add sansa m200v2 support to mkamsboot.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18840 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 52 insertions, 11 deletions

diff --git a/rbutil/mkamsboot/Makefile b/rbutil/mkamsboot/Makefile
index e3d98f03f0..c5f8dd5e51 100644
--- a/rbutil/mkamsboot/Makefile
+++ b/rbutil/mkamsboot/Makefile
@@ -10,8 +10,8 @@ LIBUCL=../../tools/ucl/src/libucl.a
 #
 # If anyone reading this wants to improve this makefile, please do!
 
-BOOTIMAGES = bootimg_clip.o bootimg_e200v2.o
-BOOTHEADERS = bootimg_clip.h bootimg_e200v2.h
+BOOTIMAGES = bootimg_clip.o bootimg_e200v2.o bootimg_m200v2.o
+BOOTHEADERS = bootimg_clip.h bootimg_e200v2.h bootimg_m200v2.h
 
 CLIPFILES = dualboot-clip.o dualboot-clip.elf dualboot-clip.o \
             dualboot-clip.bin bootimg_clip.c bootimg_clip.h
@@ -19,6 +19,9 @@ CLIPFILES = dualboot-clip.o dualboot-clip.elf dualboot-clip.o \
 E200V2FILES = dualboot-e200v2.o dualboot-e200v2.elf dualboot-e200v2.o \
               dualboot-e200v2.bin bootimg_e200v2.c bootimg_e200v2.h
 
+M200V2FILES = dualboot-m200v2.o dualboot-m200v2.elf dualboot-m200v2.o \
+              dualboot-m200v2.bin bootimg_m200v2.c bootimg_m200v2.h              
+              
 all: mkamsboot
 
 $(LIBUCL):
@@ -64,9 +67,26 @@ dualboot-e200v2.bin: dualboot-e200v2.elf
 bootimg_e200v2.c bootimg_e200v2.h: dualboot-e200v2.bin bin2c
 	./bin2c dualboot-e200v2.bin bootimg_e200v2
 
-bootimg_e200v2.o: bootimg_e200v2.c
-	gcc -c -o bootimg_e200v2.o bootimg_e200v2.c
+# M200V2    
+    
+bootimg_m200v2.o: bootimg_m200v2.c
+	gcc -c -o bootimg_m200v2.o bootimg_m200v2.c
 
+dualboot-m200v2.o: dualboot.S
+	arm-elf-gcc -DSANSA_M200V2 -c -o dualboot-m200v2.o dualboot.S
+
+dualboot-m200v2.elf: dualboot-m200v2.o
+	arm-elf-ld -e 0 -Ttext=0 -o dualboot-m200v2.elf dualboot-m200v2.o
+
+dualboot-m200v2.bin: dualboot-m200v2.elf
+	arm-elf-objcopy -O binary dualboot-m200v2.elf dualboot-m200v2.bin
+
+bootimg_m200v2.c bootimg_m200v2.h: dualboot-m200v2.bin bin2c
+	./bin2c dualboot-m200v2.bin bootimg_m200v2
+
+bootimg_m200v2.o: bootimg_m200v2.c
+	gcc -c -o bootimg_m200v2.o bootimg_m200v2.c
+        
 # Rules for the ucl unpack function
 nrv2e_d8.o: nrv2e_d8.S
 	arm-elf-gcc -DPURE_THUMB -c -o nrv2e_d8.o nrv2e_d8.S
@@ -91,4 +111,4 @@ bin2c: bin2c.c
 clean:
 	rm -f mkamsboot mkamsboot.o nrv2e_d8.o nrv2e_d8.elf nrv2e_d8.bin *~ \
 	bin2c uclimg.c uclimg.h uclimg.o \
-	$(BOOTIMAGES) $(CLIPFILES) $(E200V2FILES)
+	$(BOOTIMAGES) $(CLIPFILES) $(E200V2FILES) $(M200V2FILES)
diff --git a/rbutil/mkamsboot/dualboot.S b/rbutil/mkamsboot/dualboot.S
index 8a1caa6f63..1713017060 100644
--- a/rbutil/mkamsboot/dualboot.S
+++ b/rbutil/mkamsboot/dualboot.S
@@ -5,7 +5,7 @@
  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
  *                     \/            \/     \/    \/            \/
- * $Id:$
+ * $Id$
  *
  * Copyright (C) 2008 Rafaël Carré
  *
@@ -77,6 +77,8 @@ uclcopy:
         orr   r1, r1, #(1<<16)
         str   r1, [r0]
 
+        
+#ifndef SANSA_M200V2  /* this doesnt work for m200 */         
         /* we check A3 unconditionally of the model because it seems to be */
         /* either hold, either usb on every model */
 
@@ -87,6 +89,7 @@ uclcopy:
 
         cmp   r1, #0
         bne   boot_of
+#endif
 
         /* here are model specific tests, for dual boot without a computer */
 
@@ -108,6 +111,22 @@ uclcopy:
 
         cmp   r1, #0             /* C6 = #0 means button pressed */
         beq   boot_of
+#elif defined(SANSA_M200V2)
+.set row, (1<<5) /* 4 or <<5 or <<6 */
+        /* enable output on A3-A5 */
+        /* set keyscan row A0-A3 */
+        ldr   r0, =GPIOA
+        mov   r1, #row
+        str   r1, [r0, #0x400]
+        str   r1, [r0, #(4*row)]
+
+.set col, (1<<0) /* 0 or 1, 2, 3 */
+        /* read keyscan column A0-A3 */
+        ldr   r2, [r0, #(4*col)]
+
+        /* check value read (compare to 0!) */
+        cmp   r2, #0
+        beq   boot_of        /* for beginning we jump if button select is not pressed */
 #else
         #error No target-specific key check defined!
 #endif
diff --git a/rbutil/mkamsboot/mkamsboot.c b/rbutil/mkamsboot/mkamsboot.c
index cfa9e37746..e4b6e09782 100644
--- a/rbutil/mkamsboot/mkamsboot.c
+++ b/rbutil/mkamsboot/mkamsboot.c
@@ -89,6 +89,7 @@ execution to the uncompressed firmware.
 #include "uclimg.h"
 #include "bootimg_clip.h"
 #include "bootimg_e200v2.h"
+#include "bootimg_m200v2.h"
 
 /* Win32 compatibility */
 #ifndef O_BINARY
@@ -126,7 +127,7 @@ static const unsigned char* bootloaders[] =
     bootimg_clip,
     NULL,
     bootimg_e200v2,
-    NULL,
+    bootimg_m200v2,
     NULL
 };
 
@@ -136,7 +137,7 @@ static const int bootloader_sizes[] =
     sizeof(bootimg_clip),
     0,
     sizeof(bootimg_e200v2),
-    0,
+    sizeof(bootimg_m200v2),
     0
 };
 
@@ -373,6 +374,7 @@ int main(int argc, char* argv[])
     int fw_version;
     int totalsize;
     unsigned char* p;
+    uint32_t checksum;
 
     fprintf(stderr,"mkamsboot v" VERSION " - (C) Dave Chapman and Rafaël Carré 2008\n");
     fprintf(stderr,"This is free software; see the source for copying conditions.  There is NO\n");
@@ -395,9 +397,10 @@ int main(int argc, char* argv[])
         return 1;
     }
 
-    /* TODO: Do some more sanity checks on the OF image */
+    /* TODO: Do some more sanity checks on the OF image. Some images (like m200v2) dont have a checksum at the end, only padding (0xdeadbeef). */
+    checksum = get_uint32le(buf + len - 4); 
+    if (checksum != 0xefbeadde && checksum != calc_checksum(buf, len - 4)) {
 
-    if (get_uint32le(buf + len - 4) != calc_checksum(buf, len - 4)) {
         fprintf(stderr,"[ERR]  Whole file checksum failed - %s\n",infile);
         return 1;
     }
@@ -420,7 +423,6 @@ int main(int argc, char* argv[])
     if (bootloaders[model] == NULL) {
         fprintf(stderr,"[ERR]  Unsupported model - \"%s\"\n",model_names[model]);
         free(buf);
-        free(rb_unpacked);
         return 1;
     }