1/* 2 * arch/v850/kernel/me2.c -- V850E/ME2 chip-specific support 3 * 4 * Copyright (C) 2003 NEC Corporation 5 * Copyright (C) 2003 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 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 28void __init mach_sched_init (struct irqaction *timer_action) 29{ 30 /* Start hardware timer. */ 31 v850e_timer_d_configure (0, HZ); 32 /* Install timer interrupt handler. */ 33 setup_irq (IRQ_INTCMD(0), timer_action); 34} 35 36static struct v850e_intc_irq_init irq_inits[] = { 37 { "IRQ", 0, NUM_CPU_IRQS, 1, 7 }, 38 { "INTP", IRQ_INTP(0), IRQ_INTP_NUM, 1, 5 }, 39 { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 3 }, 40 { "UBTIRE", IRQ_INTUBTIRE(0), IRQ_INTUBTIRE_NUM, 5, 4 }, 41 { "UBTIR", IRQ_INTUBTIR(0), IRQ_INTUBTIR_NUM, 5, 4 }, 42 { "UBTIT", IRQ_INTUBTIT(0), IRQ_INTUBTIT_NUM, 5, 4 }, 43 { "UBTIF", IRQ_INTUBTIF(0), IRQ_INTUBTIF_NUM, 5, 4 }, 44 { "UBTITO", IRQ_INTUBTITO(0), IRQ_INTUBTITO_NUM, 5, 4 }, 45 { 0 } 46}; 47#define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1) 48 49static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS]; 50 51/* Initialize V850E/ME2 chip interrupts. */ 52void __init me2_init_irqs (void) 53{ 54 v850e_intc_init_irq_types (irq_inits, hw_itypes); 55} 56 57/* Called before configuring an on-chip UART. */ 58void me2_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud) 59{ 60 if (chan == 0) { 61 /* Specify that the relevent pins on the chip should do 62 serial I/O, not direct I/O. */ 63 ME2_PORT1_PMC |= 0xC; 64 /* Specify that we're using the UART, not the CSI device. */ 65 ME2_PORT1_PFC |= 0xC; 66 } else if (chan == 1) { 67 /* Specify that the relevent pins on the chip should do 68 serial I/O, not direct I/O. */ 69 ME2_PORT2_PMC |= 0x6; 70 /* Specify that we're using the UART, not the CSI device. */ 71 ME2_PORT2_PFC |= 0x6; 72 } 73} 74