Changeset 32f6e1bd in mainline for arch/ia32/src/boot/memmap.S

Timestamp:

2005-09-02T15:09:55Z (20 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

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

Children:

375237d1

Parents:

7df54df

Message:

Resolved mapping of e820 boot area, so that it can be accessed as
e820table from 32-bit mode and e820table_boot from real mode.

File:

• arch/ia32/src/boot/memmap.S (modified) (5 diffs)

arch/ia32/src/boot/memmap.S

@@ -35 +35 @@
 
 .global memmap_arch_init
-.global e820counter
-.global e820table
 .global e801memorysize
 
@@ -48 +46 @@
         movw    %bx,%ds
         movw    %bx,%es
-        movw    $e820table,%di
-        movb    $E820_MAX_RECORDS,e820counter
+        movw    $e820table_boot,%di
+        movb    $E820_MAX_RECORDS,e820counter_boot
 e820loop:       
         movl    $E820_SMAP,%edx         # control sequence "SMAP"
@@ -68 +66 @@
         movw    %ax,%di
                 
-        decb    e820counter # buffer is full
+        decb    e820counter_boot # buffer is full
         jz      e820end
         
@@ -76 +74 @@
 e820end:
         movb    $E820_MAX_RECORDS,%al
-        subb    e820counter,%al
-        movb    %al,e820counter # store # of valid entries in e820counter
+        subb    e820counter_boot,%al
+        movb    %al,e820counter_boot # store # of valid entries in e820counter
 
         jmp     e801begin
 
 e820err:
-        movb    $0,e820counter
+        movb    $0,e820counter_boot
 
 # method e801 - get size of memory
@@ -118 +116 @@
 e801memorysize:
         .long   0
-
-e820counter:
-        .byte 0xff
-
-e820table:
-        .space  (32*E820_RECORD_SIZE),0xff # space for 32 records, each E820_RECORD_SIZE bytes long
+