Some Samsung SoCs, s3c64xx, s5pc100 has own OneNAND controller
and different OneNAND access method.
To support this, each board has own init and set onenand_read_page for it.

Signed-off-by: Kyungmin Park <kyungmin.p...@samsung.com>
---
diff --git a/onenand_ipl/onenand_read.c b/onenand_ipl/onenand_read.c
index 8d0df81..47b60b3 100644
--- a/onenand_ipl/onenand_read.c
+++ b/onenand_ipl/onenand_read.c
@@ -110,6 +110,14 @@ static void onenand_generic_init(int *page_is_4KiB, int 
*page)
                *page_is_4KiB = 1;
 }
 
+static int __onenand_board_init(int *page_is_4KiB, int *page)
+{
+       return 0;
+}
+
+int onenand_board_init(int *page_is_4KiB, int *page)
+       __attribute__((weak, alias("__onenand_board_init")));
+
 /**
  * onenand_read_block - Read CONFIG_SYS_MONITOR_LEN from begining
  *                      of OneNAND, skipping bad blocks
@@ -120,11 +128,13 @@ int onenand_read_block(unsigned char *buf)
        int block, nblocks;
        int page = CONFIG_ONENAND_START_PAGE, offset = 0;
        int pagesize, erasesize, erase_shift;
-       int page_is_4KiB = 0;
+       int page_is_4KiB = 0, ret;
 
        onenand_read_page = generic_onenand_read_page;
 
-       onenand_generic_init(&page_is_4KiB, &page);
+       ret = onenand_board_init(&page_is_4KiB, &page);
+       if (ret)
+               onenand_generic_init(&page_is_4KiB, &page);
 
        if (page_is_4KiB) {
                pagesize = 4096; /* OneNAND has 4KiB pagesize */
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