2005-04-16 18:20:36 -04:00
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/*
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* include/asm-v850/rte_cb.c -- Midas lab RTE-CB series of evaluation boards
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*
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* Copyright (C) 2001,02,03 NEC Electronics Corporation
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* Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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*/
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#include <linux/init.h>
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#include <linux/irq.h>
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#include <linux/fs.h>
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#include <linux/module.h>
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2007-02-10 04:44:30 -05:00
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#include <linux/kernel.h>
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2005-04-16 18:20:36 -04:00
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#include <asm/machdep.h>
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#include <asm/v850e_uart.h>
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#include "mach.h"
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static void led_tick (void);
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/* LED access routines. */
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extern unsigned read_leds (int pos, char *buf, int len);
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extern unsigned write_leds (int pos, const char *buf, int len);
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#ifdef CONFIG_RTE_CB_MULTI
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extern void multi_init (void);
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#endif
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void __init rte_cb_early_init (void)
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{
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v850e_intc_disable_irqs ();
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#ifdef CONFIG_RTE_CB_MULTI
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multi_init ();
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#endif
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}
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void __init mach_setup (char **cmdline)
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{
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#ifdef CONFIG_RTE_MB_A_PCI
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/* Probe for Mother-A, and print a message if we find it. */
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*(volatile unsigned long *)MB_A_SRAM_ADDR = 0xDEADBEEF;
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if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0xDEADBEEF) {
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*(volatile unsigned long *)MB_A_SRAM_ADDR = 0x12345678;
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if (*(volatile unsigned long *)MB_A_SRAM_ADDR == 0x12345678)
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printk (KERN_INFO
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" NEC SolutionGear/Midas lab"
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" RTE-MOTHER-A motherboard\n");
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}
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#endif /* CONFIG_RTE_MB_A_PCI */
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mach_tick = led_tick;
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}
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void machine_restart (char *__unused)
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{
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#ifdef CONFIG_RESET_GUARD
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disable_reset_guard ();
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#endif
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asm ("jmp r0"); /* Jump to the reset vector. */
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}
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/* This says `HALt.' in LEDese. */
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static unsigned char halt_leds_msg[] = { 0x76, 0x77, 0x38, 0xF8 };
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void machine_halt (void)
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{
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#ifdef CONFIG_RESET_GUARD
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disable_reset_guard ();
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#endif
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/* Ignore all interrupts. */
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local_irq_disable ();
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/* Write a little message. */
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write_leds (0, halt_leds_msg, sizeof halt_leds_msg);
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/* Really halt. */
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for (;;)
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asm ("halt; nop; nop; nop; nop; nop");
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}
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void machine_power_off (void)
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{
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machine_halt ();
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}
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/* Animated LED display for timer tick. */
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#define TICK_UPD_FREQ 6
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static int tick_frames[][10] = {
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{ 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, -1 },
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{ 0x63, 0x5c, -1 },
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{ 0x5c, 0x00, -1 },
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{ 0x63, 0x00, -1 },
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{ -1 }
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};
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static void led_tick ()
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{
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static unsigned counter = 0;
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if (++counter == (HZ / TICK_UPD_FREQ)) {
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/* Which frame we're currently displaying for each digit. */
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static unsigned frame_nums[LED_NUM_DIGITS] = { 0 };
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/* Display image. */
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static unsigned char image[LED_NUM_DIGITS] = { 0 };
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unsigned char prev_image[LED_NUM_DIGITS];
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int write_to_leds = 1; /* true if we should actually display */
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int digit;
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/* We check to see if the physical LEDs contains what we last
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wrote to them; if not, we suppress display (this is so that
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users can write to the LEDs, and not have their output
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overwritten). As a special case, we start writing again if
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all the LEDs are blank, or our display image is all zeros
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(indicating that this is the initial update, when the actual
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LEDs might contain random data). */
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read_leds (0, prev_image, LED_NUM_DIGITS);
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for (digit = 0; digit < LED_NUM_DIGITS; digit++)
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if (image[digit] != prev_image[digit]
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&& image[digit] && prev_image[digit])
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{
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write_to_leds = 0;
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break;
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}
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/* Update display image. */
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for (digit = 0;
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digit < LED_NUM_DIGITS && tick_frames[digit][0] >= 0;
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digit++)
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{
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int frame = tick_frames[digit][frame_nums[digit]];
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if (frame < 0) {
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image[digit] = tick_frames[digit][0];
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frame_nums[digit] = 1;
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} else {
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image[digit] = frame;
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frame_nums[digit]++;
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break;
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}
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}
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if (write_to_leds)
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/* Write the display image to the physical LEDs. */
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write_leds (0, image, LED_NUM_DIGITS);
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counter = 0;
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}
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}
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/* Mother-A interrupts. */
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#ifdef CONFIG_RTE_GBUS_INT
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#define L GBUS_INT_PRIORITY_LOW
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#define M GBUS_INT_PRIORITY_MEDIUM
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#define H GBUS_INT_PRIORITY_HIGH
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static struct gbus_int_irq_init gbus_irq_inits[] = {
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#ifdef CONFIG_RTE_MB_A_PCI
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{ "MB_A_LAN", IRQ_MB_A_LAN, 1, 1, L },
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{ "MB_A_PCI1", IRQ_MB_A_PCI1(0), IRQ_MB_A_PCI1_NUM, 1, L },
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{ "MB_A_PCI2", IRQ_MB_A_PCI2(0), IRQ_MB_A_PCI2_NUM, 1, L },
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{ "MB_A_EXT", IRQ_MB_A_EXT(0), IRQ_MB_A_EXT_NUM, 1, L },
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{ "MB_A_USB_OC",IRQ_MB_A_USB_OC(0), IRQ_MB_A_USB_OC_NUM, 1, L },
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{ "MB_A_PCMCIA_OC",IRQ_MB_A_PCMCIA_OC, 1, 1, L },
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#endif
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{ 0 }
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};
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2007-02-10 04:44:30 -05:00
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#define NUM_GBUS_IRQ_INITS (ARRAY_SIZE(gbus_irq_inits) - 1)
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2005-04-16 18:20:36 -04:00
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static struct hw_interrupt_type gbus_hw_itypes[NUM_GBUS_IRQ_INITS];
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#endif /* CONFIG_RTE_GBUS_INT */
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void __init rte_cb_init_irqs (void)
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{
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#ifdef CONFIG_RTE_GBUS_INT
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gbus_int_init_irqs ();
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gbus_int_init_irq_types (gbus_irq_inits, gbus_hw_itypes);
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#endif /* CONFIG_RTE_GBUS_INT */
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}
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