board/xes/common/fsl_8xxx_pci.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2008 Extreme Engineering Solutions, Inc.
   4  * Copyright 2007-2008 Freescale Semiconductor, Inc.
   5  */
   6
   7 #include <common.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
  16
  17 #ifdef CONFIG_PCI1
  18 static struct pci_controller pci1_hose;
  19 #endif
  20
  21 void pci_init_board(void)
  22 {
  23         int first_free_busno = 0;
  24
  25 #ifdef CONFIG_PCI1
  26         int pcie_ep;
  27         struct fsl_pci_info pci_info;
  28         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  29         u32 devdisr = in_be32(&gur->devdisr);
  30         uint pci_spd_norm = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_SPD;
  31         uint pci_32 = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_PCI32;
  32         uint pci_arb = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_ARB;
  33         uint pcix = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1;
  34         uint freq = CONFIG_SYS_CLK_FREQ / 1000 / 1000;
  35
  36         if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
  37                 SET_STD_PCI_INFO(pci_info, 1);
  38                 set_next_law(pci_info.mem_phys,
  39                         law_size_bits(pci_info.mem_size), pci_info.law);
  40                 set_next_law(pci_info.io_phys,
  41                         law_size_bits(pci_info.io_size), pci_info.law);
  42
  43                 pcie_ep = fsl_setup_hose(&pci1_hose, pci_info.regs);
  44                 printf("PCI1: %d bit %s, %s %d MHz, %s, %s\n",
  45                         pci_32 ? 32 : 64,
  46                         pcix ? "PCIX" : "PCI",
  47                         pci_spd_norm ? ">=" : "<=",
  48                         pcix ? freq * 2 : freq,
  49                         pcie_ep ? "agent" : "host",
  50                         pci_arb ? "arbiter" : "external-arbiter");
  51
  52                 first_free_busno = fsl_pci_init_port(&pci_info,
  53                                         &pci1_hose, first_free_busno);
  54         } else {
  55                 printf("PCI1: disabled\n");
  56         }
  57 #elif defined CONFIG_ARCH_MPC8548
  58         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  59         /* PCI1 not present on MPC8572 */
  60         setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1);
  61 #endif
  62
  63         fsl_pcie_init_board(first_free_busno);
  64 }
  65
  66 #if defined(CONFIG_OF_BOARD_SETUP)
  67 void ft_board_pci_setup(void *blob, bd_t *bd)
  68 {
  69         FT_FSL_PCI_SETUP;
  70 }
  71 #endif /* CONFIG_OF_BOARD_SETUP */