Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * arch/v850/kernel/teg.c -- NB85E-TEG cpu chip |
| 3 | * |
| 4 | * Copyright (C) 2001,02,03 NEC Electronics Corporation |
| 5 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> |
| 6 | * |
| 7 | * This file is subject to the terms and conditions of the GNU General |
| 8 | * Public License. See the file COPYING in the main directory of this |
| 9 | * archive for more details. |
| 10 | * |
| 11 | * Written by Miles Bader <miles@gnu.org> |
| 12 | */ |
| 13 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/kernel.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/mm.h> |
| 17 | #include <linux/swap.h> |
| 18 | #include <linux/bootmem.h> |
| 19 | #include <linux/irq.h> |
| 20 | |
| 21 | #include <asm/atomic.h> |
| 22 | #include <asm/page.h> |
| 23 | #include <asm/machdep.h> |
| 24 | #include <asm/v850e_timer_d.h> |
| 25 | |
| 26 | #include "mach.h" |
| 27 | |
| 28 | void __init mach_sched_init (struct irqaction *timer_action) |
| 29 | { |
| 30 | /* Select timer interrupt instead of external pin. */ |
| 31 | TEG_ISS |= 0x1; |
| 32 | /* Start hardware timer. */ |
| 33 | v850e_timer_d_configure (0, HZ); |
| 34 | /* Install timer interrupt handler. */ |
| 35 | setup_irq (IRQ_INTCMD(0), timer_action); |
| 36 | } |
| 37 | |
| 38 | static struct v850e_intc_irq_init irq_inits[] = { |
| 39 | { "IRQ", 0, NUM_CPU_IRQS, 1, 7 }, |
| 40 | { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 }, |
| 41 | { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 1, 3 }, |
| 42 | { "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 1, 4 }, |
| 43 | { "ST", IRQ_INTST(0), IRQ_INTST_NUM, 1, 5 }, |
| 44 | { 0 } |
| 45 | }; |
Ahmed S. Darwish | 81d79be | 2007-02-10 01:44:30 -0800 | [diff] [blame] | 46 | #define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS]; |
| 49 | |
| 50 | /* Initialize MA chip interrupts. */ |
| 51 | void __init teg_init_irqs (void) |
| 52 | { |
| 53 | v850e_intc_init_irq_types (irq_inits, hw_itypes); |
| 54 | } |
| 55 | |
| 56 | /* Called before configuring an on-chip UART. */ |
| 57 | void teg_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud) |
| 58 | { |
| 59 | /* Enable UART I/O pins instead of external interrupt pins, and |
| 60 | UART interrupts instead of external pin interrupts. */ |
| 61 | TEG_ISS |= 0x4E; |
| 62 | } |