2 * Setup pointers to hardware-dependent routines.
3 * Copyright (C) 2000-2001 Toshiba Corporation
5 * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
6 * terms of the GNU General Public License version 2. This program is
7 * licensed "as is" without any warranty of any kind, whether express
10 * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
12 #include <linux/init.h>
13 #include <linux/types.h>
14 #include <linux/ioport.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/console.h>
19 #include <linux/platform_device.h>
20 #include <linux/gpio.h>
22 #include <asm/reboot.h>
24 #include <asm/txx9/generic.h>
25 #include <asm/txx9/pci.h>
26 #include <asm/txx9/rbtx4938.h>
27 #include <linux/spi/spi.h>
28 #include <asm/txx9/spi.h>
29 #include <asm/txx9pio.h>
31 static void rbtx4938_machine_halt(void)
33 printk(KERN_NOTICE "System Halted\n");
37 __asm__(".set\tmips3\n\t"
42 static void rbtx4938_machine_power_off(void)
44 rbtx4938_machine_halt();
48 static void rbtx4938_machine_restart(char *command)
52 printk("Rebooting...");
53 writeb(1, rbtx4938_softresetlock_addr);
54 writeb(1, rbtx4938_sfvol_addr);
55 writeb(1, rbtx4938_softreset_addr);
60 static void __init rbtx4938_pci_setup(void)
63 int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
64 struct pci_controller *c = &txx9_primary_pcic;
66 register_pci_controller(c);
68 if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
70 (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
71 TXX9_PCI_OPT_CLK_66; /* already configured */
74 writeb(0, rbtx4938_pcireset_addr);
76 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
77 if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
79 tx4938_pciclk66_setup();
81 /* clear PCIC reset */
82 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
83 writeb(1, rbtx4938_pcireset_addr);
86 tx4938_report_pciclk();
87 tx4927_pcic_setup(tx4938_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(0, rbtx4938_pcireset_addr);
94 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
95 tx4938_pciclk66_setup();
97 /* clear PCIC reset */
98 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
99 writeb(1, rbtx4938_pcireset_addr);
101 /* Reinitialize PCIC */
102 tx4938_report_pciclk();
103 tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
106 if (__raw_readq(&tx4938_ccfgptr->pcfg) &
107 (TX4938_PCFG_ETH0_SEL|TX4938_PCFG_ETH1_SEL)) {
109 txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
110 /* PCI1DMD==0 => PCI1CLK==GBUSCLK/2 => PCI66 */
111 if (!(__raw_readq(&tx4938_ccfgptr->ccfg)
112 & TX4938_CCFG_PCI1DMD))
113 tx4938_ccfg_set(TX4938_CCFG_PCI1_66);
115 /* clear PCIC1 reset */
116 txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
117 tx4938_report_pci1clk();
119 /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
120 c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
121 register_pci_controller(c);
122 tx4927_pcic_setup(tx4938_pcic1ptr, c, 0);
124 tx4938_setup_pcierr_irq();
125 #endif /* CONFIG_PCI */
130 /* chip select for SPI devices */
131 #define SEEPROM1_CS 7 /* PIO7 */
132 #define SEEPROM2_CS 0 /* IOC */
133 #define SEEPROM3_CS 1 /* IOC */
134 #define SRTC_CS 2 /* IOC */
136 static int __init rbtx4938_ethaddr_init(void)
139 unsigned char dat[17];
143 /* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
144 if (spi_eeprom_read(SEEPROM1_CS, 0, dat, sizeof(dat))) {
145 printk(KERN_ERR "seeprom: read error.\n");
148 if (strcmp(dat, "MAC") != 0)
149 printk(KERN_WARNING "seeprom: bad signature.\n");
150 for (i = 0, sum = 0; i < sizeof(dat); i++)
153 printk(KERN_WARNING "seeprom: bad checksum.\n");
155 for (i = 0; i < 2; i++) {
157 TXX9_IRQ_BASE + (i ? TX4938_IR_ETH1 : TX4938_IR_ETH0);
158 struct platform_device *pdev;
159 if (!(__raw_readq(&tx4938_ccfgptr->pcfg) &
160 (i ? TX4938_PCFG_ETH1_SEL : TX4938_PCFG_ETH0_SEL)))
162 pdev = platform_device_alloc("tc35815-mac", id);
164 platform_device_add_data(pdev, &dat[4 + 6 * i], 6) ||
165 platform_device_add(pdev))
166 platform_device_put(pdev);
168 #endif /* CONFIG_PCI */
172 static void __init rbtx4938_spi_setup(void)
175 txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_SPI_SEL);
178 static struct resource rbtx4938_fpga_resource;
180 static void __init rbtx4938_time_init(void)
185 static void __init rbtx4938_mem_setup(void)
187 unsigned long long pcfg;
190 if (txx9_master_clock == 0)
191 txx9_master_clock = 25000000; /* 25MHz */
196 txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
197 txx9_board_pcibios_setup = tx4927_pcibios_setup;
199 set_io_port_base(RBTX4938_ETHER_BASE);
202 tx4938_setup_serial();
203 #ifdef CONFIG_SERIAL_TXX9_CONSOLE
204 argptr = prom_getcmdline();
205 if (strstr(argptr, "console=") == NULL) {
206 strcat(argptr, " console=ttyS0,38400");
210 #ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61
211 printk("PIOSEL: disabling both ata and nand selection\n");
213 txx9_clear64(&tx4938_ccfgptr->pcfg,
214 TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL);
217 #ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND
218 printk("PIOSEL: enabling nand selection\n");
219 txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
220 txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
223 #ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_ATA
224 printk("PIOSEL: enabling ata selection\n");
225 txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
226 txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
230 argptr = prom_getcmdline();
231 if (strstr(argptr, "ip=") == NULL) {
232 strcat(argptr, " ip=any");
239 conswitchp = &dummy_con;
243 rbtx4938_spi_setup();
244 pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg); /* updated */
246 if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
248 writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x04,
249 rbtx4938_piosel_addr);
250 else if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
252 writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x08,
253 rbtx4938_piosel_addr);
255 writeb(readb(rbtx4938_piosel_addr) & ~(0x08 | 0x04),
256 rbtx4938_piosel_addr);
258 rbtx4938_fpga_resource.name = "FPGA Registers";
259 rbtx4938_fpga_resource.start = CPHYSADDR(RBTX4938_FPGA_REG_ADDR);
260 rbtx4938_fpga_resource.end = CPHYSADDR(RBTX4938_FPGA_REG_ADDR) + 0xffff;
261 rbtx4938_fpga_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
262 if (request_resource(&txx9_ce_res[2], &rbtx4938_fpga_resource))
263 printk("request resource for fpga failed\n");
265 _machine_restart = rbtx4938_machine_restart;
266 _machine_halt = rbtx4938_machine_halt;
267 pm_power_off = rbtx4938_machine_power_off;
269 writeb(0xff, rbtx4938_led_addr);
270 printk(KERN_INFO "RBTX4938 --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
271 readb(rbtx4938_fpga_rev_addr),
272 readb(rbtx4938_dipsw_addr), readb(rbtx4938_bdipsw_addr));
275 static int __init rbtx4938_ne_init(void)
277 struct resource res[] = {
279 .start = RBTX4938_RTL_8019_BASE,
280 .end = RBTX4938_RTL_8019_BASE + 0x20 - 1,
281 .flags = IORESOURCE_IO,
283 .start = RBTX4938_RTL_8019_IRQ,
284 .flags = IORESOURCE_IRQ,
287 struct platform_device *dev =
288 platform_device_register_simple("ne", -1,
289 res, ARRAY_SIZE(res));
290 return IS_ERR(dev) ? PTR_ERR(dev) : 0;
293 static DEFINE_SPINLOCK(rbtx4938_spi_gpio_lock);
295 static void rbtx4938_spi_gpio_set(struct gpio_chip *chip, unsigned int offset,
300 spin_lock_irqsave(&rbtx4938_spi_gpio_lock, flags);
301 val = readb(rbtx4938_spics_addr);
305 val &= ~(1 << offset);
306 writeb(val, rbtx4938_spics_addr);
308 spin_unlock_irqrestore(&rbtx4938_spi_gpio_lock, flags);
311 static int rbtx4938_spi_gpio_dir_out(struct gpio_chip *chip,
312 unsigned int offset, int value)
314 rbtx4938_spi_gpio_set(chip, offset, value);
318 static struct gpio_chip rbtx4938_spi_gpio_chip = {
319 .set = rbtx4938_spi_gpio_set,
320 .direction_output = rbtx4938_spi_gpio_dir_out,
321 .label = "RBTX4938-SPICS",
328 static void __init txx9_spi_init(unsigned long base, int irq)
330 struct resource res[] = {
333 .end = base + 0x20 - 1,
334 .flags = IORESOURCE_MEM,
337 .flags = IORESOURCE_IRQ,
340 platform_device_register_simple("spi_txx9", 0,
341 res, ARRAY_SIZE(res));
344 static int __init rbtx4938_spi_init(void)
346 struct spi_board_info srtc_info = {
347 .modalias = "rtc-rs5c348",
348 .max_speed_hz = 1000000, /* 1.0Mbps @ Vdd 2.0V */
350 .chip_select = 16 + SRTC_CS,
351 /* Mode 1 (High-Active, Shift-Then-Sample), High Avtive CS */
352 .mode = SPI_MODE_1 | SPI_CS_HIGH,
354 spi_register_board_info(&srtc_info, 1);
355 spi_eeprom_register(SEEPROM1_CS);
356 spi_eeprom_register(16 + SEEPROM2_CS);
357 spi_eeprom_register(16 + SEEPROM3_CS);
358 gpio_request(16 + SRTC_CS, "rtc-rs5c348");
359 gpio_direction_output(16 + SRTC_CS, 0);
360 gpio_request(SEEPROM1_CS, "seeprom1");
361 gpio_direction_output(SEEPROM1_CS, 1);
362 gpio_request(16 + SEEPROM2_CS, "seeprom2");
363 gpio_direction_output(16 + SEEPROM2_CS, 1);
364 gpio_request(16 + SEEPROM3_CS, "seeprom3");
365 gpio_direction_output(16 + SEEPROM3_CS, 1);
366 txx9_spi_init(TX4938_SPI_REG & 0xfffffffffULL, RBTX4938_IRQ_IRC_SPI);
370 static void __init rbtx4938_arch_init(void)
372 gpiochip_add(&rbtx4938_spi_gpio_chip);
373 rbtx4938_pci_setup();
377 /* Watchdog support */
379 static int __init txx9_wdt_init(unsigned long base)
381 struct resource res = {
383 .end = base + 0x100 - 1,
384 .flags = IORESOURCE_MEM,
386 struct platform_device *dev =
387 platform_device_register_simple("txx9wdt", -1, &res, 1);
388 return IS_ERR(dev) ? PTR_ERR(dev) : 0;
391 static int __init rbtx4938_wdt_init(void)
393 return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL);
396 static void __init rbtx4938_device_init(void)
398 rbtx4938_ethaddr_init();
403 struct txx9_board_vec rbtx4938_vec __initdata = {
404 .system = "Toshiba RBTX4938",
405 .prom_init = rbtx4938_prom_init,
406 .mem_setup = rbtx4938_mem_setup,
407 .irq_setup = rbtx4938_irq_setup,
408 .time_init = rbtx4938_time_init,
409 .device_init = rbtx4938_device_init,
410 .arch_init = rbtx4938_arch_init,
412 .pci_map_irq = rbtx4938_pci_map_irq,