patch-2.4.19 linux-2.4.19/arch/mips/hp-lj/setup.c

• Lines: 162
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/hp-lj/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/hp-lj/setup.c linux-2.4.19/arch/mips/hp-lj/setup.c
@@ -0,0 +1,161 @@
+/*
+ * Setup pointers to hardware-dependent routines.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 1997, 1998 by Ralf Baechle
+ */
+#include <linux/config.h>
+#include <linux/hdreg.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/ide.h>
+#include <linux/bootmem.h>
+#include <asm/mc146818rtc.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/hp-lj/asic.h>
+#include "utils.h"
+
+#ifdef CONFIG_REMOTE_DEBUG
+int remote_debug = 0;
+#endif
+
+const char *get_system_type(void)
+{
+	return "HP LaserJet";		/* But which exactly?  */
+}
+
+static void (*timer_interrupt_service)(int irq, void *dev_id, struct pt_regs * regs) = NULL;
+
+
+static void andros_timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+   if (!(*((volatile unsigned int*)0xbfea0010) & 0x20))  // mask = pend & en
+      return;
+
+   /* clear timer interrupt */
+   {
+      unsigned int tmr = *((volatile unsigned int*)0xbfe90040);   // ctl bits
+      *((volatile unsigned int*)0xbfe90040) = tmr;     // write to ack
+      *((volatile unsigned int*)0xbfea000c) = 0x20;    // sys int ack
+   }
+
+   /* service interrupt */
+   timer_interrupt_service(irq, dev_id, regs);
+}
+
+static void harmony_timer_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+   if (!(*((volatile unsigned int*)0xbff63000) & 0x01))
+      return;  // big sys     int reg, 01-timer  did it
+   if (!(*((volatile unsigned int*)0xbff610a4) & 0x01))
+      return;  // local small int reg, 01-timer0 did it
+
+   *((volatile unsigned int*)0xbff610a4) = 1;   // ack local timer0 bit
+   *((volatile unsigned int*)0xbff63000) = 1;   // ack global timer bit
+
+   /* service interrupt */
+   timer_interrupt_service(irq, dev_id, regs);
+}
+
+
+#define ASIC_IRQ_NUMBER  2
+
+
+static void __init hp_time_init(struct irqaction *irq)
+{
+    timer_interrupt_service = irq->handler;
+
+    if (GetAsicId() == AndrosAsic) {
+       //*((volatile unsigned int*)0xbfe90000) = 0x2f;  // set by bootloader to 0x20              // prescaler
+       *((volatile unsigned int*)0xbfe90040) = 0x21;    // 20-res of 1kHz,1-int ack                // control
+       *((volatile unsigned int*)0xbfe90048) = 0x09;    // 09-reload val                          // reload
+       *((volatile unsigned int*)0xbfe90044) = 0x09;    // 09-count val                           // count
+       *((volatile unsigned int*)0xbfe90040) = 0x2f;    // 8-int enable,4-reload en,2-count down en,1-int-ack
+
+       irq->handler = andros_timer_interrupt;
+       irq->flags |= SA_INTERRUPT | SA_SHIRQ;
+       printk("setting up timer in hp_time_init\n");
+       setup_irq(ASIC_IRQ_NUMBER, irq); 
+    
+       // enable timer interrupt
+       *((volatile unsigned int*)0xbfea0000) = 0x20;
+
+    } else if (GetAsicId() == HarmonyAsic) {
+
+        *((volatile unsigned int*)0xbff61000) = 99;  // prescaler, 100Mz sys clk
+        *((volatile unsigned int*)0xbff61028) = 0x09;  // reload reg
+        *((volatile unsigned int*)0xbff61024) = 0x09;  // count reg
+        *((volatile unsigned int*)0xbff61020) = 0x0b;  // 80-1khz res on timer, 2 reload en, 1 - count down en
+
+        irq->handler = harmony_timer_interrupt;
+        irq->flags |= SA_INTERRUPT | SA_SHIRQ;
+        setup_irq(ASIC_IRQ_NUMBER, irq);
+
+        *((volatile unsigned int*)0xbff610a0) |= 1;    // turn on timer0
+
+    } else if (GetAsicId() == UnknownAsic) 
+        printk("Unknown asic in hp_time_init()\n");
+    else
+        printk("Unsupported asic in hp_time_init()\n");
+}
+
+
+static void hplj_restart(void)
+{
+   if (GetAsicId() == AndrosAsic) 
+       *((volatile unsigned int *) 0xbfe900c0) = 0;
+
+
+    if (GetAsicId() == HarmonyAsic)
+        *((volatile unsigned int *) 0xbff62030) = 0;
+
+   printk("Restart Failed ... halting instead\n");
+   while(1);
+}
+
+static void hplj_halt(void)
+{
+   while(1);
+}
+
+
+void __init hp_setup(void)
+{
+#ifdef CONFIG_PCI
+   extern void pci_setup(void);
+   pci_setup();
+#endif
+
+#ifdef CONFIG_IDE
+   {
+      extern struct ide_ops std_ide_ops;
+      ide_ops = &std_ide_ops;
+   }
+#endif
+
+   _machine_restart =(void (*)(char *)) hplj_restart;
+   _machine_halt = hplj_halt;
+   _machine_power_off = hplj_halt;
+
+   board_timer_setup = hp_time_init;
+
+#ifdef CONFIG_REMOTE_DEBUG
+   {
+      extern char CommandLine[];
+      remote_debug = (strstr(CommandLine, "kgdb") != NULL);
+   }
+#endif
+
+   printk("HP SETUP\n");
+}
+
+int __init page_is_ram(unsigned long pagenr)
+{
+	return 1;
+}
+