2 * Toshiba rbtx4927 specific setup
4 * Author: MontaVista Software, Inc.
7 * Copyright 2001-2002 MontaVista Software Inc.
9 * Copyright (C) 1996, 97, 2001, 04 Ralf Baechle (ralf@linux-mips.org)
10 * Copyright (C) 2000 RidgeRun, Inc.
11 * Author: RidgeRun, Inc.
12 * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
14 * Copyright 2001 MontaVista Software Inc.
15 * Author: jsun@mvista.com or jsun@junsun.net
17 * Copyright 2002 MontaVista Software Inc.
18 * Author: Michael Pruznick, michael_pruznick@mvista.com
20 * Copyright (C) 2000-2001 Toshiba Corporation
22 * Copyright (C) 2004 MontaVista Software Inc.
23 * Author: Manish Lachwani, mlachwani@mvista.com
25 * This program is free software; you can redistribute it and/or modify it
26 * under the terms of the GNU General Public License as published by the
27 * Free Software Foundation; either version 2 of the License, or (at your
28 * option) any later version.
30 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
31 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
32 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
33 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
34 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
35 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
36 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
37 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
38 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
39 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
41 * You should have received a copy of the GNU General Public License along
42 * with this program; if not, write to the Free Software Foundation, Inc.,
43 * 675 Mass Ave, Cambridge, MA 02139, USA.
45 #include <linux/init.h>
46 #include <linux/kernel.h>
47 #include <linux/types.h>
48 #include <linux/ioport.h>
49 #include <linux/platform_device.h>
50 #include <linux/delay.h>
51 #include <linux/gpio.h>
52 #include <linux/leds.h>
54 #include <asm/reboot.h>
55 #include <asm/txx9/generic.h>
56 #include <asm/txx9/pci.h>
57 #include <asm/txx9/rbtx4927.h>
58 #include <asm/txx9/tx4938.h> /* for TX4937 */
61 static void __init tx4927_pci_setup(void)
63 int extarb = !(__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCIARB);
64 struct pci_controller *c = &txx9_primary_pcic;
66 register_pci_controller(c);
68 if (__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCI66)
70 (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
71 TXX9_PCI_OPT_CLK_66; /* already configured */
74 writeb(1, rbtx4927_pcireset_addr);
76 txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
77 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
79 tx4927_pciclk66_setup();
81 /* clear PCIC reset */
82 txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
83 writeb(0, rbtx4927_pcireset_addr);
86 tx4927_report_pciclk();
87 tx4927_pcic_setup(tx4927_pcicptr, c, extarb);
88 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
89 TXX9_PCI_OPT_CLK_AUTO &&
90 txx9_pci66_check(c, 0, 0)) {
92 writeb(1, rbtx4927_pcireset_addr);
94 txx9_set64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
95 tx4927_pciclk66_setup();
97 /* clear PCIC reset */
98 txx9_clear64(&tx4927_ccfgptr->clkctr, TX4927_CLKCTR_PCIRST);
99 writeb(0, rbtx4927_pcireset_addr);
101 /* Reinitialize PCIC */
102 tx4927_report_pciclk();
103 tx4927_pcic_setup(tx4927_pcicptr, c, extarb);
105 tx4927_setup_pcierr_irq();
108 static void __init tx4937_pci_setup(void)
110 int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
111 struct pci_controller *c = &txx9_primary_pcic;
113 register_pci_controller(c);
115 if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
117 (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
118 TXX9_PCI_OPT_CLK_66; /* already configured */
121 writeb(1, rbtx4927_pcireset_addr);
123 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
124 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
126 tx4938_pciclk66_setup();
128 /* clear PCIC reset */
129 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
130 writeb(0, rbtx4927_pcireset_addr);
133 tx4938_report_pciclk();
134 tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
135 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
136 TXX9_PCI_OPT_CLK_AUTO &&
137 txx9_pci66_check(c, 0, 0)) {
139 writeb(1, rbtx4927_pcireset_addr);
141 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
142 tx4938_pciclk66_setup();
144 /* clear PCIC reset */
145 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
146 writeb(0, rbtx4927_pcireset_addr);
148 /* Reinitialize PCIC */
149 tx4938_report_pciclk();
150 tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
152 tx4938_setup_pcierr_irq();
155 static void __init rbtx4927_arch_init(void)
160 static void __init rbtx4937_arch_init(void)
165 #define rbtx4927_arch_init NULL
166 #define rbtx4937_arch_init NULL
167 #endif /* CONFIG_PCI */
169 static void toshiba_rbtx4927_restart(char *command)
171 /* enable the s/w reset register */
172 writeb(1, rbtx4927_softresetlock_addr);
174 /* wait for enable to be seen */
175 while (!(readb(rbtx4927_softresetlock_addr) & 1))
179 writeb(1, rbtx4927_softreset_addr);
185 static void __init rbtx4927_clock_init(void);
186 static void __init rbtx4937_clock_init(void);
188 static void __init rbtx4927_mem_setup(void)
192 if (TX4927_REV_PCODE() == 0x4927) {
193 rbtx4927_clock_init();
196 rbtx4937_clock_init();
200 _machine_restart = toshiba_rbtx4927_restart;
203 txx9_alloc_pci_controller(&txx9_primary_pcic,
204 RBTX4927_PCIMEM, RBTX4927_PCIMEM_SIZE,
205 RBTX4927_PCIIO, RBTX4927_PCIIO_SIZE);
206 txx9_board_pcibios_setup = tx4927_pcibios_setup;
208 set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
211 /* TX4927-SIO DTR on (PIO[15]) */
212 gpio_request(15, "sio-dtr");
213 gpio_direction_output(15, 1);
215 tx4927_sio_init(0, 0);
216 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
217 argptr = prom_getcmdline();
218 if (!strstr(argptr, "console="))
219 strcat(argptr, " console=ttyS0,38400");
223 static void __init rbtx4927_clock_init(void)
226 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
229 * PCIDIVMODE[12:11]'s initial value is given by S9[4:3] (ON:0, OFF:1).
230 * CPU 166MHz: PCI 66MHz : PCIDIVMODE: 00 (1/2.5)
231 * CPU 200MHz: PCI 66MHz : PCIDIVMODE: 01 (1/3)
232 * CPU 166MHz: PCI 33MHz : PCIDIVMODE: 10 (1/5)
233 * CPU 200MHz: PCI 33MHz : PCIDIVMODE: 11 (1/6)
234 * i.e. S9[3]: ON (83MHz), OFF (100MHz)
236 switch ((unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg) &
237 TX4927_CCFG_PCIDIVMODE_MASK) {
238 case TX4927_CCFG_PCIDIVMODE_2_5:
239 case TX4927_CCFG_PCIDIVMODE_5:
240 txx9_cpu_clock = 166666666; /* 166MHz */
243 txx9_cpu_clock = 200000000; /* 200MHz */
247 static void __init rbtx4937_clock_init(void)
250 * ASSUMPTION: PCIDIVMODE is configured for PCI 33MHz or 66MHz.
253 * PCIDIVMODE[12:11]'s initial value is given by S1[5:4] (ON:0, OFF:1)
254 * PCIDIVMODE[10] is 0.
255 * CPU 266MHz: PCI 33MHz : PCIDIVMODE: 000 (1/8)
256 * CPU 266MHz: PCI 66MHz : PCIDIVMODE: 001 (1/4)
257 * CPU 300MHz: PCI 33MHz : PCIDIVMODE: 010 (1/9)
258 * CPU 300MHz: PCI 66MHz : PCIDIVMODE: 011 (1/4.5)
259 * CPU 333MHz: PCI 33MHz : PCIDIVMODE: 100 (1/10)
260 * CPU 333MHz: PCI 66MHz : PCIDIVMODE: 101 (1/5)
262 switch ((unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg) &
263 TX4938_CCFG_PCIDIVMODE_MASK) {
264 case TX4938_CCFG_PCIDIVMODE_8:
265 case TX4938_CCFG_PCIDIVMODE_4:
266 txx9_cpu_clock = 266666666; /* 266MHz */
268 case TX4938_CCFG_PCIDIVMODE_9:
269 case TX4938_CCFG_PCIDIVMODE_4_5:
270 txx9_cpu_clock = 300000000; /* 300MHz */
273 txx9_cpu_clock = 333333333; /* 333MHz */
277 static void __init rbtx4927_time_init(void)
282 static void __init toshiba_rbtx4927_rtc_init(void)
284 struct resource res = {
285 .start = RBTX4927_BRAMRTC_BASE - IO_BASE,
286 .end = RBTX4927_BRAMRTC_BASE - IO_BASE + 0x800 - 1,
287 .flags = IORESOURCE_MEM,
289 platform_device_register_simple("rtc-ds1742", -1, &res, 1);
292 static void __init rbtx4927_ne_init(void)
294 struct resource res[] = {
296 .start = RBTX4927_RTL_8019_BASE,
297 .end = RBTX4927_RTL_8019_BASE + 0x20 - 1,
298 .flags = IORESOURCE_IO,
300 .start = RBTX4927_RTL_8019_IRQ,
301 .flags = IORESOURCE_IRQ,
304 platform_device_register_simple("ne", -1, res, ARRAY_SIZE(res));
307 static void __init rbtx4927_mtd_init(void)
311 for (i = 0; i < 2; i++)
315 static void __init rbtx4927_gpioled_init(void)
317 static struct gpio_led leds[] = {
318 { .name = "gpioled:green:0", .gpio = 0, .active_low = 1, },
319 { .name = "gpioled:green:1", .gpio = 1, .active_low = 1, },
321 static struct gpio_led_platform_data pdata = {
322 .num_leds = ARRAY_SIZE(leds),
325 struct platform_device *pdev = platform_device_alloc("leds-gpio", 0);
329 pdev->dev.platform_data = &pdata;
330 if (platform_device_add(pdev))
331 platform_device_put(pdev);
334 static void __init rbtx4927_device_init(void)
336 toshiba_rbtx4927_rtc_init();
340 txx9_iocled_init(RBTX4927_LED_ADDR - IO_BASE, -1, 3, 1, "green", NULL);
341 rbtx4927_gpioled_init();
344 struct txx9_board_vec rbtx4927_vec __initdata = {
345 .system = "Toshiba RBTX4927",
346 .prom_init = rbtx4927_prom_init,
347 .mem_setup = rbtx4927_mem_setup,
348 .irq_setup = rbtx4927_irq_setup,
349 .time_init = rbtx4927_time_init,
350 .device_init = rbtx4927_device_init,
351 .arch_init = rbtx4927_arch_init,
353 .pci_map_irq = rbtx4927_pci_map_irq,
356 struct txx9_board_vec rbtx4937_vec __initdata = {
357 .system = "Toshiba RBTX4937",
358 .prom_init = rbtx4927_prom_init,
359 .mem_setup = rbtx4927_mem_setup,
360 .irq_setup = rbtx4927_irq_setup,
361 .time_init = rbtx4927_time_init,
362 .device_init = rbtx4927_device_init,
363 .arch_init = rbtx4937_arch_init,
365 .pci_map_irq = rbtx4927_pci_map_irq,