diff options
Diffstat (limited to 'arch/v850/kernel/teg.c')
| -rw-r--r-- | arch/v850/kernel/teg.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/v850/kernel/teg.c b/arch/v850/kernel/teg.c new file mode 100644 index 00000000000..495cf8f37bc --- /dev/null +++ b/arch/v850/kernel/teg.c @@ -0,0 +1,63 @@ +/* + * arch/v850/kernel/teg.c -- NB85E-TEG cpu chip + * + * Copyright (C) 2001,02,03 NEC Electronics Corporation + * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/swap.h> +#include <linux/bootmem.h> +#include <linux/irq.h> + +#include <asm/atomic.h> +#include <asm/page.h> +#include <asm/machdep.h> +#include <asm/v850e_timer_d.h> + +#include "mach.h" + +void __init mach_sched_init (struct irqaction *timer_action) +{ + /* Select timer interrupt instead of external pin. */ + TEG_ISS |= 0x1; + /* Start hardware timer. */ + v850e_timer_d_configure (0, HZ); + /* Install timer interrupt handler. */ + setup_irq (IRQ_INTCMD(0), timer_action); +} + +static struct v850e_intc_irq_init irq_inits[] = { + { "IRQ", 0, NUM_CPU_IRQS, 1, 7 }, + { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 }, + { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 1, 3 }, + { "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 1, 4 }, + { "ST", IRQ_INTST(0), IRQ_INTST_NUM, 1, 5 }, + { 0 } +}; +#define NUM_IRQ_INITS ((sizeof irq_inits / sizeof irq_inits[0]) - 1) + +static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS]; + +/* Initialize MA chip interrupts. */ +void __init teg_init_irqs (void) +{ + v850e_intc_init_irq_types (irq_inits, hw_itypes); +} + +/* Called before configuring an on-chip UART. */ +void teg_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud) +{ + /* Enable UART I/O pins instead of external interrupt pins, and + UART interrupts instead of external pin interrupts. */ + TEG_ISS |= 0x4E; +} |