[PATCH] boot: fdt: Turn all addresses and sizes into u64

[Marek Vasut]

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 at denx.de>
---
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Matthias Schiffer <matthias.schiffer at ew.tq-group.com>
Cc: Simon Glass <sjg at chromium.org>
Cc: Tom Rini <trini at konsulko.com>
---
 boot/image-fdt.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/boot/image-fdt.c b/boot/image-fdt.c
index 2b92bdaff16..f09716cba30 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;
-- 
2.43.0