[PATCH v2 3/4] ARM: imx: Use correct U-Boot offset in case of secondary boot from eMMC

18 Oct 2023


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From: Fedor Ross fedor.ross@ifm.com
In case of a secondary image boot from the user area of an eMMC device,
the correct offset must be calculated. The offset is fused in the fuse
IMG_CNTN_SET1_OFFSET of the i.MX8M Nano and Plus. The calculation of the
offset is described in the reference manual (IMX8MNRM Rev. 2, 07/2022
and IMX8MPRM Rev. 1, 06/2021):
The fuse IMG_CNTN_SET1_OFFSET (0x490[22:19]) is defined as follows:

Secondary boot is disabled if fuse value is bigger than 10,
n = fuse value bigger than 10.
n == 0: Offset = 4MB
n == 2: Offset = 1MB
Others & n <= 10 : Offset = 1MB*2^n

Signed-off-by: Fedor Ross fedor.ross@ifm.com
Signed-off-by: Marek Vasut marex@denx.de
Applied to u-boot-imx, master, thanks !
Best regards,
Stefano Babic
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