add support for PC-9800 architecture (kernel)

PATCH In review Osamu Tomita 1 participant 1 message Oct 28, 2002

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Osamu Tomita

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2002-10-28 17:32 UTC #0 lore raw

PATCH 11/23 add support for PC-9800 architecture (kernel)

This is a part 11/23 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:

init/main.c +3 -0

diff -urN linux/init/main.c linux98/init/main.c
@@ -99,6 +99,9 @@
 
 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;

kernel/dma.c +3 -0

diff -urN linux/kernel/dma.c linux98/kernel/dma.c
@@ -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
 };

kernel/ksyms.c +4 -0

diff -urN linux/kernel/ksyms.c linux98/kernel/ksyms.c
@@ -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);

kernel/timer.c +5 -0

diff -urN linux/kernel/timer.c linux98/kernel/timer.c
@@ -376,8 +376,13 @@
 /*
  * 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)));