[RFC][Patchset 11/20] Support for PC-9800 (kernel)

[Osamu Tomita]

This is a part 11/20 of patchset for add support NEC PC-9800 architecture,
against 2.5.44.

Summary:
   - add PC-9800 special features.
   - CLOCK_TICK is not constant.

diffstat:
  init/main.c    |    3 +++
  kernel/dma.c   |    3 +++
  kernel/ksyms.c |    4 ++++
  kernel/timer.c |    5 +++++
  4 files changed, 15 insertions(+)

patch:
diff -urN linux/init/main.c linux98/init/main.c
--- linux/init/main.c	Thu Oct 31 13:23:44 2002
+++ linux98/init/main.c	Thu Oct 31 17:36:24 2002
@@ -100,6 +100,9 @@
   char *execute_command;
  +/* Indicates PC-9800 architecture  No:0 Yes:1 */
+int pc98 = 0;
+
  /* Setup configured maximum number of CPUs to activate */
  static unsigned int max_cpus = UINT_MAX;
  diff -urN linux/kernel/dma.c linux98/kernel/dma.c
--- linux/kernel/dma.c	Sun Aug 11 10:41:22 2002
+++ linux98/kernel/dma.c	Wed Aug 21 09:53:59 2002
@@ -9,6 +9,7 @@
   *   [It also happened to remove the sizeof(char *) == sizeof(int)
   *   assumption introduced because of those /proc/dma patches. -- Hennus]
   */
+#include <linux/config.h>
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/errno.h>
@@ -62,10 +63,12 @@
  	{ 0, 0 },
  	{ 0, 0 },
  	{ 0, 0 },
+#ifndef CONFIG_PC9800
  	{ 1, "cascade" },
  	{ 0, 0 },
  	{ 0, 0 },
  	{ 0, 0 }
+#endif
  };
   diff -urN linux/kernel/ksyms.c linux98/kernel/ksyms.c
--- linux/kernel/ksyms.c	Sat Oct 19 13:01:08 2002
+++ linux98/kernel/ksyms.c	Sat Oct 26 16:57:37 2002
@@ -599,5 +599,9 @@
  EXPORT_SYMBOL(__per_cpu_offset);
  #endif
  +/* Indicates PC-9800 architecture  No:0 Yes:1 */
+extern int pc98;
+EXPORT_SYMBOL(pc98);
+
  /* debug */
  EXPORT_SYMBOL(dump_stack);
diff -urN linux/kernel/timer.c linux98/kernel/timer.c
--- linux/kernel/timer.c	Thu Oct 31 13:23:44 2002
+++ linux98/kernel/timer.c	Thu Oct 31 17:36:24 2002
@@ -400,8 +400,13 @@
  /*
   * Timekeeping variables
   */
+#ifndef CONFIG_PC9800
  unsigned long tick_usec = TICK_USEC; 		/* ACTHZ   period (usec) */
  unsigned long tick_nsec = TICK_NSEC(TICK_USEC);	/* USER_HZ period (nsec) */
+#else
+extern unsigned long tick_usec; 		/* ACTHZ   period (usec) */
+extern unsigned long tick_nsec;			/* USER_HZ period (nsec) */
+#endif
   /* The current time */
  struct timespec xtime __attribute__ ((aligned (16)));