mirror of
https://github.com/brain-hackers/u-boot-brain
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d024236e5a
We have a large number of places where while we historically referenced gd in the code we no longer do, as well as cases where the code added that line "just in case" during development and never dropped it. Signed-off-by: Tom Rini <trini@konsulko.com>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
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* (C) Copyright 2005
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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* Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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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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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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/*
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* pci_init_board()
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*
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* NOTICE: MPC8349 internally has two PCI controllers (PCI1 and PCI2) but since
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* per TQM834x design physical connections to external devices (PCI sockets)
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* are routed only to the PCI1 we do not account for the second one - this code
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* supports PCI1 module only. Should support for the PCI2 be required in the
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* future it needs a separate pci_controller structure (above) and handling -
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* please refer to other boards' implementation for dual PCI host controllers,
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* for example board/Marvell/db64360/pci.c, pci_init_board()
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*
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*/
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void
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pci_init_board(void)
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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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struct pci_region *reg[] = { pci1_regions };
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u32 reg32;
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/*
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* Configure PCI controller and PCI_CLK_OUTPUT
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*
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* WARNING! only PCI_CLK_OUTPUT1 is enabled here as this is the one
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* line actually used for clocking all external PCI devices in TQM83xx.
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* Enabling other PCI_CLK_OUTPUT lines may lead to board's hang for
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* unknown reasons - particularly PCI_CLK_OUTPUT6 and PCI_CLK_OUTPUT7
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* are known to hang the board; this issue is under investigation
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* (13 oct 05)
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*/
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reg32 = OCCR_PCICOE1;
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#if 0
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/* enabling all PCI_CLK_OUTPUT lines HANGS the board... */
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reg32 = 0xff000000;
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#endif
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if (clk->spmr & SPMR_CKID) {
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/* PCI Clock is half CONFIG_83XX_CLKIN so need to set up OCCR
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* fields accordingly */
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reg32 |= (OCCR_PCI1CR | OCCR_PCI2CR);
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reg32 |= (OCCR_PCICD0 | OCCR_PCICD1 | OCCR_PCICD2 \
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| OCCR_PCICD3 | OCCR_PCICD4 | OCCR_PCICD5 \
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| OCCR_PCICD6 | OCCR_PCICD7);
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}
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clk->occr = reg32;
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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_16M;
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udelay(2000);
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mpc83xx_pci_init(1, reg);
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}
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