diff options
| author | Pali Rohár <pali@kernel.org> | 2022-04-06 14:18:18 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2022-04-21 12:31:36 +0200 |
| commit | 8b3d7ecdfec30d63684d86bd76632929b72d8a84 (patch) | |
| tree | c58aab7bc8c7670ff6547b18c9ebbb2dca71e680 /drivers/ddr/imx/imx8ulp/ddr_init.c | |
| parent | 7001ea3ec408cbc801fc21054927ca1f4840ff79 (diff) | |
arm: mvebu: Add support for reading LD0 and LD1 eFuse
Armada 385 contains 64 lines of HD eFuse and 2 lines of LD eFuse. HD eFuse
is used for secure boot and each line is 64 bits long + 1 lock bit. LD
eFuse lines are 256 bits long + 1 lock bit. LD 0 line is reserved for
Marvell Internal Use and LD 1 line is for General Purpose Data. U-Boot
already contains HD eFuse reading and programming support.
This patch implements LD eFuse reading support. LD 0 line is mapped to
U-Boot fuse bank 64 and LD 1 line to fuse bank 65.
LD 0 Marvell Internal Use line seems that was burned in factory with some
data and can be read by U-Boot fuse command:
=> fuse read 64 0 9
LD 1 General Purpose Data line is by default empty and can be read by
U-Boot fuse command:
=> fuse read 65 0 9
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Diffstat (limited to 'drivers/ddr/imx/imx8ulp/ddr_init.c')
0 files changed, 0 insertions, 0 deletions