Viewing file:  pfs168.c (3.85 KB) -rw-r--r--
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/*
* linux/arch/arm/mach-sa1100/pfs168.c
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/errno.h>
#include <asm/hardware.h>
#include <asm/setup.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include "generic.h"
#include "sa1111.h"
static int __init pfs168_init(void)
{
int ret;
if (!machine_is_pfs168())
return -ENODEV;
/*
* Ensure that the memory bus request/grant signals are setup,
* and the grant is held in its inactive state
*/
sa1110_mb_disable();
/*
* Probe for SA1111.
*/
ret = sa1111_probe();
if (ret < 0)
return ret;
/*
* We found it. Wake the chip up.
*/
sa1111_wake();
/*
* The SDRAM configuration of the SA1110 and the SA1111 must
* match. This is very important to ensure that SA1111 accesses
* don't corrupt the SDRAM. Note that this ungates the SA1111's
* MBGNT signal, so we must have called sa1110_mb_disable()
* beforehand.
*/
sa1111_configure_smc(1,
FExtr(MDCNFG, MDCNFG_SA1110_DRAC0),
FExtr(MDCNFG, MDCNFG_SA1110_TDL0));
/*
* We only need to turn on DCLK whenever we want to use the
* DMA. It can otherwise be held firmly in the off position.
*/
SKPCR |= SKPCR_DCLKEN;
/*
* Enable the SA1110 memory bus request and grant signals.
*/
sa1110_mb_enable();
set_GPIO_IRQ_edge(GPIO_GPIO(25), GPIO_RISING_EDGE);
sa1111_init_irq(SA1100_GPIO_TO_IRQ(25)); /* SA1111 IRQ on GPIO 25 */
return 0;
}
__initcall(pfs168_init);
static void __init pfs168_init_irq(void)
{
sa1100_init_irq();
/*
* Need to register these as rising edge interrupts
* for standard 16550 serial driver support.
*/
set_GPIO_IRQ_edge(GPIO_GPIO(19), GPIO_RISING_EDGE);
set_GPIO_IRQ_edge(GPIO_GPIO(20), GPIO_RISING_EDGE);
}
static void __init
fixup_pfs168(struct machine_desc *desc, struct param_struct *params,
char **cmdline, struct meminfo *mi)
{
SET_BANK( 0, 0xc0000000, 16*1024*1024 );
mi->nr_banks = 1;
ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
setup_ramdisk( 1, 0, 0, 8192 );
setup_initrd( 0xc0800000, 3*1024*1024 );
}
static struct map_desc pfs168_io_desc[] __initdata = {
/* virtual physical length domain r w c b */
{ 0xe8000000, 0x00000000, 0x02000000, DOMAIN_IO, 1, 1, 0, 0 }, /* Flash bank 0 */
{ 0xf0000000, 0x10000000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* 16C752 DUART port A (COM5) */
{ 0xf0001000, 0x10800000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* 16C752 DUART port B (COM6) */
{ 0xf0002000, 0x11000000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* COM1 RTS control (SYSC1RTS) */
{ 0xf0003000, 0x11400000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* Status LED control (SYSLED) */
{ 0xf0004000, 0x11800000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* DTMF code read (SYSDTMF) */
{ 0xf0005000, 0x11c00000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* LCD configure, enable (SYSLCDDE) */
{ 0xf0006000, 0x12000000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* COM1 DSR and motion sense (SYSC1DSR) */
{ 0xf0007000, 0x12800000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* COM3 xmit enable (SYSC3TEN) */
{ 0xf0008000, 0x13000000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* Control register A (SYSCTLA) */
{ 0xf0009000, 0x13800000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* Control register B (SYSCTLB) */
{ 0xf000a000, 0x18000000, 0x00001000, DOMAIN_IO, 1, 1, 0, 0 }, /* SMC91C96 */
{ 0xf2800000, 0x4b800000, 0x00800000, DOMAIN_IO, 1, 1, 0, 0 }, /* MQ200 */
{ 0xf4000000, 0x40000000, 0x00100000, DOMAIN_IO, 1, 1, 0, 0 }, /* SA-1111 */
LAST_DESC
};
static void __init pfs168_map_io(void)
{
sa1100_map_io();
iotable_init(pfs168_io_desc);
sa1100_register_uart(0, 3);
sa1100_register_uart(1, 1);
}
MACHINE_START(PFS168, "Tulsa")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
#if defined(CONFIG_PFS168_CMDLINE)
BOOT_PARAMS(0xc0000100)
#endif
FIXUP(fixup_pfs168)
MAPIO(pfs168_map_io)
INITIRQ(pfs168_init_irq)
MACHINE_END
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