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-rw-r--r--board/sixnet/sixnet.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/board/sixnet/sixnet.c b/board/sixnet/sixnet.c
index e33925c..4025b47 100644
--- a/board/sixnet/sixnet.c
+++ b/board/sixnet/sixnet.c
@@ -24,6 +24,7 @@
#include <common.h>
#include <config.h>
+#include <jffs2/jffs2.h>
#include <mpc8xx.h>
#include <net.h> /* for eth_init() */
#include <rtc.h>
@@ -602,3 +603,70 @@ long int initdram(int board_type)
return (size_sdram);
}
+
+#ifdef CFG_JFFS_CUSTOM_PART
+
+static struct part_info part;
+
+#define jffs2_block(i) \
+ ((struct jffs2_unknown_node*)(CFG_JFFS2_BASE + (i) * 65536))
+
+struct part_info* jffs2_part_info(int part_num)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+ bd_t *bd = gd->bd;
+ char* s;
+ int i;
+ int bootnor = 0; /* assume booting from NAND flash */
+
+ if (part_num != 0)
+ return 0; /* only support one partition */
+
+ if (part.usr_priv == (void*)1)
+ return &part; /* already have part info */
+
+ memset(&part, 0, sizeof(part));
+
+ if (nand_dev_desc[0].ChipID == NAND_ChipID_UNKNOWN)
+ bootnor = 1;
+ else if (bd->bi_flashsize < 0x800000)
+ bootnor = 0;
+ else for (i = 0; !bootnor && i < 4; ++i) {
+ /* boot from NOR if JFFS2 info in any of
+ * first 4 erase blocks
+ */
+
+ if (jffs2_block(i)->magic == JFFS2_MAGIC_BITMASK)
+ bootnor = 1;
+ }
+
+ if (bootnor) {
+ /* no NAND flash or boot in NOR, use NOR flash */
+ part.offset = (unsigned char *)CFG_JFFS2_BASE;
+ part.size = CFG_JFFS2_SIZE;
+ }
+ else {
+ char readcmd[60];
+
+ /* boot info in NAND flash, get and use copy in RAM */
+
+ /* override info from environment if present */
+ s = getenv("fsaddr");
+ part.offset = s ? (void *)simple_strtoul(s, NULL, 16)
+ : (void *)CFG_JFFS2_RAMBASE;
+ s = getenv("fssize");
+ part.size = s ? simple_strtoul(s, NULL, 16)
+ : CFG_JFFS2_RAMSIZE;
+
+ /* read from nand flash */
+ sprintf(readcmd, "nand read.jffs2 %x 0 %x",
+ (uint32_t)part.offset, part.size);
+ run_command(readcmd, 0);
+ }
+
+ part.erasesize = 0; /* unused */
+ part.usr_priv=(void*)1; /* ready */
+
+ return &part;
+}
+#endif /* ifdef CFG_JFFS_CUSTOM_PART */