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cmd: spl: provide address and size of prepared FDT in environment

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Writing prepared FDT to persistent storage should be possible in
scripts. Create environment variables containing address and size
of the updated FDT. Scripts can use these variables after running
'spl export fdt ...' command to write the new blob to persistent
storage.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Anatolij Gustschin
2017-08-17 21:01:48 +02:00
committed by Tom Rini
parent 195dc23185
commit 767cb74a00
2 changed files with 11 additions and 1 deletions
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5
cmd/spl.c
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@@ -118,6 +118,11 @@ static int spl_export(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
case SPL_EXPORT_FDT:
printf("Argument image is now in RAM: 0x%p\n",
(void *)images.ft_addr);
env_set_addr("fdtargsaddr", images.ft_addr);
env_set_hex("fdtargslen", fdt_totalsize(images.ft_addr));
if (fdt_totalsize(images.ft_addr) >
CONFIG_CMD_SPL_WRITE_SIZE)
puts("WARN: FDT size > CMD_SPL_WRITE_SIZE\n");
break;
#endif
case SPL_EXPORT_ATAGS: