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MIPS: generic: Support booting with built-in or appended DTB 

The plat_get_fdt() checked that the kernel was booted using UHI before
reading the 'fw_passed_dtb' variable. However, this variable is also set
when the DT has been appended, or when it has been built into the kernel.

Support these usecases by removing the UHI check.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Paul Cercueil 2020-09-06 21:29:28 +02:00 committed by Thomas Bogendoerfer
parent 13a0ea28e8
commit 323690d23b
1 changed files with 4 additions and 5 deletions
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9
arch/mips/generic/init.c
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@ -39,12 +39,11 @@ void __init *plat_get_fdt(void)
/* Already set up */
return (void *)fdt;
if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_passed_dtb)) {
if (fw_passed_dtb && !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.
* 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_passed_dtb;