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1da177e4 LT |
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 | ||
1da177e4 LT |
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 | /* 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 | ||
36 | static 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 | }; | |
81d79bec | 47 | #define NUM_IRQ_INITS (ARRAY_SIZE(irq_inits) - 1) |
1da177e4 LT |
48 | |
49 | static struct hw_interrupt_type hw_itypes[NUM_IRQ_INITS]; | |
50 | ||
51 | /* Initialize V850E/ME2 chip interrupts. */ | |
52 | void __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. */ | |
58 | void me2_uart_pre_configure (unsigned chan, unsigned cflags, unsigned baud) | |
59 | { | |
60 | if (chan == 0) { | |
5b20311e | 61 | /* Specify that the relevant pins on the chip should do |
1da177e4 LT |
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) { | |
5b20311e | 67 | /* Specify that the relevant pins on the chip should do |
1da177e4 LT |
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 | } |