Dear Gerd Hoffmann,
In message 1413887467-18799-1-git-send-email-kraxel@redhat.com you wrote:
base[0] is saved, but never restored.
Test case: Start u-boot in qemu, using vexpress-a9 emulation. qemu places the fdt at the start of ram, as a service for the guest. Trying to pick it up there by setting fdt_addr accordingly fails because the fdt magic cookie is gone (zeroed out) after calling get_ram_size.
Signed-off-by: Gerd Hoffmann kraxel@redhat.com
common/memsize.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
When submitting an updated version of the patch, you are supposed to mark it as such in the Subject, and to provide a change log; please see [1] for details.
[1] http://www.denx.de/wiki/view/U-Boot/Patches#Sending_updated_patch_versions
It seems I cannot reproduce the problem here.
Test 1: Board = TQM5200S running U-Boot 2014.10-rc2-00274-gf9860cf
=> md 0 4 00000000: bc193d2c 0783d3c7 18688dbf c3c7c30f ..=,.....h...... => mw 0 27051956 => reset ... => md 0 4 00000000: 27051956 0783d3c7 18688dbf c3c7c30f '..V.....h...... => mm 0 00000000: 27051956 ? deadbeef 00000004: 0783d3c7 ? affeaffe 00000008: 18688dbf ? 27051956 0000000c: c3c7c30f ? deadc0de 00000010: 3d6b3f3d ? . => md 0 4 00000000: deadbeef affeaffe 27051956 deadc0de ........'..V.... => md 0 4 00000000: deadbeef affeaffe 27051956 deadc0de ........'..V....
Test 2: Board = lite5200b running U-Boot 2011.09-00282-gd8fffa0
=> md 0 4 00000000: b75d351d 77fe2cf5 4ba0ebeb 896baaae .]5.w.,.K....k.. => mm 0 00000000: b75d351d ? 12345678 00000004: 77fe2cf5 ? 87654321 00000008: 4ba0ebeb ? 24681357 0000000c: 896baaae ? 86427531 00000010: 53e7f1fe ? . => md 0 4 00000000: 12345678 87654321 24681357 86427531 .4Vx.eC!$h.W.Bu1 => reset ... => md 0 4 00000000: 12345678 87654321 24681357 86427531 .4Vx.eC!$h.W.Bu1
I cannot see any memory corruption. If I understand you correctly, the contents of address 0x00000000 should be overwritten here?
Best regards,
Wolfgang Denk