Changeset 1281

Timestamp:

08/07/11 18:37:51 (22 months ago)

Author:

pixeldoc2000

Message:

ixus300_sd4000 EXMEM stuff added

Location:

trunk/platform/ixus300_sd4000/sub/100d

Files:

• boot.c (modified) (1 diff)
• makefile.inc (modified) (1 diff)

trunk/platform/ixus300_sd4000/sub/100d/boot.c

@@ -190 +190 @@
         "MOV     R0, #0x53000\n"
         "STR     R0, [SP,#4]\n"
-
-        //"LDR     R0, =0x14B394\n"            // original
+#if defined(OPT_CHDK_IN_EXMEM)                 // use original heap offset since CHDK is loaded in high memory
+        "LDR     R0, =0x14B394\n"              // original
+                                               // ToDo: change address to put chdk into EXMEM
+#else                                          // otherwise use patched value
         "LDR     R0, =new_sa\n"                // +
         "LDR     R0, [R0]\n"                   // +
-
+#endif
         "LDR     R2, =0x379C00\n"
         "LDR     R1, =0x3724A8\n"

trunk/platform/ixus300_sd4000/sub/100d/makefile.inc

@@ -8 +8 @@
 MEMISOSTART=0x14B394    # ROM:FF81014C
 ROMBASEADDR=0xFF810000    # 0xFF810000 for S-, SD-, and G- series
+
+# EXMEM
+# http://chdk.setepontos.com/index.php?topic=5980.msg63834#msg63834
+# 128MB RAM (0x80000000)
+# s: 7bfffe0 e: 7ffffe0 f: 7d08a00 l: 7ff1efc c: 748800
+MAXRAMADDR=0x7ffffff    # ROM:FF88A424 0x48000000 - CAM_UNCACHED_BIT 0x40000000 = 0x80000000 - 1
+EXMEM_BUFFER_SIZE=0x400000    # Amount of EXMEM memory to allocate for CHDK = 4MB
+#EXMEM_BUFFER_SIZE=0x200000    # Amount of EXMEM memory to allocate for CHDK = 2MB
+EXMEM_HEAP_SKIP=0x2F7600   # 0x8000000 (RAM) - 0x07D08A00 (Video Buffer Size) ~ 3MB
 
 PLFLAGS=-DMEMBASEADDR=$(MEMBASEADDR) -DMEMISOSTART=$(MEMISOSTART) -DMEMISOSIZE=$(MEMISOSIZE)