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| author | Marcin Nowakowski <marcin.nowakowski@fungible.com> | 2019-05-13 14:32:43 +0200 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2019-05-13 12:02:47 -0700 |
| commit | 67eebf7213046e65d8fb1f37f5fd10d5fb71e098 (patch) | |
| tree | 158ae7ec45da3912e7ccf0927792278e6d88f756 /arch/mips/generic | |
| parent | e6308b6d35ea706c23a589a8c709fa444ff13e17 (diff) | |
| download | linux-67eebf7213046e65d8fb1f37f5fd10d5fb71e098.tar.gz | |
generic: fix appended dtb support
Appended DTB support is mostly intended to be used on legacy systems, but it is a valid feature that can be enabled for generic platform, which currently doesn't support it - if selected, the appended DTB will be ignored by the platform startup code. During kernel startup, the appended DTB's location is stored in fw_passed_dtb if the init code finds what appears to be a valid DTB. Otherwise (if a0 == -2), a1 is stored in fw_passed_dtb, so either way it will always point to either a user-passed DTB or built-in DTB. Signed-off-by: Marcin Nowakowski <marcin.nowakowski@fungible.com> Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
Diffstat (limited to 'arch/mips/generic')
| -rw-r--r-- | arch/mips/generic/init.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c index a106f8113842..a84475f1924f 100644 --- a/arch/mips/generic/init.c +++ b/arch/mips/generic/init.c @@ -43,14 +43,14 @@ void __init *plat_get_fdt(void) /* Already set up */ return (void *)fdt; - if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_arg1)) { + if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_passed_dtb)) { /* * We booted using the UHI boot protocol, so we have been * provided with the appropriate device tree for the board. * Make use of it & search for any machine struct based upon * the root compatible string. */ - fdt = (void *)fw_arg1; + fdt = (void *)fw_passed_dtb; for_each_mips_machine(check_mach) { match = mips_machine_is_compatible(check_mach, fdt); |