zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/boot/common/src/uboot/fs/jffs2/compr_lzma.c b/boot/common/src/uboot/fs/jffs2/compr_lzma.c
new file mode 100644
index 0000000..db67e4d
--- /dev/null
+++ b/boot/common/src/uboot/fs/jffs2/compr_lzma.c
@@ -0,0 +1,128 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ * JFFS2 wrapper to the LZMA C SDK
+ *
+ */
+
+#include <linux/lzma.h>
+//#include "compr.h"
+
+#ifdef __KERNEL__
+ //static DEFINE_MUTEX(deflate_mutex);
+#endif
+
+CLzmaEncHandle *p;
+Byte propsEncoded[LZMA_PROPS_SIZE];
+SizeT propsSize = sizeof(propsEncoded);
+
+STATIC void lzma_free_workspace(void)
+{
+ LzmaEnc_Destroy(p, &lzma_alloc, &lzma_alloc);
+}
+
+STATIC int lzma_alloc_workspace(CLzmaEncProps *props)
+{
+ if ((p = (CLzmaEncHandle *)LzmaEnc_Create(&lzma_alloc)) == NULL)
+ {
+ PRINT_ERROR("Failed to allocate lzma deflate workspace\n");
+ return -ENOMEM;
+ }
+
+ if (LzmaEnc_SetProps(p, props) != SZ_OK)
+ {
+ lzma_free_workspace();
+ return -1;
+ }
+
+ if (LzmaEnc_WriteProperties(p, propsEncoded, &propsSize) != SZ_OK)
+ {
+ lzma_free_workspace();
+ return -1;
+ }
+
+ return 0;
+}
+
+STATIC int jffs2_lzma_compress(unsigned char *data_in, unsigned char *cpage_out,
+ uint32_t *sourcelen, uint32_t *dstlen)
+{
+ SizeT compress_size = (SizeT)(*dstlen);
+ int ret;
+
+ #ifdef __KERNEL__
+ //mutex_lock(&deflate_mutex);
+ #endif
+
+ ret = LzmaEnc_MemEncode(p, cpage_out, &compress_size, data_in, *sourcelen,
+ 0, NULL, &lzma_alloc, &lzma_alloc);
+
+ #ifdef __KERNEL__
+ //mutex_unlock(&deflate_mutex);
+ #endif
+
+ if (ret != SZ_OK)
+ return -1;
+
+ *dstlen = (uint32_t)compress_size;
+
+ return 0;
+}
+
+int jffs2_lzma_decompress(unsigned char *data_in, unsigned char *cpage_out,
+ uint32_t srclen, uint32_t destlen)
+{
+ int ret;
+ SizeT dl = (SizeT)destlen;
+ SizeT sl = (SizeT)srclen;
+ ELzmaStatus status;
+
+ ret = LzmaDecode(cpage_out, &dl, data_in, &sl, propsEncoded,
+ propsSize, LZMA_FINISH_ANY, &status, &lzma_alloc);
+
+ if (ret != SZ_OK || status == LZMA_STATUS_NOT_FINISHED || dl != (SizeT)destlen)
+ return -1;
+
+ return 0;
+}
+#if 0
+static struct jffs2_compressor jffs2_lzma_comp = {
+ .priority = JFFS2_LZMA_PRIORITY,
+ .name = "lzma",
+ .compr = JFFS2_COMPR_LZMA,
+ .compress = &jffs2_lzma_compress,
+ .decompress = &jffs2_lzma_decompress,
+ .disabled = 0,
+};
+#endif
+int jffs2_lzma_init(void)
+{
+ int ret;
+ CLzmaEncProps props;
+ LzmaEncProps_Init(&props);
+
+ props.dictSize = LZMA_BEST_DICT(0x2000);
+ props.level = LZMA_BEST_LEVEL;
+ props.lc = LZMA_BEST_LC;
+ props.lp = LZMA_BEST_LP;
+ props.pb = LZMA_BEST_PB;
+ props.fb = LZMA_BEST_FB;
+
+ ret = lzma_alloc_workspace(&props);
+ if (ret < 0)
+ return ret;
+
+ //ret = jffs2_register_compressor(&jffs2_lzma_comp);
+ if (ret)
+ lzma_free_workspace();
+
+ return ret;
+}
+
+void jffs2_lzma_exit(void)
+{
+ //jffs2_unregister_compressor(&jffs2_lzma_comp);
+ lzma_free_workspace();
+}