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@@ -93,6 +93,54 @@ static int onenand_spl_read_page(uint32_t block, uint32_t page, uint32_t *buf,
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return 0;
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}
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+#ifdef CONFIG_SPL_UBI
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+/* Temporary storage for non page aligned and non page sized reads. */
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+static u8 scratch_buf[PAGE_4K];
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+
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+/**
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+ * onenand_spl_read_block - Read data from physical eraseblock into a buffer
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+ * @block: Number of the physical eraseblock
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+ * @offset: Data offset from the start of @peb
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+ * @len: Data size to read
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+ * @dst: Address of the destination buffer
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+ *
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+ * Notes:
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+ * @offset + @len are not allowed to be larger than a physical
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+ * erase block. No sanity check done for simplicity reasons.
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+ */
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+int onenand_spl_read_block(int block, int offset, int len, void *dst)
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+{
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+ int page, read, psize;
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+
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+ psize = onenand_spl_get_geometry();
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+ /* Calculate the page number */
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+ page = offset / psize;
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+ /* Offset to the start of a flash page */
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+ offset = offset % psize;
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+
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+ while (len) {
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+ /*
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+ * Non page aligned reads go to the scratch buffer.
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+ * Page aligned reads go directly to the destination.
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+ */
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+ if (offset || len < psize) {
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+ onenand_spl_read_page(block, page,
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+ (uint32_t *)scratch_buf, psize);
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+ read = min(len, psize - offset);
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+ memcpy(dst, scratch_buf + offset, read);
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+ offset = 0;
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+ } else {
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+ onenand_spl_read_page(block, page, dst, psize);
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+ read = psize;
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+ }
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+ page++;
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+ len -= read;
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+ dst += read;
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+ }
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+ return 0;
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+}
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+#endif
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+
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void onenand_spl_load_image(uint32_t offs, uint32_t size, void *dst)
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{
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uint32_t *addr = (uint32_t *)dst;
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