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![Stefan Roese](/assets/img/avatar_default.png)
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
467 lines
13 KiB
C
467 lines
13 KiB
C
/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* Copyright (c) 2005 MontaVista Software, Inc.
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* Vitaly Bordug <vbordug@ru.mvista.com>
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* Added support for PCI bridge on MPC8272ADS
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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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#ifdef CONFIG_PCI
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#include <pci.h>
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#include <mpc8260.h>
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#include <asm/m8260_pci.h>
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#include <asm/io.h>
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#ifdef CONFIG_OF_LIBFDT
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#include <libfdt.h>
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#include <fdt_support.h>
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#endif
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#if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 || defined CONFIG_PM826
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DECLARE_GLOBAL_DATA_PTR;
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#endif
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/*
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* Local->PCI map (from CPU) controlled by
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* MPC826x master window
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*
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* 0x80000000 - 0xBFFFFFFF CPU2PCI space PCIBR0
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* 0xF4000000 - 0xF7FFFFFF CPU2PCI space PCIBR1
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*
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* 0x80000000 - 0x9FFFFFFF 0x80000000 - 0x9FFFFFFF (Outbound ATU #1)
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* PCI Mem with prefetch
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*
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* 0xA0000000 - 0xBFFFFFFF 0xA0000000 - 0xBFFFFFFF (Outbound ATU #2)
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* PCI Mem w/o prefetch
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*
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* 0xF4000000 - 0xF7FFFFFF 0x00000000 - 0x03FFFFFF (Outbound ATU #3)
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* 32-bit PCI IO
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*
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* PCI->Local map (from PCI)
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* MPC826x slave window controlled by
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*
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* 0x00000000 - 0x1FFFFFFF 0x00000000 - 0x1FFFFFFF (Inbound ATU #1)
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* MPC826x local memory
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*/
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/*
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* Slave window that allows PCI masters to access MPC826x local memory.
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* This window is set up using the first set of Inbound ATU registers
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*/
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#ifndef CONFIG_SYS_PCI_SLV_MEM_LOCAL
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#define PCI_SLV_MEM_LOCAL CONFIG_SYS_SDRAM_BASE /* Local base */
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#else
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#define PCI_SLV_MEM_LOCAL CONFIG_SYS_PCI_SLV_MEM_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCI_SLV_MEM_BUS
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#define PCI_SLV_MEM_BUS 0x00000000 /* PCI base */
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#else
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#define PCI_SLV_MEM_BUS CONFIG_SYS_PCI_SLV_MEM_BUS
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#endif
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#ifndef CONFIG_SYS_PICMR0_MASK_ATTRIB
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#define PICMR0_MASK_ATTRIB (PICMR_MASK_512MB | PICMR_ENABLE | \
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PICMR_PREFETCH_EN)
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#else
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#define PICMR0_MASK_ATTRIB CONFIG_SYS_PICMR0_MASK_ATTRIB
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#endif
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/*
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* These are the windows that allow the CPU to access PCI address space.
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* All three PCI master windows, which allow the CPU to access PCI
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* prefetch, non prefetch, and IO space (see below), must all fit within
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* these windows.
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*/
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/* PCIBR0 */
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#ifndef CONFIG_SYS_PCI_MSTR0_LOCAL
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#define PCI_MSTR0_LOCAL 0x80000000 /* Local base */
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#else
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#define PCI_MSTR0_LOCAL CONFIG_SYS_PCI_MSTR0_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCIMSK0_MASK
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#define PCIMSK0_MASK PCIMSK_1GB /* Size of window */
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#else
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#define PCIMSK0_MASK CONFIG_SYS_PCIMSK0_MASK
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#endif
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/* PCIBR1 */
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#ifndef CONFIG_SYS_PCI_MSTR1_LOCAL
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#define PCI_MSTR1_LOCAL 0xF4000000 /* Local base */
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#else
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#define PCI_MSTR1_LOCAL CONFIG_SYS_PCI_MSTR1_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCIMSK1_MASK
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#define PCIMSK1_MASK PCIMSK_64MB /* Size of window */
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#else
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#define PCIMSK1_MASK CONFIG_SYS_PCIMSK1_MASK
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#endif
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/*
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* Master window that allows the CPU to access PCI Memory (prefetch).
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* This window will be setup with the first set of Outbound ATU registers
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* in the bridge.
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*/
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#ifndef CONFIG_SYS_PCI_MSTR_MEM_LOCAL
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#define PCI_MSTR_MEM_LOCAL 0x80000000 /* Local base */
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#else
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#define PCI_MSTR_MEM_LOCAL CONFIG_SYS_PCI_MSTR_MEM_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_MEM_BUS
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#define PCI_MSTR_MEM_BUS 0x80000000 /* PCI base */
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#else
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#define PCI_MSTR_MEM_BUS CONFIG_SYS_PCI_MSTR_MEM_BUS
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#endif
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#ifndef CONFIG_SYS_CPU_PCI_MEM_START
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#define CPU_PCI_MEM_START PCI_MSTR_MEM_LOCAL
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#else
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#define CPU_PCI_MEM_START CONFIG_SYS_CPU_PCI_MEM_START
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_MEM_SIZE
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#define PCI_MSTR_MEM_SIZE 0x10000000 /* 256MB */
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#else
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#define PCI_MSTR_MEM_SIZE CONFIG_SYS_PCI_MSTR_MEM_SIZE
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#endif
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#ifndef CONFIG_SYS_POCMR0_MASK_ATTRIB
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#define POCMR0_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PREFETCH_EN)
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#else
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#define POCMR0_MASK_ATTRIB CONFIG_SYS_POCMR0_MASK_ATTRIB
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#endif
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/*
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* Master window that allows the CPU to access PCI Memory (non-prefetch).
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* This window will be setup with the second set of Outbound ATU registers
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* in the bridge.
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*/
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#ifndef CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL
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#define PCI_MSTR_MEMIO_LOCAL 0x90000000 /* Local base */
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#else
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#define PCI_MSTR_MEMIO_LOCAL CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_MEMIO_BUS
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#define PCI_MSTR_MEMIO_BUS 0x90000000 /* PCI base */
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#else
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#define PCI_MSTR_MEMIO_BUS CONFIG_SYS_PCI_MSTR_MEMIO_BUS
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#endif
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#ifndef CONFIG_SYS_CPU_PCI_MEMIO_START
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#define CPU_PCI_MEMIO_START PCI_MSTR_MEMIO_LOCAL
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#else
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#define CPU_PCI_MEMIO_START CONFIG_SYS_CPU_PCI_MEMIO_START
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_MEMIO_SIZE
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#define PCI_MSTR_MEMIO_SIZE 0x10000000 /* 256 MB */
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#else
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#define PCI_MSTR_MEMIO_SIZE CONFIG_SYS_PCI_MSTR_MEMIO_SIZE
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#endif
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#ifndef CONFIG_SYS_POCMR1_MASK_ATTRIB
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#define POCMR1_MASK_ATTRIB (POCMR_MASK_512MB | POCMR_ENABLE)
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#else
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#define POCMR1_MASK_ATTRIB CONFIG_SYS_POCMR1_MASK_ATTRIB
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#endif
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/*
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* Master window that allows the CPU to access PCI IO space.
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* This window will be setup with the third set of Outbound ATU registers
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* in the bridge.
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*/
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#ifndef CONFIG_SYS_PCI_MSTR_IO_LOCAL
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#define PCI_MSTR_IO_LOCAL 0xA0000000 /* Local base */
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#else
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#define PCI_MSTR_IO_LOCAL CONFIG_SYS_PCI_MSTR_IO_LOCAL
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_IO_BUS
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#define PCI_MSTR_IO_BUS 0xA0000000 /* PCI base */
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#else
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#define PCI_MSTR_IO_BUS CONFIG_SYS_PCI_MSTR_IO_BUS
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#endif
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#ifndef CONFIG_SYS_CPU_PCI_IO_START
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#define CPU_PCI_IO_START PCI_MSTR_IO_LOCAL
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#else
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#define CPU_PCI_IO_START CONFIG_SYS_CPU_PCI_IO_START
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#endif
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#ifndef CONFIG_SYS_PCI_MSTR_IO_SIZE
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#define PCI_MSTR_IO_SIZE 0x10000000 /* 256MB */
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#else
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#define PCI_MSTR_IO_SIZE CONFIG_SYS_PCI_MSTR_IO_SIZE
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#endif
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#ifndef CONFIG_SYS_POCMR2_MASK_ATTRIB
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#define POCMR2_MASK_ATTRIB (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO)
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#else
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#define POCMR2_MASK_ATTRIB CONFIG_SYS_POCMR2_MASK_ATTRIB
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#endif
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/* PCI bus configuration registers.
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*/
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#define PCI_CLASS_BRIDGE_CTLR 0x06
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static inline void pci_outl (u32 addr, u32 data)
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{
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*(volatile u32 *) addr = cpu_to_le32 (data);
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}
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void pci_mpc8250_init (struct pci_controller *hose)
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{
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u16 tempShort;
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volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
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pci_dev_t host_devno = PCI_BDF (0, 0, 0);
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pci_setup_indirect (hose, CONFIG_SYS_IMMR + PCI_CFG_ADDR_REG,
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CONFIG_SYS_IMMR + PCI_CFG_DATA_REG);
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/*
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* Setting required to enable local bus for PCI (SIUMCR [LBPC]).
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*/
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#ifdef CONFIG_MPC8266ADS
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immap->im_siu_conf.sc_siumcr =
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(immap->im_siu_conf.sc_siumcr & ~SIUMCR_LBPC11)
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| SIUMCR_LBPC01;
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#elif defined(CONFIG_ADSTYPE) && CONFIG_ADSTYPE == CONFIG_SYS_PQ2FADS
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/* nothing to do for this board here */
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#elif defined CONFIG_MPC8272
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immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
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~SIUMCR_BBD &
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~SIUMCR_ESE &
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~SIUMCR_PBSE &
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~SIUMCR_CDIS &
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~SIUMCR_DPPC11 &
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~SIUMCR_L2CPC11 &
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~SIUMCR_LBPC11 &
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~SIUMCR_APPC11 &
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~SIUMCR_CS10PC11 &
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~SIUMCR_BCTLC11 &
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~SIUMCR_MMR11)
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| SIUMCR_DPPC11
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| SIUMCR_L2CPC01
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| SIUMCR_LBPC00
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| SIUMCR_APPC10
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| SIUMCR_CS10PC00
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| SIUMCR_BCTLC00
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| SIUMCR_MMR11;
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#elif defined(CONFIG_TQM8272)
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/* nothing to do for this Board here */
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#else
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/*
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* Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]),
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* and local bus for PCI (SIUMCR [LBPC]).
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*/
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immap->im_siu_conf.sc_siumcr = (immap->im_siu_conf.sc_siumcr &
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~SIUMCR_LBPC11 &
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~SIUMCR_CS10PC11 &
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~SIUMCR_LBPC11) |
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SIUMCR_LBPC01 |
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SIUMCR_CS10PC01 |
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SIUMCR_APPC10;
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#endif
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/* Make PCI lowest priority */
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/* Each 4 bits is a device bus request and the MS 4bits
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is highest priority */
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/* Bus 4bit value
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--- ----------
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CPM high 0b0000
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CPM middle 0b0001
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CPM low 0b0010
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PCI reguest 0b0011
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Reserved 0b0100
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Reserved 0b0101
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Internal Core 0b0110
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External Master 1 0b0111
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External Master 2 0b1000
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External Master 3 0b1001
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The rest are reserved */
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immap->im_siu_conf.sc_ppc_alrh = 0x61207893;
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/* Park bus on core while modifying PCI Bus accesses */
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immap->im_siu_conf.sc_ppc_acr = 0x6;
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/*
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* Set up master windows that allow the CPU to access PCI space. These
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* windows are set up using the two SIU PCIBR registers.
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*/
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immap->im_memctl.memc_pcimsk0 = PCIMSK0_MASK;
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immap->im_memctl.memc_pcibr0 = PCI_MSTR0_LOCAL | PCIBR_ENABLE;
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#if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272
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immap->im_memctl.memc_pcimsk1 = PCIMSK1_MASK;
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immap->im_memctl.memc_pcibr1 = PCI_MSTR1_LOCAL | PCIBR_ENABLE;
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#endif
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/* Release PCI RST (by default the PCI RST signal is held low) */
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immap->im_pci.pci_gcr = cpu_to_le32 (PCIGCR_PCI_BUS_EN);
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/* give it some time */
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{
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#if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272
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/* Give the PCI cards more time to initialize before query
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This might be good for other boards also
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*/
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int i;
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for (i = 0; i < 1000; ++i)
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#endif
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udelay (1000);
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}
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/*
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* Set up master window that allows the CPU to access PCI Memory (prefetch)
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* space. This window is set up using the first set of Outbound ATU registers.
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*/
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immap->im_pci.pci_potar0 = cpu_to_le32 (PCI_MSTR_MEM_BUS >> 12); /* PCI base */
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immap->im_pci.pci_pobar0 = cpu_to_le32 (PCI_MSTR_MEM_LOCAL >> 12); /* Local base */
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immap->im_pci.pci_pocmr0 = cpu_to_le32 (POCMR0_MASK_ATTRIB); /* Size & attribute */
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/*
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* Set up master window that allows the CPU to access PCI Memory (non-prefetch)
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* space. This window is set up using the second set of Outbound ATU registers.
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*/
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immap->im_pci.pci_potar1 = cpu_to_le32 (PCI_MSTR_MEMIO_BUS >> 12); /* PCI base */
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immap->im_pci.pci_pobar1 = cpu_to_le32 (PCI_MSTR_MEMIO_LOCAL >> 12); /* Local base */
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immap->im_pci.pci_pocmr1 = cpu_to_le32 (POCMR1_MASK_ATTRIB); /* Size & attribute */
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/*
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* Set up master window that allows the CPU to access PCI IO space. This window
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* is set up using the third set of Outbound ATU registers.
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*/
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immap->im_pci.pci_potar2 = cpu_to_le32 (PCI_MSTR_IO_BUS >> 12); /* PCI base */
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immap->im_pci.pci_pobar2 = cpu_to_le32 (PCI_MSTR_IO_LOCAL >> 12); /* Local base */
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immap->im_pci.pci_pocmr2 = cpu_to_le32 (POCMR2_MASK_ATTRIB); /* Size & attribute */
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/*
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* Set up slave window that allows PCI masters to access MPC826x local memory.
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* This window is set up using the first set of Inbound ATU registers
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*/
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immap->im_pci.pci_pitar0 = cpu_to_le32 (PCI_SLV_MEM_LOCAL >> 12); /* PCI base */
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immap->im_pci.pci_pibar0 = cpu_to_le32 (PCI_SLV_MEM_BUS >> 12); /* Local base */
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immap->im_pci.pci_picmr0 = cpu_to_le32 (PICMR0_MASK_ATTRIB); /* Size & attribute */
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/* See above for description - puts PCI request as highest priority */
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#ifdef CONFIG_MPC8272
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immap->im_siu_conf.sc_ppc_alrh = 0x01236745;
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#else
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immap->im_siu_conf.sc_ppc_alrh = 0x03124567;
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#endif
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/* Park the bus on the PCI */
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immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
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/* Host mode - specify the bridge as a host-PCI bridge */
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pci_hose_write_config_byte (hose, host_devno, PCI_CLASS_CODE,
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PCI_CLASS_BRIDGE_CTLR);
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/* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
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pci_hose_read_config_word (hose, host_devno, PCI_COMMAND, &tempShort);
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pci_hose_write_config_word (hose, host_devno, PCI_COMMAND,
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tempShort | PCI_COMMAND_MASTER |
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PCI_COMMAND_MEMORY);
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/* do some bridge init, should be done on all 8260 based bridges */
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pci_hose_write_config_byte (hose, host_devno, PCI_CACHE_LINE_SIZE,
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0x08);
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pci_hose_write_config_byte (hose, host_devno, PCI_LATENCY_TIMER,
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0xF8);
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hose->first_busno = 0;
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hose->last_busno = 0xff;
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/* System memory space */
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#if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272 || defined CONFIG_PM826
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pci_set_region (hose->regions + 0,
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PCI_SLV_MEM_BUS,
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PCI_SLV_MEM_LOCAL,
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gd->ram_size, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
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#else
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pci_set_region (hose->regions + 0,
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CONFIG_SYS_SDRAM_BASE,
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CONFIG_SYS_SDRAM_BASE,
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0x4000000, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
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#endif
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/* PCI memory space */
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#if defined CONFIG_MPC8266ADS || defined CONFIG_MPC8272
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pci_set_region (hose->regions + 1,
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PCI_MSTR_MEMIO_BUS,
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PCI_MSTR_MEMIO_LOCAL,
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PCI_MSTR_MEMIO_SIZE, PCI_REGION_MEM);
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#else
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pci_set_region (hose->regions + 1,
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PCI_MSTR_MEM_BUS,
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PCI_MSTR_MEM_LOCAL,
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PCI_MSTR_MEM_SIZE, PCI_REGION_MEM);
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#endif
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/* PCI I/O space */
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pci_set_region (hose->regions + 2,
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PCI_MSTR_IO_BUS,
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PCI_MSTR_IO_LOCAL, PCI_MSTR_IO_SIZE, PCI_REGION_IO);
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hose->region_count = 3;
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pci_register_hose (hose);
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/* Mask off master abort machine checks */
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immap->im_pci.pci_emr &= cpu_to_le32 (~PCI_ERROR_PCI_NO_RSP);
|
|
eieio ();
|
|
|
|
hose->last_busno = pci_hose_scan (hose);
|
|
|
|
|
|
/* clear the error in the error status register */
|
|
immap->im_pci.pci_esr = cpu_to_le32 (PCI_ERROR_PCI_NO_RSP);
|
|
|
|
/* unmask master abort machine checks */
|
|
immap->im_pci.pci_emr |= cpu_to_le32 (PCI_ERROR_PCI_NO_RSP);
|
|
}
|
|
|
|
#if defined(CONFIG_OF_LIBFDT)
|
|
void ft_pci_setup(void *blob, bd_t *bd)
|
|
{
|
|
do_fixup_by_prop_u32(blob, "device_type", "pci", 4,
|
|
"clock-frequency", gd->pci_clk, 1);
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_PCI */
|