2 * linux/arch/arm/mach-pxa/viper.c
4 * Support for the Arcom VIPER SBC.
7 * Created: Feb 03, 2003
8 * Copyright: Arcom Control Systems
10 * Maintained by Marc Zyngier <maz@misterjones.org>
11 * <marc.zyngier@altran.com>
14 * Author: Nicolas Pitre
15 * Created: Jun 15, 2001
16 * Copyright: MontaVista Software Inc.
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License version 2 as
20 * published by the Free Software Foundation.
23 #include <linux/types.h>
24 #include <linux/memory.h>
25 #include <linux/cpu.h>
26 #include <linux/cpufreq.h>
27 #include <linux/delay.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/interrupt.h>
32 #include <linux/major.h>
33 #include <linux/module.h>
35 #include <linux/sched.h>
36 #include <linux/gpio.h>
37 #include <linux/i2c-gpio.h>
38 #include <linux/serial_8250.h>
39 #include <linux/smc91x.h>
40 #include <linux/pwm_backlight.h>
41 #include <linux/usb/isp116x.h>
42 #include <linux/mtd/mtd.h>
43 #include <linux/mtd/partitions.h>
44 #include <linux/mtd/physmap.h>
46 #include <mach/pxa25x.h>
47 #include <mach/audio.h>
48 #include <mach/pxafb.h>
50 #include <mach/regs-uart.h>
51 #include <mach/arcom-pcmcia.h>
52 #include <mach/viper.h>
54 #include <asm/setup.h>
55 #include <asm/mach-types.h>
57 #include <asm/sizes.h>
59 #include <asm/mach/arch.h>
60 #include <asm/mach/map.h>
61 #include <asm/mach/irq.h>
66 static unsigned int icr;
68 static void viper_icr_set_bit(unsigned int bit)
74 static void viper_icr_clear_bit(unsigned int bit)
80 /* This function is used from the pcmcia module to reset the CF */
81 static void viper_cf_reset(int state)
84 viper_icr_set_bit(VIPER_ICR_CF_RST);
86 viper_icr_clear_bit(VIPER_ICR_CF_RST);
89 static struct arcom_pcmcia_pdata viper_pcmcia_info = {
90 .cd_gpio = VIPER_CF_CD_GPIO,
91 .rdy_gpio = VIPER_CF_RDY_GPIO,
92 .pwr_gpio = VIPER_CF_POWER_GPIO,
93 .reset = viper_cf_reset,
96 static struct platform_device viper_pcmcia_device = {
97 .name = "viper-pcmcia",
100 .platform_data = &viper_pcmcia_info,
105 * The CPLD version register was not present on VIPER boards prior to
106 * v2i1. On v1 boards where the version register is not present we
107 * will just read back the previous value from the databus.
109 * Therefore we do two reads. The first time we write 0 to the
110 * (read-only) register before reading and the second time we write
111 * 0xff first. If the two reads do not match or they read back as 0xff
112 * or 0x00 then we have version 1 hardware.
114 static u8 viper_hw_version(void)
119 local_irq_save(flags);
123 VIPER_VERSION = 0xff;
126 v1 = (v1 != v2 || v1 == 0xff) ? 0 : v1;
128 local_irq_restore(flags);
133 static int viper_cpu_suspend(struct sys_device *sysdev, pm_message_t state)
135 viper_icr_set_bit(VIPER_ICR_R_DIS);
139 static int viper_cpu_resume(struct sys_device *sysdev)
141 viper_icr_clear_bit(VIPER_ICR_R_DIS);
145 static struct sysdev_driver viper_cpu_sysdev_driver = {
146 .suspend = viper_cpu_suspend,
147 .resume = viper_cpu_resume,
150 static unsigned int current_voltage_divisor;
153 * If force is not true then step from existing to new divisor. If
154 * force is true then jump straight to the new divisor. Stepping is
155 * used because if the jump in voltage is too large, the VCC can dip
156 * too low and the regulator cuts out.
158 * force can be used to initialize the divisor to a know state by
159 * setting the value for the current clock speed, since we are already
160 * running at that speed we know the voltage should be pretty close so
161 * the jump won't be too large
163 static void viper_set_core_cpu_voltage(unsigned long khz, int force)
166 unsigned int divisor = 0;
170 v = "1.0"; divisor = 0xfff;
171 } else if (khz < 300000) {
172 v = "1.1"; divisor = 0xde5;
174 v = "1.3"; divisor = 0x325;
177 pr_debug("viper: setting CPU core voltage to %sV at %d.%03dMHz\n",
178 v, (int)khz / 1000, (int)khz % 1000);
186 else if (current_voltage_divisor < divisor - STEP)
187 step = current_voltage_divisor + STEP;
188 else if (current_voltage_divisor > divisor + STEP)
189 step = current_voltage_divisor - STEP;
194 gpio_set_value(VIPER_PSU_CLK_GPIO, 0);
195 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0);
197 for (i = 1 << 11 ; i > 0 ; i >>= 1) {
200 gpio_set_value(VIPER_PSU_DATA_GPIO, step & i);
203 gpio_set_value(VIPER_PSU_CLK_GPIO, 1);
206 gpio_set_value(VIPER_PSU_CLK_GPIO, 0);
210 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 1);
213 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0);
215 current_voltage_divisor = step;
216 } while (current_voltage_divisor != divisor);
219 /* Interrupt handling */
220 static unsigned long viper_irq_enabled_mask;
221 static const int viper_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, 9, 14, 15 };
222 static const int viper_isa_irq_map[] = {
223 0, /* ISA irq #0, invalid */
224 0, /* ISA irq #1, invalid */
225 0, /* ISA irq #2, invalid */
226 1 << 0, /* ISA irq #3 */
227 1 << 1, /* ISA irq #4 */
228 1 << 2, /* ISA irq #5 */
229 1 << 3, /* ISA irq #6 */
230 1 << 4, /* ISA irq #7 */
231 0, /* ISA irq #8, invalid */
232 1 << 8, /* ISA irq #9 */
233 1 << 5, /* ISA irq #10 */
234 1 << 6, /* ISA irq #11 */
235 1 << 7, /* ISA irq #12 */
236 0, /* ISA irq #13, invalid */
237 1 << 9, /* ISA irq #14 */
238 1 << 10, /* ISA irq #15 */
241 static inline int viper_irq_to_bitmask(unsigned int irq)
243 return viper_isa_irq_map[irq - PXA_ISA_IRQ(0)];
246 static inline int viper_bit_to_irq(int bit)
248 return viper_isa_irqs[bit] + PXA_ISA_IRQ(0);
251 static void viper_ack_irq(unsigned int irq)
253 int viper_irq = viper_irq_to_bitmask(irq);
255 if (viper_irq & 0xff)
256 VIPER_LO_IRQ_STATUS = viper_irq;
258 VIPER_HI_IRQ_STATUS = (viper_irq >> 8);
261 static void viper_mask_irq(unsigned int irq)
263 viper_irq_enabled_mask &= ~(viper_irq_to_bitmask(irq));
266 static void viper_unmask_irq(unsigned int irq)
268 viper_irq_enabled_mask |= viper_irq_to_bitmask(irq);
271 static inline unsigned long viper_irq_pending(void)
273 return (VIPER_HI_IRQ_STATUS << 8 | VIPER_LO_IRQ_STATUS) &
274 viper_irq_enabled_mask;
277 static void viper_irq_handler(unsigned int irq, struct irq_desc *desc)
279 unsigned long pending;
281 pending = viper_irq_pending();
283 /* we're in a chained irq handler,
284 * so ack the interrupt by hand */
285 desc->chip->ack(irq);
287 if (likely(pending)) {
288 irq = viper_bit_to_irq(__ffs(pending));
289 generic_handle_irq(irq);
291 pending = viper_irq_pending();
295 static struct irq_chip viper_irq_chip = {
297 .ack = viper_ack_irq,
298 .mask = viper_mask_irq,
299 .unmask = viper_unmask_irq
302 static void __init viper_init_irq(void)
310 for (level = 0; level < ARRAY_SIZE(viper_isa_irqs); level++) {
311 isa_irq = viper_bit_to_irq(level);
312 set_irq_chip(isa_irq, &viper_irq_chip);
313 set_irq_handler(isa_irq, handle_edge_irq);
314 set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
317 set_irq_chained_handler(gpio_to_irq(VIPER_CPLD_GPIO),
319 set_irq_type(gpio_to_irq(VIPER_CPLD_GPIO), IRQ_TYPE_EDGE_BOTH);
323 static struct pxafb_mode_info fb_mode_info[] = {
344 static struct pxafb_mach_info fb_info = {
345 .modes = fb_mode_info,
347 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
350 static int viper_backlight_init(struct device *dev)
354 /* GPIO9 and 10 control FB backlight. Initialise to off */
355 ret = gpio_request(VIPER_BCKLIGHT_EN_GPIO, "Backlight");
357 goto err_request_bckl;
359 ret = gpio_request(VIPER_LCD_EN_GPIO, "LCD");
361 goto err_request_lcd;
363 ret = gpio_direction_output(VIPER_BCKLIGHT_EN_GPIO, 0);
367 ret = gpio_direction_output(VIPER_LCD_EN_GPIO, 0);
374 gpio_free(VIPER_LCD_EN_GPIO);
376 gpio_free(VIPER_BCKLIGHT_EN_GPIO);
378 dev_err(dev, "Failed to setup LCD GPIOs\n");
383 static int viper_backlight_notify(struct device *dev, int brightness)
385 gpio_set_value(VIPER_LCD_EN_GPIO, !!brightness);
386 gpio_set_value(VIPER_BCKLIGHT_EN_GPIO, !!brightness);
391 static void viper_backlight_exit(struct device *dev)
393 gpio_free(VIPER_LCD_EN_GPIO);
394 gpio_free(VIPER_BCKLIGHT_EN_GPIO);
397 static struct platform_pwm_backlight_data viper_backlight_data = {
399 .max_brightness = 100,
400 .dft_brightness = 100,
401 .pwm_period_ns = 1000000,
402 .init = viper_backlight_init,
403 .notify = viper_backlight_notify,
404 .exit = viper_backlight_exit,
407 static struct platform_device viper_backlight_device = {
408 .name = "pwm-backlight",
410 .parent = &pxa25x_device_pwm0.dev,
411 .platform_data = &viper_backlight_data,
416 static struct resource smc91x_resources[] = {
418 .name = "smc91x-regs",
419 .start = VIPER_ETH_PHYS + 0x300,
420 .end = VIPER_ETH_PHYS + 0x30f,
421 .flags = IORESOURCE_MEM,
424 .start = gpio_to_irq(VIPER_ETH_GPIO),
425 .end = gpio_to_irq(VIPER_ETH_GPIO),
426 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
429 .name = "smc91x-data32",
430 .start = VIPER_ETH_DATA_PHYS,
431 .end = VIPER_ETH_DATA_PHYS + 3,
432 .flags = IORESOURCE_MEM,
436 static struct smc91x_platdata viper_smc91x_info = {
437 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
438 .leda = RPC_LED_100_10,
439 .ledb = RPC_LED_TX_RX,
442 static struct platform_device smc91x_device = {
445 .num_resources = ARRAY_SIZE(smc91x_resources),
446 .resource = smc91x_resources,
448 .platform_data = &viper_smc91x_info,
453 static struct i2c_gpio_platform_data i2c_bus_data = {
454 .sda_pin = VIPER_RTC_I2C_SDA_GPIO,
455 .scl_pin = VIPER_RTC_I2C_SCL_GPIO,
460 static struct platform_device i2c_bus_device = {
462 .id = 1, /* pxa2xx-i2c is bus 0, so start at 1 */
464 .platform_data = &i2c_bus_data,
468 static struct i2c_board_info __initdata viper_i2c_devices[] = {
470 I2C_BOARD_INFO("ds1338", 0x68),
475 * Serial configuration:
476 * You can either have the standard PXA ports driven by the PXA driver,
477 * or all the ports (PXA + 16850) driven by the 8250 driver.
478 * Choose your poison.
481 static struct resource viper_serial_resources[] = {
482 #ifndef CONFIG_SERIAL_PXA
486 .flags = IORESOURCE_MEM,
491 .flags = IORESOURCE_MEM,
496 .flags = IORESOURCE_MEM,
499 .start = VIPER_UARTA_PHYS,
500 .end = VIPER_UARTA_PHYS + 0xf,
501 .flags = IORESOURCE_MEM,
504 .start = VIPER_UARTB_PHYS,
505 .end = VIPER_UARTB_PHYS + 0xf,
506 .flags = IORESOURCE_MEM,
515 static struct plat_serial8250_port serial_platform_data[] = {
516 #ifndef CONFIG_SERIAL_PXA
519 .membase = (void *)&FFUART,
520 .mapbase = __PREG(FFUART),
522 .uartclk = 921600 * 16,
524 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
528 .membase = (void *)&BTUART,
529 .mapbase = __PREG(BTUART),
531 .uartclk = 921600 * 16,
533 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
537 .membase = (void *)&STUART,
538 .mapbase = __PREG(STUART),
540 .uartclk = 921600 * 16,
542 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
547 .mapbase = VIPER_UARTA_PHYS,
548 .irq = gpio_to_irq(VIPER_UARTA_GPIO),
549 .irqflags = IRQF_TRIGGER_RISING,
553 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP |
557 .mapbase = VIPER_UARTB_PHYS,
558 .irq = gpio_to_irq(VIPER_UARTB_GPIO),
559 .irqflags = IRQF_TRIGGER_RISING,
563 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP |
570 static struct platform_device serial_device = {
571 .name = "serial8250",
574 .platform_data = serial_platform_data,
576 .num_resources = ARRAY_SIZE(viper_serial_resources),
577 .resource = viper_serial_resources,
581 static void isp116x_delay(struct device *dev, int delay)
586 static struct resource isp116x_resources[] = {
588 .start = VIPER_USB_PHYS + 0,
589 .end = VIPER_USB_PHYS + 1,
590 .flags = IORESOURCE_MEM,
593 .start = VIPER_USB_PHYS + 2,
594 .end = VIPER_USB_PHYS + 3,
595 .flags = IORESOURCE_MEM,
598 .start = gpio_to_irq(VIPER_USB_GPIO),
599 .end = gpio_to_irq(VIPER_USB_GPIO),
600 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
604 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
605 static struct isp116x_platform_data isp116x_platform_data = {
606 /* Enable internal resistors on downstream ports */
608 /* On-chip overcurrent protection */
610 /* INT output polarity */
612 /* INT edge or level triggered */
613 .int_edge_triggered = 0,
615 /* WAKEUP pin connected - NOT SUPPORTED */
616 /* .remote_wakeup_connected = 0, */
617 /* Wakeup by devices on usb bus enabled */
618 .remote_wakeup_enable = 0,
619 .delay = isp116x_delay,
622 static struct platform_device isp116x_device = {
623 .name = "isp116x-hcd",
625 .num_resources = ARRAY_SIZE(isp116x_resources),
626 .resource = isp116x_resources,
628 .platform_data = &isp116x_platform_data,
634 static struct resource mtd_resources[] = {
635 [0] = { /* RedBoot config + filesystem flash */
636 .start = VIPER_FLASH_PHYS,
637 .end = VIPER_FLASH_PHYS + SZ_32M - 1,
638 .flags = IORESOURCE_MEM,
640 [1] = { /* Boot flash */
641 .start = VIPER_BOOT_PHYS,
642 .end = VIPER_BOOT_PHYS + SZ_1M - 1,
643 .flags = IORESOURCE_MEM,
646 * SRAM size is actually 256KB, 8bits, with a sparse mapping
647 * (each byte is on a 16bit boundary).
649 .start = _VIPER_SRAM_BASE,
650 .end = _VIPER_SRAM_BASE + SZ_512K - 1,
651 .flags = IORESOURCE_MEM,
655 static struct mtd_partition viper_boot_flash_partition = {
659 .mask_flags = MTD_WRITEABLE, /* force R/O */
662 static struct physmap_flash_data viper_flash_data[] = {
670 .parts = &viper_boot_flash_partition,
675 static struct platform_device viper_mtd_devices[] = {
677 .name = "physmap-flash",
680 .platform_data = &viper_flash_data[0],
682 .resource = &mtd_resources[0],
686 .name = "physmap-flash",
689 .platform_data = &viper_flash_data[1],
691 .resource = &mtd_resources[1],
696 static struct platform_device *viper_devs[] __initdata = {
701 &viper_mtd_devices[0],
702 &viper_mtd_devices[1],
703 &viper_backlight_device,
704 &viper_pcmcia_device,
707 static mfp_cfg_t viper_pin_config[] __initdata = {
717 GPIO29_AC97_SDATA_IN_0,
718 GPIO30_AC97_SDATA_OUT,
722 GPIO9_GPIO, /* VIPER_BCKLIGHT_EN_GPIO */
723 GPIO10_GPIO, /* VIPER_LCD_EN_GPIO */
726 /* Ethernet PHY Ready */
729 /* Serial shutdown */
730 GPIO12_GPIO | MFP_LPM_DRIVE_HIGH, /* VIPER_UART_SHDN_GPIO */
732 /* Compact-Flash / PC104 */
743 GPIO8_GPIO, /* VIPER_CF_RDY_GPIO */
744 GPIO32_GPIO, /* VIPER_CF_CD_GPIO */
745 GPIO82_GPIO, /* VIPER_CF_POWER_GPIO */
747 /* Integrated UPS control */
748 GPIO20_GPIO, /* VIPER_UPS_GPIO */
750 /* Vcc regulator control */
751 GPIO6_GPIO, /* VIPER_PSU_DATA_GPIO */
752 GPIO11_GPIO, /* VIPER_PSU_CLK_GPIO */
753 GPIO19_GPIO, /* VIPER_PSU_nCS_LD_GPIO */
756 GPIO26_GPIO, /* VIPER_TPM_I2C_SDA_GPIO */
757 GPIO27_GPIO, /* VIPER_TPM_I2C_SCL_GPIO */
758 GPIO83_GPIO, /* VIPER_RTC_I2C_SDA_GPIO */
759 GPIO84_GPIO, /* VIPER_RTC_I2C_SCL_GPIO */
761 /* PC/104 Interrupt */
762 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, /* VIPER_CPLD_GPIO */
765 static unsigned long viper_tpm;
767 static int __init viper_tpm_setup(char *str)
769 strict_strtoul(str, 10, &viper_tpm);
773 __setup("tpm=", viper_tpm_setup);
775 static void __init viper_tpm_init(void)
777 struct platform_device *tpm_device;
778 struct i2c_gpio_platform_data i2c_tpm_data = {
779 .sda_pin = VIPER_TPM_I2C_SDA_GPIO,
780 .scl_pin = VIPER_TPM_I2C_SCL_GPIO,
786 /* Allocate TPM i2c bus if requested */
790 tpm_device = platform_device_alloc("i2c-gpio", 2);
792 if (!platform_device_add_data(tpm_device,
794 sizeof(i2c_tpm_data))) {
795 if (platform_device_add(tpm_device)) {
796 errstr = "register TPM i2c bus";
800 errstr = "allocate TPM i2c bus data";
804 errstr = "allocate TPM i2c device";
813 pr_err("viper: Couldn't %s, giving up\n", errstr);
816 static void __init viper_init_vcore_gpios(void)
818 if (gpio_request(VIPER_PSU_DATA_GPIO, "PSU data"))
819 goto err_request_data;
821 if (gpio_request(VIPER_PSU_CLK_GPIO, "PSU clock"))
822 goto err_request_clk;
824 if (gpio_request(VIPER_PSU_nCS_LD_GPIO, "PSU cs"))
827 if (gpio_direction_output(VIPER_PSU_DATA_GPIO, 0) ||
828 gpio_direction_output(VIPER_PSU_CLK_GPIO, 0) ||
829 gpio_direction_output(VIPER_PSU_nCS_LD_GPIO, 0))
832 /* c/should assume redboot set the correct level ??? */
833 viper_set_core_cpu_voltage(get_clk_frequency_khz(0), 1);
838 gpio_free(VIPER_PSU_nCS_LD_GPIO);
840 gpio_free(VIPER_PSU_CLK_GPIO);
842 gpio_free(VIPER_PSU_DATA_GPIO);
844 pr_err("viper: Failed to setup vcore control GPIOs\n");
847 static void __init viper_init_serial_gpio(void)
849 if (gpio_request(VIPER_UART_SHDN_GPIO, "UARTs shutdown"))
852 if (gpio_direction_output(VIPER_UART_SHDN_GPIO, 0))
858 gpio_free(VIPER_UART_SHDN_GPIO);
860 pr_err("viper: Failed to setup UART shutdown GPIO\n");
863 #ifdef CONFIG_CPU_FREQ
864 static int viper_cpufreq_notifier(struct notifier_block *nb,
865 unsigned long val, void *data)
867 struct cpufreq_freqs *freq = data;
869 /* TODO: Adjust timings??? */
872 case CPUFREQ_PRECHANGE:
873 if (freq->old < freq->new) {
874 /* we are getting faster so raise the voltage
875 * before we change freq */
876 viper_set_core_cpu_voltage(freq->new, 0);
879 case CPUFREQ_POSTCHANGE:
880 if (freq->old > freq->new) {
881 /* we are slowing down so drop the power
882 * after we change freq */
883 viper_set_core_cpu_voltage(freq->new, 0);
886 case CPUFREQ_RESUMECHANGE:
887 viper_set_core_cpu_voltage(freq->new, 0);
897 static struct notifier_block viper_cpufreq_notifier_block = {
898 .notifier_call = viper_cpufreq_notifier
901 static void __init viper_init_cpufreq(void)
903 if (cpufreq_register_notifier(&viper_cpufreq_notifier_block,
904 CPUFREQ_TRANSITION_NOTIFIER))
905 pr_err("viper: Failed to setup cpufreq notifier\n");
908 static inline void viper_init_cpufreq(void) {}
911 static void viper_power_off(void)
913 pr_notice("Shutting off UPS\n");
914 gpio_set_value(VIPER_UPS_GPIO, 1);
915 /* Spin to death... */
919 static void __init viper_init(void)
923 pm_power_off = viper_power_off;
925 pxa2xx_mfp_config(ARRAY_AND_SIZE(viper_pin_config));
927 pxa_set_ffuart_info(NULL);
928 pxa_set_btuart_info(NULL);
929 pxa_set_stuart_info(NULL);
931 /* Wake-up serial console */
932 viper_init_serial_gpio();
934 set_pxa_fb_info(&fb_info);
936 /* v1 hardware cannot use the datacs line */
937 version = viper_hw_version();
939 smc91x_device.num_resources--;
941 pxa_set_i2c_info(NULL);
942 platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs));
944 viper_init_vcore_gpios();
945 viper_init_cpufreq();
947 sysdev_driver_register(&cpu_sysdev_class, &viper_cpu_sysdev_driver);
950 pr_info("viper: hardware v%di%d detected. "
951 "CPLD revision %d.\n",
952 VIPER_BOARD_VERSION(version),
953 VIPER_BOARD_ISSUE(version),
954 VIPER_CPLD_REVISION(version));
955 system_rev = (VIPER_BOARD_VERSION(version) << 8) |
956 (VIPER_BOARD_ISSUE(version) << 4) |
957 VIPER_CPLD_REVISION(version);
959 pr_info("viper: No version register.\n");
962 i2c_register_board_info(1, ARRAY_AND_SIZE(viper_i2c_devices));
965 pxa_set_ac97_info(NULL);
968 static struct map_desc viper_io_desc[] __initdata = {
970 .virtual = VIPER_CPLD_BASE,
971 .pfn = __phys_to_pfn(VIPER_CPLD_PHYS),
972 .length = 0x00300000,
976 .virtual = VIPER_PC104IO_BASE,
977 .pfn = __phys_to_pfn(0x30000000),
978 .length = 0x00800000,
983 static void __init viper_map_io(void)
987 iotable_init(viper_io_desc, ARRAY_SIZE(viper_io_desc));
992 MACHINE_START(VIPER, "Arcom/Eurotech VIPER SBC")
993 /* Maintainer: Marc Zyngier <maz@misterjones.org> */
994 .phys_io = 0x40000000,
995 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
996 .boot_params = 0xa0000100,
997 .map_io = viper_map_io,
998 .init_irq = viper_init_irq,
1000 .init_machine = viper_init,