mirror of
https://github.com/AsahiLinux/u-boot
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153 lines
3.9 KiB
C
153 lines
3.9 KiB
C
/*
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* Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*/
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/*
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* PCI Configuration space access support for MPC83xx PCI Bridge
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*/
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#include <asm/mmu.h>
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#include <asm/io.h>
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#include <common.h>
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#include <mpc83xx.h>
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#include <pci.h>
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#include <i2c.h>
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#include <asm/fsl_i2c.h>
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#include "../common/pq-mds-pib.h"
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DECLARE_GLOBAL_DATA_PTR;
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static struct pci_region pci1_regions[] = {
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{
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bus_start: CONFIG_SYS_PCI1_MEM_BASE,
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phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
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size: CONFIG_SYS_PCI1_MEM_SIZE,
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flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
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},
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{
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bus_start: CONFIG_SYS_PCI1_IO_BASE,
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phys_start: CONFIG_SYS_PCI1_IO_PHYS,
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size: CONFIG_SYS_PCI1_IO_SIZE,
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flags: PCI_REGION_IO
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},
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{
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bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
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phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
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size: CONFIG_SYS_PCI1_MMIO_SIZE,
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flags: PCI_REGION_MEM
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},
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};
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#ifdef CONFIG_MPC83XX_PCI2
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static struct pci_region pci2_regions[] = {
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{
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bus_start: CONFIG_SYS_PCI2_MEM_BASE,
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phys_start: CONFIG_SYS_PCI2_MEM_PHYS,
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size: CONFIG_SYS_PCI2_MEM_SIZE,
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flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
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},
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{
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bus_start: CONFIG_SYS_PCI2_IO_BASE,
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phys_start: CONFIG_SYS_PCI2_IO_PHYS,
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size: CONFIG_SYS_PCI2_IO_SIZE,
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flags: PCI_REGION_IO
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},
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{
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bus_start: CONFIG_SYS_PCI2_MMIO_BASE,
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phys_start: CONFIG_SYS_PCI2_MMIO_PHYS,
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size: CONFIG_SYS_PCI2_MMIO_SIZE,
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flags: PCI_REGION_MEM
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},
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};
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#endif
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void pci_init_board(void)
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#ifdef CONFIG_PCISLAVE
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{
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volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
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volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[0];
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struct pci_region *reg[] = { pci1_regions };
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/* Configure PCI Local Access Windows */
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pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
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pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M;
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pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
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pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_1M;
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mpc83xx_pci_init(1, reg, 0);
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/*
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* Configure PCI Inbound Translation Windows
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*/
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pci_ctrl[0].pitar0 = 0x0;
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pci_ctrl[0].pibar0 = 0x0;
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pci_ctrl[0].piwar0 = PIWAR_EN | PIWAR_RTT_SNOOP |
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PIWAR_WTT_SNOOP | PIWAR_IWS_4K;
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pci_ctrl[0].pitar1 = 0x0;
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pci_ctrl[0].pibar1 = 0x0;
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pci_ctrl[0].piebar1 = 0x0;
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pci_ctrl[0].piwar1 &= ~PIWAR_EN;
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pci_ctrl[0].pitar2 = 0x0;
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pci_ctrl[0].pibar2 = 0x0;
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pci_ctrl[0].piebar2 = 0x0;
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pci_ctrl[0].piwar2 &= ~PIWAR_EN;
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/* Unlock the configuration bit */
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mpc83xx_pcislave_unlock(0);
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printf("PCI: Agent mode enabled\n");
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}
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#else
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{
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volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
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volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
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volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
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#ifndef CONFIG_MPC83XX_PCI2
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struct pci_region *reg[] = { pci1_regions };
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#else
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struct pci_region *reg[] = { pci1_regions, pci2_regions };
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#endif
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/* initialize the PCA9555PW IO expander on the PIB board */
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pib_init();
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#if defined(PCI_66M)
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clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2;
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printf("PCI clock is 66MHz\n");
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#elif defined(PCI_33M)
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clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2 |
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OCCR_PCICD0 | OCCR_PCICD1 | OCCR_PCICD2 | OCCR_PCICR;
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printf("PCI clock is 33MHz\n");
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#else
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clk->occr = OCCR_PCICOE0 | OCCR_PCICOE1 | OCCR_PCICOE2;
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printf("PCI clock is 66MHz\n");
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#endif
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udelay(2000);
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/* Configure PCI Local Access Windows */
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pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
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pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M;
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pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
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pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_1M;
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udelay(2000);
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#ifndef CONFIG_MPC83XX_PCI2
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mpc83xx_pci_init(1, reg, 0);
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#else
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mpc83xx_pci_init(2, reg, 0);
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#endif
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}
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#endif /* CONFIG_PCISLAVE */
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