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/interrupt.h>
31 #include <linux/major.h>
32 #include <linux/module.h>
34 #include <linux/sched.h>
35 #include <linux/gpio.h>
36 #include <linux/i2c-gpio.h>
37 #include <linux/serial_8250.h>
38 #include <linux/smc91x.h>
39 #include <linux/pwm_backlight.h>
40 #include <linux/usb/isp116x.h>
41 #include <linux/mtd/mtd.h>
42 #include <linux/mtd/partitions.h>
43 #include <linux/mtd/physmap.h>
45 #include <mach/pxa25x.h>
46 #include <mach/audio.h>
47 #include <mach/pxafb.h>
49 #include <mach/regs-uart.h>
50 #include <mach/arcom-pcmcia.h>
51 #include <mach/viper.h>
53 #include <asm/setup.h>
54 #include <asm/mach-types.h>
56 #include <asm/sizes.h>
58 #include <asm/mach/arch.h>
59 #include <asm/mach/map.h>
60 #include <asm/mach/irq.h>
65 static unsigned int icr;
67 static void viper_icr_set_bit(unsigned int bit)
73 static void viper_icr_clear_bit(unsigned int bit)
79 /* This function is used from the pcmcia module to reset the CF */
80 static void viper_cf_reset(int state)
83 viper_icr_set_bit(VIPER_ICR_CF_RST);
85 viper_icr_clear_bit(VIPER_ICR_CF_RST);
88 static struct arcom_pcmcia_pdata viper_pcmcia_info = {
89 .cd_gpio = VIPER_CF_CD_GPIO,
90 .rdy_gpio = VIPER_CF_RDY_GPIO,
91 .pwr_gpio = VIPER_CF_POWER_GPIO,
92 .reset = viper_cf_reset,
95 static struct platform_device viper_pcmcia_device = {
96 .name = "viper-pcmcia",
99 .platform_data = &viper_pcmcia_info,
104 * The CPLD version register was not present on VIPER boards prior to
105 * v2i1. On v1 boards where the version register is not present we
106 * will just read back the previous value from the databus.
108 * Therefore we do two reads. The first time we write 0 to the
109 * (read-only) register before reading and the second time we write
110 * 0xff first. If the two reads do not match or they read back as 0xff
111 * or 0x00 then we have version 1 hardware.
113 static u8 viper_hw_version(void)
118 local_irq_save(flags);
122 VIPER_VERSION = 0xff;
125 v1 = (v1 != v2 || v1 == 0xff) ? 0 : v1;
127 local_irq_restore(flags);
132 static int viper_cpu_suspend(struct sys_device *sysdev, pm_message_t state)
134 viper_icr_set_bit(VIPER_ICR_R_DIS);
138 static int viper_cpu_resume(struct sys_device *sysdev)
140 viper_icr_clear_bit(VIPER_ICR_R_DIS);
144 static struct sysdev_driver viper_cpu_sysdev_driver = {
145 .suspend = viper_cpu_suspend,
146 .resume = viper_cpu_resume,
149 static unsigned int current_voltage_divisor;
152 * If force is not true then step from existing to new divisor. If
153 * force is true then jump straight to the new divisor. Stepping is
154 * used because if the jump in voltage is too large, the VCC can dip
155 * too low and the regulator cuts out.
157 * force can be used to initialize the divisor to a know state by
158 * setting the value for the current clock speed, since we are already
159 * running at that speed we know the voltage should be pretty close so
160 * the jump won't be too large
162 static void viper_set_core_cpu_voltage(unsigned long khz, int force)
165 unsigned int divisor = 0;
169 v = "1.0"; divisor = 0xfff;
170 } else if (khz < 300000) {
171 v = "1.1"; divisor = 0xde5;
173 v = "1.3"; divisor = 0x325;
176 pr_debug("viper: setting CPU core voltage to %sV at %d.%03dMHz\n",
177 v, (int)khz / 1000, (int)khz % 1000);
185 else if (current_voltage_divisor < divisor - STEP)
186 step = current_voltage_divisor + STEP;
187 else if (current_voltage_divisor > divisor + STEP)
188 step = current_voltage_divisor - STEP;
193 gpio_set_value(VIPER_PSU_CLK_GPIO, 0);
194 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0);
196 for (i = 1 << 11 ; i > 0 ; i >>= 1) {
199 gpio_set_value(VIPER_PSU_DATA_GPIO, step & i);
202 gpio_set_value(VIPER_PSU_CLK_GPIO, 1);
205 gpio_set_value(VIPER_PSU_CLK_GPIO, 0);
209 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 1);
212 gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0);
214 current_voltage_divisor = step;
215 } while (current_voltage_divisor != divisor);
218 /* Interrupt handling */
219 static unsigned long viper_irq_enabled_mask;
220 static const int viper_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, 9, 14, 15 };
221 static const int viper_isa_irq_map[] = {
222 0, /* ISA irq #0, invalid */
223 0, /* ISA irq #1, invalid */
224 0, /* ISA irq #2, invalid */
225 1 << 0, /* ISA irq #3 */
226 1 << 1, /* ISA irq #4 */
227 1 << 2, /* ISA irq #5 */
228 1 << 3, /* ISA irq #6 */
229 1 << 4, /* ISA irq #7 */
230 0, /* ISA irq #8, invalid */
231 1 << 8, /* ISA irq #9 */
232 1 << 5, /* ISA irq #10 */
233 1 << 6, /* ISA irq #11 */
234 1 << 7, /* ISA irq #12 */
235 0, /* ISA irq #13, invalid */
236 1 << 9, /* ISA irq #14 */
237 1 << 10, /* ISA irq #15 */
240 static inline int viper_irq_to_bitmask(unsigned int irq)
242 return viper_isa_irq_map[irq - PXA_ISA_IRQ(0)];
245 static inline int viper_bit_to_irq(int bit)
247 return viper_isa_irqs[bit] + PXA_ISA_IRQ(0);
250 static void viper_ack_irq(unsigned int irq)
252 int viper_irq = viper_irq_to_bitmask(irq);
254 if (viper_irq & 0xff)
255 VIPER_LO_IRQ_STATUS = viper_irq;
257 VIPER_HI_IRQ_STATUS = (viper_irq >> 8);
260 static void viper_mask_irq(unsigned int irq)
262 viper_irq_enabled_mask &= ~(viper_irq_to_bitmask(irq));
265 static void viper_unmask_irq(unsigned int irq)
267 viper_irq_enabled_mask |= viper_irq_to_bitmask(irq);
270 static inline unsigned long viper_irq_pending(void)
272 return (VIPER_HI_IRQ_STATUS << 8 | VIPER_LO_IRQ_STATUS) &
273 viper_irq_enabled_mask;
276 static void viper_irq_handler(unsigned int irq, struct irq_desc *desc)
278 unsigned long pending;
280 pending = viper_irq_pending();
282 /* we're in a chained irq handler,
283 * so ack the interrupt by hand */
284 GEDR(VIPER_CPLD_GPIO) = GPIO_bit(VIPER_CPLD_GPIO);
286 if (likely(pending)) {
287 irq = viper_bit_to_irq(__ffs(pending));
288 generic_handle_irq(irq);
290 pending = viper_irq_pending();
294 static struct irq_chip viper_irq_chip = {
296 .ack = viper_ack_irq,
297 .mask = viper_mask_irq,
298 .unmask = viper_unmask_irq
301 static void __init viper_init_irq(void)
309 for (level = 0; level < ARRAY_SIZE(viper_isa_irqs); level++) {
310 isa_irq = viper_bit_to_irq(level);
311 set_irq_chip(isa_irq, &viper_irq_chip);
312 set_irq_handler(isa_irq, handle_edge_irq);
313 set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
316 set_irq_chained_handler(gpio_to_irq(VIPER_CPLD_GPIO),
318 set_irq_type(gpio_to_irq(VIPER_CPLD_GPIO), IRQ_TYPE_EDGE_BOTH);
322 static struct pxafb_mode_info fb_mode_info[] = {
343 static struct pxafb_mach_info fb_info = {
344 .modes = fb_mode_info,
346 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
349 static int viper_backlight_init(struct device *dev)
353 /* GPIO9 and 10 control FB backlight. Initialise to off */
354 ret = gpio_request(VIPER_BCKLIGHT_EN_GPIO, "Backlight");
356 goto err_request_bckl;
358 ret = gpio_request(VIPER_LCD_EN_GPIO, "LCD");
360 goto err_request_lcd;
362 ret = gpio_direction_output(VIPER_BCKLIGHT_EN_GPIO, 0);
366 ret = gpio_direction_output(VIPER_LCD_EN_GPIO, 0);
373 gpio_free(VIPER_LCD_EN_GPIO);
375 gpio_free(VIPER_BCKLIGHT_EN_GPIO);
377 dev_err(dev, "Failed to setup LCD GPIOs\n");
382 static int viper_backlight_notify(struct device *dev, int brightness)
384 gpio_set_value(VIPER_LCD_EN_GPIO, !!brightness);
385 gpio_set_value(VIPER_BCKLIGHT_EN_GPIO, !!brightness);
390 static void viper_backlight_exit(struct device *dev)
392 gpio_free(VIPER_LCD_EN_GPIO);
393 gpio_free(VIPER_BCKLIGHT_EN_GPIO);
396 static struct platform_pwm_backlight_data viper_backlight_data = {
398 .max_brightness = 100,
399 .dft_brightness = 100,
400 .pwm_period_ns = 1000000,
401 .init = viper_backlight_init,
402 .notify = viper_backlight_notify,
403 .exit = viper_backlight_exit,
406 static struct platform_device viper_backlight_device = {
407 .name = "pwm-backlight",
409 .parent = &pxa25x_device_pwm0.dev,
410 .platform_data = &viper_backlight_data,
415 static struct resource smc91x_resources[] = {
417 .name = "smc91x-regs",
418 .start = VIPER_ETH_PHYS + 0x300,
419 .end = VIPER_ETH_PHYS + 0x30f,
420 .flags = IORESOURCE_MEM,
423 .start = gpio_to_irq(VIPER_ETH_GPIO),
424 .end = gpio_to_irq(VIPER_ETH_GPIO),
425 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
428 .name = "smc91x-data32",
429 .start = VIPER_ETH_DATA_PHYS,
430 .end = VIPER_ETH_DATA_PHYS + 3,
431 .flags = IORESOURCE_MEM,
435 static struct smc91x_platdata viper_smc91x_info = {
436 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
437 .leda = RPC_LED_100_10,
438 .ledb = RPC_LED_TX_RX,
441 static struct platform_device smc91x_device = {
444 .num_resources = ARRAY_SIZE(smc91x_resources),
445 .resource = smc91x_resources,
447 .platform_data = &viper_smc91x_info,
452 static struct i2c_gpio_platform_data i2c_bus_data = {
453 .sda_pin = VIPER_RTC_I2C_SDA_GPIO,
454 .scl_pin = VIPER_RTC_I2C_SCL_GPIO,
459 static struct platform_device i2c_bus_device = {
461 .id = 1, /* pxa2xx-i2c is bus 0, so start at 1 */
463 .platform_data = &i2c_bus_data,
467 static struct i2c_board_info __initdata viper_i2c_devices[] = {
469 I2C_BOARD_INFO("ds1338", 0x68),
474 * Serial configuration:
475 * You can either have the standard PXA ports driven by the PXA driver,
476 * or all the ports (PXA + 16850) driven by the 8250 driver.
477 * Choose your poison.
480 static struct resource viper_serial_resources[] = {
481 #ifndef CONFIG_SERIAL_PXA
485 .flags = IORESOURCE_MEM,
490 .flags = IORESOURCE_MEM,
495 .flags = IORESOURCE_MEM,
498 .start = VIPER_UARTA_PHYS,
499 .end = VIPER_UARTA_PHYS + 0xf,
500 .flags = IORESOURCE_MEM,
503 .start = VIPER_UARTB_PHYS,
504 .end = VIPER_UARTB_PHYS + 0xf,
505 .flags = IORESOURCE_MEM,
514 static struct plat_serial8250_port serial_platform_data[] = {
515 #ifndef CONFIG_SERIAL_PXA
518 .membase = (void *)&FFUART,
519 .mapbase = __PREG(FFUART),
521 .uartclk = 921600 * 16,
523 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
527 .membase = (void *)&BTUART,
528 .mapbase = __PREG(BTUART),
530 .uartclk = 921600 * 16,
532 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
536 .membase = (void *)&STUART,
537 .mapbase = __PREG(STUART),
539 .uartclk = 921600 * 16,
541 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
546 .mapbase = VIPER_UARTA_PHYS,
547 .irq = gpio_to_irq(VIPER_UARTA_GPIO),
548 .irqflags = IRQF_TRIGGER_RISING,
552 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP |
556 .mapbase = VIPER_UARTB_PHYS,
557 .irq = gpio_to_irq(VIPER_UARTB_GPIO),
558 .irqflags = IRQF_TRIGGER_RISING,
562 .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP |
569 static struct platform_device serial_device = {
570 .name = "serial8250",
573 .platform_data = serial_platform_data,
575 .num_resources = ARRAY_SIZE(viper_serial_resources),
576 .resource = viper_serial_resources,
580 static void isp116x_delay(struct device *dev, int delay)
585 static struct resource isp116x_resources[] = {
587 .start = VIPER_USB_PHYS + 0,
588 .end = VIPER_USB_PHYS + 1,
589 .flags = IORESOURCE_MEM,
592 .start = VIPER_USB_PHYS + 2,
593 .end = VIPER_USB_PHYS + 3,
594 .flags = IORESOURCE_MEM,
597 .start = gpio_to_irq(VIPER_USB_GPIO),
598 .end = gpio_to_irq(VIPER_USB_GPIO),
599 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
603 /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */
604 static struct isp116x_platform_data isp116x_platform_data = {
605 /* Enable internal resistors on downstream ports */
607 /* On-chip overcurrent protection */
609 /* INT output polarity */
611 /* INT edge or level triggered */
612 .int_edge_triggered = 0,
614 /* WAKEUP pin connected - NOT SUPPORTED */
615 /* .remote_wakeup_connected = 0, */
616 /* Wakeup by devices on usb bus enabled */
617 .remote_wakeup_enable = 0,
618 .delay = isp116x_delay,
621 static struct platform_device isp116x_device = {
622 .name = "isp116x-hcd",
624 .num_resources = ARRAY_SIZE(isp116x_resources),
625 .resource = isp116x_resources,
627 .platform_data = &isp116x_platform_data,
633 static struct resource mtd_resources[] = {
634 [0] = { /* RedBoot config + filesystem flash */
635 .start = VIPER_FLASH_PHYS,
636 .end = VIPER_FLASH_PHYS + SZ_32M - 1,
637 .flags = IORESOURCE_MEM,
639 [1] = { /* Boot flash */
640 .start = VIPER_BOOT_PHYS,
641 .end = VIPER_BOOT_PHYS + SZ_1M - 1,
642 .flags = IORESOURCE_MEM,
645 * SRAM size is actually 256KB, 8bits, with a sparse mapping
646 * (each byte is on a 16bit boundary).
648 .start = _VIPER_SRAM_BASE,
649 .end = _VIPER_SRAM_BASE + SZ_512K - 1,
650 .flags = IORESOURCE_MEM,
654 static struct mtd_partition viper_boot_flash_partition = {
658 .mask_flags = MTD_WRITEABLE, /* force R/O */
661 static struct physmap_flash_data viper_flash_data[] = {
669 .parts = &viper_boot_flash_partition,
674 static struct platform_device viper_mtd_devices[] = {
676 .name = "physmap-flash",
679 .platform_data = &viper_flash_data[0],
681 .resource = &mtd_resources[0],
685 .name = "physmap-flash",
688 .platform_data = &viper_flash_data[1],
690 .resource = &mtd_resources[1],
695 static struct platform_device *viper_devs[] __initdata = {
700 &viper_mtd_devices[0],
701 &viper_mtd_devices[1],
702 &viper_backlight_device,
703 &viper_pcmcia_device,
706 static mfp_cfg_t viper_pin_config[] __initdata = {
715 GPIO9_GPIO, /* VIPER_BCKLIGHT_EN_GPIO */
716 GPIO10_GPIO, /* VIPER_LCD_EN_GPIO */
719 /* Ethernet PHY Ready */
722 /* Serial shutdown */
723 GPIO12_GPIO | MFP_LPM_DRIVE_HIGH, /* VIPER_UART_SHDN_GPIO */
725 /* Compact-Flash / PC104 */
736 GPIO8_GPIO, /* VIPER_CF_RDY_GPIO */
737 GPIO32_GPIO, /* VIPER_CF_CD_GPIO */
738 GPIO82_GPIO, /* VIPER_CF_POWER_GPIO */
740 /* Integrated UPS control */
741 GPIO20_GPIO, /* VIPER_UPS_GPIO */
743 /* Vcc regulator control */
744 GPIO6_GPIO, /* VIPER_PSU_DATA_GPIO */
745 GPIO11_GPIO, /* VIPER_PSU_CLK_GPIO */
746 GPIO19_GPIO, /* VIPER_PSU_nCS_LD_GPIO */
749 GPIO26_GPIO, /* VIPER_TPM_I2C_SDA_GPIO */
750 GPIO27_GPIO, /* VIPER_TPM_I2C_SCL_GPIO */
751 GPIO83_GPIO, /* VIPER_RTC_I2C_SDA_GPIO */
752 GPIO84_GPIO, /* VIPER_RTC_I2C_SCL_GPIO */
754 /* PC/104 Interrupt */
755 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, /* VIPER_CPLD_GPIO */
758 static unsigned long viper_tpm;
760 static int __init viper_tpm_setup(char *str)
762 strict_strtoul(str, 10, &viper_tpm);
766 __setup("tpm=", viper_tpm_setup);
768 static void __init viper_tpm_init(void)
770 struct platform_device *tpm_device;
771 struct i2c_gpio_platform_data i2c_tpm_data = {
772 .sda_pin = VIPER_TPM_I2C_SDA_GPIO,
773 .scl_pin = VIPER_TPM_I2C_SCL_GPIO,
779 /* Allocate TPM i2c bus if requested */
783 tpm_device = platform_device_alloc("i2c-gpio", 2);
785 if (!platform_device_add_data(tpm_device,
787 sizeof(i2c_tpm_data))) {
788 if (platform_device_add(tpm_device)) {
789 errstr = "register TPM i2c bus";
793 errstr = "allocate TPM i2c bus data";
797 errstr = "allocate TPM i2c device";
806 pr_err("viper: Couldn't %s, giving up\n", errstr);
809 static void __init viper_init_vcore_gpios(void)
811 if (gpio_request(VIPER_PSU_DATA_GPIO, "PSU data"))
812 goto err_request_data;
814 if (gpio_request(VIPER_PSU_CLK_GPIO, "PSU clock"))
815 goto err_request_clk;
817 if (gpio_request(VIPER_PSU_nCS_LD_GPIO, "PSU cs"))
820 if (gpio_direction_output(VIPER_PSU_DATA_GPIO, 0) ||
821 gpio_direction_output(VIPER_PSU_CLK_GPIO, 0) ||
822 gpio_direction_output(VIPER_PSU_nCS_LD_GPIO, 0))
825 /* c/should assume redboot set the correct level ??? */
826 viper_set_core_cpu_voltage(get_clk_frequency_khz(0), 1);
831 gpio_free(VIPER_PSU_nCS_LD_GPIO);
833 gpio_free(VIPER_PSU_CLK_GPIO);
835 gpio_free(VIPER_PSU_DATA_GPIO);
837 pr_err("viper: Failed to setup vcore control GPIOs\n");
840 static void __init viper_init_serial_gpio(void)
842 if (gpio_request(VIPER_UART_SHDN_GPIO, "UARTs shutdown"))
845 if (gpio_direction_output(VIPER_UART_SHDN_GPIO, 0))
851 gpio_free(VIPER_UART_SHDN_GPIO);
853 pr_err("viper: Failed to setup UART shutdown GPIO\n");
856 #ifdef CONFIG_CPU_FREQ
857 static int viper_cpufreq_notifier(struct notifier_block *nb,
858 unsigned long val, void *data)
860 struct cpufreq_freqs *freq = data;
862 /* TODO: Adjust timings??? */
865 case CPUFREQ_PRECHANGE:
866 if (freq->old < freq->new) {
867 /* we are getting faster so raise the voltage
868 * before we change freq */
869 viper_set_core_cpu_voltage(freq->new, 0);
872 case CPUFREQ_POSTCHANGE:
873 if (freq->old > freq->new) {
874 /* we are slowing down so drop the power
875 * after we change freq */
876 viper_set_core_cpu_voltage(freq->new, 0);
879 case CPUFREQ_RESUMECHANGE:
880 viper_set_core_cpu_voltage(freq->new, 0);
890 static struct notifier_block viper_cpufreq_notifier_block = {
891 .notifier_call = viper_cpufreq_notifier
894 static void __init viper_init_cpufreq(void)
896 if (cpufreq_register_notifier(&viper_cpufreq_notifier_block,
897 CPUFREQ_TRANSITION_NOTIFIER))
898 pr_err("viper: Failed to setup cpufreq notifier\n");
901 static inline void viper_init_cpufreq(void) {}
904 static void viper_power_off(void)
906 pr_notice("Shutting off UPS\n");
907 gpio_set_value(VIPER_UPS_GPIO, 1);
908 /* Spin to death... */
912 static void __init viper_init(void)
916 pm_power_off = viper_power_off;
918 pxa2xx_mfp_config(ARRAY_AND_SIZE(viper_pin_config));
920 pxa_set_ffuart_info(NULL);
921 pxa_set_btuart_info(NULL);
922 pxa_set_stuart_info(NULL);
924 /* Wake-up serial console */
925 viper_init_serial_gpio();
927 set_pxa_fb_info(&fb_info);
929 /* v1 hardware cannot use the datacs line */
930 version = viper_hw_version();
932 smc91x_device.num_resources--;
934 pxa_set_i2c_info(NULL);
935 platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs));
937 viper_init_vcore_gpios();
938 viper_init_cpufreq();
940 sysdev_driver_register(&cpu_sysdev_class, &viper_cpu_sysdev_driver);
943 pr_info("viper: hardware v%di%d detected. "
944 "CPLD revision %d.\n",
945 VIPER_BOARD_VERSION(version),
946 VIPER_BOARD_ISSUE(version),
947 VIPER_CPLD_REVISION(version));
948 system_rev = (VIPER_BOARD_VERSION(version) << 8) |
949 (VIPER_BOARD_ISSUE(version) << 4) |
950 VIPER_CPLD_REVISION(version);
952 pr_info("viper: No version register.\n");
955 i2c_register_board_info(1, ARRAY_AND_SIZE(viper_i2c_devices));
958 pxa_set_ac97_info(NULL);
961 static struct map_desc viper_io_desc[] __initdata = {
963 .virtual = VIPER_CPLD_BASE,
964 .pfn = __phys_to_pfn(VIPER_CPLD_PHYS),
965 .length = 0x00300000,
969 .virtual = VIPER_PC104IO_BASE,
970 .pfn = __phys_to_pfn(0x30000000),
971 .length = 0x00800000,
976 static void __init viper_map_io(void)
980 iotable_init(viper_io_desc, ARRAY_SIZE(viper_io_desc));
985 MACHINE_START(VIPER, "Arcom/Eurotech VIPER SBC")
986 /* Maintainer: Marc Zyngier <maz@misterjones.org> */
987 .phys_io = 0x40000000,
988 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
989 .boot_params = 0xa0000100,
990 .map_io = viper_map_io,
991 .init_irq = viper_init_irq,
993 .init_machine = viper_init,