* Copyright (C) 2005-2009 Samsung Electronics
* Kyungmin Park <kyungmin.park@samsung.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
PAGE_4K = 4096,
};
+static unsigned int density_mask;
+
#define ONENAND_PAGES_PER_BLOCK 64
-#define onenand_block_address(block) (block)
#define onenand_sector_address(page) (page << 2)
#define onenand_buffer_address() ((1 << 3) << 8)
-#define onenand_bufferram_address(block) (0)
+
+static inline int onenand_block_address(int block)
+{
+ /* Device Flash Core select, NAND Flash Block Address */
+ if (block & density_mask)
+ return ONENAND_DDP_CHIP1 | (block ^ density_mask);
+
+ return block;
+}
+
+static inline int onenand_bufferram_address(int block)
+{
+ /* Device BufferRAM Select */
+ if (block & density_mask)
+ return ONENAND_DDP_CHIP1;
+
+ return ONENAND_DDP_CHIP0;
+}
static inline uint16_t onenand_readw(uint32_t addr)
{
static enum onenand_spl_pagesize onenand_spl_get_geometry(void)
{
- uint32_t dev_id, density;
+ unsigned int dev_id, density, size;
if (!onenand_readw(ONENAND_REG_TECHNOLOGY)) {
dev_id = onenand_readw(ONENAND_REG_DEVICE_ID);
if (density < ONENAND_DEVICE_DENSITY_4Gb)
return PAGE_2K;
- if (dev_id & ONENAND_DEVICE_IS_DDP)
+ if (dev_id & ONENAND_DEVICE_IS_DDP) {
+ size = onenand_readw(ONENAND_REG_DATA_BUFFER_SIZE);
+ density_mask = 1 << (18 + density - ffs(size));
return PAGE_2K;
+ }
}
return PAGE_4K;
return 0;
}
+#ifdef CONFIG_SPL_UBI
+/* Temporary storage for non page aligned and non page sized reads. */
+static u8 scratch_buf[PAGE_4K];
+
+/**
+ * onenand_spl_read_block - Read data from physical eraseblock into a buffer
+ * @block: Number of the physical eraseblock
+ * @offset: Data offset from the start of @peb
+ * @len: Data size to read
+ * @dst: Address of the destination buffer
+ *
+ * Notes:
+ * @offset + @len are not allowed to be larger than a physical
+ * erase block. No sanity check done for simplicity reasons.
+ */
+int onenand_spl_read_block(int block, int offset, int len, void *dst)
+{
+ int page, read;
+ static int psize;
+
+ if (!psize)
+ psize = onenand_spl_get_geometry();
+
+ /* Calculate the page number */
+ page = offset / psize;
+ /* Offset to the start of a flash page */
+ offset = offset % psize;
+
+ while (len) {
+ /*
+ * Non page aligned reads go to the scratch buffer.
+ * Page aligned reads go directly to the destination.
+ */
+ if (offset || len < psize) {
+ onenand_spl_read_page(block, page,
+ (uint32_t *)scratch_buf, psize);
+ read = min(len, psize - offset);
+ memcpy(dst, scratch_buf + offset, read);
+ offset = 0;
+ } else {
+ onenand_spl_read_page(block, page, dst, psize);
+ read = psize;
+ }
+ page++;
+ len -= read;
+ dst += read;
+ }
+ return 0;
+}
+#endif
+
void onenand_spl_load_image(uint32_t offs, uint32_t size, void *dst)
{
uint32_t *addr = (uint32_t *)dst;
- uint32_t total_pages;
+ uint32_t to_page;
uint32_t block;
uint32_t page, rpage;
enum onenand_spl_pagesize pagesize;
* pulling further unwanted functions into the SPL.
*/
if (pagesize == 2048) {
- total_pages = DIV_ROUND_UP(size, 2048);
page = offs / 2048;
+ to_page = page + DIV_ROUND_UP(size, 2048);
} else {
- total_pages = DIV_ROUND_UP(size, 4096);
page = offs / 4096;
+ to_page = page + DIV_ROUND_UP(size, 4096);
}
- for (; page <= total_pages; page++) {
+ for (; page <= to_page; page++) {
block = page / ONENAND_PAGES_PER_BLOCK;
rpage = page & (ONENAND_PAGES_PER_BLOCK - 1);
ret = onenand_spl_read_page(block, rpage, addr, pagesize);
- if (ret) {
- total_pages += ONENAND_PAGES_PER_BLOCK;
+ if (ret)
page += ONENAND_PAGES_PER_BLOCK - 1;
- } else {
+ else
addr += pagesize / 4;
- }
}
}