/arch/ppc/platforms/85xx/mpc8560_ads.c

https://bitbucket.org/evzijst/gittest · C · 210 lines · 135 code · 35 blank · 40 comment · 7 complexity · 4a8bd01c0cd20069426bd12a414ae7ab MD5 · raw file

  1. /*
  2. * arch/ppc/platforms/85xx/mpc8560_ads.c
  3. *
  4. * MPC8560ADS board specific routines
  5. *
  6. * Maintainer: Kumar Gala <kumar.gala@freescale.com>
  7. *
  8. * Copyright 2004 Freescale Semiconductor Inc.
  9. *
  10. * This program is free software; you can redistribute it and/or modify it
  11. * under the terms of the GNU General Public License as published by the
  12. * Free Software Foundation; either version 2 of the License, or (at your
  13. * option) any later version.
  14. */
  15. #include <linux/config.h>
  16. #include <linux/stddef.h>
  17. #include <linux/kernel.h>
  18. #include <linux/init.h>
  19. #include <linux/errno.h>
  20. #include <linux/reboot.h>
  21. #include <linux/pci.h>
  22. #include <linux/kdev_t.h>
  23. #include <linux/major.h>
  24. #include <linux/console.h>
  25. #include <linux/delay.h>
  26. #include <linux/irq.h>
  27. #include <linux/seq_file.h>
  28. #include <linux/root_dev.h>
  29. #include <linux/serial.h>
  30. #include <linux/tty.h> /* for linux/serial_core.h */
  31. #include <linux/serial_core.h>
  32. #include <linux/initrd.h>
  33. #include <linux/module.h>
  34. #include <linux/fsl_devices.h>
  35. #include <asm/system.h>
  36. #include <asm/pgtable.h>
  37. #include <asm/page.h>
  38. #include <asm/atomic.h>
  39. #include <asm/time.h>
  40. #include <asm/io.h>
  41. #include <asm/machdep.h>
  42. #include <asm/prom.h>
  43. #include <asm/open_pic.h>
  44. #include <asm/bootinfo.h>
  45. #include <asm/pci-bridge.h>
  46. #include <asm/mpc85xx.h>
  47. #include <asm/irq.h>
  48. #include <asm/immap_85xx.h>
  49. #include <asm/kgdb.h>
  50. #include <asm/ppc_sys.h>
  51. #include <asm/cpm2.h>
  52. #include <mm/mmu_decl.h>
  53. #include <syslib/cpm2_pic.h>
  54. #include <syslib/ppc85xx_common.h>
  55. #include <syslib/ppc85xx_setup.h>
  56. extern void cpm2_reset(void);
  57. /* ************************************************************************
  58. *
  59. * Setup the architecture
  60. *
  61. */
  62. static void __init
  63. mpc8560ads_setup_arch(void)
  64. {
  65. bd_t *binfo = (bd_t *) __res;
  66. unsigned int freq;
  67. struct gianfar_platform_data *pdata;
  68. cpm2_reset();
  69. /* get the core frequency */
  70. freq = binfo->bi_intfreq;
  71. if (ppc_md.progress)
  72. ppc_md.progress("mpc8560ads_setup_arch()", 0);
  73. /* Set loops_per_jiffy to a half-way reasonable value,
  74. for use until calibrate_delay gets called. */
  75. loops_per_jiffy = freq / HZ;
  76. #ifdef CONFIG_PCI
  77. /* setup PCI host bridges */
  78. mpc85xx_setup_hose();
  79. #endif
  80. /* setup the board related information for the enet controllers */
  81. pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1);
  82. pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
  83. pdata->interruptPHY = MPC85xx_IRQ_EXT5;
  84. pdata->phyid = 0;
  85. /* fixup phy address */
  86. pdata->phy_reg_addr += binfo->bi_immr_base;
  87. memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6);
  88. pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2);
  89. pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR;
  90. pdata->interruptPHY = MPC85xx_IRQ_EXT5;
  91. pdata->phyid = 1;
  92. /* fixup phy address */
  93. pdata->phy_reg_addr += binfo->bi_immr_base;
  94. memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6);
  95. #ifdef CONFIG_BLK_DEV_INITRD
  96. if (initrd_start)
  97. ROOT_DEV = Root_RAM0;
  98. else
  99. #endif
  100. #ifdef CONFIG_ROOT_NFS
  101. ROOT_DEV = Root_NFS;
  102. #else
  103. ROOT_DEV = Root_HDA1;
  104. #endif
  105. }
  106. static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs)
  107. {
  108. while ((irq = cpm2_get_irq(regs)) >= 0)
  109. __do_IRQ(irq, regs);
  110. return IRQ_HANDLED;
  111. }
  112. static struct irqaction cpm2_irqaction = {
  113. .handler = cpm2_cascade,
  114. .flags = SA_INTERRUPT,
  115. .mask = CPU_MASK_NONE,
  116. .name = "cpm2_cascade",
  117. };
  118. static void __init
  119. mpc8560_ads_init_IRQ(void)
  120. {
  121. /* Setup OpenPIC */
  122. mpc85xx_ads_init_IRQ();
  123. /* Setup CPM2 PIC */
  124. cpm2_init_IRQ();
  125. setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction);
  126. return;
  127. }
  128. /* ************************************************************************ */
  129. void __init
  130. platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  131. unsigned long r6, unsigned long r7)
  132. {
  133. /* parse_bootinfo must always be called first */
  134. parse_bootinfo(find_bootinfo());
  135. /*
  136. * If we were passed in a board information, copy it into the
  137. * residual data area.
  138. */
  139. if (r3) {
  140. memcpy((void *) __res, (void *) (r3 + KERNELBASE),
  141. sizeof (bd_t));
  142. }
  143. #if defined(CONFIG_BLK_DEV_INITRD)
  144. /*
  145. * If the init RAM disk has been configured in, and there's a valid
  146. * starting address for it, set it up.
  147. */
  148. if (r4) {
  149. initrd_start = r4 + KERNELBASE;
  150. initrd_end = r5 + KERNELBASE;
  151. }
  152. #endif /* CONFIG_BLK_DEV_INITRD */
  153. /* Copy the kernel command line arguments to a safe place. */
  154. if (r6) {
  155. *(char *) (r7 + KERNELBASE) = 0;
  156. strcpy(cmd_line, (char *) (r6 + KERNELBASE));
  157. }
  158. identify_ppc_sys_by_id(mfspr(SPRN_SVR));
  159. /* setup the PowerPC module struct */
  160. ppc_md.setup_arch = mpc8560ads_setup_arch;
  161. ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo;
  162. ppc_md.init_IRQ = mpc8560_ads_init_IRQ;
  163. ppc_md.get_irq = openpic_get_irq;
  164. ppc_md.restart = mpc85xx_restart;
  165. ppc_md.power_off = mpc85xx_power_off;
  166. ppc_md.halt = mpc85xx_halt;
  167. ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory;
  168. ppc_md.time_init = NULL;
  169. ppc_md.set_rtc_time = NULL;
  170. ppc_md.get_rtc_time = NULL;
  171. ppc_md.calibrate_decr = mpc85xx_calibrate_decr;
  172. if (ppc_md.progress)
  173. ppc_md.progress("mpc8560ads_init(): exit", 0);
  174. return;
  175. }