1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * pci.c -- WindRiver SBC8349 PCI board support. 4 * Copyright (c) 2006 Wind River Systems, Inc. 5 * Copyright (C) 2006-2009 Freescale Semiconductor, Inc. 6 * 7 * Based on MPC8349 PCI support but w/o PIB related code. 8 */ 9 10 #include <asm/mmu.h> 11 #include <asm/io.h> 12 #include <common.h> 13 #include <mpc83xx.h> 14 #include <pci.h> 15 #include <i2c.h> 16 #include <asm/fsl_i2c.h> 17 18 static struct pci_region pci1_regions[] = { 19 { 20 bus_start: CONFIG_SYS_PCI1_MEM_BASE, 21 phys_start: CONFIG_SYS_PCI1_MEM_PHYS, 22 size: CONFIG_SYS_PCI1_MEM_SIZE, 23 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH 24 }, 25 { 26 bus_start: CONFIG_SYS_PCI1_IO_BASE, 27 phys_start: CONFIG_SYS_PCI1_IO_PHYS, 28 size: CONFIG_SYS_PCI1_IO_SIZE, 29 flags: PCI_REGION_IO 30 }, 31 { 32 bus_start: CONFIG_SYS_PCI1_MMIO_BASE, 33 phys_start: CONFIG_SYS_PCI1_MMIO_PHYS, 34 size: CONFIG_SYS_PCI1_MMIO_SIZE, 35 flags: PCI_REGION_MEM 36 }, 37 }; 38 39 /* 40 * pci_init_board() 41 * 42 * NOTICE: PCI2 is not supported. There is only one 43 * physical PCI slot on the board. 44 * 45 */ 46 void 47 pci_init_board(void) 48 { 49 volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; 50 volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk; 51 volatile law83xx_t *pci_law = immr->sysconf.pcilaw; 52 struct pci_region *reg[] = { pci1_regions }; 53 54 /* Enable all 8 PCI_CLK_OUTPUTS */ 55 clk->occr = 0xff000000; 56 udelay(2000); 57 58 /* Configure PCI Local Access Windows */ 59 pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR; 60 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; 61 62 pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR; 63 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M; 64 65 udelay(2000); 66 67 mpc83xx_pci_init(1, reg); 68 } 69