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Commit ea3fd146 authored by Michal Simek's avatar Michal Simek
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microblaze: Clear print messages for DTB passing via r7 



It is necessary to zeroed r7 when r7 points to bad
dtb - this caused that we have correct messages
about compiled-in dtb or passing via r7

Signed-off-by: default avatarMichal Simek <monstr@monstr.eu>
parent a69cb8c4

arch/microblaze/kernel/head.S

+3 −0
Original line number Diff line number Diff line
@@ -62,7 +62,10 @@ ENTRY(_start) 
	beqi	r7, no_fdt_arg			/* NULL pointer?  don't copy */

	lw	r11, r0, r7			/* Does r7 point to a */

	rsubi	r11, r11, OF_DT_HEADER		/* valid FDT? */

	beqi	r11, _prepare_copy_fdt

	or	r7, r0, r0		/* clear R7 when not valid DTB */

	bnei	r11, no_fdt_arg			/* No - get out of here */

_prepare_copy_fdt:

	or	r11, r0, r0 /* incremment */

	ori	r4, r0, TOPHYS(_fdt_start)

	ori	r3, r0, (0x4000 - 4)