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 static struct pci_region pci1_regions[] = { 20 { 21 bus_start: CONFIG_SYS_PCI1_MEM_BASE, 22 phys_start: CONFIG_SYS_PCI1_MEM_PHYS, 23 size: CONFIG_SYS_PCI1_MEM_SIZE, 24 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH 25 }, 26 { 27 bus_start: CONFIG_SYS_PCI1_IO_BASE, 28 phys_start: CONFIG_SYS_PCI1_IO_PHYS, 29 size: CONFIG_SYS_PCI1_IO_SIZE, 30 flags: PCI_REGION_IO 31 }, 32 { 33 bus_start: CONFIG_SYS_PCI1_MMIO_BASE, 34 phys_start: CONFIG_SYS_PCI1_MMIO_PHYS, 35 size: CONFIG_SYS_PCI1_MMIO_SIZE, 36 flags: PCI_REGION_MEM 37 }, 38 }; 39 40 /* 41 * pci_init_board() 42 * 43 * NOTICE: PCI2 is not supported. There is only one 44 * physical PCI slot on the board. 45 * 46 */ 47 void 48 pci_init_board(void) 49 { 50 volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR; 51 volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk; 52 volatile law83xx_t *pci_law = immr->sysconf.pcilaw; 53 struct pci_region *reg[] = { pci1_regions }; 54 55 /* Enable all 8 PCI_CLK_OUTPUTS */ 56 clk->occr = 0xff000000; 57 udelay(2000); 58 59 /* Configure PCI Local Access Windows */ 60 pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR; 61 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G; 62 63 pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR; 64 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M; 65 66 udelay(2000); 67 68 mpc83xx_pci_init(1, reg); 69 } 70