122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
/*
|
|
* Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
|
|
#include <asm/mmu.h>
|
|
#include <asm/io.h>
|
|
#include <mpc83xx.h>
|
|
#include <pci.h>
|
|
#include <i2c.h>
|
|
#include <asm/fsl_i2c.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
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
|
|
},
|
|
};
|
|
|
|
#ifdef CONFIG_MPC83XX_PCI2
|
|
static struct pci_region pci2_regions[] = {
|
|
{
|
|
bus_start: CONFIG_SYS_PCI2_MEM_BASE,
|
|
phys_start: CONFIG_SYS_PCI2_MEM_PHYS,
|
|
size: CONFIG_SYS_PCI2_MEM_SIZE,
|
|
flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
|
|
},
|
|
{
|
|
bus_start: CONFIG_SYS_PCI2_IO_BASE,
|
|
phys_start: CONFIG_SYS_PCI2_IO_PHYS,
|
|
size: CONFIG_SYS_PCI2_IO_SIZE,
|
|
flags: PCI_REGION_IO
|
|
},
|
|
{
|
|
bus_start: CONFIG_SYS_PCI2_MMIO_BASE,
|
|
phys_start: CONFIG_SYS_PCI2_MMIO_PHYS,
|
|
size: CONFIG_SYS_PCI2_MMIO_SIZE,
|
|
flags: PCI_REGION_MEM
|
|
},
|
|
};
|
|
#endif
|
|
|
|
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;
|
|
#ifndef CONFIG_MPC83XX_PCI2
|
|
struct pci_region *reg[] = { pci1_regions };
|
|
#else
|
|
struct pci_region *reg[] = { pci1_regions, pci2_regions };
|
|
#endif
|
|
u8 reg8;
|
|
|
|
#ifdef CONFIG_HARD_I2C
|
|
i2c_set_bus_num(1);
|
|
/* Read the PCI_M66EN jumper setting */
|
|
if ((i2c_read(CONFIG_SYS_I2C_8574_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0) ||
|
|
(i2c_read(CONFIG_SYS_I2C_8574A_ADDR2, 0, 0, ®8, sizeof(reg8)) == 0)) {
|
|
if (reg8 & I2C_8574_PCI66)
|
|
clk->occr = 0xff000000; /* 66 MHz PCI */
|
|
else
|
|
clk->occr = 0xff600001; /* 33 MHz PCI */
|
|
} else {
|
|
clk->occr = 0xff600001; /* 33 MHz PCI */
|
|
}
|
|
#else
|
|
clk->occr = 0xff000000; /* 66 MHz PCI */
|
|
#endif
|
|
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_1G;
|
|
|
|
pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
|
|
pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
|
|
|
|
udelay(2000);
|
|
|
|
#ifndef CONFIG_MPC83XX_PCI2
|
|
mpc83xx_pci_init(1, reg);
|
|
#else
|
|
mpc83xx_pci_init(2, reg);
|
|
#endif
|
|
}
|