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Add Flex-OneNAND booting support

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Flex-OneNAND is a monolithic integrated circuit with a NAND Flash array
using a NOR Flash interface. This on-chip integration enables system designers
to reduce external system logic and use high-density NAND Flash
in applications that would otherwise have to use more NOR components.

Flex-OneNAND enables users to configure to partition it into SLC and MLC areas
in more flexible way. While MLC area of Flex-OneNAND can be used to store data
that require low reliability and high density, SLC area of Flex-OneNAND
to store data that need high reliability and high performance. Flex-OneNAND
can let users take advantage of storing these two different types of data
into one chip, which is making Flex-OneNAND more cost- and space-effective.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Kyungmin Park 2008-03-17 08:54:06 +09:00 committed by Wolfgang Denk
parent c512389cc4
commit 1bb707c39a
6 changed files with 36 additions and 17 deletions
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6
Makefile
View file

@ -339,10 +339,12 @@ $(U_BOOT_NAND): $(NAND_SPL) $(obj)u-boot.bin $(obj)include/autoconf.mk
cat $(obj)nand_spl/u-boot-spl-16k.bin $(obj)u-boot.bin > $(obj)u-boot-nand.bin
$(ONENAND_IPL): $(VERSION_FILE) $(obj)include/autoconf.mk
$(MAKE) -C onenand_ipl/board/$(BOARDDIR) all
$(MAKE) -C $(obj)onenand_ipl/board/$(BOARDDIR) all
$(U_BOOT_ONENAND): $(ONENAND_IPL) $(obj)u-boot.bin $(obj)include/autoconf.mk
$(MAKE) -C $(obj)onenand_ipl/board/$(BOARDDIR) all
cat $(obj)onenand_ipl/onenand-ipl-2k.bin $(obj)u-boot.bin > $(obj)u-boot-onenand.bin
cat $(obj)onenand_ipl/onenand-ipl-4k.bin $(obj)u-boot.bin > $(obj)u-boot-flexonenand.bin
$(VERSION_FILE):
@( echo -n "#define U_BOOT_VERSION \"U-Boot " ; \
@ -2873,7 +2875,7 @@ clean:
$(obj)board/{integratorap,integratorcp}/u-boot.lds \
$(obj)board/{bf533-ezkit,bf533-stamp,bf537-stamp,bf561-ezkit}/u-boot.lds
@rm -f $(obj)include/bmp_logo.h $(obj)nand_spl/{u-boot-spl,u-boot-spl.map}
@rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl-2k.bin,ipl.map}
@rm -f $(obj)onenand_ipl/onenand-{ipl,ipl.bin,ipl-2k.bin,ipl-4k.bin,ipl.map}
@rm -f $(obj)api_examples/demo $(VERSION_FILE)
@find $(OBJTREE) -type f \
\( -name 'core' -o -name '*.bak' -o -name '*~' \

6
drivers/mtd/onenand/onenand_base.c
View file

@ -1180,6 +1180,12 @@ static int onenand_probe(struct mtd_info *mtd)
if (maf_id != bram_maf_id || dev_id != bram_dev_id)
return -ENXIO;
/* FIXME : Current OneNAND MTD doesn't support Flex-OneNAND */
if (dev_id & (1 << 9)) {
printk("Not yet support Flex-OneNAND\n");
return -ENXIO;
}
/* Flash device information */
onenand_print_device_info(dev_id, 0);
this->device_id = dev_id;

7
onenand_ipl/board/apollon/Makefile
View file

@ -9,7 +9,7 @@ AFLAGS += -DCONFIG_ONENAND_IPL
CFLAGS += -DCONFIG_ONENAND_IPL
OBJCLFAGS += --gap-fill=0x00
SOBJS = start.o low_levelinit.o # _memcpy32.o
SOBJS = start.o low_levelinit.o
COBJS = apollon.o onenand_read.o onenand_boot.o
SRCS := $(addprefix $(obj),$(SOBJS:.o=.S) $(COBJS:.o=.c))
@ -19,13 +19,16 @@ LNDIR := $(OBJTREE)/onenand_ipl/board/$(BOARDDIR)
onenandobj := $(OBJTREE)/onenand_ipl/
ALL = $(onenandobj)onenand-ipl $(onenandobj)onenand-ipl.bin $(onenandobj)onenand-ipl-2k.bin
ALL = $(onenandobj)onenand-ipl $(onenandobj)onenand-ipl.bin $(onenandobj)onenand-ipl-2k.bin $(onenandobj)onenand-ipl-4k.bin
all: $(obj).depend $(ALL)
$(onenandobj)onenand-ipl-2k.bin: $(onenandobj)onenand-ipl
$(OBJCOPY) ${OBJCFLAGS} --pad-to=0x800 -O binary $< $@
$(onenandobj)onenand-ipl-4k.bin: $(onenandobj)onenand-ipl
$(OBJCOPY) ${OBJCFLAGS} --pad-to=0x1000 -O binary $< $@
$(onenandobj)onenand-ipl.bin: $(onenandobj)onenand-ipl
$(OBJCOPY) ${OBJCFLAGS} -O binary $< $@

2
onenand_ipl/onenand_boot.c
View file

@ -60,7 +60,7 @@ void start_oneboot(void)
buf = (uchar *) CFG_LOAD_ADDR;
if (!onenand_read_block(buf, ONENAND_START_BLOCK))
if (!onenand_read_block0(buf))
buf += ONENAND_BLOCK_SIZE;
if (buf == (uchar *)CFG_LOAD_ADDR)

3
onenand_ipl/onenand_ipl.h
View file

@ -23,7 +23,6 @@
#include <linux/mtd/onenand_regs.h>
#define ONENAND_START_BLOCK 0
#define ONENAND_BLOCK_SIZE 2048
#ifndef CFG_PRINTF
@ -40,5 +39,5 @@
#define ONENAND_PAGE_SIZE 2048
extern int onenand_read_block(unsigned char *buf, ulong block);
extern int onenand_read_block0(unsigned char *buf);
#endif

29
onenand_ipl/onenand_read.c
View file

@ -33,8 +33,13 @@
#define onenand_buffer_address() ((1 << 3) << 8)
#define onenand_bufferram_address(block) (0)
#ifdef __HAVE_ARCH_MEMCPY32
extern void *memcpy32(void *dest, void *src, int size);
#endif
/* read a page with ECC */
static inline int onenand_read_page(ulong block, ulong page, u_char *buf)
static inline int onenand_read_page(ulong block, ulong page,
u_char * buf, int pagesize)
{
unsigned long *base;
@ -46,15 +51,15 @@ static inline int onenand_read_page(ulong block, ulong page, u_char *buf)
onenand_writew(onenand_block_address(block),
THIS_ONENAND(ONENAND_REG_START_ADDRESS1));
onenand_writew(onenand_bufferram_address(block),
THIS_ONENAND(ONENAND_REG_START_ADDRESS2));
onenand_writew(onenand_sector_address(page),
THIS_ONENAND(ONENAND_REG_START_ADDRESS8));
onenand_writew(onenand_buffer_address(),
THIS_ONENAND(ONENAND_REG_START_BUFFER));
onenand_writew(onenand_bufferram_address(block),
THIS_ONENAND(ONENAND_REG_START_ADDRESS2));
onenand_writew(ONENAND_INT_CLEAR, THIS_ONENAND(ONENAND_REG_INTERRUPT));
onenand_writew(ONENAND_CMD_READ, THIS_ONENAND(ONENAND_REG_COMMAND));
@ -69,9 +74,9 @@ static inline int onenand_read_page(ulong block, ulong page, u_char *buf)
#ifdef __HAVE_ARCH_MEMCPY32
/* 32 bytes boundary memory copy */
memcpy32(buf, base, ONENAND_PAGE_SIZE);
memcpy32(buf, base, pagesize);
#else
for (offset = 0; offset < (ONENAND_PAGE_SIZE >> 2); offset++) {
for (offset = 0; offset < (pagesize >> 2); offset++) {
value = *(base + offset);
*p++ = value;
}
@ -87,18 +92,22 @@ static inline int onenand_read_page(ulong block, ulong page, u_char *buf)
* onenand_read_block - Read a block data to buf
* @return 0 on success
*/
int onenand_read_block(unsigned char *buf, ulong block)
int onenand_read_block0(unsigned char *buf)
{
int page, offset = 0;
int pagesize = ONENAND_PAGE_SIZE;
/* MLC OneNAND has 4KiB page size */
if (onenand_readw(THIS_ONENAND(ONENAND_REG_TECHNOLOGY)))
pagesize <<= 1;
/* NOTE: you must read page from page 1 of block 0 */
/* read the block page by page*/
for (page = ONENAND_START_PAGE;
page < ONENAND_PAGES_PER_BLOCK; page++) {
onenand_read_page(block, page, buf + offset);
offset += ONENAND_PAGE_SIZE;
onenand_read_page(0, page, buf + offset, pagesize);
offset += pagesize;
}
return 0;