On Sun, 24 Nov 2024 at 12:18, Caleb Connolly caleb.connolly@linaro.org wrote:
It is possible to derive the memory map for a Qualcomm platform from the SMEM shared memory region. The memory map is populated by the preloader.
Introduce support for parsing this data and using it to populate U-Boot's memory map. Since we aren't yet sure if this will work for every platform, it is not yet used in all cases, if U-Boot is booted with an internal FDT which has the memory map defined, this will be used instead.
If the FDT comes from ABL, or we're using an internal FDT with no memory map defined, then U-Boot will try to use SMEM. This should remove the need to define the memory map statically in a U-Boot overlay DT for most boards.
Signed-off-by: Caleb Connolly caleb.connolly@linaro.org
arch/arm/mach-snapdragon/board.c | 2 +- arch/arm/mach-snapdragon/dram.c | 106 +++++++++++++++++++++++++++++++++--
comment again:
arch/arm/mach-snapdragon/qcom-priv.h | 4 +- 3 files changed, 106 insertions(+), 6 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org