Commit 9a936a2e authored by Olof Johansson's avatar Olof Johansson Committed by Paul Mackerras

[POWERPC] powerpc: Clear HID0 attention enable on PPC970 at boot time

Clear HID0[en_attn] at CPU init time on PPC970.  Closes CVE-2006-4093.
Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent e5c14ce1
...@@ -76,6 +76,8 @@ _GLOBAL(__setup_cpu_ppc970) ...@@ -76,6 +76,8 @@ _GLOBAL(__setup_cpu_ppc970)
mfspr r0,SPRN_HID0 mfspr r0,SPRN_HID0
li r11,5 /* clear DOZE and SLEEP */ li r11,5 /* clear DOZE and SLEEP */
rldimi r0,r11,52,8 /* set NAP and DPM */ rldimi r0,r11,52,8 /* set NAP and DPM */
li r11,0
rldimi r0,r11,32,31 /* clear EN_ATTN */
mtspr SPRN_HID0,r0 mtspr SPRN_HID0,r0
mfspr r0,SPRN_HID0 mfspr r0,SPRN_HID0
mfspr r0,SPRN_HID0 mfspr r0,SPRN_HID0
......
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