2 * BRIEF MODULE DESCRIPTION
3 * Momentum Computer Jaguar-ATX board dependent boot routines
5 * Copyright (C) 1996, 1997, 2001 Ralf Baechle
6 * Copyright (C) 2000 RidgeRun, Inc.
7 * Copyright (C) 2001 Red Hat, Inc.
8 * Copyright (C) 2002 Momentum Computer
10 * Author: Matthew Dharm, Momentum Computer
13 * Louis Hamilton, Red Hat, Inc.
14 * hamilton@redhat.com [MIPS64 modifications]
16 * Author: RidgeRun, Inc.
17 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
19 * Copyright 2001 MontaVista Software Inc.
20 * Author: jsun@mvista.com or jsun@junsun.net
22 * This program is free software; you can redistribute it and/or modify it
23 * under the terms of the GNU General Public License as published by the
24 * Free Software Foundation; either version 2 of the License, or (at your
25 * option) any later version.
27 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
28 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
29 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
30 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
31 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
32 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
33 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
34 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
36 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 * You should have received a copy of the GNU General Public License along
39 * with this program; if not, write to the Free Software Foundation, Inc.,
40 * 675 Mass Ave, Cambridge, MA 02139, USA.
42 #include <linux/config.h>
43 #include <linux/bcd.h>
44 #include <linux/init.h>
45 #include <linux/kernel.h>
46 #include <linux/types.h>
48 #include <linux/bootmem.h>
49 #include <linux/swap.h>
50 #include <linux/ioport.h>
51 #include <linux/sched.h>
52 #include <linux/interrupt.h>
53 #include <linux/timex.h>
54 #include <linux/vmalloc.h>
56 #include <asm/bootinfo.h>
61 #include <asm/pci_channel.h>
62 #include <asm/processor.h>
63 #include <asm/ptrace.h>
64 #include <asm/reboot.h>
65 #include <asm/tlbflush.h>
66 #include <asm/mv64340.h>
68 #include "jaguar_atx_fpga.h"
70 extern unsigned long mv64340_sram_base;
71 unsigned long cpu_clock;
73 /* These functions are used for rebooting or halting the machine*/
74 extern void momenco_jaguar_restart(char *command);
75 extern void momenco_jaguar_halt(void);
76 extern void momenco_jaguar_power_off(void);
78 void momenco_time_init(void);
80 static char reset_reason;
82 static inline unsigned long ENTRYLO(unsigned long paddr)
84 return ((paddr & PAGE_MASK) |
85 (_PAGE_PRESENT | __READABLE | __WRITEABLE | _PAGE_GLOBAL |
86 _CACHE_UNCACHED)) >> 6;
89 void __init bus_error_init(void) { /* nothing */ }
92 * Load a few TLB entries for the MV64340 and perhiperals. The MV64340 is going
93 * to be hit on every IRQ anyway - there's absolutely no point in letting it be
94 * a random TLB entry, as it'll just cause needless churning of the TLB. And we
95 * use the other half for the serial port, which is just a PITA otherwise :)
97 * Device Physical Virtual
98 * MV64340 Internal Regs 0xf4000000 0xf4000000
99 * Ocelot-C[S] PLD (CS0) 0xfc000000 0xfc000000
100 * NVRAM (CS1) 0xfc800000 0xfc800000
101 * UARTs (CS2) 0xfd000000 0xfd000000
102 * Internal SRAM 0xfe000000 0xfe000000
103 * M-Systems DOC (CS3) 0xff000000 0xff000000
106 static __init void wire_stupidity_into_tlb(void)
110 local_flush_tlb_all();
112 /* marvell and extra space */
113 add_wired_entry(ENTRYLO(0xf4000000), ENTRYLO(0xf4010000),
114 0xf4000000UL, PM_64K);
115 /* fpga, rtc, and uart */
116 add_wired_entry(ENTRYLO(0xfc000000), ENTRYLO(0xfd000000),
117 0xfc000000UL, PM_16M);
118 // /* m-sys and internal SRAM */
119 // add_wired_entry(ENTRYLO(0xfe000000), ENTRYLO(0xff000000),
120 // 0xfe000000UL, PM_16M);
122 mv64340_base = 0xf4000000;
123 //mv64340_sram_base = 0xfe000000; /* Currently unused */
127 unsigned long mv64340_base = 0xf4000000L;
128 unsigned long ja_fpga_base = JAGUAR_ATX_CS0_ADDR;
129 unsigned long uart_base = 0xfd000000L;
130 static unsigned char *rtc_base = (unsigned char*) 0xfc800000L;
132 static __init int per_cpu_mappings(void)
134 mv64340_base = (unsigned long) ioremap(0xf4000000, 0x10000);
135 ja_fpga_base = (unsigned long) ioremap(JAGUAR_ATX_CS0_ADDR, 0x1000);
136 uart_base = (unsigned long) ioremap(0xfd000000UL, 0x1000);
137 rtc_base = ioremap(0xfc000000UL, 0x8000);
138 // ioremap(0xfe000000, 32 << 20);
140 local_flush_tlb_all();
145 arch_initcall(per_cpu_mappings);
147 unsigned long m48t37y_get_time(void)
149 unsigned int year, month, day, hour, min, sec;
151 /* stop the update */
152 rtc_base[0x7ff8] = 0x40;
154 year = BCD2BIN(rtc_base[0x7fff]);
155 year += BCD2BIN(rtc_base[0x7ff1]) * 100;
157 month = BCD2BIN(rtc_base[0x7ffe]);
159 day = BCD2BIN(rtc_base[0x7ffd]);
161 hour = BCD2BIN(rtc_base[0x7ffb]);
162 min = BCD2BIN(rtc_base[0x7ffa]);
163 sec = BCD2BIN(rtc_base[0x7ff9]);
165 /* start the update */
166 rtc_base[0x7ff8] = 0x00;
168 return mktime(year, month, day, hour, min, sec);
171 int m48t37y_set_time(unsigned long sec)
175 /* convert to a more useful format -- note months count from 0 */
180 rtc_base[0x7ff8] = 0x80;
183 rtc_base[0x7fff] = BIN2BCD(tm.tm_year % 100);
184 rtc_base[0x7ff1] = BIN2BCD(tm.tm_year / 100);
187 rtc_base[0x7ffe] = BIN2BCD(tm.tm_mon);
190 rtc_base[0x7ffd] = BIN2BCD(tm.tm_mday);
193 rtc_base[0x7ffb] = BIN2BCD(tm.tm_hour);
194 rtc_base[0x7ffa] = BIN2BCD(tm.tm_min);
195 rtc_base[0x7ff9] = BIN2BCD(tm.tm_sec);
197 /* day of week -- not really used, but let's keep it up-to-date */
198 rtc_base[0x7ffc] = BIN2BCD(tm.tm_wday + 1);
200 /* disable writing */
201 rtc_base[0x7ff8] = 0x00;
206 void momenco_timer_setup(struct irqaction *irq)
212 * Ugly but the least of all evils. TLB initialization did flush the TLB so
213 * We need to setup mappings again before we can touch the RTC.
215 void momenco_time_init(void)
217 wire_stupidity_into_tlb();
219 mips_hpt_frequency = cpu_clock / 2;
220 board_timer_setup = momenco_timer_setup;
222 rtc_get_time = m48t37y_get_time;
223 rtc_set_time = m48t37y_set_time;
226 static struct resource mv_pci_io_mem0_resource = {
227 .name = "MV64340 PCI0 IO MEM",
228 .flags = IORESOURCE_IO
231 static struct resource mv_pci_mem0_resource = {
232 .name = "MV64340 PCI0 MEM",
233 .flags = IORESOURCE_MEM
236 extern struct pci_ops mv64340_bus0_pci_ops;
238 static struct pci_controller mv_bus0_controller = {
239 .pci_ops = &mv64340_bus0_pci_ops,
240 .mem_resource = &mv_pci_mem0_resource,
241 .io_resource = &mv_pci_io_mem0_resource,
244 static uint32_t mv_io_base, mv_io_size;
246 static void ja_pci0_init(void)
248 uint32_t mem0_base, mem0_size;
249 uint32_t io_base, io_size;
251 io_base = MV_READ(MV64340_PCI_0_IO_BASE_ADDR) << 16;
252 io_size = (MV_READ(MV64340_PCI_0_IO_SIZE) + 1) << 16;
253 mem0_base = MV_READ(MV64340_PCI_0_MEMORY0_BASE_ADDR) << 16;
254 mem0_size = (MV_READ(MV64340_PCI_0_MEMORY0_SIZE) + 1) << 16;
256 mv_pci_io_mem0_resource.start = 0;
257 mv_pci_io_mem0_resource.end = io_size - 1;
258 mv_pci_mem0_resource.start = mem0_base;
259 mv_pci_mem0_resource.end = mem0_base + mem0_size - 1;
260 mv_bus0_controller.mem_offset = mem0_base;
261 mv_bus0_controller.io_offset = 0;
263 ioport_resource.end = io_size - 1;
265 register_pci_controller(&mv_bus0_controller);
267 mv_io_base = io_base;
268 mv_io_size = io_size;
271 static struct resource mv_pci_io_mem1_resource = {
272 .name = "MV64340 PCI1 IO MEM",
273 .flags = IORESOURCE_IO
276 static struct resource mv_pci_mem1_resource = {
277 .name = "MV64340 PCI1 MEM",
278 .flags = IORESOURCE_MEM
281 extern struct pci_ops mv64340_bus1_pci_ops;
283 static struct pci_controller mv_bus1_controller = {
284 .pci_ops = &mv64340_bus1_pci_ops,
285 .mem_resource = &mv_pci_mem1_resource,
286 .io_resource = &mv_pci_io_mem1_resource,
289 static __init void ja_pci1_init(void)
291 uint32_t mem0_base, mem0_size;
292 uint32_t io_base, io_size;
294 io_base = MV_READ(MV64340_PCI_1_IO_BASE_ADDR) << 16;
295 io_size = (MV_READ(MV64340_PCI_1_IO_SIZE) + 1) << 16;
296 mem0_base = MV_READ(MV64340_PCI_1_MEMORY0_BASE_ADDR) << 16;
297 mem0_size = (MV_READ(MV64340_PCI_1_MEMORY0_SIZE) + 1) << 16;
300 * Here we assume the I/O window of second bus to be contiguous with
301 * the first. A gap is no problem but would waste address space for
302 * remapping the port space.
304 mv_pci_io_mem1_resource.start = mv_io_size;
305 mv_pci_io_mem1_resource.end = mv_io_size + io_size - 1;
306 mv_pci_mem1_resource.start = mem0_base;
307 mv_pci_mem1_resource.end = mem0_base + mem0_size - 1;
308 mv_bus1_controller.mem_offset = mem0_base;
309 mv_bus1_controller.io_offset = 0;
311 ioport_resource.end = io_base + io_size -mv_io_base - 1;
313 register_pci_controller(&mv_bus1_controller);
315 mv_io_size = io_base + io_size - mv_io_base;
318 static __init int __init ja_pci_init(void)
320 unsigned long io_v_base;
323 enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE);
326 * We require at least one enabled I/O or PCI memory window or we
327 * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3.
329 if (enable & (0x01 << 9) || enable & (0x01 << 10))
332 if (enable & (0x01 << 14) || enable & (0x01 << 15))
336 io_v_base = (unsigned long) ioremap(mv_io_base, mv_io_size);
338 panic("Could not ioremap I/O port range");
340 set_io_port_base(io_v_base);
346 arch_initcall(ja_pci_init);
348 static int __init momenco_jaguar_atx_setup(void)
350 unsigned int tmpword;
352 board_time_init = momenco_time_init;
354 _machine_restart = momenco_jaguar_restart;
355 _machine_halt = momenco_jaguar_halt;
356 _machine_power_off = momenco_jaguar_power_off;
359 * initrd_start = (ulong)jaguar_initrd_start;
360 * initrd_end = (ulong)jaguar_initrd_start + (ulong)jaguar_initrd_size;
361 * initrd_below_start_ok = 1;
364 wire_stupidity_into_tlb();
367 * shut down ethernet ports, just to be sure our memory doesn't get
368 * corrupted by random ethernet traffic.
370 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0), 0xff << 8);
371 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1), 0xff << 8);
372 MV_WRITE(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2), 0xff << 8);
373 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0), 0xff << 8);
374 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1), 0xff << 8);
375 MV_WRITE(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2), 0xff << 8);
376 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(0)) & 0xff);
377 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(1)) & 0xff);
378 while (MV_READ(MV64340_ETH_RECEIVE_QUEUE_COMMAND_REG(2)) & 0xff);
379 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(0)) & 0xff);
380 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(1)) & 0xff);
381 while (MV_READ(MV64340_ETH_TRANSMIT_QUEUE_COMMAND_REG(2)) & 0xff);
382 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0),
383 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(0)) & ~1);
384 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1),
385 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(1)) & ~1);
386 MV_WRITE(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2),
387 MV_READ(MV64340_ETH_PORT_SERIAL_CONTROL_REG(2)) & ~1);
389 /* Turn off the Bit-Error LED */
390 JAGUAR_FPGA_WRITE(0x80, CLR);
392 tmpword = JAGUAR_FPGA_READ(BOARDREV);
394 printk("Momentum Jaguar-ATX: Board Assembly Rev. %c\n",
397 printk("Momentum Jaguar-ATX: Board Assembly Revision #0x%x\n",
400 tmpword = JAGUAR_FPGA_READ(FPGA_REV);
401 printk("FPGA Rev: %d.%d\n", tmpword>>4, tmpword&15);
402 tmpword = JAGUAR_FPGA_READ(RESET_STATUS);
403 printk("Reset reason: 0x%x\n", tmpword);
406 printk(" - Power-up reset\n");
409 printk(" - Push-button reset\n");
412 printk(" - Watchdog reset\n");
415 printk(" - JTAG reset\n");
418 printk(" - Unknown reset cause\n");
420 reset_reason = tmpword;
421 JAGUAR_FPGA_WRITE(0xff, RESET_STATUS);
423 tmpword = JAGUAR_FPGA_READ(BOARD_STATUS);
424 printk("Board Status register: 0x%02x\n", tmpword);
425 printk(" - User jumper: %s\n", (tmpword & 0x80)?"installed":"absent");
426 printk(" - Boot flash write jumper: %s\n", (tmpword&0x40)?"installed":"absent");
428 /* 256MiB of RM9000x2 DDR */
429 // add_memory_region(0x0, 0x100<<20, BOOT_MEM_RAM);
431 /* 128MiB of MV-64340 DDR */
432 // add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM);
434 /* XXX Memory configuration should be picked up from PMON2k */
435 #ifdef CONFIG_JAGUAR_DMALOW
436 printk("Jaguar ATX DMA-low mode set\n");
437 add_memory_region(0x00000000, 0x08000000, BOOT_MEM_RAM);
438 add_memory_region(0x08000000, 0x10000000, BOOT_MEM_RAM);
440 /* 128MiB of MV-64340 DDR RAM */
441 printk("Jaguar ATX DMA-low mode is not set\n");
442 add_memory_region(0x100<<20, 0x80<<20, BOOT_MEM_RAM);
445 #ifdef GEMDEBUG_TRACEBUFFER
447 unsigned int tbControl;
449 0 << 26 | /* post trigger delay 0 */
450 0x2 << 16 | /* sequential trace mode */
451 // 0x0 << 16 | /* non-sequential trace mode */
452 // 0xf << 4 | /* watchpoints disabled */
454 2 ; /* interrupt disabled */
455 printk ("setting tbControl = %08lx\n", tbControl);
456 write_32bit_cp0_set1_register($22, tbControl);
457 __asm__ __volatile__(".set noreorder\n\t" \
458 "nop; nop; nop; nop; nop; nop;\n\t" \
459 "nop; nop; nop; nop; nop; nop;\n\t" \
468 early_initcall(momenco_jaguar_atx_setup);