sh: bzip2/lzma zImage support.

This plugs in bzip2 and lzma support for zImages.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -18,6 +18,8 @@ config SUPERH
 	select HAVE_DMA_API_DEBUG
 	select HAVE_PERF_COUNTERS
 	select HAVE_KERNEL_GZIP
+	select HAVE_KERNEL_BZIP2
+	select HAVE_KERNEL_LZMA
 	select RTC_LIB
 	select GENERIC_ATOMIC64
 	help

arch/sh/boot/compressed/.gitignore

@@ -0,0 +1 @@
+vmlinux.bin.*

arch/sh/boot/compressed/Makefile

@@ -5,6 +5,7 @@
 #
 
 targets		:= vmlinux vmlinux.bin vmlinux.bin.gz \
+		   vmlinux.bin.bz2 vmlinux.bin.lzma \
 		   head_$(BITS).o misc_$(BITS).o piggy.o
 
 OBJECTS = $(obj)/head_$(BITS).o $(obj)/misc_$(BITS).o $(obj)/cache.o
@@ -38,10 +39,22 @@ $(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE
 $(obj)/vmlinux.bin: vmlinux FORCE
 	$(call if_changed,objcopy)
 
-$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
+vmlinux.bin.all-y := $(obj)/vmlinux.bin
+
+$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
 	$(call if_changed,gzip)
+$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
+	$(call if_changed,bzip2)
+$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
+	$(call if_changed,lzma)
+
+suffix-$(CONFIG_KERNEL_GZIP)	:= gz
+suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
+suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
 
 OBJCOPYFLAGS += -R .empty_zero_page
 
-$(obj)/piggy.o: $(obj)/piggy.S $(obj)/vmlinux.bin.gz FORCE
-	$(call if_changed,as_o_S)
+LDFLAGS_piggy.o := -r --format binary --oformat $(ld-bfd) -T
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE
+	$(call if_changed,ld)

arch/sh/boot/compressed/misc_32.c

@@ -41,12 +41,24 @@ extern int _end;
 static unsigned long free_mem_ptr;
 static unsigned long free_mem_end_ptr;
 
-#define HEAP_SIZE             0x10000
+#ifdef CONFIG_HAVE_KERNEL_BZIP2
+#define HEAP_SIZE	0x400000
+#else
+#define HEAP_SIZE	0x10000
+#endif
 
 #ifdef CONFIG_KERNEL_GZIP
 #include "../../../../lib/decompress_inflate.c"
 #endif
 
+#ifdef CONFIG_KERNEL_BZIP2
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZMA
+#include "../../../../lib/decompress_unlzma.c"
+#endif
+
 #ifdef CONFIG_SH_STANDARD_BIOS
 size_t strlen(const char *s)
 {

arch/sh/boot/compressed/misc_64.c

@@ -40,12 +40,24 @@ extern int _end;
 static unsigned long free_mem_ptr;
 static unsigned long free_mem_end_ptr;
 
-#define HEAP_SIZE             0x10000
+#ifdef CONFIG_HAVE_KERNEL_BZIP2
+#define HEAP_SIZE	0x400000
+#else
+#define HEAP_SIZE	0x10000
+#endif
 
 #ifdef CONFIG_KERNEL_GZIP
 #include "../../../../lib/decompress_inflate.c"
 #endif
 
+#ifdef CONFIG_KERNEL_BZIP2
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZMA
+#include "../../../../lib/decompress_unlzma.c"
+#endif
+
 void puts(const char *s)
 {
 }

arch/sh/boot/compressed/piggy.S

@@ -1,8 +0,0 @@
-	.global	input_len, input_data
-	.data
-input_len:
-	.long	input_data_end - input_data
-input_data:
-	.incbin	"arch/sh/boot/compressed/vmlinux.bin.gz"
-input_data_end:
-	.end

arch/sh/boot/compressed/vmlinux.scr

@@ -0,0 +1,10 @@
+SECTIONS
+{
+  .rodata.compressed : {
+	input_len = .;
+	LONG(input_data_end - input_data) input_data = .;
+	*(.data)
+	output_len = . - 4;
+	input_data_end = .;
+	}
+}