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/serial_core.h>
25 #include <linux/serial_8250.h>
26 #include <linux/mtd/physmap.h>
27 #include <linux/platform_device.h>
29 #include <mach/hardware.h>
30 #include <asm/cputype.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/pci.h>
35 #include <asm/mach/time.h>
36 #include <asm/mach-types.h>
38 #include <asm/pgtable.h>
39 #include <mach/time.h>
42 * Until March of 2007 iq31244 platforms and ep80219 platforms shared the
43 * same machine id, and the processor type was used to select board type.
44 * However this assumption breaks for an iq80219 board which is an iop219
45 * processor on an iq31244 board. The force_ep80219 flag has been added
46 * for old boot loaders using the iq31244 machine id for an ep80219 platform.
48 static int force_ep80219;
50 static int is_80219(void)
52 return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
55 static int is_ep80219(void)
57 if (machine_is_ep80219() || force_ep80219)
65 * EP80219/IQ31244 timer tick configuration.
67 static void __init iq31244_timer_init(void)
70 /* 33.333 MHz crystal. */
71 iop_init_time(200000000);
73 /* 33.000 MHz crystal. */
74 iop_init_time(198000000);
82 static struct map_desc iq31244_io_desc[] __initdata = {
83 { /* on-board devices */
84 .virtual = IQ31244_UART,
85 .pfn = __phys_to_pfn(IQ31244_UART),
91 void __init iq31244_map_io(void)
94 iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
99 * EP80219/IQ31244 PCI.
102 ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
108 irq = IRQ_IOP32X_XINT1;
109 } else if (slot == 1) {
111 irq = IRQ_IOP32X_XINT0;
112 } else if (slot == 2) {
114 irq = IRQ_IOP32X_XINT3;
115 } else if (slot == 3) {
117 irq = IRQ_IOP32X_XINT2;
119 printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
120 "device PCI:%d:%d:%d\n", dev->bus->number,
121 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
128 static struct hw_pci ep80219_pci __initdata = {
131 .setup = iop3xx_pci_setup,
132 .preinit = iop3xx_pci_preinit,
133 .map_irq = ep80219_pci_map_irq,
137 iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
143 irq = IRQ_IOP32X_XINT1;
144 } else if (slot == 1) {
146 irq = IRQ_IOP32X_XINT2;
147 } else if (slot == 2) {
149 irq = IRQ_IOP32X_XINT3;
150 } else if (slot == 3) {
152 irq = IRQ_IOP32X_XINT0;
154 printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
155 "device PCI:%d:%d:%d\n", dev->bus->number,
156 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
163 static struct hw_pci iq31244_pci __initdata = {
166 .setup = iop3xx_pci_setup,
167 .preinit = iop3xx_pci_preinit,
168 .map_irq = iq31244_pci_map_irq,
171 static int __init iq31244_pci_init(void)
174 pci_common_init(&ep80219_pci);
175 else if (machine_is_iq31244()) {
177 printk("note: iq31244 board type has been selected\n");
178 printk("note: to select ep80219 operation:\n");
179 printk("\t1/ specify \"force_ep80219\" on the kernel"
181 printk("\t2/ update boot loader to pass"
182 " the ep80219 id: %d\n", MACH_TYPE_EP80219);
184 pci_common_init(&iq31244_pci);
190 subsys_initcall(iq31244_pci_init);
194 * IQ31244 machine initialisation.
196 static struct physmap_flash_data iq31244_flash_data = {
200 static struct resource iq31244_flash_resource = {
203 .flags = IORESOURCE_MEM,
206 static struct platform_device iq31244_flash_device = {
207 .name = "physmap-flash",
210 .platform_data = &iq31244_flash_data,
213 .resource = &iq31244_flash_resource,
216 static struct plat_serial8250_port iq31244_serial_port[] = {
218 .mapbase = IQ31244_UART,
219 .membase = (char *)IQ31244_UART,
220 .irq = IRQ_IOP32X_XINT1,
221 .flags = UPF_SKIP_TEST,
229 static struct resource iq31244_uart_resource = {
230 .start = IQ31244_UART,
231 .end = IQ31244_UART + 7,
232 .flags = IORESOURCE_MEM,
235 static struct platform_device iq31244_serial_device = {
236 .name = "serial8250",
237 .id = PLAT8250_DEV_PLATFORM,
239 .platform_data = iq31244_serial_port,
242 .resource = &iq31244_uart_resource,
246 * This function will send a SHUTDOWN_COMPLETE message to the PIC
247 * controller over I2C. We are not using the i2c subsystem since
248 * we are going to power off and it may be removed
250 void ep80219_power_off(void)
253 * Send the Address byte w/ the start condition
255 *IOP3XX_IDBR1 = 0x60;
260 * Send the START_MSG byte w/ no start or stop condition
262 *IOP3XX_IDBR1 = 0x0F;
267 * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
270 *IOP3XX_IDBR1 = 0x03;
275 * Send an ignored byte w/ stop condition
277 *IOP3XX_IDBR1 = 0x00;
284 static void __init iq31244_init_machine(void)
286 platform_device_register(&iop3xx_i2c0_device);
287 platform_device_register(&iop3xx_i2c1_device);
288 platform_device_register(&iq31244_flash_device);
289 platform_device_register(&iq31244_serial_device);
290 platform_device_register(&iop3xx_dma_0_channel);
291 platform_device_register(&iop3xx_dma_1_channel);
294 pm_power_off = ep80219_power_off;
297 platform_device_register(&iop3xx_aau_channel);
300 static int __init force_ep80219_setup(char *str)
306 __setup("force_ep80219", force_ep80219_setup);
308 MACHINE_START(IQ31244, "Intel IQ31244")
309 /* Maintainer: Intel Corp. */
310 .atag_offset = 0x100,
311 .map_io = iq31244_map_io,
312 .init_irq = iop32x_init_irq,
313 .init_time = iq31244_timer_init,
314 .init_machine = iq31244_init_machine,
315 .restart = iop3xx_restart,
318 /* There should have been an ep80219 machine identifier from the beginning.
319 * Boot roms older than March 2007 do not know the ep80219 machine id. Pass
320 * "force_ep80219" on the kernel command line, otherwise iq31244 operation
323 MACHINE_START(EP80219, "Intel EP80219")
324 /* Maintainer: Intel Corp. */
325 .atag_offset = 0x100,
326 .map_io = iq31244_map_io,
327 .init_irq = iop32x_init_irq,
328 .init_time = iq31244_timer_init,
329 .init_machine = iq31244_init_machine,
330 .restart = iop3xx_restart,