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);
78 static struct sys_timer iq31244_timer
= {
79 .init
= iq31244_timer_init
,
86 static struct map_desc iq31244_io_desc
[] __initdata
= {
87 { /* on-board devices */
88 .virtual = IQ31244_UART
,
89 .pfn
= __phys_to_pfn(IQ31244_UART
),
95 void __init
iq31244_map_io(void)
98 iotable_init(iq31244_io_desc
, ARRAY_SIZE(iq31244_io_desc
));
103 * EP80219/IQ31244 PCI.
106 ep80219_pci_map_irq(const struct pci_dev
*dev
, u8 slot
, u8 pin
)
112 irq
= IRQ_IOP32X_XINT1
;
113 } else if (slot
== 1) {
115 irq
= IRQ_IOP32X_XINT0
;
116 } else if (slot
== 2) {
118 irq
= IRQ_IOP32X_XINT3
;
119 } else if (slot
== 3) {
121 irq
= IRQ_IOP32X_XINT2
;
123 printk(KERN_ERR
"ep80219_pci_map_irq() called for unknown "
124 "device PCI:%d:%d:%d\n", dev
->bus
->number
,
125 PCI_SLOT(dev
->devfn
), PCI_FUNC(dev
->devfn
));
132 static struct hw_pci ep80219_pci __initdata
= {
133 .swizzle
= pci_std_swizzle
,
135 .setup
= iop3xx_pci_setup
,
136 .preinit
= iop3xx_pci_preinit
,
137 .scan
= iop3xx_pci_scan_bus
,
138 .map_irq
= ep80219_pci_map_irq
,
142 iq31244_pci_map_irq(const struct pci_dev
*dev
, u8 slot
, u8 pin
)
148 irq
= IRQ_IOP32X_XINT1
;
149 } else if (slot
== 1) {
151 irq
= IRQ_IOP32X_XINT2
;
152 } else if (slot
== 2) {
154 irq
= IRQ_IOP32X_XINT3
;
155 } else if (slot
== 3) {
157 irq
= IRQ_IOP32X_XINT0
;
159 printk(KERN_ERR
"iq31244_pci_map_irq called for unknown "
160 "device PCI:%d:%d:%d\n", dev
->bus
->number
,
161 PCI_SLOT(dev
->devfn
), PCI_FUNC(dev
->devfn
));
168 static struct hw_pci iq31244_pci __initdata
= {
169 .swizzle
= pci_std_swizzle
,
171 .setup
= iop3xx_pci_setup
,
172 .preinit
= iop3xx_pci_preinit
,
173 .scan
= iop3xx_pci_scan_bus
,
174 .map_irq
= iq31244_pci_map_irq
,
177 static int __init
iq31244_pci_init(void)
180 pci_common_init(&ep80219_pci
);
181 else if (machine_is_iq31244()) {
183 printk("note: iq31244 board type has been selected\n");
184 printk("note: to select ep80219 operation:\n");
185 printk("\t1/ specify \"force_ep80219\" on the kernel"
187 printk("\t2/ update boot loader to pass"
188 " the ep80219 id: %d\n", MACH_TYPE_EP80219
);
190 pci_common_init(&iq31244_pci
);
196 subsys_initcall(iq31244_pci_init
);
200 * IQ31244 machine initialisation.
202 static struct physmap_flash_data iq31244_flash_data
= {
206 static struct resource iq31244_flash_resource
= {
209 .flags
= IORESOURCE_MEM
,
212 static struct platform_device iq31244_flash_device
= {
213 .name
= "physmap-flash",
216 .platform_data
= &iq31244_flash_data
,
219 .resource
= &iq31244_flash_resource
,
222 static struct plat_serial8250_port iq31244_serial_port
[] = {
224 .mapbase
= IQ31244_UART
,
225 .membase
= (char *)IQ31244_UART
,
226 .irq
= IRQ_IOP32X_XINT1
,
227 .flags
= UPF_SKIP_TEST
,
235 static struct resource iq31244_uart_resource
= {
236 .start
= IQ31244_UART
,
237 .end
= IQ31244_UART
+ 7,
238 .flags
= IORESOURCE_MEM
,
241 static struct platform_device iq31244_serial_device
= {
242 .name
= "serial8250",
243 .id
= PLAT8250_DEV_PLATFORM
,
245 .platform_data
= iq31244_serial_port
,
248 .resource
= &iq31244_uart_resource
,
252 * This function will send a SHUTDOWN_COMPLETE message to the PIC
253 * controller over I2C. We are not using the i2c subsystem since
254 * we are going to power off and it may be removed
256 void ep80219_power_off(void)
259 * Send the Address byte w/ the start condition
261 *IOP3XX_IDBR1
= 0x60;
266 * Send the START_MSG byte w/ no start or stop condition
268 *IOP3XX_IDBR1
= 0x0F;
273 * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
276 *IOP3XX_IDBR1
= 0x03;
281 * Send an ignored byte w/ stop condition
283 *IOP3XX_IDBR1
= 0x00;
290 static void __init
iq31244_init_machine(void)
292 platform_device_register(&iop3xx_i2c0_device
);
293 platform_device_register(&iop3xx_i2c1_device
);
294 platform_device_register(&iq31244_flash_device
);
295 platform_device_register(&iq31244_serial_device
);
296 platform_device_register(&iop3xx_dma_0_channel
);
297 platform_device_register(&iop3xx_dma_1_channel
);
300 pm_power_off
= ep80219_power_off
;
303 platform_device_register(&iop3xx_aau_channel
);
306 static int __init
force_ep80219_setup(char *str
)
312 __setup("force_ep80219", force_ep80219_setup
);
314 MACHINE_START(IQ31244
, "Intel IQ31244")
315 /* Maintainer: Intel Corp. */
316 .atag_offset
= 0x100,
317 .map_io
= iq31244_map_io
,
318 .init_irq
= iop32x_init_irq
,
319 .timer
= &iq31244_timer
,
320 .init_machine
= iq31244_init_machine
,
323 /* There should have been an ep80219 machine identifier from the beginning.
324 * Boot roms older than March 2007 do not know the ep80219 machine id. Pass
325 * "force_ep80219" on the kernel command line, otherwise iq31244 operation
328 MACHINE_START(EP80219
, "Intel EP80219")
329 /* Maintainer: Intel Corp. */
330 .atag_offset
= 0x100,
331 .map_io
= iq31244_map_io
,
332 .init_irq
= iop32x_init_irq
,
333 .timer
= &iq31244_timer
,
334 .init_machine
= iq31244_init_machine
,