satip-axe/kernel/arch/sh/boards/mach-mb374/mach.c
2015-03-26 17:24:57 +01:00

54 lines
1.6 KiB
C

/*
* linux/arch/sh/boards/mb374/mach.c
*
* Copyright (C) 2000 Stuart Menefy (stuart.menefy@st.com)
*
* May be copied or modified under the terms of the GNU General Public
* License. See linux/COPYING for more information.
*
* Machine vector for the STMicroelectronics STB40RA Starter board.
*/
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <asm/io.h>
#include <mach/epld.h>
#include "../../../drivers/pci/pci-st40.h"
static void __iomem *mb374_ioport_map(unsigned long port, unsigned int size)
{
#ifdef CONFIG_PCI
/* This is something of a hack, to avoid problems with the IDE
* driver trying to access non-existant memory. So we only
* return valid addresses for PCI, and redirect everything else
* to somewhere safe.
*/
if ((port >= PCIBIOS_MIN_IO) &&
(port < ((64 * 1024) - PCIBIOS_MIN_IO + 1))) {
return port + ST40PCI_IO_ADDRESS;
}
#endif
/* However picking somewhere safe isn't as easy as you might think.
* I used to use external ROM, but that can cause problems if you are
* in the middle of updating Flash. So I'm now using the processor core
* version register, which is guaranted to be available, and non-writable.
*/
return (void __iomem *)CCN_PVR;
}
void __init mb374_setup(char **cmdline_p);
static struct sh_machine_vector mv_mb374 __initmv = {
.mv_name = "ST40RA/ST40STB1 Starter",
.mv_setup = mb374_setup,
.mv_nr_irqs = NR_IRQS,
.mv_ioport_map = mb374_ioport_map,
#ifdef CONFIG_PCI
.mv_init_irq = harp_init_irq,
#endif
};