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m68knommu: platform setup for 5249 ColdFire parts

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Switch to platform style configuration for 5249 ColdFire parts.
Initial support is for the UARTs. DMA support moved to common code
for all ColdFire parts.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Greg Ungerer 2008-02-01 17:34:30 +10:00 committed by Linus Torvalds
parent 84e6defae6
commit 5f84bd52f0
1 changed files with 57 additions and 12 deletions
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69
arch/m68knommu/platform/5249/config.c
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@ -12,11 +12,11 @@
#include <linux/param.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/dma.h>
#include <linux/io.h>
#include <asm/machdep.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfdma.h>
#include <asm/mcfuart.h>
/***************************************************************************/
@ -24,17 +24,51 @@ void coldfire_reset(void);
/***************************************************************************/
/*
* DMA channel base address table.
*/
unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
MCF_MBAR + MCFDMA_BASE0,
MCF_MBAR + MCFDMA_BASE1,
MCF_MBAR + MCFDMA_BASE2,
MCF_MBAR + MCFDMA_BASE3,
static struct mcf_platform_uart m5249_uart_platform[] = {
{
.mapbase = MCF_MBAR + MCFUART_BASE1,
.irq = 73,
},
{
.mapbase = MCF_MBAR + MCFUART_BASE2,
.irq = 74,
}
};
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
static struct platform_device m5249_uart = {
.name = "mcfuart",
.id = 0,
.dev.platform_data = m5249_uart_platform,
};
static struct platform_device *m5249_devices[] __initdata = {
&m5249_uart,
};
/***************************************************************************/
static void __init m5249_uart_init_line(int line, int irq)
{
if (line == 0) {
writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI1, MCF_MBAR + MCFSIM_UART1ICR);
writeb(irq, MCFUART_BASE1 + MCFUART_UIVR);
mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
} else if (line == 1) {
writel(MCFSIM_ICR_LEVEL6 | MCFSIM_ICR_PRI2, MCF_MBAR + MCFSIM_UART2ICR);
writeb(irq, MCFUART_BASE2 + MCFUART_UIVR);
mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
}
}
static void __init m5249_uarts_init(void)
{
const int nrlines = ARRAY_SIZE(m5249_uart_platform);
int line;
for (line = 0; (line < nrlines); line++)
m5249_uart_init_line(line, m5249_uart_platform[line].irq);
}
/***************************************************************************/
@ -85,10 +119,21 @@ int mcf_timerirqpending(int timer)
/***************************************************************************/
void config_BSP(char *commandp, int size)
void __init config_BSP(char *commandp, int size)
{
mcf_setimr(MCFSIM_IMR_MASKALL);
mach_reset = coldfire_reset;
}
/***************************************************************************/
static int __init init_BSP(void)
{
m5249_uarts_init();
platform_add_devices(m5249_devices, ARRAY_SIZE(m5249_devices));
return 0;
}
arch_initcall(init_BSP);
/***************************************************************************/