Added plugin support for 8MB-modified units. This bumps the plugin API version number again.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3831 a1c6a512-1295-4272-9138-f99709370657

apps/Makefile

@@ -74,7 +74,7 @@ endif
 all : $(OBJDIR)/$(OUTNAME) rocks
 
 rocks:
-	$(MAKE) -C plugins TARGET=$(TARGET) DEBUG=$(DEBUG) OBJDIR=$(OBJDIR) VERSION=$(VERSION) EXTRA_DEFINES="$(EXTRA_DEFINES)"
+	$(MAKE) -C plugins TARGET=$(TARGET) DEBUG=$(DEBUG) OBJDIR=$(OBJDIR) VERSION=$(VERSION) EXTRA_DEFINES="$(EXTRA_DEFINES)" MEM=${MEM}
 
 $(OBJDIR)/librockbox.a:
 	make -C $(FIRMWARE) TARGET=$(TARGET) DEBUG=$(DEBUG) OBJDIR=$(OBJDIR)

apps/plugin.c

@@ -49,7 +49,7 @@
 #define PREFIX(_x_) _x_
 #endif
 
-static int plugin_test(int api_version, int model);
+static int plugin_test(int api_version, int model, int memsize);
 
 static struct plugin_api rockbox_api = {
     PLUGIN_API_VERSION,
@@ -230,7 +230,7 @@ int plugin_load(char* plugin, void* parameter)
     return PLUGIN_OK;
 }
 
-int plugin_test(int api_version, int model)
+int plugin_test(int api_version, int model, int memsize)
 {
     if (api_version != PLUGIN_API_VERSION)
         return PLUGIN_WRONG_API_VERSION;
@@ -238,5 +238,8 @@ int plugin_test(int api_version, int model)
     if (model != MODEL)
         return PLUGIN_WRONG_MODEL;
 
+    if (memsize != MEM)
+        return PLUGIN_WRONG_MODEL;
+    
     return PLUGIN_OK;
 }

apps/plugin.h

@@ -25,6 +25,10 @@
 #define NO_REDEFINES_PLEASE
 #endif
 
+#ifndef MEM
+#define MEM 2
+#endif
+
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -37,7 +41,7 @@
 #include "lcd.h"
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 3
+#define PLUGIN_API_VERSION 4
 
 /* plugin return codes */
 enum plugin_status {
@@ -64,7 +68,7 @@ enum model {
 /* compatibility test macro */
 #define TEST_PLUGIN_API(_api_) \
 do { \
- int _rc_ = _api_->plugin_test(PLUGIN_API_VERSION, MODEL); \
+ int _rc_ = _api_->plugin_test(PLUGIN_API_VERSION, MODEL, MEM); \
  if (_rc_<0) \
      return _rc_; \
 } while(0)
@@ -73,7 +77,7 @@ struct plugin_api {
     /* these two fields must always be first, to ensure
        TEST_PLUGIN_API will always work */
     int version;
-    int (*plugin_test)(int api_version, int model);
+    int (*plugin_test)(int api_version, int model, int memsize);
 
     /* lcd */
     void (*lcd_clear_display)(void);

apps/plugins/Makefile

@@ -13,9 +13,10 @@ OC    = sh-elf-objcopy
 FIRMWARE = ../../firmware
 
 INCLUDES = -I$(FIRMWARE)/include -I$(FIRMWARE)/export -I$(FIRMWARE)/common -I$(FIRMWARE)/drivers -I..
-CFLAGS = -O -W -Wall -m1 -nostdlib -ffreestanding -Wstrict-prototypes $(INCLUDES) $(TARGET) $(EXTRA_DEFINES)
+CFLAGS = -O -W -Wall -m1 -nostdlib -ffreestanding -Wstrict-prototypes $(INCLUDES) $(TARGET) $(EXTRA_DEFINES) -DMEM=${MEM}
 
-LINKFILE = plugin.lds
+LDS := plugin.lds
+LINKFILE := $(OBJDIR)/pluginlink.lds
 
 SRC := $(wildcard *.c)
 ROCKS := $(SRC:%.c=$(OBJDIR)/%.rock)
@@ -41,5 +42,10 @@ $(OBJDIR)/%.o: %.c  ../plugin.h Makefile
 all: $(ROCKS)
 	@echo done
 
+# MEM should be passed on to this makefile with the chosen memory size given
+# in number of MB
+$(LINKFILE): $(LDS)
+	cat $< | $(CC) -DMEMORYSIZE=$(MEM) $(DEFINES) -E -P - >$@
+
 clean:
 	-rm -f $(ROCKS)

apps/plugins/plugin.lds

@@ -1,8 +1,12 @@
 OUTPUT_FORMAT(elf32-sh)
 
+#define PLUGIN_LENGTH 0x8000
+#define DRAMSIZE (MEMORYSIZE * 0x100000) - PLUGIN_LENGTH
+#define PLUGIN_ORIGIN (0x09000000 + (DRAMSIZE))
+
 MEMORY
 {
-   PLUGIN_RAM   : ORIGIN = 0x091f8000, LENGTH = 0x8000
+   PLUGIN_RAM : ORIGIN = PLUGIN_ORIGIN, LENGTH = PLUGIN_LENGTH
 }
 
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