Pranav Sanwal 3aebac5a75 arm64: versal2: Populate DRAM banks before page table size calculation ...

Move DRAM bank detection from fdtdec to custom implementation to
ensure memory banks are populated before get_page_table_size() is
called during MMU initialization.

The current fdtdec-based approach populates gd->bd->bi_dram[] too
late in the boot sequence, causing get_page_table_size() to be
called with unpopulated DRAM information. This prevents dynamic
page table sizing based on actual memory configuration.

Parse /memory nodes in dram_init() to fill versal2_mem_map[]
early enough for MMU setup. Supports up to
CONFIG_NR_DRAM_BANKS (36) non-contiguous banks with high memory
regions (>4GB) and use __weak get_page_table_size implementation
to estimate page table size based on the populated DRAM banks.

Signed-off-by: Pranav Sanwal <pranav.sanwal@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/20260129120021.1328653-3-pranav.sanwal@amd.com

2026-02-13 08:16:24 +01:00

..

versal2

arm64: versal2: Populate DRAM banks before page table size calculation

2026-02-13 08:16:24 +01:00

common

arm64: versal2: Add support for AMD Versal Gen 2

2024-06-17 16:02:29 +02:00