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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
c680b77e LB |
2 | /* |
3 | * arch/arm/mach-iop32x/iq31244.c | |
4 | * | |
5 | * Board support code for the Intel EP80219 and IQ31244 platforms. | |
6 | * | |
7 | * Author: Rory Bolt <rorybolt@pacbell.net> | |
8 | * Copyright (C) 2002 Rory Bolt | |
9 | * Copyright 2003 (c) MontaVista, Software, Inc. | |
10 | * Copyright (C) 2004 Intel Corp. | |
c680b77e LB |
11 | */ |
12 | ||
13 | #include <linux/mm.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/pci.h> | |
18 | #include <linux/pm.h> | |
19 | #include <linux/string.h> | |
c680b77e LB |
20 | #include <linux/serial_core.h> |
21 | #include <linux/serial_8250.h> | |
22 | #include <linux/mtd/physmap.h> | |
23 | #include <linux/platform_device.h> | |
fced80c7 | 24 | #include <linux/io.h> |
fdb7e884 | 25 | #include <linux/gpio/machine.h> |
0ba8b9b2 | 26 | #include <asm/cputype.h> |
c680b77e LB |
27 | #include <asm/irq.h> |
28 | #include <asm/mach/arch.h> | |
29 | #include <asm/mach/map.h> | |
30 | #include <asm/mach/pci.h> | |
31 | #include <asm/mach/time.h> | |
32 | #include <asm/mach-types.h> | |
33 | #include <asm/page.h> | |
34 | #include <asm/pgtable.h> | |
a1f487d7 AB |
35 | |
36 | #include "hardware.h" | |
37 | #include "irqs.h" | |
7b85b867 | 38 | #include "gpio-iop32x.h" |
c680b77e LB |
39 | |
40 | /* | |
094f1275 DW |
41 | * Until March of 2007 iq31244 platforms and ep80219 platforms shared the |
42 | * same machine id, and the processor type was used to select board type. | |
43 | * However this assumption breaks for an iq80219 board which is an iop219 | |
44 | * processor on an iq31244 board. The force_ep80219 flag has been added | |
45 | * for old boot loaders using the iq31244 machine id for an ep80219 platform. | |
c680b77e | 46 | */ |
094f1275 DW |
47 | static int force_ep80219; |
48 | ||
c680b77e LB |
49 | static int is_80219(void) |
50 | { | |
0ba8b9b2 | 51 | return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20); |
c680b77e LB |
52 | } |
53 | ||
094f1275 DW |
54 | static int is_ep80219(void) |
55 | { | |
56 | if (machine_is_ep80219() || force_ep80219) | |
57 | return 1; | |
58 | else | |
59 | return 0; | |
60 | } | |
61 | ||
c680b77e LB |
62 | |
63 | /* | |
64 | * EP80219/IQ31244 timer tick configuration. | |
65 | */ | |
66 | static void __init iq31244_timer_init(void) | |
67 | { | |
094f1275 | 68 | if (is_ep80219()) { |
c680b77e | 69 | /* 33.333 MHz crystal. */ |
3668b45d | 70 | iop_init_time(200000000); |
c680b77e LB |
71 | } else { |
72 | /* 33.000 MHz crystal. */ | |
3668b45d | 73 | iop_init_time(198000000); |
c680b77e LB |
74 | } |
75 | } | |
76 | ||
c680b77e LB |
77 | |
78 | /* | |
79 | * IQ31244 I/O. | |
80 | */ | |
81 | static struct map_desc iq31244_io_desc[] __initdata = { | |
82 | { /* on-board devices */ | |
83 | .virtual = IQ31244_UART, | |
84 | .pfn = __phys_to_pfn(IQ31244_UART), | |
85 | .length = 0x00100000, | |
86 | .type = MT_DEVICE, | |
87 | }, | |
88 | }; | |
89 | ||
90 | void __init iq31244_map_io(void) | |
91 | { | |
92 | iop3xx_map_io(); | |
93 | iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc)); | |
94 | } | |
95 | ||
96 | ||
97 | /* | |
98 | * EP80219/IQ31244 PCI. | |
99 | */ | |
d73d8011 | 100 | static int __init |
d5341942 | 101 | ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
c680b77e LB |
102 | { |
103 | int irq; | |
104 | ||
105 | if (slot == 0) { | |
106 | /* CFlash */ | |
c852ac80 | 107 | irq = IRQ_IOP32X_XINT1; |
c680b77e LB |
108 | } else if (slot == 1) { |
109 | /* 82551 Pro 100 */ | |
c852ac80 | 110 | irq = IRQ_IOP32X_XINT0; |
c680b77e LB |
111 | } else if (slot == 2) { |
112 | /* PCI-X Slot */ | |
c852ac80 | 113 | irq = IRQ_IOP32X_XINT3; |
c680b77e LB |
114 | } else if (slot == 3) { |
115 | /* SATA */ | |
c852ac80 | 116 | irq = IRQ_IOP32X_XINT2; |
c680b77e LB |
117 | } else { |
118 | printk(KERN_ERR "ep80219_pci_map_irq() called for unknown " | |
119 | "device PCI:%d:%d:%d\n", dev->bus->number, | |
120 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
121 | irq = -1; | |
122 | } | |
123 | ||
124 | return irq; | |
125 | } | |
126 | ||
127 | static struct hw_pci ep80219_pci __initdata = { | |
c680b77e | 128 | .nr_controllers = 1, |
c23bfc38 | 129 | .ops = &iop3xx_ops, |
c680b77e LB |
130 | .setup = iop3xx_pci_setup, |
131 | .preinit = iop3xx_pci_preinit, | |
c680b77e LB |
132 | .map_irq = ep80219_pci_map_irq, |
133 | }; | |
134 | ||
d73d8011 | 135 | static int __init |
d5341942 | 136 | iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
c680b77e LB |
137 | { |
138 | int irq; | |
139 | ||
140 | if (slot == 0) { | |
141 | /* CFlash */ | |
c852ac80 | 142 | irq = IRQ_IOP32X_XINT1; |
c680b77e LB |
143 | } else if (slot == 1) { |
144 | /* SATA */ | |
c852ac80 | 145 | irq = IRQ_IOP32X_XINT2; |
c680b77e LB |
146 | } else if (slot == 2) { |
147 | /* PCI-X Slot */ | |
c852ac80 | 148 | irq = IRQ_IOP32X_XINT3; |
c680b77e LB |
149 | } else if (slot == 3) { |
150 | /* 82546 GigE */ | |
c852ac80 | 151 | irq = IRQ_IOP32X_XINT0; |
c680b77e | 152 | } else { |
c852ac80 | 153 | printk(KERN_ERR "iq31244_pci_map_irq called for unknown " |
c680b77e LB |
154 | "device PCI:%d:%d:%d\n", dev->bus->number, |
155 | PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)); | |
156 | irq = -1; | |
157 | } | |
158 | ||
159 | return irq; | |
160 | } | |
161 | ||
162 | static struct hw_pci iq31244_pci __initdata = { | |
c680b77e | 163 | .nr_controllers = 1, |
c23bfc38 | 164 | .ops = &iop3xx_ops, |
c680b77e LB |
165 | .setup = iop3xx_pci_setup, |
166 | .preinit = iop3xx_pci_preinit, | |
c680b77e LB |
167 | .map_irq = iq31244_pci_map_irq, |
168 | }; | |
169 | ||
170 | static int __init iq31244_pci_init(void) | |
171 | { | |
c34002c1 DW |
172 | if (is_ep80219()) |
173 | pci_common_init(&ep80219_pci); | |
174 | else if (machine_is_iq31244()) { | |
c680b77e | 175 | if (is_80219()) { |
094f1275 DW |
176 | printk("note: iq31244 board type has been selected\n"); |
177 | printk("note: to select ep80219 operation:\n"); | |
178 | printk("\t1/ specify \"force_ep80219\" on the kernel" | |
179 | " command line\n"); | |
180 | printk("\t2/ update boot loader to pass" | |
181 | " the ep80219 id: %d\n", MACH_TYPE_EP80219); | |
c680b77e | 182 | } |
c34002c1 | 183 | pci_common_init(&iq31244_pci); |
c680b77e LB |
184 | } |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | subsys_initcall(iq31244_pci_init); | |
190 | ||
191 | ||
192 | /* | |
193 | * IQ31244 machine initialisation. | |
194 | */ | |
195 | static struct physmap_flash_data iq31244_flash_data = { | |
196 | .width = 2, | |
197 | }; | |
198 | ||
199 | static struct resource iq31244_flash_resource = { | |
200 | .start = 0xf0000000, | |
201 | .end = 0xf07fffff, | |
202 | .flags = IORESOURCE_MEM, | |
203 | }; | |
204 | ||
205 | static struct platform_device iq31244_flash_device = { | |
206 | .name = "physmap-flash", | |
207 | .id = 0, | |
208 | .dev = { | |
209 | .platform_data = &iq31244_flash_data, | |
210 | }, | |
211 | .num_resources = 1, | |
212 | .resource = &iq31244_flash_resource, | |
213 | }; | |
214 | ||
215 | static struct plat_serial8250_port iq31244_serial_port[] = { | |
216 | { | |
217 | .mapbase = IQ31244_UART, | |
218 | .membase = (char *)IQ31244_UART, | |
c852ac80 | 219 | .irq = IRQ_IOP32X_XINT1, |
c680b77e LB |
220 | .flags = UPF_SKIP_TEST, |
221 | .iotype = UPIO_MEM, | |
222 | .regshift = 0, | |
223 | .uartclk = 1843200, | |
224 | }, | |
225 | { }, | |
226 | }; | |
227 | ||
228 | static struct resource iq31244_uart_resource = { | |
229 | .start = IQ31244_UART, | |
230 | .end = IQ31244_UART + 7, | |
231 | .flags = IORESOURCE_MEM, | |
232 | }; | |
233 | ||
234 | static struct platform_device iq31244_serial_device = { | |
235 | .name = "serial8250", | |
236 | .id = PLAT8250_DEV_PLATFORM, | |
237 | .dev = { | |
238 | .platform_data = iq31244_serial_port, | |
239 | }, | |
240 | .num_resources = 1, | |
241 | .resource = &iq31244_uart_resource, | |
242 | }; | |
243 | ||
244 | /* | |
245 | * This function will send a SHUTDOWN_COMPLETE message to the PIC | |
246 | * controller over I2C. We are not using the i2c subsystem since | |
247 | * we are going to power off and it may be removed | |
248 | */ | |
249 | void ep80219_power_off(void) | |
250 | { | |
251 | /* | |
252 | * Send the Address byte w/ the start condition | |
253 | */ | |
254 | *IOP3XX_IDBR1 = 0x60; | |
255 | *IOP3XX_ICR1 = 0xE9; | |
256 | mdelay(1); | |
257 | ||
258 | /* | |
259 | * Send the START_MSG byte w/ no start or stop condition | |
260 | */ | |
261 | *IOP3XX_IDBR1 = 0x0F; | |
262 | *IOP3XX_ICR1 = 0xE8; | |
263 | mdelay(1); | |
264 | ||
265 | /* | |
266 | * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or | |
267 | * stop condition | |
268 | */ | |
269 | *IOP3XX_IDBR1 = 0x03; | |
270 | *IOP3XX_ICR1 = 0xE8; | |
271 | mdelay(1); | |
272 | ||
273 | /* | |
274 | * Send an ignored byte w/ stop condition | |
275 | */ | |
276 | *IOP3XX_IDBR1 = 0x00; | |
277 | *IOP3XX_ICR1 = 0xEA; | |
278 | ||
279 | while (1) | |
280 | ; | |
281 | } | |
282 | ||
283 | static void __init iq31244_init_machine(void) | |
284 | { | |
7b85b867 | 285 | register_iop32x_gpio(); |
fdb7e884 LW |
286 | gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup); |
287 | gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup); | |
c680b77e LB |
288 | 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); | |
2492c845 DW |
292 | platform_device_register(&iop3xx_dma_0_channel); |
293 | platform_device_register(&iop3xx_dma_1_channel); | |
c680b77e | 294 | |
094f1275 | 295 | if (is_ep80219()) |
c680b77e | 296 | pm_power_off = ep80219_power_off; |
2492c845 DW |
297 | |
298 | if (!is_80219()) | |
299 | platform_device_register(&iop3xx_aau_channel); | |
c680b77e LB |
300 | } |
301 | ||
094f1275 DW |
302 | static 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 | ||
c680b77e LB |
310 | MACHINE_START(IQ31244, "Intel IQ31244") |
311 | /* Maintainer: Intel Corp. */ | |
1896746d | 312 | .atag_offset = 0x100, |
c680b77e | 313 | .map_io = iq31244_map_io, |
c852ac80 | 314 | .init_irq = iop32x_init_irq, |
6bb27d73 | 315 | .init_time = iq31244_timer_init, |
c680b77e | 316 | .init_machine = iq31244_init_machine, |
bec92b1e | 317 | .restart = iop3xx_restart, |
c680b77e | 318 | MACHINE_END |
094f1275 DW |
319 | |
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 | */ | |
325 | MACHINE_START(EP80219, "Intel EP80219") | |
326 | /* Maintainer: Intel Corp. */ | |
1896746d | 327 | .atag_offset = 0x100, |
094f1275 DW |
328 | .map_io = iq31244_map_io, |
329 | .init_irq = iop32x_init_irq, | |
6bb27d73 | 330 | .init_time = iq31244_timer_init, |
094f1275 | 331 | .init_machine = iq31244_init_machine, |
bec92b1e | 332 | .restart = iop3xx_restart, |
094f1275 | 333 | MACHINE_END |