diff options
| author | Simona Toaca <[email protected]> | 2026-04-30 11:33:30 +0300 |
|---|---|---|
| committer | Fabio Estevam <[email protected]> | 2026-05-15 17:31:39 -0300 |
| commit | c9a8f673e0b8dc30bd575faae34e0b1f1e42a706 (patch) | |
| tree | ca53a827acb55d2c7c61ef746b08b30021136267 /drivers | |
| parent | 84a17fea21f8877a668f535145a105db4ccf791e (diff) | |
imx9: Add support for saving DDR training data to NVM
DDR training data can be saved to NVM and be available
to OEI at boot time, which will trigger QuickBoot flow.
U-Boot only checks for data integrity (CRC32), while
OEI is in charge of authentication when it tries to
load the data from NVM.
On iMX95 A0/A1, 'authentication' is done via another
CRC32. On the other SoCs, authentication is done by
using ELE to check the MAC stored in the ddrphy_qb_state
structure.
Supported platforms: iMX94, iMX95, iMX952 (using OEI)
Supported storage types: eMMC, SD, SPI flash.
Signed-off-by: Viorel Suman <[email protected]>
Signed-off-by: Ye Li <[email protected]>
Signed-off-by: Simona Toaca <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ddr/imx/imx9/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ddr/imx/imx9/Kconfig b/drivers/ddr/imx/imx9/Kconfig index b953bca4f06..7b3dbf53dff 100644 --- a/drivers/ddr/imx/imx9/Kconfig +++ b/drivers/ddr/imx/imx9/Kconfig @@ -29,4 +29,11 @@ config SAVED_DRAM_TIMING_BASE after DRAM is trained, need to save the dram related timming info into memory for low power use. +config QB_SAVED_STATE_BASE + hex "Define the base address for saved QuickBoot state" + default 0x8fe00000 + help + Once DRAM is trained, the resulted training info is + saved into memory in order to be reachable from U-Boot. + endmenu |