From 01548afc43770020cfebecc4a62cfa0d8b05517e Mon Sep 17 00:00:00 2001 From: Holger Brunck Date: Mon, 14 Jul 2025 13:16:51 +0200 Subject: [PATCH] arm: fix lmb region reservation when PRAM is defined PRAM usage is not taken into account when reserving lmb for ARM architecture, this means that predefined PRAM region is marked as reserved by the architecture and cannot be used by other users. Signed-off-by: Holger Brunck --- lib/lmb.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/lib/lmb.c b/lib/lmb.c index e5a0677e3f9..e3a1761e6d1 100644 --- a/lib/lmb.c +++ b/lib/lmb.c @@ -8,6 +8,7 @@ #include #include +#include #include #include #include @@ -538,6 +539,7 @@ static void lmb_reserve_uboot_region(void) int bank; ulong end, bank_end; phys_addr_t rsv_start; + ulong pram = 0; rsv_start = gd->start_addr_sp - CONFIG_STACK_SIZE; end = gd->ram_top; @@ -548,6 +550,11 @@ static void lmb_reserve_uboot_region(void) */ debug("## Current stack ends at 0x%08lx ", (ulong)rsv_start); +#ifdef CFG_PRAM + pram = env_get_ulong("pram", 10, CFG_PRAM); + pram = pram << 10; /* size is in kB */ +#endif + for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) { if (!gd->bd->bi_dram[bank].size || rsv_start < gd->bd->bi_dram[bank].start) @@ -560,7 +567,8 @@ static void lmb_reserve_uboot_region(void) if (bank_end > end) bank_end = end - 1; - lmb_reserve(rsv_start, bank_end - rsv_start + 1, LMB_NOOVERWRITE); + lmb_reserve(rsv_start, bank_end - rsv_start - pram + 1, + LMB_NOOVERWRITE); if (gd->flags & GD_FLG_SKIP_RELOC) lmb_reserve((phys_addr_t)(uintptr_t)_start, -- 2.47.2