Changeset 7c7184a in rtems for c/src/lib/libbsp/m68k/uC5282/start/start.S

Timestamp:

02/01/05 15:12:55 (18 years ago)

Author:

Eric Norum <WENorum@…>

Branches:

4.10, 4.11, 4.8, 4.9, 5, master

Children:

50fea8b

Parents:

7a6d1a3

Message:

Place FEC buffer descriptors in static RAM. No more cache concerns.

File:

• c/src/lib/libbsp/m68k/uC5282/start/start.S (modified) (2 diffs)

c/src/lib/libbsp/m68k/uC5282/start/start.S

@@ -314 +314 @@
     PUBLIC (start)
 SYM(start):
-    move.w  #0x2700,sr                  | Disable interrupts
-
-    move.l  #__SRAMBASE+1,d0     | Enable the MCF5282 internal SRAM
-    movec   d0,%rambar          | ...so we have a stack
-    move.l  #__SRAMBASE+SRAM_SIZE-4,sp   | Overwrite the fake stack pointer
+    move.w  #0x2700,sr                 | Disable interrupts
 
     /*
@@ -324 +320 @@
      * moved the IPSBAR, we're doomed........
      */
-    move.l  #__IPSBAR+1,d0      | Enable the MCF5282 internal peripherals
+    move.l  #__IPSBAR+1,d0             | Enable the MCF5282 internal peripherals
     move.l  d0,DEFAULT_IPSBAR
-    
+    move.l  #__SRAMBASE+0x201,d0       | Enable the MCF5282 internal SRAM
+    movec   d0,%rambar                 | CPU-space copy of RAMBAR
+    move.l  d0,DEFAULT_IPSBAR+8        | Memory-space copy of RAMBAR
+    move.l  #__SRAMBASE+SRAM_SIZE-4,sp | Overwrite the fake stack pointer
+
     /*
      * Copy the vector table to address 0 (VBR must be 0 mod 2^20)