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linux-next/arch/m68k/platform/54xx/config.c
Greg Ungerer 66d857b08b m68k: merge m68k and m68knommu arch directories
There is a lot of common code that could be shared between the m68k
and m68knommu arch branches. It makes sense to merge the two branches
into a single directory structure so that we can more easily share
that common code.

This is a brute force merge, based on a script from Stephen King
<sfking@fdwdc.com>, which was originally written by Arnd Bergmann
<arnd@arndb.de>.

> The script was inspired by the script Sam Ravnborg used to merge the
> includes from m68knommu. For those files common to both arches but
> differing in content, the m68k version of the file is renamed to
> <file>_mm.<ext> and the m68knommu version of the file is moved into the
> corresponding m68k directory and renamed <file>_no.<ext> and a small
> wrapper file <file>.<ext> is used to select between the two version. Files
> that are common to both but don't differ are removed from the m68knommu
> tree and files and directories that are unique to the m68knommu tree are
> moved to the m68k tree. Finally, the arch/m68knommu tree is removed.
>
> To select between the the versions of the files, the wrapper uses
>
> #ifdef CONFIG_MMU
> #include <file>_mm.<ext>
> #else
> #include <file>_no.<ext>
> #endif

On top of this file merge I have done a simplistic merge of m68k and
m68knommu Kconfig, which primarily attempts to keep existing options and
menus in place. Other than a handful of options being moved it produces
identical .config outputs on m68k and m68knommu targets I tested it on.

With this in place there is now quite a bit of scope for merge cleanups
in future patches.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
2011-03-25 14:05:13 +10:00

116 lines
2.7 KiB
C

/***************************************************************************/
/*
* linux/arch/m68knommu/platform/54xx/config.c
*
* Copyright (C) 2010, Philippe De Muyter <phdm@macqel.be>
*/
/***************************************************************************/
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/m54xxsim.h>
#include <asm/mcfuart.h>
#include <asm/m54xxgpt.h>
/***************************************************************************/
static struct mcf_platform_uart m54xx_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = 64 + 35,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = 64 + 34,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE3,
.irq = 64 + 33,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE4,
.irq = 64 + 32,
},
};
static struct platform_device m54xx_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m54xx_uart_platform,
};
static struct platform_device *m54xx_devices[] __initdata = {
&m54xx_uart,
};
/***************************************************************************/
static void __init m54xx_uart_init_line(int line, int irq)
{
int rts_cts;
/* enable io pins */
switch (line) {
case 0:
rts_cts = 0; break;
case 1:
rts_cts = MCF_PAR_PSC_RTS_RTS; break;
case 2:
rts_cts = MCF_PAR_PSC_RTS_RTS | MCF_PAR_PSC_CTS_CTS; break;
case 3:
rts_cts = 0; break;
}
__raw_writeb(MCF_PAR_PSC_TXD | rts_cts | MCF_PAR_PSC_RXD,
MCF_MBAR + MCF_PAR_PSC(line));
}
static void __init m54xx_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m54xx_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m54xx_uart_init_line(line, m54xx_uart_platform[line].irq);
}
/***************************************************************************/
static void mcf54xx_reset(void)
{
/* disable interrupts and enable the watchdog */
asm("movew #0x2700, %sr\n");
__raw_writel(0, MCF_MBAR + MCF_GPT_GMS0);
__raw_writel(MCF_GPT_GCIR_CNT(1), MCF_MBAR + MCF_GPT_GCIR0);
__raw_writel(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE | MCF_GPT_GMS_TMS(4),
MCF_MBAR + MCF_GPT_GMS0);
}
/***************************************************************************/
void __init config_BSP(char *commandp, int size)
{
mach_reset = mcf54xx_reset;
m54xx_uarts_init();
}
/***************************************************************************/
static int __init init_BSP(void)
{
platform_add_devices(m54xx_devices, ARRAY_SIZE(m54xx_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/