Changeset b5a3b50 in mainline for boot/arch/arm32/include/mm.h

Timestamp:

2012-12-31T08:41:10Z (12 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

029e3cc, 17cc8f4f, 660e8fa, 664fd6d5

Parents:

b55877d

git-author:

Beniamino Galvani <b.galvani@…> (2012-12-31 08:41:10)

git-committer:

Jakub Jermar <jakub@…> (2012-12-31 08:41:10)

Message:

Enable ARM caches in the boot stage of HelenOS to speed up the
decompression. We get a decompression time of 8 seconds on a mini2440
board and only slightly more on a GTA02.

File:

• boot/arch/arm32/include/mm.h (modified) (1 diff)

boot/arch/arm32/include/mm.h

@@ -47 +47 @@
 /** Describe "section" page table entry (one-level paging with 1 MB sized pages). */
 #define PTE_DESCRIPTOR_SECTION  0x02
+/** Shift of memory address in section descriptor */
+#define PTE_SECTION_SHIFT  20
 
 /** Page table access rights: user - no access, kernel - read/write. */
 #define PTE_AP_USER_NO_KERNEL_RW  0x01
+
+/** Start of memory mapped I/O area for GTA02 */
+#define GTA02_IOMEM_START  0x48000000
+/** End of memory mapped I/O area for GTA02 */
+#define GTA02_IOMEM_END  0x60000000
 
 /* Page table level 0 entry - "section" format is used