Changeset f8ddd17 in mainline for kernel/arch/ia32/src

Timestamp:

2006-12-09T20:20:50Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b82a13c

Parents:

9ab9c2ec

Message:

Rework support for virtually indexed cache.
Instead of repeatedly flushing the data cache, which was a huge overkill, refuse to create an illegal address alias
in the kernel (again) and allocate appropriate page color in userspace instead. Extend the detection also to
SYS_PHYSMEM_MAP syscall.

Add support for tracking physical memory areas mappable by SYS_PHYSMEM_MAP.

Lots of coding style changes.

File:

• kernel/arch/ia32/src/drivers/ega.c (modified) (4 diffs)

kernel/arch/ia32/src/drivers/ega.c

@@ -47 +47 @@
 #include <console/console.h>
 #include <sysinfo/sysinfo.h>
+#include <ddi/ddi.h>
 
 /*
@@ -52 +53 @@
  * Simple and short. Function for displaying characters and "scrolling".
  */
+
+static parea_t ega_parea;       /**< Physical memory area for EGA video RAM. */
 
 SPINLOCK_INITIALIZE(egalock);
@@ -80 +83 @@
         stdout = &ega_console;
         
+        ega_parea.pbase = VIDEORAM;
+        ega_parea.vbase = (uintptr_t) videoram;
+        ega_parea.frames = 1;
+        ega_parea.cacheable = false;
+        ddi_parea_register(&ega_parea);
+
         sysinfo_set_item_val("fb", NULL, true);
         sysinfo_set_item_val("fb.kind", NULL, 2);
@@ -85 +94 @@
         sysinfo_set_item_val("fb.height", NULL, ROWS);
         sysinfo_set_item_val("fb.address.physical", NULL, VIDEORAM);
+        sysinfo_set_item_val("fb.address.color", NULL, PAGE_COLOR((uintptr_t)
+                videoram));
         
 #ifndef CONFIG_FB