From: Marek Vasut <marex@denx.de>
Date: Sun, 14 Apr 2024 18:37:20 +0000 (+0200)
Subject: boot: fdt: Turn all addresses and sizes into u64
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=16da853114efa97682920356a0eaa6a34270477f;p=u-boot.git

boot: fdt: Turn all addresses and sizes into u64

In case of systems where DRAM bank ends at the edge of 32bit boundary,
start + size calculations would overflow. This happens on STM32MP15xx
with 1 DRAM bank starting at 0xc0000000 and 1 GiB of DRAM. This is a
usual 32bit system DRAM size overflow, fix it by doing all DRAM size
and offset calculations using u64 types. This also covers a case where
a 32bit PAE system might be able to address up to 36bits of DRAM.

Fixes: a4df06e41fa2 ("boot: fdt: Change type of env_get_bootm_low() to phys_addr_t")
Signed-off-by: Marek Vasut <marex@denx.de>
---

diff --git a/boot/image-fdt.c b/boot/image-fdt.c
index 2b92bdaff1..f09716cba3 100644
--- a/boot/image-fdt.c
+++ b/boot/image-fdt.c
@@ -158,13 +158,10 @@ void boot_fdt_add_mem_rsv_regions(struct lmb *lmb, void *fdt_blob)
  */
 int boot_relocate_fdt(struct lmb *lmb, char **of_flat_tree, ulong *of_size)
 {
+	u64	start, size, usable, addr, low, mapsize;
 	void	*fdt_blob = *of_flat_tree;
 	void	*of_start = NULL;
-	phys_addr_t start, size, usable;
 	char	*fdt_high;
-	phys_addr_t addr;
-	phys_addr_t low;
-	phys_size_t mapsize;
 	ulong	of_len = 0;
 	int	bank;
 	int	err;