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

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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>
This commit is contained in:
Marek Vasut 2023-03-02 04:08:22 +01:00 committed by Simon Glass
parent 98d114e75c
commit b363da1c26
1 changed files with 2 additions and 1 deletions
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3
cmd/fdt.c
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@ -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 */