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powerpc/8xx: Fixing issue with CONFIG_PIN_TLB

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Activating CONFIG_PIN_TLB is supposed to pin the IMMR and the first
three 8Mbytes pages.  But the setting of MD_CTR to a pinnable entry was
missing before the pinning of the third 8Mb page.  As the index is
decremented module 28 (MD_RSV4D is set) after every DTLB update, the
third 8Mbytes page was not pinned.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
LEROY Christophe 2013-09-24 10:18:39 +02:00 committed by Scott Wood
parent 9e0967572e
commit 4e591f3c0a
1 changed files with 3 additions and 0 deletions
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3
arch/powerpc/kernel/head_8xx.S
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@ -858,6 +858,9 @@ initial_mmu:
addis r11, r11, 0x0080 /* Add 8M */ addis r11, r11, 0x0080 /* Add 8M */
mtspr SPRN_MD_RPN, r11 mtspr SPRN_MD_RPN, r11
addi r10, r10, 0x0100
mtspr SPRN_MD_CTR, r10
addis r8, r8, 0x0080 /* Add 8M */ addis r8, r8, 0x0080 /* Add 8M */
mtspr SPRN_MD_EPN, r8 mtspr SPRN_MD_EPN, r8
mtspr SPRN_MD_TWC, r9 mtspr SPRN_MD_TWC, r9