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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-shark/core.c | |
download | blackbird-obmc-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz blackbird-obmc-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-shark/core.c')
-rw-r--r-- | arch/arm/mach-shark/core.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/arm/mach-shark/core.c b/arch/arm/mach-shark/core.c new file mode 100644 index 000000000000..a9bc5d0dbd85 --- /dev/null +++ b/arch/arm/mach-shark/core.c @@ -0,0 +1,114 @@ +/* + * linux/arch/arm/mach-shark/arch.c + * + * Architecture specific stuff. + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/serial_8250.h> + +#include <asm/setup.h> +#include <asm/mach-types.h> +#include <asm/io.h> +#include <asm/leds.h> +#include <asm/param.h> + +#include <asm/mach/map.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> + +static struct plat_serial8250_port serial_platform_data[] = { + { + .iobase = 0x3f8, + .irq = 4, + .uartclk = 1843200, + .regshift = 2, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { + .iobase = 0x2f8, + .irq = 3, + .uartclk = 1843200, + .regshift = 2, + .iotype = UPIO_PORT, + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, + }, + { }, +}; + +static struct platform_device serial_device = { + .name = "serial8250", + .id = 0, + .dev = { + .platform_data = serial_platform_data, + }, +}; + +static int __init shark_init(void) +{ + int ret; + + if (machine_is_shark()) + ret = platform_device_register(&serial_device); + + return ret; +} + +arch_initcall(shark_init); + +extern void shark_init_irq(void); + +static struct map_desc shark_io_desc[] __initdata = { + { IO_BASE , IO_START , IO_SIZE , MT_DEVICE } +}; + +static void __init shark_map_io(void) +{ + iotable_init(shark_io_desc, ARRAY_SIZE(shark_io_desc)); +} + +#define IRQ_TIMER 0 +#define HZ_TIME ((1193180 + HZ/2) / HZ) + +static irqreturn_t +shark_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + write_seqlock(&xtime_lock); + timer_tick(regs); + write_sequnlock(&xtime_lock); + return IRQ_HANDLED; +} + +static struct irqaction shark_timer_irq = { + .name = "Shark Timer Tick", + .flags = SA_INTERRUPT, + .handler = shark_timer_interrupt +}; + +/* + * Set up timer interrupt, and return the current time in seconds. + */ +static void __init shark_timer_init(void) +{ + outb(0x34, 0x43); /* binary, mode 0, LSB/MSB, Ch 0 */ + outb(HZ_TIME & 0xff, 0x40); /* LSB of count */ + outb(HZ_TIME >> 8, 0x40); + + setup_irq(IRQ_TIMER, &shark_timer_irq); +} + +static struct sys_timer shark_timer = { + .init = shark_timer_init, +}; + +MACHINE_START(SHARK, "Shark") + MAINTAINER("Alexander Schulz") + BOOT_MEM(0x08000000, 0x40000000, 0xe0000000) + BOOT_PARAMS(0x08003000) + MAPIO(shark_map_io) + INITIRQ(shark_init_irq) + .timer = &shark_timer, +MACHINE_END |