98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
|
// SPDX-License-Identifier: GPL-2.0+
|
||
|
|
/*
|
||
|
|
* (C) Copyright 2005
|
||
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
||
|
|
* Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <init.h>
|
||
|
|
#include <asm/mmu.h>
|
||
|
|
#include <asm/io.h>
|
||
|
|
#include <common.h>
|
||
|
|
#include <mpc83xx.h>
|
||
|
|
#include <pci.h>
|
||
|
|
#include <i2c.h>
|
||
|
|
#include <asm/fsl_i2c.h>
|
||
|
|
|
||
|
|
static struct pci_region pci1_regions[] = {
|
||
|
|
{
|
||
|
|
bus_start: CONFIG_SYS_PCI1_MEM_BASE,
|
||
|
|
phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
|
||
|
|
size: CONFIG_SYS_PCI1_MEM_SIZE,
|
||
|
|
flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
|
||
|
|
},
|
||
|
|
{
|
||
|
|
bus_start: CONFIG_SYS_PCI1_IO_BASE,
|
||
|
|
phys_start: CONFIG_SYS_PCI1_IO_PHYS,
|
||
|
|
size: CONFIG_SYS_PCI1_IO_SIZE,
|
||
|
|
flags: PCI_REGION_IO
|
||
|
|
},
|
||
|
|
{
|
||
|
|
bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
|
||
|
|
phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
|
||
|
|
size: CONFIG_SYS_PCI1_MMIO_SIZE,
|
||
|
|
flags: PCI_REGION_MEM
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* pci_init_board()
|
||
|
|
*
|
||
|
|
* NOTICE: MPC8349 internally has two PCI controllers (PCI1 and PCI2) but since
|
||
|
|
* per TQM834x design physical connections to external devices (PCI sockets)
|
||
|
|
* are routed only to the PCI1 we do not account for the second one - this code
|
||
|
|
* supports PCI1 module only. Should support for the PCI2 be required in the
|
||
|
|
* future it needs a separate pci_controller structure (above) and handling -
|
||
|
|
* please refer to other boards' implementation for dual PCI host controllers,
|
||
|
|
* for example board/Marvell/db64360/pci.c, pci_init_board()
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
pci_init_board(void)
|
||
|
|
{
|
||
|
|
volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
|
||
|
|
volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
|
||
|
|
volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
|
||
|
|
struct pci_region *reg[] = { pci1_regions };
|
||
|
|
u32 reg32;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Configure PCI controller and PCI_CLK_OUTPUT
|
||
|
|
*
|
||
|
|
* WARNING! only PCI_CLK_OUTPUT1 is enabled here as this is the one
|
||
|
|
* line actually used for clocking all external PCI devices in TQM83xx.
|
||
|
|
* Enabling other PCI_CLK_OUTPUT lines may lead to board's hang for
|
||
|
|
* unknown reasons - particularly PCI_CLK_OUTPUT6 and PCI_CLK_OUTPUT7
|
||
|
|
* are known to hang the board; this issue is under investigation
|
||
|
|
* (13 oct 05)
|
||
|
|
*/
|
||
|
|
reg32 = OCCR_PCICOE1;
|
||
|
|
#if 0
|
||
|
|
/* enabling all PCI_CLK_OUTPUT lines HANGS the board... */
|
||
|
|
reg32 = 0xff000000;
|
||
|
|
#endif
|
||
|
|
if (clk->spmr & SPMR_CKID) {
|
||
|
|
/* PCI Clock is half CONFIG_SYS_CLK_FREQ so need to set up OCCR
|
||
|
|
* fields accordingly */
|
||
|
|
reg32 |= (OCCR_PCI1CR | OCCR_PCI2CR);
|
||
|
|
|
||
|
|
reg32 |= (OCCR_PCICD0 | OCCR_PCICD1 | OCCR_PCICD2 \
|
||
|
|
| OCCR_PCICD3 | OCCR_PCICD4 | OCCR_PCICD5 \
|
||
|
|
| OCCR_PCICD6 | OCCR_PCICD7);
|
||
|
|
}
|
||
|
|
|
||
|
|
clk->occr = reg32;
|
||
|
|
udelay(2000);
|
||
|
|
|
||
|
|
/* Configure PCI Local Access Windows */
|
||
|
|
pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
|
||
|
|
pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_512M;
|
||
|
|
|
||
|
|
pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
|
||
|
|
pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_16M;
|
||
|
|
|
||
|
|
udelay(2000);
|
||
|
|
|
||
|
|
mpc83xx_pci_init(1, reg);
|
||
|
|
}
|