On 11/9/21 16:46, Tom Rini wrote:
On Tue, Nov 09, 2021 at 03:46:00PM +0100, Heinrich Schuchardt wrote:

Booting Ubuntu Impish showed the following output:

     relocaddr   = 0x00000000fff60000

     Loading Ramdisk to fa118000, end fffff19d ...

The initrd is overwriting the U-Boot binary. Booting fails.

There is no need to copy the initrd from $ramdisk_addr_r.
Set init_high = ~0UL to use zero copy. Do the same for the device tree.

Same for the devicetree.

Signed-off-by: Heinrich Schuchardt <heinrich.schucha...@canonical.com>
---
v2:
        Don't copy fdt either.
---
  include/configs/sifive-unmatched.h | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/include/configs/sifive-unmatched.h 
b/include/configs/sifive-unmatched.h
index f68d7d7676..69a4eb2f2a 100644
--- a/include/configs/sifive-unmatched.h
+++ b/include/configs/sifive-unmatched.h
@@ -59,6 +59,8 @@
        "name=system,size=-,bootable,type=${type_guid_gpt_system};"
#define CONFIG_EXTRA_ENV_SETTINGS \
+       "fdt_high=0xffffffffffffffff\0" \
+       "initrd_high=0xffffffffffffffff\0" \
        "kernel_addr_r=0x84000000\0" \
        "fdt_addr_r=0x88000000\0" \
        "scriptaddr=0x88100000\0" \

I know I'm doing this out of order, but I'm going to repeat myself here
too.  You cannot disable device tree relocation.  I cannot count the
number of hours that have been wasted because of this mis-feature due to
misalignment of the device tree or overwriting of the device tree and
then U-Boot not fixing it because it was told not to, and then people
and projects wasting countless hours over it.  It's why checkpatch.pl
throws out an ERROR on this now.  I didn't yell even more loudly
previously at riscv because as it was missing the arch_lmb portion to
avoid overwriting U-Boot at run-time, it still was a problem.  But
that's been fixed.  So, no.  NAK.

Why should the devicetree relocated?
This should never have been enabled on RISC-V.

Best regards

Heinrich

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