1 /* 2 * pci.c -- WindRiver SBC8349 PCI board support. 3 * Copyright (c) 2006 Wind River Systems, Inc. 4 * Copyright (C) 2006-2009 Freescale Semiconductor, Inc. 5 * 6 * Based on MPC8349 PCI support but w/o PIB related code. 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 11 #include <asm/mmu.h> 12 #include <asm/io.h> 13 #include <common.h> 14 #include <mpc83xx.h> 15 #include <pci.h> 16 #include <i2c.h> 17 #include <asm/fsl_i2c.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 static struct pci_region pci1_regions[] = { 22 { 23 bus_start: CONFIG_SYS_PCI1_MEM_BASE, 24 phys_start: CONFIG_SYS_PCI1_MEM_PHYS, 25 size: CONFIG_SYS_PCI1_MEM_SIZE, 26 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH 27 }, 28 { 29 bus_start: CONFIG_SYS_PCI1_IO_BASE, 30 phys_start: CONFIG_SYS_PCI1_IO_PHYS, 31 size: CONFIG_SYS_PCI1_IO_SIZE, 32 flags: PCI_REGION_IO 33 }, 34 { 35 bus_start: CONFIG_SYS_PCI1_MMIO_BASE, 36 phys_start: CONFIG_SYS_PCI1_MMIO_PHYS, 37 size: CONFIG_SYS_PCI1_MMIO_SIZE, 38 flags: PCI_REGION_MEM 39 }, 40 }; 41 42 /* 43 * pci_init_board() 44 * 45 * NOTICE: PCI2 is not supported. There is only one 46 * physical PCI slot on the board. 47 * 48 */ 49 void 50 pci_init_board(void) 51 { 52 volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; 53 volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk; 54 volatile law83xx_t *pci_law = immr->sysconf.pcilaw; 55 struct pci_region *reg[] = { pci1_regions }; 56 57 /* Enable all 8 PCI_CLK_OUTPUTS */ 58 clk->occr = 0xff000000; 59 udelay(2000); 60 61 /* Configure PCI Local Access Windows */ 62 pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR; 63 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; 64 65 pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR; 66 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M; 67 68 udelay(2000); 69 70 mpc83xx_pci_init(1, reg); 71 } 72