2 * arch/arm/mach-iop32x/iq31244.c
4 * Board support code for the Intel EP80219 and IQ31244 platforms.
6 * Author: Rory Bolt <rorybolt@pacbell.net>
7 * Copyright (C) 2002 Rory Bolt
8 * Copyright 2003 (c) MontaVista, Software, Inc.
9 * Copyright (C) 2004 Intel Corp.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
18 #include <linux/init.h>
19 #include <linux/delay.h>
20 #include <linux/kernel.h>
21 #include <linux/pci.h>
23 #include <linux/string.h>
24 #include <linux/slab.h>
25 #include <linux/serial_core.h>
26 #include <linux/serial_8250.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/platform_device.h>
30 #include <mach/hardware.h>
31 #include <asm/cputype.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
35 #include <asm/mach/pci.h>
36 #include <asm/mach/time.h>
37 #include <asm/mach-types.h>
39 #include <asm/pgtable.h>
40 #include <mach/time.h>
43 * Until March of 2007 iq31244 platforms and ep80219 platforms shared the
44 * same machine id, and the processor type was used to select board type.
45 * However this assumption breaks for an iq80219 board which is an iop219
46 * processor on an iq31244 board. The force_ep80219 flag has been added
47 * for old boot loaders using the iq31244 machine id for an ep80219 platform.
49 static int force_ep80219;
51 static int is_80219(void)
53 return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
56 static int is_ep80219(void)
58 if (machine_is_ep80219() || force_ep80219)
66 * EP80219/IQ31244 timer tick configuration.
68 static void __init iq31244_timer_init(void)
71 /* 33.333 MHz crystal. */
72 iop_init_time(200000000);
74 /* 33.000 MHz crystal. */
75 iop_init_time(198000000);
79 static struct sys_timer iq31244_timer = {
80 .init = iq31244_timer_init,
81 .offset = iop_gettimeoffset,
88 static struct map_desc iq31244_io_desc[] __initdata = {
89 { /* on-board devices */
90 .virtual = IQ31244_UART,
91 .pfn = __phys_to_pfn(IQ31244_UART),
97 void __init iq31244_map_io(void)
100 iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
105 * EP80219/IQ31244 PCI.
108 ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
114 irq = IRQ_IOP32X_XINT1;
115 } else if (slot == 1) {
117 irq = IRQ_IOP32X_XINT0;
118 } else if (slot == 2) {
120 irq = IRQ_IOP32X_XINT3;
121 } else if (slot == 3) {
123 irq = IRQ_IOP32X_XINT2;
125 printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
126 "device PCI:%d:%d:%d\n", dev->bus->number,
127 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
134 static struct hw_pci ep80219_pci __initdata = {
135 .swizzle = pci_std_swizzle,
137 .setup = iop3xx_pci_setup,
138 .preinit = iop3xx_pci_preinit,
139 .scan = iop3xx_pci_scan_bus,
140 .map_irq = ep80219_pci_map_irq,
144 iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
150 irq = IRQ_IOP32X_XINT1;
151 } else if (slot == 1) {
153 irq = IRQ_IOP32X_XINT2;
154 } else if (slot == 2) {
156 irq = IRQ_IOP32X_XINT3;
157 } else if (slot == 3) {
159 irq = IRQ_IOP32X_XINT0;
161 printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
162 "device PCI:%d:%d:%d\n", dev->bus->number,
163 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
170 static struct hw_pci iq31244_pci __initdata = {
171 .swizzle = pci_std_swizzle,
173 .setup = iop3xx_pci_setup,
174 .preinit = iop3xx_pci_preinit,
175 .scan = iop3xx_pci_scan_bus,
176 .map_irq = iq31244_pci_map_irq,
179 static int __init iq31244_pci_init(void)
182 pci_common_init(&ep80219_pci);
183 else if (machine_is_iq31244()) {
185 printk("note: iq31244 board type has been selected\n");
186 printk("note: to select ep80219 operation:\n");
187 printk("\t1/ specify \"force_ep80219\" on the kernel"
189 printk("\t2/ update boot loader to pass"
190 " the ep80219 id: %d\n", MACH_TYPE_EP80219);
192 pci_common_init(&iq31244_pci);
198 subsys_initcall(iq31244_pci_init);
202 * IQ31244 machine initialisation.
204 static struct physmap_flash_data iq31244_flash_data = {
208 static struct resource iq31244_flash_resource = {
211 .flags = IORESOURCE_MEM,
214 static struct platform_device iq31244_flash_device = {
215 .name = "physmap-flash",
218 .platform_data = &iq31244_flash_data,
221 .resource = &iq31244_flash_resource,
224 static struct plat_serial8250_port iq31244_serial_port[] = {
226 .mapbase = IQ31244_UART,
227 .membase = (char *)IQ31244_UART,
228 .irq = IRQ_IOP32X_XINT1,
229 .flags = UPF_SKIP_TEST,
237 static struct resource iq31244_uart_resource = {
238 .start = IQ31244_UART,
239 .end = IQ31244_UART + 7,
240 .flags = IORESOURCE_MEM,
243 static struct platform_device iq31244_serial_device = {
244 .name = "serial8250",
245 .id = PLAT8250_DEV_PLATFORM,
247 .platform_data = iq31244_serial_port,
250 .resource = &iq31244_uart_resource,
254 * This function will send a SHUTDOWN_COMPLETE message to the PIC
255 * controller over I2C. We are not using the i2c subsystem since
256 * we are going to power off and it may be removed
258 void ep80219_power_off(void)
261 * Send the Address byte w/ the start condition
263 *IOP3XX_IDBR1 = 0x60;
268 * Send the START_MSG byte w/ no start or stop condition
270 *IOP3XX_IDBR1 = 0x0F;
275 * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
278 *IOP3XX_IDBR1 = 0x03;
283 * Send an ignored byte w/ stop condition
285 *IOP3XX_IDBR1 = 0x00;
292 static void __init iq31244_init_machine(void)
294 platform_device_register(&iop3xx_i2c0_device);
295 platform_device_register(&iop3xx_i2c1_device);
296 platform_device_register(&iq31244_flash_device);
297 platform_device_register(&iq31244_serial_device);
298 platform_device_register(&iop3xx_dma_0_channel);
299 platform_device_register(&iop3xx_dma_1_channel);
302 pm_power_off = ep80219_power_off;
305 platform_device_register(&iop3xx_aau_channel);
308 static int __init force_ep80219_setup(char *str)
314 __setup("force_ep80219", force_ep80219_setup);
316 MACHINE_START(IQ31244, "Intel IQ31244")
317 /* Maintainer: Intel Corp. */
318 .phys_io = IQ31244_UART,
319 .io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
320 .boot_params = 0xa0000100,
321 .map_io = iq31244_map_io,
322 .init_irq = iop32x_init_irq,
323 .timer = &iq31244_timer,
324 .init_machine = iq31244_init_machine,
327 /* There should have been an ep80219 machine identifier from the beginning.
328 * Boot roms older than March 2007 do not know the ep80219 machine id. Pass
329 * "force_ep80219" on the kernel command line, otherwise iq31244 operation
332 MACHINE_START(EP80219, "Intel EP80219")
333 /* Maintainer: Intel Corp. */
334 .phys_io = IQ31244_UART,
335 .io_pg_offst = ((IQ31244_UART) >> 18) & 0xfffc,
336 .boot_params = 0xa0000100,
337 .map_io = iq31244_map_io,
338 .init_irq = iop32x_init_irq,
339 .timer = &iq31244_timer,
340 .init_machine = iq31244_init_machine,