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| author | Michal Simek <monstr@monstr.eu> | 2009-06-22 12:31:55 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2009-07-27 07:39:54 +0200 |
| commit | ea3fd1466f81a851452bf7f34ccb9b5058e4793c (patch) | |
| tree | f691b023dee02e38a828b91f91904b1a0e07cffb | |
| parent | microblaze: Not to clear r7 after copying DTB to kernel (diff) | |
| download | linux-ea3fd1466f81a851452bf7f34ccb9b5058e4793c.tar.xz linux-ea3fd1466f81a851452bf7f34ccb9b5058e4793c.zip | |
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: Michal Simek <monstr@monstr.eu>
| -rw-r--r-- | arch/microblaze/kernel/head.S | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/microblaze/kernel/head.S b/arch/microblaze/kernel/head.S index 3c4d4a2803e2..e41c6ce2a7be 100644 --- a/arch/microblaze/kernel/head.S +++ b/arch/microblaze/kernel/head.S @@ -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) |