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arm: stm32mp: Fix board_get_usable_ram_top() again

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Do not access gd->ram_size and assume this is actual valid RAM size. Since commit
777aaaa706 ("common/memsize.c: Fix get_effective_memsize() to check for overflow")
the RAM size may be less than gd->ram_size , call get_effective_memsize() to get
the limited value instead.

The aforementioned commit makes STM32MP15xx boards with 1 GiB of DRAM
at 0xc0000000 hang on boot, which is a grave defect.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
This commit is contained in:
Marek Vasut 2023-01-05 02:22:22 +01:00 committed by Patrick Delaunay
parent 8d6cbf5e6b
commit a2e0b041d6
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mach-stm32mp/dram_init.c
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@ -51,7 +51,7 @@ phys_size_t board_get_usable_ram_top(phys_size_t total_size)
/* found enough not-reserved memory to relocated U-Boot */
lmb_init(&lmb);
lmb_add(&lmb, gd->ram_base, gd->ram_size);
lmb_add(&lmb, gd->ram_base, get_effective_memsize());
boot_fdt_add_mem_rsv_regions(&lmb, (void *)gd->fdt_blob);
/* add 8M for reserved memory for display, fdt, gd,... */
size = ALIGN(SZ_8M + CONFIG_SYS_MALLOC_LEN + total_size, MMU_SECTION_SIZE),