From: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date: Thu, 2 Mar 2023 03:08:22 +0000 (+0100)
Subject: cmd: fdt: Map address returned from fdt get addr to sysmem
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=b363da1c26c96a831d3ffcbd1d4997ec3d340009;p=u-boot.git

cmd: fdt: Map address returned from fdt get addr to sysmem

The address returned from 'fdt get addr' command must be mapped
into sysmem, as this is a working FDT. Access to this address
without mapping it would lead to crash e.g. in sandbox.

The following command triggers the crash:
"
./u-boot -Dc 'fdt addr $fdtcontroladdr ; fdt get addr var / compatible ; md $var'
"

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
---

diff --git a/cmd/fdt.c b/cmd/fdt.c
index bc19303159..f2576ab4b3 100644
--- a/cmd/fdt.c
+++ b/cmd/fdt.c
@@ -468,7 +468,8 @@ static int do_fdt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 					/* Get address */
 					char buf[19];
 
-					snprintf(buf, sizeof(buf), "0x%p", nodep);
+					snprintf(buf, sizeof(buf), "0x%lx",
+						 (ulong)map_to_sysmem(nodep));
 					env_set(var, buf);
 				} else if (subcmd[0] == 's') {
 					/* Get size */