2 * arch/v850/kernel/ma.c -- V850E/MA series of cpu chips
4 * Copyright (C) 2001,02,03 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
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.
11 * Written by Miles Bader <miles@gnu.org>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
17 #include <linux/swap.h>
18 #include <linux/bootmem.h>
19 #include <linux/irq.h>
21 #include <asm/atomic.h>
23 #include <asm/machdep.h>
24 #include <asm/v850e_timer_d.h>
28 void __init mach_sched_init (struct irqaction *timer_action)
30 /* Start hardware timer. */
31 v850e_timer_d_configure (0, HZ);
32 /* Install timer interrupt handler. */
33 setup_irq (IRQ_INTCMD(0), timer_action);
36 static struct v850e_intc_irq_init irq_inits[] = {
37 { "IRQ", 0, NUM_MACH_IRQS, 1, 7 },
38 { "CMD", IRQ_INTCMD(0), IRQ_INTCMD_NUM, 1, 5 },
39 { "DMA", IRQ_INTDMA(0), IRQ_INTDMA_NUM, 1, 2 },
40 { "CSI", IRQ_INTCSI(0), IRQ_INTCSI_NUM, 4, 4 },
41 { "SER", IRQ_INTSER(0), IRQ_INTSER_NUM, 4, 3 },
42 { "SR", IRQ_INTSR(0), IRQ_INTSR_NUM, 4, 4 },
43 { "ST", IRQ_INTST(0), IRQ_INTST_NUM, 4, 5 },
46 #define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1)
48 static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS];
50 /* Initialize MA chip interrupts. */
51 void __init ma_init_irqs (void)
53 v850e_intc_init_irq_types (irq_inits, hw_itypes);
56 /* Called before configuring an on-chip UART. */
57 void ma_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud)
59 /* We only know about the first two UART channels (though
60 specific chips may have more). */
62 unsigned bits = 0x3 << (chan * 3);
63 /* Specify that the relevant pins on the chip should do
64 serial I/O, not direct I/O. */
66 /* Specify that we're using the UART, not the CSI device. */