pfs168.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:4k
- /*
- * linux/arch/arm/mach-sa1100/pfs168.c
- */
- #include <linux/config.h>
- #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(PFS168_SA1111_BASE);
- 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();
- sa1111_init_irq(IRQ_GPIO25); /* 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);
- set_GPIO_IRQ_edge(GPIO_GPIO(25), GPIO_RISING_EDGE);
- set_GPIO_IRQ_edge(GPIO_UCB1300_IRQ, 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, 0, 1, 0, 0 }, /* Flash bank 0 */
- { 0xf0000000, 0x10000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* 16C752 DUART port A (COM5) */
- { 0xf0001000, 0x10800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* 16C752 DUART port B (COM6) */
- { 0xf0002000, 0x11000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM1 RTS control (SYSC1RTS) */
- { 0xf0003000, 0x11400000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Status LED control (SYSLED) */
- { 0xf0004000, 0x11800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* DTMF code read (SYSDTMF) */
- { 0xf0005000, 0x11c00000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* LCD configure, enable (SYSLCDDE) */
- { 0xf0006000, 0x12000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM1 DSR and motion sense (SYSC1DSR) */
- { 0xf0007000, 0x12800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* COM3 xmit enable (SYSC3TEN) */
- { 0xf0008000, 0x13000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Control register A (SYSCTLA) */
- { 0xf0009000, 0x13800000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* Control register B (SYSCTLB) */
- { 0xf000a000, 0x18000000, 0x00001000, DOMAIN_IO, 0, 1, 0, 0 }, /* SMC91C96 */
- { 0xf2800000, 0x4b800000, 0x00800000, DOMAIN_IO, 0, 1, 0, 0 }, /* MQ200 */
- { 0xf4000000, 0x40000000, 0x00100000, DOMAIN_IO, 0, 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