The external NAND boot code currently does not handle bad blocks
correctly on 2k NAND flashes. This patch adds a barebox_update
handler for external NAND boot which embeds a Bad block table in
the flashed image. The boot code will skip bad blocks found in
this bad block table then.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The i.MX external NAND boot code checks for a bad block every
page, which is wrong. Instead, check for a bad block at the
beginning of each block.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
We cannot jump to SDRAM unconditionally in imx*_barebox_boot_nand_external.
When we really boot from NOR flash the binary is not yet copied to SDRAM.
Instead, let the return value of imx_barebox_boot_nand_external() indicate
whether we really boot from NAND and only jump to SDRAM in this case.
Otherwise just continue to the normal SoC specific entry.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Most i.MX boards can use the imx*_barebox_entry functions. The remaining
(i.MX21, i.MX6) use hardcoded base addresses.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
i.MX will get SoC specific entry points for barebox. To find the
correct one we have to call these from the SoC specific
imx*_barebox_boot_nand_external functions.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The pattern for i.MX boards starting in external NAND boot mode is always
the same:
- Check if we are running in NFC address space, if not call
board_init_lowlevel_return()
- copy binary to link address
- execute relocated binary
- call imx_nand_load_image()
Add a common function for this to make the board code easier.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Sascha Hauer