smpinterface fix: missing rampZ-write for atmega1284p

Since atmega1284p has 128kiB of flash and because SPM addresses bytes,
the usual 16bit addresses are not sufficient enough.
Althought "bootloader__do_spm" already supports 3byte adresses (r11-r13),
the write of r11 into rampZ was missing in the device-depended
maschine codepart.

This patch exchanges the already designed placeholder "NOP" with
an out-opcode writing r11 into rampZ.

Signed-off-by: Stephan Baerwolf <stephan.baerwolf@tu-ilmenau.de>

diff --git a/firmware/spminterface.h b/firmware/spminterface.h
index 9c3e3d2..b367f92 100644 (file)
--- a/firmware/spminterface.h
+++ b/firmware/spminterface.h
@@ -262,12 +262,12 @@ const uint16_t bootloader__do_spm[17] PROGMEM = {0x0000, 0x2dec, 0x2dfd, 0xb6b7,
 
 
 #elif defined (__AVR_ATmega164A__) || defined (__AVR_ATmega164PA__) || defined (__AVR_ATmega324A__) || defined (__AVR_ATmega324PA__) || defined (__AVR_ATmega644A__) || defined (__AVR_ATmega644PA__) || defined (__AVR_ATmega1284__) || defined (__AVR_ATmega1284P__)
-//assume  SPMCR:=SPCSR==0x37, SPMEN==0x0, RWWSRE=0x4, RWWSB=0x6
-const uint16_t bootloader__do_spm[17] PROGMEM = {0x0000, 0x2dec, 0x2dfd, 0xb6b7, 0xfcb0, 0xcffd, 0xbf27, 0x95e8, 0xb6b7,
+//assume  SPMCR:=SPCSR==0x37, SPMEN==0x0, RWWSRE=0x4, RWWSB=0x6 and rampZ=0x3b
+const uint16_t bootloader__do_spm[17] PROGMEM = {0xbebb, 0x2dec, 0x2dfd, 0xb6b7, 0xfcb0, 0xcffd, 0xbf27, 0x95e8, 0xb6b7,
                                                 0xfcb0, 0xcffd, 0xe121, 0xb6b7, 0xfcb6, 0xcff4, 0x9508, 0xFFFF};
 /*
 00001826 <bootloader__do_spm>:
-    1826:      00 00           nop
+    1826:      bb be           out     0x3b,r11        ; rampZ=r11; (rampZ is at IO 0x3b)
     1828:      ec 2d           mov     r30, r12
     182a:      fd 2d           mov     r31, r13