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authorMaxime Ripard <maxime.ripard@free-electrons.com>2017-02-27 18:22:09 +0100
committerJagan Teki <jagan@amarulasolutions.com>2017-04-07 11:23:46 +0530
commitadc706b2fef764d359f1049e94d971b13250735a (patch)
tree1969643839b10773adc365576b98a69973fa4309 /drivers/mtd
parent5fe4c9f4d27835b03f2e07230af90dec121f89cd (diff)
mtd: sunxi: Change U-Boot offset
The default U-Boot offset for the Allwinner SoCs was set to 32kB. This was probably to try to maintain some compatibility with the current image that we build for the MMC where the U-Boot binary is also located at a 32kB offset. However, this causes a number of issues. The first one is that it prevents us from using a backup SPL entirely, which is troublesome in case where the first would be corrupt (especially on MLC which have a higher number of bitflips). We also cannot use the original MMC image on the NAND, because we need to prepare the SPL image to include the ECCs and randomizer settings, which reduces the interest of setting it at that particular offset. It also prevents us from upgrading and flashing the U-Boot and SPLs independantly, since it's very likely that it will fall in the same erase block. Since that default wasn't used by any board, change it for 8MB, which will be in an erase block of its own, all the erase blocks being multiple of two. The highest erase block size we encountered is 4MB, which means that in this particular setup, the first and second erase blocks will be for the SPL and its backup, and the third for U-Boot. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Tom Rini <trini@konsulko.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 7b5449a4c0..dbb39649ab 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -128,7 +128,7 @@ config SYS_NAND_U_BOOT_LOCATIONS
config SYS_NAND_U_BOOT_OFFS
hex "Location in NAND to read U-Boot from"
- default 0x8000 if NAND_SUNXI
+ default 0x800000 if NAND_SUNXI
depends on SYS_NAND_U_BOOT_LOCATIONS
help
Set the offset from the start of the nand where u-boot should be