
298 OCELOT_3_PCI_IO_1_SIZE - 1;
300 iomem_resource.end = OCELOT_3_PCI_MEM_0_START + OCELOT_3_PCI_MEM_0_SIZE +
301 OCELOT_3_PCI_MEM_1_SIZE - 1;
303 set_io_port_base(OCELOT_3_PCI_IO_0_START); /* mips_io_port_base */
308 arch_initcall(ja_pci_init);
310 static int __init momenco_ocelot_3_setup(void)
312 unsigned int tmpword;
314 board_time_init = momenco_time_init;
316 _machine_restart = momenco_ocelot_restart;
317 _machine_halt = momenco_ocelot_halt;
318 _machine_power_off = momenco_ocelot_power_off;
320 /* Wired TLB entries */
321 setup_wired_tlb_entries();
323 /* shut down ethernet ports, just to be sure our memory doesn't get
324 * corrupted by random ethernet traffic.
326 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
327 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
328 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
329 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
331 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
333 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
335 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
337 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
338 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0),
339 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
340 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1),
341 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
343 /* Turn off the Bit-Error LED */
344 OCELOT_FPGA_WRITE(0x80, CLR);
346 tmpword = OCELOT_FPGA_READ(BOARDREV);
348 printk("Momenco Ocelot-3: Board Assembly Rev. %c\n",
351 printk("Momenco Ocelot-3: Board Assembly Revision #0x%x\n",
354 tmpword = OCELOT_FPGA_READ(FPGA_REV);
355 printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
356 tmpword = OCELOT_FPGA_READ(RESET_STATUS);
357 printk("Reset reason: 0x%x\n", tmpword);
360 printk(" - Power-up reset\n");
363 printk(" - Push-button reset\n");
366 printk(" - cPCI bus reset\n");
369 printk(" - Watchdog reset\n");
372 printk(" - Software reset\n");
375 printk(" - Unknown reset cause\n");
377 reset_reason = tmpword;
378 OCELOT_FPGA_WRITE(0xff, RESET_STATUS);
380 tmpword = OCELOT_FPGA_READ(CPCI_ID);
381 printk("cPCI ID register: 0x%02x\n", tmpword);
382 printk(" - Slot number: %d\n", tmpword & 0x1f);
383 printk(" - PCI bus present: %s\n", tmpword & 0x40 ? "yes" : "no");
384 printk(" - System Slot: %s\n", tmpword & 0x20 ? "yes" : "no");
386 tmpword = OCELOT_FPGA_READ(BOARD_STATUS);
387 printk("Board Status register: 0x%02x\n", tmpword);
388 printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
389 printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
390 printk(" - L3 cache size: %d MB\n", (1<<((tmpword&12) >> 2))&~1);
392 /* Support for 128 MB memory */
393 add_memory_region(0x0, 0x08000000, BOOT_MEM_RAM);
398 early_initcall(momenco_ocelot_3_setup);