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/*
* Copyright 2000, 2007-2008 MontaVista Software Inc.
* Author: MontaVista Software, Inc. <source@mvista.com
*
* Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
*
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <asm/mipsregs.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <au1000.h>
extern void __init board_setup(void);
extern void au1000_restart(char *);
extern void au1000_halt(void);
extern void au1000_power_off(void);
extern void set_cpuspec(void);
void __init plat_mem_setup(void)
{
struct cpu_spec *sp;
unsigned long prid, cpufreq, bclk;
set_cpuspec();
sp = cur_cpu_spec[0];
_machine_restart = au1000_restart;
_machine_halt = au1000_halt;
pm_power_off = au1000_power_off;
board_setup(); /* board specific setup */
prid = read_c0_prid();
if (sp->cpu_pll_wo)
#ifdef CONFIG_SOC_AU1000_FREQUENCY
cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
#else
cpufreq = 396;
#endif
else
cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
if (sp->cpu_bclk) {
/* Enable BCLK switching */
bclk = au_readl(SYS_POWERCTRL);
au_writel(bclk | 0x60, SYS_POWERCTRL);
printk(KERN_INFO "BCLK switching enabled!\n");
}
if (sp->cpu_od)
/* Various early Au1xx0 errata corrected by this */
set_c0_config(1 << 19); /* Set Config[OD] */
else
/* Clear to obtain best system bus performance */
clear_c0_config(1 << 19); /* Clear Config[OD] */
/* IO/MEM resources. */
set_io_port_base(0);
ioport_resource.start = IOPORT_RESOURCE_START;
ioport_resource.end = IOPORT_RESOURCE_END;
iomem_resource.start = IOMEM_RESOURCE_START;
iomem_resource.end = IOMEM_RESOURCE_END;
while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
au_sync();
while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
au_writel(0, SYS_TOYTRIM);
}
#if defined(CONFIG_64BIT_PHYS_ADDR)
/* This routine should be valid for all Au1x based boards */
phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
{
/* Don't fixup 36-bit addresses */
if ((phys_addr >> 32) != 0)
return phys_addr;
#ifdef CONFIG_PCI
{
u32 start = (u32)Au1500_PCI_MEM_START;
u32 end = (u32)Au1500_PCI_MEM_END;
/* Check for PCI memory window */
if (phys_addr >= start && (phys_addr + size - 1) <= end)
return (phys_t)
((phys_addr - start) + Au1500_PCI_MEM_START);
}
#endif
/*
* All Au1xx0 SOCs have a PCMCIA controller.
* We setup our 32-bit pseudo addresses to be equal to the
* 36-bit addr >> 4, to make it easier to check the address
* and fix it.
* The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
* The pseudo address we use is 0xF400 0000. Any address over
* 0xF400 0000 is a PCMCIA pseudo address.
*/
if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
return (phys_t)(phys_addr << 4);
/* default nop */
return phys_addr;
}
EXPORT_SYMBOL(__fixup_bigphys_addr);
#endif
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