From: Marcelo Tosatti Date: Mon, 23 Jan 2006 15:57:06 +0000 (-0200) Subject: [PATCH] powerpc/8xx: last two 8MB D-TLB entries are incorrectly set X-Git-Tag: v2.6.16-rc3~67^2~20 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ea4807de7b2c5c903380ba2c2e7150bee942f42;p=linux-2.6 [PATCH] powerpc/8xx: last two 8MB D-TLB entries are incorrectly set The last two 8MB TLB entries are being incorrectly set by initial_mmu on 8xx. The first entry is written with the same virtual/physical address, which renders it invalid: BDI>rms 792 0x00001e00 BDI>rms 824 1 BDI>rds 824 SPR 824 : 0xc08000c0 -1065353024 BDI>rds 825 SPR 825 : 0xc0800de0 -1065349664 BDI>rds 826 SPR 826 : 0x00000000 0 And the second entry, in addition, does not have its TLB index set correctly. Signed-off-by: Marcelo Tosatti Signed-off-by: Paul Mackerras --- diff --git a/arch/ppc/kernel/head_8xx.S b/arch/ppc/kernel/head_8xx.S index 3e6ca7f584..c1e89ad068 100644 --- a/arch/ppc/kernel/head_8xx.S +++ b/arch/ppc/kernel/head_8xx.S @@ -810,13 +810,16 @@ initial_mmu: mtspr SPRN_MD_TWC, r9 li r11, MI_BOOTINIT /* Create RPN for address 0 */ addis r11, r11, 0x0080 /* Add 8M */ - mtspr SPRN_MD_RPN, r8 + mtspr SPRN_MD_RPN, r11 + + addi r10, r10, 0x0100 + mtspr SPRN_MD_CTR, r10 addis r8, r8, 0x0080 /* Add 8M */ mtspr SPRN_MD_EPN, r8 mtspr SPRN_MD_TWC, r9 addis r11, r11, 0x0080 /* Add 8M */ - mtspr SPRN_MD_RPN, r8 + mtspr SPRN_MD_RPN, r11 #endif /* Since the cache is enabled according to the information we