[PATCH 00/11] mach-snapdragon: various improvements for newer boards

[Neil Armstrong]

On 09/08/2024 01:59, Caleb Connolly wrote:
> Supporting the newer SM8550 and SM8650 SoCs unfortunately requires a
> bump in complexity for us. Qualcomm changed a lot about how the memory
> map is handed over to the "kernel", adding many holes, not mapping
> certain regions, and adding regions with 0 size. The SM8650 HDK has a
> whopping 14 memory regions, some as small as 44k.
> 
> Supporting this properly has proven to be a bit of a headache, but I
> think this implementation is "pretty good".
> 
> In addition, we set a valid fallback fdt_addr_r in the U-Boot
> environment, allocate a buffer for fastboot, and set the loadaddr
> variable too.
> 
> board_fdt_blob_setup() is refactored for readability and potential
> future expansion (e.g. if supporting multi-dtb FIT becomes desirable).
> 
> Finally, a function is proposed to allow for mapping new memory regions
> at runtime, and the cmd-db driver makes use of it to map itself, since
> SM8650 boards don't seem to include it in their memory map.
> 
> Tested on SM8650 HDK, SDM845 OnePlus 6, SM6115 RB2, SM8250 RB5.
> 
> ---
> Caleb Connolly (10):
>        mach-snapdragon: refactor board_fdt_blob_setup()
>        mach-snapdragon: parse memory ourselves
>        mach-snapdragon: set serial number
>        mach-snapdragon: allocate fastboot buffer dynamically
>        mach-snapdragon: populate fallback FDT
>        mach-snapdragon: set loadaddr
>        armv8: mmu: add a way to map additional regions
>        soc: qcom: cmd-db: use strncmp() instead of memcmp()
>        soc: qcom: cmd-db: map cmd-db region
>        qcom_defconfig: bump CONFIG_NR_DRAM_BANKS
> 
> Neil Armstrong (1):
>        mach-snapdragon: use 1MiB for get_page_table_size()
> 
>   arch/arm/cpu/armv8/cache_v8.c    |  25 +++++
>   arch/arm/include/asm/system.h    |  10 ++
>   arch/arm/mach-snapdragon/board.c | 203 ++++++++++++++++++++++++++++++++++-----
>   configs/qcom_defconfig           |   1 +
>   drivers/soc/qcom/cmd-db.c        |  11 ++-
>   5 files changed, 221 insertions(+), 29 deletions(-)
> ---
> change-id: 20240809-b4-snapdragon-improvements-fd6d714a7fbd
> base-commit: a2ce853383b18a2cf920268ee341f2585a11adef
> 
> // Caleb (they/them)
> 

Thanks for posting those :-)

Please add my:
Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>

I'll rebase my tree and test it ASAP !

Neil