fsl_8xxx_pci.c 2.0 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright 2008 Extreme Engineering Solutions, Inc.
  4. * Copyright 2007-2008 Freescale Semiconductor, Inc.
  5. */
  6. #include <common.h>
  7. #include <init.h>
  8. #include <pci.h>
  9. #include <asm/fsl_pci.h>
  10. #include <asm/fsl_serdes.h>
  11. #include <asm/io.h>
  12. #include <linux/compiler.h>
  13. #include <linux/libfdt.h>
  14. #include <fdt_support.h>
  15. #ifdef CONFIG_PCI1
  16. static struct pci_controller pci1_hose;
  17. #endif
  18. void pci_init_board(void)
  19. {
  20. int first_free_busno = 0;
  21. #ifdef CONFIG_PCI1
  22. int pcie_ep;
  23. struct fsl_pci_info pci_info;
  24. volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  25. u32 devdisr = in_be32(&gur->devdisr);
  26. uint pci_spd_norm = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_SPD;
  27. uint pci_32 = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_PCI32;
  28. uint pci_arb = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_ARB;
  29. uint pcix = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1;
  30. uint freq = CONFIG_SYS_CLK_FREQ / 1000 / 1000;
  31. if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
  32. SET_STD_PCI_INFO(pci_info, 1);
  33. set_next_law(pci_info.mem_phys,
  34. law_size_bits(pci_info.mem_size), pci_info.law);
  35. set_next_law(pci_info.io_phys,
  36. law_size_bits(pci_info.io_size), pci_info.law);
  37. pcie_ep = fsl_setup_hose(&pci1_hose, pci_info.regs);
  38. printf("PCI1: %d bit %s, %s %d MHz, %s, %s\n",
  39. pci_32 ? 32 : 64,
  40. pcix ? "PCIX" : "PCI",
  41. pci_spd_norm ? ">=" : "<=",
  42. pcix ? freq * 2 : freq,
  43. pcie_ep ? "agent" : "host",
  44. pci_arb ? "arbiter" : "external-arbiter");
  45. first_free_busno = fsl_pci_init_port(&pci_info,
  46. &pci1_hose, first_free_busno);
  47. } else {
  48. printf("PCI1: disabled\n");
  49. }
  50. #elif defined CONFIG_ARCH_MPC8548
  51. volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  52. /* PCI1 not present on MPC8572 */
  53. setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1);
  54. #endif
  55. fsl_pcie_init_board(first_free_busno);
  56. }
  57. #if defined(CONFIG_OF_BOARD_SETUP)
  58. void ft_board_pci_setup(void *blob, struct bd_info *bd)
  59. {
  60. FT_FSL_PCI_SETUP;
  61. }
  62. #endif /* CONFIG_OF_BOARD_SETUP */