Hi,
On 10/11/24 17:31, Patrick Delaunay wrote:
Move the stm32mp1 data cache reconfiguration after the lmb init call board_r::initr_lmb to allow parsing of the reserved region with no-map tag.
After this patch the DDR is not fully mapped up to arch_early_init_r() call, only the relocation region is mapped, but it is enough for the first board_r initialization phases; later, when arch_early_init_r() is called, the LMB is already initialized and the function lmb_is_reserved_flags() function is functional, this LMB function is called in the weak function dram_bank_mmu_setup() when dcache_enable() is executed.
Without this change, as LMB is not initialized when it is used in dram_bank_mmu_setup, the OP-TEE region is mapped cache-able by U-Boot and we have some firewall violation since "LMB memory map global and persistent" series.
Fixes: ed17a33fed29 ("lmb: make LMB memory map persistent and global") Signed-off-by: Patrick Delaunay patrick.delaunay@foss.st.com
arch/arm/mach-stm32mp/Kconfig | 2 ++ arch/arm/mach-stm32mp/stm32mp1/cpu.c | 7 +++++++ 2 files changed, 9 insertions(+)
Applied to u-boot-stm/master, thanks!
Regards Patrick