2 * arch/arm/mach-at91/at91rm9200.c
4 * Copyright (C) 2005 SAN People
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
13 #include <linux/module.h>
16 #include <asm/mach/arch.h>
17 #include <asm/mach/map.h>
18 #include <mach/at91rm9200.h>
19 #include <mach/at91_pmc.h>
20 #include <mach/at91_st.h>
25 static struct map_desc at91rm9200_io_desc[] __initdata = {
27 .virtual = AT91_VA_BASE_SYS,
28 .pfn = __phys_to_pfn(AT91_BASE_SYS),
32 .virtual = AT91_VA_BASE_EMAC,
33 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
37 .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
38 .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
39 .length = AT91RM9200_SRAM_SIZE,
44 /* --------------------------------------------------------------------
46 * -------------------------------------------------------------------- */
49 * The peripheral clocks.
51 static struct clk udc_clk = {
53 .pmc_mask = 1 << AT91RM9200_ID_UDP,
54 .type = CLK_TYPE_PERIPHERAL,
56 static struct clk ohci_clk = {
58 .pmc_mask = 1 << AT91RM9200_ID_UHP,
59 .type = CLK_TYPE_PERIPHERAL,
61 static struct clk ether_clk = {
63 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
64 .type = CLK_TYPE_PERIPHERAL,
66 static struct clk mmc_clk = {
68 .pmc_mask = 1 << AT91RM9200_ID_MCI,
69 .type = CLK_TYPE_PERIPHERAL,
71 static struct clk twi_clk = {
73 .pmc_mask = 1 << AT91RM9200_ID_TWI,
74 .type = CLK_TYPE_PERIPHERAL,
76 static struct clk usart0_clk = {
78 .pmc_mask = 1 << AT91RM9200_ID_US0,
79 .type = CLK_TYPE_PERIPHERAL,
81 static struct clk usart1_clk = {
83 .pmc_mask = 1 << AT91RM9200_ID_US1,
84 .type = CLK_TYPE_PERIPHERAL,
86 static struct clk usart2_clk = {
88 .pmc_mask = 1 << AT91RM9200_ID_US2,
89 .type = CLK_TYPE_PERIPHERAL,
91 static struct clk usart3_clk = {
93 .pmc_mask = 1 << AT91RM9200_ID_US3,
94 .type = CLK_TYPE_PERIPHERAL,
96 static struct clk spi_clk = {
98 .pmc_mask = 1 << AT91RM9200_ID_SPI,
99 .type = CLK_TYPE_PERIPHERAL,
101 static struct clk pioA_clk = {
103 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
104 .type = CLK_TYPE_PERIPHERAL,
106 static struct clk pioB_clk = {
108 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
109 .type = CLK_TYPE_PERIPHERAL,
111 static struct clk pioC_clk = {
113 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
114 .type = CLK_TYPE_PERIPHERAL,
116 static struct clk pioD_clk = {
118 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
119 .type = CLK_TYPE_PERIPHERAL,
121 static struct clk ssc0_clk = {
123 .pmc_mask = 1 << AT91RM9200_ID_SSC0,
124 .type = CLK_TYPE_PERIPHERAL,
126 static struct clk ssc1_clk = {
128 .pmc_mask = 1 << AT91RM9200_ID_SSC1,
129 .type = CLK_TYPE_PERIPHERAL,
131 static struct clk ssc2_clk = {
133 .pmc_mask = 1 << AT91RM9200_ID_SSC2,
134 .type = CLK_TYPE_PERIPHERAL,
136 static struct clk tc0_clk = {
138 .pmc_mask = 1 << AT91RM9200_ID_TC0,
139 .type = CLK_TYPE_PERIPHERAL,
141 static struct clk tc1_clk = {
143 .pmc_mask = 1 << AT91RM9200_ID_TC1,
144 .type = CLK_TYPE_PERIPHERAL,
146 static struct clk tc2_clk = {
148 .pmc_mask = 1 << AT91RM9200_ID_TC2,
149 .type = CLK_TYPE_PERIPHERAL,
151 static struct clk tc3_clk = {
153 .pmc_mask = 1 << AT91RM9200_ID_TC3,
154 .type = CLK_TYPE_PERIPHERAL,
156 static struct clk tc4_clk = {
158 .pmc_mask = 1 << AT91RM9200_ID_TC4,
159 .type = CLK_TYPE_PERIPHERAL,
161 static struct clk tc5_clk = {
163 .pmc_mask = 1 << AT91RM9200_ID_TC5,
164 .type = CLK_TYPE_PERIPHERAL,
167 static struct clk *periph_clocks[] __initdata = {
195 * The four programmable clocks.
196 * You must configure pin multiplexing to bring these signals out.
198 static struct clk pck0 = {
200 .pmc_mask = AT91_PMC_PCK0,
201 .type = CLK_TYPE_PROGRAMMABLE,
204 static struct clk pck1 = {
206 .pmc_mask = AT91_PMC_PCK1,
207 .type = CLK_TYPE_PROGRAMMABLE,
210 static struct clk pck2 = {
212 .pmc_mask = AT91_PMC_PCK2,
213 .type = CLK_TYPE_PROGRAMMABLE,
216 static struct clk pck3 = {
218 .pmc_mask = AT91_PMC_PCK3,
219 .type = CLK_TYPE_PROGRAMMABLE,
223 static void __init at91rm9200_register_clocks(void)
227 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
228 clk_register(periph_clocks[i]);
236 /* --------------------------------------------------------------------
238 * -------------------------------------------------------------------- */
240 static struct at91_gpio_bank at91rm9200_gpio[] = {
242 .id = AT91RM9200_ID_PIOA,
246 .id = AT91RM9200_ID_PIOB,
250 .id = AT91RM9200_ID_PIOC,
254 .id = AT91RM9200_ID_PIOD,
260 static void at91rm9200_reset(void)
263 * Perform a hardware reset with the use of the Watchdog timer.
265 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
266 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
270 /* --------------------------------------------------------------------
271 * AT91RM9200 processor initialization
272 * -------------------------------------------------------------------- */
273 void __init at91rm9200_initialize(unsigned long main_clock, unsigned short banks)
275 /* Map peripherals */
276 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
278 at91_arch_reset = at91rm9200_reset;
279 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
280 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
281 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
282 | (1 << AT91RM9200_ID_IRQ6);
284 /* Init clock subsystem */
285 at91_clock_init(main_clock);
287 /* Register the processor-specific clocks */
288 at91rm9200_register_clocks();
290 /* Initialize GPIO subsystem */
291 at91_gpio_init(at91rm9200_gpio, banks);
295 /* --------------------------------------------------------------------
296 * Interrupt initialization
297 * -------------------------------------------------------------------- */
300 * The default interrupt priority levels (0 = lowest, 7 = highest).
302 static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
303 7, /* Advanced Interrupt Controller (FIQ) */
304 7, /* System Peripherals */
305 1, /* Parallel IO Controller A */
306 1, /* Parallel IO Controller B */
307 1, /* Parallel IO Controller C */
308 1, /* Parallel IO Controller D */
313 0, /* Multimedia Card Interface */
314 2, /* USB Device Port */
315 6, /* Two-Wire Interface */
316 5, /* Serial Peripheral Interface */
317 4, /* Serial Synchronous Controller 0 */
318 4, /* Serial Synchronous Controller 1 */
319 4, /* Serial Synchronous Controller 2 */
320 0, /* Timer Counter 0 */
321 0, /* Timer Counter 1 */
322 0, /* Timer Counter 2 */
323 0, /* Timer Counter 3 */
324 0, /* Timer Counter 4 */
325 0, /* Timer Counter 5 */
326 2, /* USB Host port */
327 3, /* Ethernet MAC */
328 0, /* Advanced Interrupt Controller (IRQ0) */
329 0, /* Advanced Interrupt Controller (IRQ1) */
330 0, /* Advanced Interrupt Controller (IRQ2) */
331 0, /* Advanced Interrupt Controller (IRQ3) */
332 0, /* Advanced Interrupt Controller (IRQ4) */
333 0, /* Advanced Interrupt Controller (IRQ5) */
334 0 /* Advanced Interrupt Controller (IRQ6) */
337 void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
340 priority = at91rm9200_default_irq_priority;
342 /* Initialize the AIC interrupt controller */
343 at91_aic_init(priority);
345 /* Enable GPIO interrupts */
346 at91_gpio_irq_setup();