blob: 0e1392b20d18e764f6558ae523e7f0fa0a350257 [file] [log] [blame]
Lennert Buytenhekc680b772006-09-18 23:24:52 +01001/*
2 * arch/arm/mach-iop32x/iq31244.c
3 *
4 * Board support code for the Intel EP80219 and IQ31244 platforms.
5 *
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.
10 *
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.
15 */
16
17#include <linux/mm.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/kernel.h>
21#include <linux/pci.h>
22#include <linux/pm.h>
23#include <linux/string.h>
Lennert Buytenhekc680b772006-09-18 23:24:52 +010024#include <linux/serial_core.h>
25#include <linux/serial_8250.h>
26#include <linux/mtd/physmap.h>
27#include <linux/platform_device.h>
Russell Kingfced80c2008-09-06 12:10:45 +010028#include <linux/io.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010029#include <mach/hardware.h>
Russell King0ba8b9b2008-08-10 18:08:10 +010030#include <asm/cputype.h>
Lennert Buytenhekc680b772006-09-18 23:24:52 +010031#include <asm/irq.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>
37#include <asm/page.h>
38#include <asm/pgtable.h>
Russell Kinga09e64f2008-08-05 16:14:15 +010039#include <mach/time.h>
Linus Walleij7b85b862013-09-09 16:39:51 +020040#include "gpio-iop32x.h"
Lennert Buytenhekc680b772006-09-18 23:24:52 +010041
42/*
Dan Williams094f1272007-03-16 19:31:06 +010043 * 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.
Lennert Buytenhekc680b772006-09-18 23:24:52 +010048 */
Dan Williams094f1272007-03-16 19:31:06 +010049static int force_ep80219;
50
Lennert Buytenhekc680b772006-09-18 23:24:52 +010051static int is_80219(void)
52{
Russell King0ba8b9b2008-08-10 18:08:10 +010053 return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
Lennert Buytenhekc680b772006-09-18 23:24:52 +010054}
55
Dan Williams094f1272007-03-16 19:31:06 +010056static int is_ep80219(void)
57{
58 if (machine_is_ep80219() || force_ep80219)
59 return 1;
60 else
61 return 0;
62}
63
Lennert Buytenhekc680b772006-09-18 23:24:52 +010064
65/*
66 * EP80219/IQ31244 timer tick configuration.
67 */
68static void __init iq31244_timer_init(void)
69{
Dan Williams094f1272007-03-16 19:31:06 +010070 if (is_ep80219()) {
Lennert Buytenhekc680b772006-09-18 23:24:52 +010071 /* 33.333 MHz crystal. */
Dan Williams3668b452007-02-13 17:13:34 +010072 iop_init_time(200000000);
Lennert Buytenhekc680b772006-09-18 23:24:52 +010073 } else {
74 /* 33.000 MHz crystal. */
Dan Williams3668b452007-02-13 17:13:34 +010075 iop_init_time(198000000);
Lennert Buytenhekc680b772006-09-18 23:24:52 +010076 }
77}
78
Lennert Buytenhekc680b772006-09-18 23:24:52 +010079
80/*
81 * IQ31244 I/O.
82 */
83static struct map_desc iq31244_io_desc[] __initdata = {
84 { /* on-board devices */
85 .virtual = IQ31244_UART,
86 .pfn = __phys_to_pfn(IQ31244_UART),
87 .length = 0x00100000,
88 .type = MT_DEVICE,
89 },
90};
91
92void __init iq31244_map_io(void)
93{
94 iop3xx_map_io();
95 iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
96}
97
98
99/*
100 * EP80219/IQ31244 PCI.
101 */
Dan Williamsd73d8012007-05-15 01:03:36 +0100102static int __init
Ralf Baechled5341942011-06-10 15:30:21 +0100103ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100104{
105 int irq;
106
107 if (slot == 0) {
108 /* CFlash */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100109 irq = IRQ_IOP32X_XINT1;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100110 } else if (slot == 1) {
111 /* 82551 Pro 100 */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100112 irq = IRQ_IOP32X_XINT0;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100113 } else if (slot == 2) {
114 /* PCI-X Slot */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100115 irq = IRQ_IOP32X_XINT3;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100116 } else if (slot == 3) {
117 /* SATA */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100118 irq = IRQ_IOP32X_XINT2;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100119 } else {
120 printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
121 "device PCI:%d:%d:%d\n", dev->bus->number,
122 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
123 irq = -1;
124 }
125
126 return irq;
127}
128
129static struct hw_pci ep80219_pci __initdata = {
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100130 .nr_controllers = 1,
Russell Kingc23bfc32012-03-10 12:49:16 +0000131 .ops = &iop3xx_ops,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100132 .setup = iop3xx_pci_setup,
133 .preinit = iop3xx_pci_preinit,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100134 .map_irq = ep80219_pci_map_irq,
135};
136
Dan Williamsd73d8012007-05-15 01:03:36 +0100137static int __init
Ralf Baechled5341942011-06-10 15:30:21 +0100138iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100139{
140 int irq;
141
142 if (slot == 0) {
143 /* CFlash */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100144 irq = IRQ_IOP32X_XINT1;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100145 } else if (slot == 1) {
146 /* SATA */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100147 irq = IRQ_IOP32X_XINT2;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100148 } else if (slot == 2) {
149 /* PCI-X Slot */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100150 irq = IRQ_IOP32X_XINT3;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100151 } else if (slot == 3) {
152 /* 82546 GigE */
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100153 irq = IRQ_IOP32X_XINT0;
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100154 } else {
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100155 printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100156 "device PCI:%d:%d:%d\n", dev->bus->number,
157 PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
158 irq = -1;
159 }
160
161 return irq;
162}
163
164static struct hw_pci iq31244_pci __initdata = {
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100165 .nr_controllers = 1,
Russell Kingc23bfc32012-03-10 12:49:16 +0000166 .ops = &iop3xx_ops,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100167 .setup = iop3xx_pci_setup,
168 .preinit = iop3xx_pci_preinit,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100169 .map_irq = iq31244_pci_map_irq,
170};
171
172static int __init iq31244_pci_init(void)
173{
Dan Williamsc34002c2008-03-26 19:12:38 -0700174 if (is_ep80219())
175 pci_common_init(&ep80219_pci);
176 else if (machine_is_iq31244()) {
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100177 if (is_80219()) {
Dan Williams094f1272007-03-16 19:31:06 +0100178 printk("note: iq31244 board type has been selected\n");
179 printk("note: to select ep80219 operation:\n");
180 printk("\t1/ specify \"force_ep80219\" on the kernel"
181 " command line\n");
182 printk("\t2/ update boot loader to pass"
183 " the ep80219 id: %d\n", MACH_TYPE_EP80219);
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100184 }
Dan Williamsc34002c2008-03-26 19:12:38 -0700185 pci_common_init(&iq31244_pci);
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100186 }
187
188 return 0;
189}
190
191subsys_initcall(iq31244_pci_init);
192
193
194/*
195 * IQ31244 machine initialisation.
196 */
197static struct physmap_flash_data iq31244_flash_data = {
198 .width = 2,
199};
200
201static struct resource iq31244_flash_resource = {
202 .start = 0xf0000000,
203 .end = 0xf07fffff,
204 .flags = IORESOURCE_MEM,
205};
206
207static struct platform_device iq31244_flash_device = {
208 .name = "physmap-flash",
209 .id = 0,
210 .dev = {
211 .platform_data = &iq31244_flash_data,
212 },
213 .num_resources = 1,
214 .resource = &iq31244_flash_resource,
215};
216
217static struct plat_serial8250_port iq31244_serial_port[] = {
218 {
219 .mapbase = IQ31244_UART,
220 .membase = (char *)IQ31244_UART,
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100221 .irq = IRQ_IOP32X_XINT1,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100222 .flags = UPF_SKIP_TEST,
223 .iotype = UPIO_MEM,
224 .regshift = 0,
225 .uartclk = 1843200,
226 },
227 { },
228};
229
230static struct resource iq31244_uart_resource = {
231 .start = IQ31244_UART,
232 .end = IQ31244_UART + 7,
233 .flags = IORESOURCE_MEM,
234};
235
236static struct platform_device iq31244_serial_device = {
237 .name = "serial8250",
238 .id = PLAT8250_DEV_PLATFORM,
239 .dev = {
240 .platform_data = iq31244_serial_port,
241 },
242 .num_resources = 1,
243 .resource = &iq31244_uart_resource,
244};
245
246/*
247 * This function will send a SHUTDOWN_COMPLETE message to the PIC
248 * controller over I2C. We are not using the i2c subsystem since
249 * we are going to power off and it may be removed
250 */
251void ep80219_power_off(void)
252{
253 /*
254 * Send the Address byte w/ the start condition
255 */
256 *IOP3XX_IDBR1 = 0x60;
257 *IOP3XX_ICR1 = 0xE9;
258 mdelay(1);
259
260 /*
261 * Send the START_MSG byte w/ no start or stop condition
262 */
263 *IOP3XX_IDBR1 = 0x0F;
264 *IOP3XX_ICR1 = 0xE8;
265 mdelay(1);
266
267 /*
268 * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
269 * stop condition
270 */
271 *IOP3XX_IDBR1 = 0x03;
272 *IOP3XX_ICR1 = 0xE8;
273 mdelay(1);
274
275 /*
276 * Send an ignored byte w/ stop condition
277 */
278 *IOP3XX_IDBR1 = 0x00;
279 *IOP3XX_ICR1 = 0xEA;
280
281 while (1)
282 ;
283}
284
285static void __init iq31244_init_machine(void)
286{
Linus Walleij7b85b862013-09-09 16:39:51 +0200287 register_iop32x_gpio();
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100288 platform_device_register(&iop3xx_i2c0_device);
289 platform_device_register(&iop3xx_i2c1_device);
290 platform_device_register(&iq31244_flash_device);
291 platform_device_register(&iq31244_serial_device);
Dan Williams2492c842007-01-02 13:52:31 -0700292 platform_device_register(&iop3xx_dma_0_channel);
293 platform_device_register(&iop3xx_dma_1_channel);
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100294
Dan Williams094f1272007-03-16 19:31:06 +0100295 if (is_ep80219())
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100296 pm_power_off = ep80219_power_off;
Dan Williams2492c842007-01-02 13:52:31 -0700297
298 if (!is_80219())
299 platform_device_register(&iop3xx_aau_channel);
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100300}
301
Dan Williams094f1272007-03-16 19:31:06 +0100302static int __init force_ep80219_setup(char *str)
303{
304 force_ep80219 = 1;
305 return 1;
306}
307
308__setup("force_ep80219", force_ep80219_setup);
309
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100310MACHINE_START(IQ31244, "Intel IQ31244")
311 /* Maintainer: Intel Corp. */
Nicolas Pitre18967462011-07-05 22:38:12 -0400312 .atag_offset = 0x100,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100313 .map_io = iq31244_map_io,
Lennert Buytenhekc852ac82006-09-18 23:26:25 +0100314 .init_irq = iop32x_init_irq,
Stephen Warren6bb27d72012-11-08 12:40:59 -0700315 .init_time = iq31244_timer_init,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100316 .init_machine = iq31244_init_machine,
Russell Kingbec92b12011-11-05 11:26:32 +0000317 .restart = iop3xx_restart,
Lennert Buytenhekc680b772006-09-18 23:24:52 +0100318MACHINE_END
Dan Williams094f1272007-03-16 19:31:06 +0100319
320/* There should have been an ep80219 machine identifier from the beginning.
321 * Boot roms older than March 2007 do not know the ep80219 machine id. Pass
322 * "force_ep80219" on the kernel command line, otherwise iq31244 operation
323 * will be selected.
324 */
325MACHINE_START(EP80219, "Intel EP80219")
326 /* Maintainer: Intel Corp. */
Nicolas Pitre18967462011-07-05 22:38:12 -0400327 .atag_offset = 0x100,
Dan Williams094f1272007-03-16 19:31:06 +0100328 .map_io = iq31244_map_io,
329 .init_irq = iop32x_init_irq,
Stephen Warren6bb27d72012-11-08 12:40:59 -0700330 .init_time = iq31244_timer_init,
Dan Williams094f1272007-03-16 19:31:06 +0100331 .init_machine = iq31244_init_machine,
Russell Kingbec92b12011-11-05 11:26:32 +0000332 .restart = iop3xx_restart,
Dan Williams094f1272007-03-16 19:31:06 +0100333MACHINE_END