cpu.c 4.5 KB

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  1. /* linux/arch/arm/mach-s5pv210/cpu.c
  2. *
  3. * Copyright (c) 2010 Samsung Electronics Co., Ltd.
  4. * http://www.samsung.com
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License version 2 as
  8. * published by the Free Software Foundation.
  9. */
  10. #include <linux/kernel.h>
  11. #include <linux/types.h>
  12. #include <linux/interrupt.h>
  13. #include <linux/list.h>
  14. #include <linux/timer.h>
  15. #include <linux/init.h>
  16. #include <linux/module.h>
  17. #include <linux/clk.h>
  18. #include <linux/io.h>
  19. #include <linux/sysdev.h>
  20. #include <linux/platform_device.h>
  21. #include <linux/sched.h>
  22. #include <linux/dma-mapping.h>
  23. #include <asm/mach/arch.h>
  24. #include <asm/mach/map.h>
  25. #include <asm/mach/irq.h>
  26. #include <asm/proc-fns.h>
  27. #include <mach/map.h>
  28. #include <mach/regs-clock.h>
  29. #include <plat/cpu.h>
  30. #include <plat/devs.h>
  31. #include <plat/clock.h>
  32. #include <plat/fb-core.h>
  33. #include <plat/s5pv210.h>
  34. #include <plat/adc-core.h>
  35. #include <plat/ata-core.h>
  36. #include <plat/fimc-core.h>
  37. #include <plat/iic-core.h>
  38. #include <plat/keypad-core.h>
  39. #include <plat/sdhci.h>
  40. #include <plat/reset.h>
  41. #include <plat/tv-core.h>
  42. /* Initial IO mappings */
  43. static struct map_desc s5pv210_iodesc[] __initdata = {
  44. {
  45. .virtual = (unsigned long)S5P_VA_SYSTIMER,
  46. .pfn = __phys_to_pfn(S5PV210_PA_SYSTIMER),
  47. .length = SZ_4K,
  48. .type = MT_DEVICE,
  49. }, {
  50. .virtual = (unsigned long)S5P_VA_GPIO,
  51. .pfn = __phys_to_pfn(S5PV210_PA_GPIO),
  52. .length = SZ_4K,
  53. .type = MT_DEVICE,
  54. }, {
  55. .virtual = (unsigned long)VA_VIC0,
  56. .pfn = __phys_to_pfn(S5PV210_PA_VIC0),
  57. .length = SZ_16K,
  58. .type = MT_DEVICE,
  59. }, {
  60. .virtual = (unsigned long)VA_VIC1,
  61. .pfn = __phys_to_pfn(S5PV210_PA_VIC1),
  62. .length = SZ_16K,
  63. .type = MT_DEVICE,
  64. }, {
  65. .virtual = (unsigned long)VA_VIC2,
  66. .pfn = __phys_to_pfn(S5PV210_PA_VIC2),
  67. .length = SZ_16K,
  68. .type = MT_DEVICE,
  69. }, {
  70. .virtual = (unsigned long)VA_VIC3,
  71. .pfn = __phys_to_pfn(S5PV210_PA_VIC3),
  72. .length = SZ_16K,
  73. .type = MT_DEVICE,
  74. }, {
  75. .virtual = (unsigned long)S3C_VA_UART,
  76. .pfn = __phys_to_pfn(S3C_PA_UART),
  77. .length = SZ_512K,
  78. .type = MT_DEVICE,
  79. }, {
  80. .virtual = (unsigned long)S5P_VA_DMC0,
  81. .pfn = __phys_to_pfn(S5PV210_PA_DMC0),
  82. .length = SZ_4K,
  83. .type = MT_DEVICE,
  84. }, {
  85. .virtual = (unsigned long)S5P_VA_DMC1,
  86. .pfn = __phys_to_pfn(S5PV210_PA_DMC1),
  87. .length = SZ_4K,
  88. .type = MT_DEVICE,
  89. }, {
  90. .virtual = (unsigned long)S3C_VA_USB_HSPHY,
  91. .pfn =__phys_to_pfn(S5PV210_PA_HSPHY),
  92. .length = SZ_4K,
  93. .type = MT_DEVICE,
  94. }
  95. };
  96. static void s5pv210_idle(void)
  97. {
  98. if (!need_resched())
  99. cpu_do_idle();
  100. local_irq_enable();
  101. }
  102. static void s5pv210_sw_reset(void)
  103. {
  104. __raw_writel(0x1, S5P_SWRESET);
  105. }
  106. /* s5pv210_map_io
  107. *
  108. * register the standard cpu IO areas
  109. */
  110. void __init s5pv210_map_io(void)
  111. {
  112. iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
  113. init_consistent_dma_size(14 << 20);
  114. /* initialise device information early */
  115. s5pv210_default_sdhci0();
  116. s5pv210_default_sdhci1();
  117. s5pv210_default_sdhci2();
  118. s5pv210_default_sdhci3();
  119. s3c_adc_setname("samsung-adc-v3");
  120. s3c_cfcon_setname("s5pv210-pata");
  121. s3c_fimc_setname(0, "s5pv210-fimc");
  122. s3c_fimc_setname(1, "s5pv210-fimc");
  123. s3c_fimc_setname(2, "s5pv210-fimc");
  124. /* the i2c devices are directly compatible with s3c2440 */
  125. s3c_i2c0_setname("s3c2440-i2c");
  126. s3c_i2c1_setname("s3c2440-i2c");
  127. s3c_i2c2_setname("s3c2440-i2c");
  128. s3c_fb_setname("s5pv210-fb");
  129. /* Use s5pv210-keypad instead of samsung-keypad */
  130. samsung_keypad_setname("s5pv210-keypad");
  131. /* setup TV devices */
  132. s5p_hdmi_setname("s5pv210-hdmi");
  133. }
  134. void __init s5pv210_init_clocks(int xtal)
  135. {
  136. printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
  137. s3c24xx_register_baseclocks(xtal);
  138. s5p_register_clocks(xtal);
  139. s5pv210_register_clocks();
  140. s5pv210_setup_clocks();
  141. }
  142. void __init s5pv210_init_irq(void)
  143. {
  144. u32 vic[4]; /* S5PV210 supports 4 VIC */
  145. /* All the VICs are fully populated. */
  146. vic[0] = ~0;
  147. vic[1] = ~0;
  148. vic[2] = ~0;
  149. vic[3] = ~0;
  150. s5p_init_irq(vic, ARRAY_SIZE(vic));
  151. }
  152. struct sysdev_class s5pv210_sysclass = {
  153. .name = "s5pv210-core",
  154. };
  155. static struct sys_device s5pv210_sysdev = {
  156. .cls = &s5pv210_sysclass,
  157. };
  158. static int __init s5pv210_core_init(void)
  159. {
  160. return sysdev_class_register(&s5pv210_sysclass);
  161. }
  162. core_initcall(s5pv210_core_init);
  163. int __init s5pv210_init(void)
  164. {
  165. printk(KERN_INFO "S5PV210: Initializing architecture\n");
  166. /* set idle function */
  167. pm_idle = s5pv210_idle;
  168. /* set sw_reset function */
  169. s5p_reset_hook = s5pv210_sw_reset;
  170. return sysdev_register(&s5pv210_sysdev);
  171. }