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>
15 #include <asm/mach/arch.h>
16 #include <asm/mach/map.h>
17 #include <asm/arch/at91rm9200.h>
18 #include <asm/arch/at91_pmc.h>
19 #include <asm/arch/at91_st.h>
24 static struct map_desc at91rm9200_io_desc[] __initdata = {
26 .virtual = AT91_VA_BASE_SYS,
27 .pfn = __phys_to_pfn(AT91_BASE_SYS),
31 .virtual = AT91_VA_BASE_EMAC,
32 .pfn = __phys_to_pfn(AT91RM9200_BASE_EMAC),
36 .virtual = AT91_IO_VIRT_BASE - AT91RM9200_SRAM_SIZE,
37 .pfn = __phys_to_pfn(AT91RM9200_SRAM_BASE),
38 .length = AT91RM9200_SRAM_SIZE,
43 /* --------------------------------------------------------------------
45 * -------------------------------------------------------------------- */
48 * The peripheral clocks.
50 static struct clk udc_clk = {
52 .pmc_mask = 1 << AT91RM9200_ID_UDP,
53 .type = CLK_TYPE_PERIPHERAL,
55 static struct clk ohci_clk = {
57 .pmc_mask = 1 << AT91RM9200_ID_UHP,
58 .type = CLK_TYPE_PERIPHERAL,
60 static struct clk ether_clk = {
62 .pmc_mask = 1 << AT91RM9200_ID_EMAC,
63 .type = CLK_TYPE_PERIPHERAL,
65 static struct clk mmc_clk = {
67 .pmc_mask = 1 << AT91RM9200_ID_MCI,
68 .type = CLK_TYPE_PERIPHERAL,
70 static struct clk twi_clk = {
72 .pmc_mask = 1 << AT91RM9200_ID_TWI,
73 .type = CLK_TYPE_PERIPHERAL,
75 static struct clk usart0_clk = {
77 .pmc_mask = 1 << AT91RM9200_ID_US0,
78 .type = CLK_TYPE_PERIPHERAL,
80 static struct clk usart1_clk = {
82 .pmc_mask = 1 << AT91RM9200_ID_US1,
83 .type = CLK_TYPE_PERIPHERAL,
85 static struct clk usart2_clk = {
87 .pmc_mask = 1 << AT91RM9200_ID_US2,
88 .type = CLK_TYPE_PERIPHERAL,
90 static struct clk usart3_clk = {
92 .pmc_mask = 1 << AT91RM9200_ID_US3,
93 .type = CLK_TYPE_PERIPHERAL,
95 static struct clk spi_clk = {
97 .pmc_mask = 1 << AT91RM9200_ID_SPI,
98 .type = CLK_TYPE_PERIPHERAL,
100 static struct clk pioA_clk = {
102 .pmc_mask = 1 << AT91RM9200_ID_PIOA,
103 .type = CLK_TYPE_PERIPHERAL,
105 static struct clk pioB_clk = {
107 .pmc_mask = 1 << AT91RM9200_ID_PIOB,
108 .type = CLK_TYPE_PERIPHERAL,
110 static struct clk pioC_clk = {
112 .pmc_mask = 1 << AT91RM9200_ID_PIOC,
113 .type = CLK_TYPE_PERIPHERAL,
115 static struct clk pioD_clk = {
117 .pmc_mask = 1 << AT91RM9200_ID_PIOD,
118 .type = CLK_TYPE_PERIPHERAL,
121 static struct clk *periph_clocks[] __initdata = {
142 * The four programmable clocks.
143 * You must configure pin multiplexing to bring these signals out.
145 static struct clk pck0 = {
147 .pmc_mask = AT91_PMC_PCK0,
148 .type = CLK_TYPE_PROGRAMMABLE,
151 static struct clk pck1 = {
153 .pmc_mask = AT91_PMC_PCK1,
154 .type = CLK_TYPE_PROGRAMMABLE,
157 static struct clk pck2 = {
159 .pmc_mask = AT91_PMC_PCK2,
160 .type = CLK_TYPE_PROGRAMMABLE,
163 static struct clk pck3 = {
165 .pmc_mask = AT91_PMC_PCK3,
166 .type = CLK_TYPE_PROGRAMMABLE,
170 static void __init at91rm9200_register_clocks(void)
174 for (i = 0; i < ARRAY_SIZE(periph_clocks); i++)
175 clk_register(periph_clocks[i]);
183 /* --------------------------------------------------------------------
185 * -------------------------------------------------------------------- */
187 static struct at91_gpio_bank at91rm9200_gpio[] = {
189 .id = AT91RM9200_ID_PIOA,
193 .id = AT91RM9200_ID_PIOB,
197 .id = AT91RM9200_ID_PIOC,
201 .id = AT91RM9200_ID_PIOD,
207 static void at91rm9200_reset(void)
210 * Perform a hardware reset with the use of the Watchdog timer.
212 at91_sys_write(AT91_ST_WDMR, AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
213 at91_sys_write(AT91_ST_CR, AT91_ST_WDRST);
217 /* --------------------------------------------------------------------
218 * AT91RM9200 processor initialization
219 * -------------------------------------------------------------------- */
220 void __init at91rm9200_initialize(unsigned long main_clock, unsigned short banks)
222 /* Map peripherals */
223 iotable_init(at91rm9200_io_desc, ARRAY_SIZE(at91rm9200_io_desc));
225 at91_arch_reset = at91rm9200_reset;
226 at91_extern_irq = (1 << AT91RM9200_ID_IRQ0) | (1 << AT91RM9200_ID_IRQ1)
227 | (1 << AT91RM9200_ID_IRQ2) | (1 << AT91RM9200_ID_IRQ3)
228 | (1 << AT91RM9200_ID_IRQ4) | (1 << AT91RM9200_ID_IRQ5)
229 | (1 << AT91RM9200_ID_IRQ6);
231 /* Init clock subsystem */
232 at91_clock_init(main_clock);
234 /* Register the processor-specific clocks */
235 at91rm9200_register_clocks();
237 /* Initialize GPIO subsystem */
238 at91_gpio_init(at91rm9200_gpio, banks);
242 /* --------------------------------------------------------------------
243 * Interrupt initialization
244 * -------------------------------------------------------------------- */
247 * The default interrupt priority levels (0 = lowest, 7 = highest).
249 static unsigned int at91rm9200_default_irq_priority[NR_AIC_IRQS] __initdata = {
250 7, /* Advanced Interrupt Controller (FIQ) */
251 7, /* System Peripherals */
252 0, /* Parallel IO Controller A */
253 0, /* Parallel IO Controller B */
254 0, /* Parallel IO Controller C */
255 0, /* Parallel IO Controller D */
260 0, /* Multimedia Card Interface */
261 4, /* USB Device Port */
262 0, /* Two-Wire Interface */
263 6, /* Serial Peripheral Interface */
264 5, /* Serial Synchronous Controller 0 */
265 5, /* Serial Synchronous Controller 1 */
266 5, /* Serial Synchronous Controller 2 */
267 0, /* Timer Counter 0 */
268 0, /* Timer Counter 1 */
269 0, /* Timer Counter 2 */
270 0, /* Timer Counter 3 */
271 0, /* Timer Counter 4 */
272 0, /* Timer Counter 5 */
273 3, /* USB Host port */
274 3, /* Ethernet MAC */
275 0, /* Advanced Interrupt Controller (IRQ0) */
276 0, /* Advanced Interrupt Controller (IRQ1) */
277 0, /* Advanced Interrupt Controller (IRQ2) */
278 0, /* Advanced Interrupt Controller (IRQ3) */
279 0, /* Advanced Interrupt Controller (IRQ4) */
280 0, /* Advanced Interrupt Controller (IRQ5) */
281 0 /* Advanced Interrupt Controller (IRQ6) */
284 void __init at91rm9200_init_interrupts(unsigned int priority[NR_AIC_IRQS])
287 priority = at91rm9200_default_irq_priority;
289 /* Initialize the AIC interrupt controller */
290 at91_aic_init(priority);
292 /* Enable GPIO interrupts */
293 at91_gpio_irq_setup();