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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-12 00:55:47 -0400 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-12 00:55:47 -0400 |
commit | e86908614f2c7fec401827e5cefd7a6ea9407f85 (patch) | |
tree | fcb5d9e52422b37bdaf0e647126ebdfc1680f162 /arch/powerpc/mm/slb_low.S | |
parent | 547307420931344a868275bd7ea7a30f117a15a9 (diff) | |
parent | 9b4b8feb962f4b3e74768b7205f1f8f6cce87238 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (408 commits)
[POWERPC] Add memchr() to the bootwrapper
[POWERPC] Implement logging of unhandled signals
[POWERPC] Add legacy serial support for OPB with flattened device tree
[POWERPC] Use 1TB segments
[POWERPC] XilinxFB: Allow fixed framebuffer base address
[POWERPC] XilinxFB: Add support for custom screen resolution
[POWERPC] XilinxFB: Use pdata to pass around framebuffer parameters
[POWERPC] PCI: Add 64-bit physical address support to setup_indirect_pci
[POWERPC] 4xx: Kilauea defconfig file
[POWERPC] 4xx: Kilauea DTS
[POWERPC] 4xx: Add AMCC Kilauea eval board support to platforms/40x
[POWERPC] 4xx: Add AMCC 405EX support to cputable.c
[POWERPC] Adjust TASK_SIZE on ppc32 systems to 3GB that are capable
[POWERPC] Use PAGE_OFFSET to tell if an address is user/kernel in SW TLB handlers
[POWERPC] 85xx: Enable FP emulation in MPC8560 ADS defconfig
[POWERPC] 85xx: Killed <asm/mpc85xx.h>
[POWERPC] 85xx: Add cpm nodes for 8541/8555 CDS
[POWERPC] 85xx: Convert mpc8560ads to the new CPM binding.
[POWERPC] mpc8272ads: Remove muram from the CPM reg property.
[POWERPC] Make clockevents work on PPC601 processors
...
Fixed up conflict in Documentation/powerpc/booting-without-of.txt manually.
Diffstat (limited to 'arch/powerpc/mm/slb_low.S')
-rw-r--r-- | arch/powerpc/mm/slb_low.S | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index cd1a93d4948c..1328a81a84aa 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S | |||
@@ -57,7 +57,10 @@ _GLOBAL(slb_allocate_realmode) | |||
57 | */ | 57 | */ |
58 | _GLOBAL(slb_miss_kernel_load_linear) | 58 | _GLOBAL(slb_miss_kernel_load_linear) |
59 | li r11,0 | 59 | li r11,0 |
60 | BEGIN_FTR_SECTION | ||
60 | b slb_finish_load | 61 | b slb_finish_load |
62 | END_FTR_SECTION_IFCLR(CPU_FTR_1T_SEGMENT) | ||
63 | b slb_finish_load_1T | ||
61 | 64 | ||
62 | 1: /* vmalloc/ioremap mapping encoding bits, the "li" instructions below | 65 | 1: /* vmalloc/ioremap mapping encoding bits, the "li" instructions below |
63 | * will be patched by the kernel at boot | 66 | * will be patched by the kernel at boot |
@@ -68,13 +71,16 @@ BEGIN_FTR_SECTION | |||
68 | cmpldi r11,(VMALLOC_SIZE >> 28) - 1 | 71 | cmpldi r11,(VMALLOC_SIZE >> 28) - 1 |
69 | bgt 5f | 72 | bgt 5f |
70 | lhz r11,PACAVMALLOCSLLP(r13) | 73 | lhz r11,PACAVMALLOCSLLP(r13) |
71 | b slb_finish_load | 74 | b 6f |
72 | 5: | 75 | 5: |
73 | END_FTR_SECTION_IFCLR(CPU_FTR_CI_LARGE_PAGE) | 76 | END_FTR_SECTION_IFCLR(CPU_FTR_CI_LARGE_PAGE) |
74 | _GLOBAL(slb_miss_kernel_load_io) | 77 | _GLOBAL(slb_miss_kernel_load_io) |
75 | li r11,0 | 78 | li r11,0 |
79 | 6: | ||
80 | BEGIN_FTR_SECTION | ||
76 | b slb_finish_load | 81 | b slb_finish_load |
77 | 82 | END_FTR_SECTION_IFCLR(CPU_FTR_1T_SEGMENT) | |
83 | b slb_finish_load_1T | ||
78 | 84 | ||
79 | 0: /* user address: proto-VSID = context << 15 | ESID. First check | 85 | 0: /* user address: proto-VSID = context << 15 | ESID. First check |
80 | * if the address is within the boundaries of the user region | 86 | * if the address is within the boundaries of the user region |
@@ -122,7 +128,13 @@ _GLOBAL(slb_miss_kernel_load_io) | |||
122 | #endif /* CONFIG_PPC_MM_SLICES */ | 128 | #endif /* CONFIG_PPC_MM_SLICES */ |
123 | 129 | ||
124 | ld r9,PACACONTEXTID(r13) | 130 | ld r9,PACACONTEXTID(r13) |
131 | BEGIN_FTR_SECTION | ||
132 | cmpldi r10,0x1000 | ||
133 | END_FTR_SECTION_IFSET(CPU_FTR_1T_SEGMENT) | ||
125 | rldimi r10,r9,USER_ESID_BITS,0 | 134 | rldimi r10,r9,USER_ESID_BITS,0 |
135 | BEGIN_FTR_SECTION | ||
136 | bge slb_finish_load_1T | ||
137 | END_FTR_SECTION_IFSET(CPU_FTR_1T_SEGMENT) | ||
126 | b slb_finish_load | 138 | b slb_finish_load |
127 | 139 | ||
128 | 8: /* invalid EA */ | 140 | 8: /* invalid EA */ |
@@ -188,7 +200,7 @@ _GLOBAL(slb_allocate_user) | |||
188 | * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET | 200 | * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET |
189 | */ | 201 | */ |
190 | slb_finish_load: | 202 | slb_finish_load: |
191 | ASM_VSID_SCRAMBLE(r10,r9) | 203 | ASM_VSID_SCRAMBLE(r10,r9,256M) |
192 | rldimi r11,r10,SLB_VSID_SHIFT,16 /* combine VSID and flags */ | 204 | rldimi r11,r10,SLB_VSID_SHIFT,16 /* combine VSID and flags */ |
193 | 205 | ||
194 | /* r3 = EA, r11 = VSID data */ | 206 | /* r3 = EA, r11 = VSID data */ |
@@ -213,7 +225,7 @@ BEGIN_FW_FTR_SECTION | |||
213 | END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES) | 225 | END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES) |
214 | #endif /* CONFIG_PPC_ISERIES */ | 226 | #endif /* CONFIG_PPC_ISERIES */ |
215 | 227 | ||
216 | ld r10,PACASTABRR(r13) | 228 | 7: ld r10,PACASTABRR(r13) |
217 | addi r10,r10,1 | 229 | addi r10,r10,1 |
218 | /* use a cpu feature mask if we ever change our slb size */ | 230 | /* use a cpu feature mask if we ever change our slb size */ |
219 | cmpldi r10,SLB_NUM_ENTRIES | 231 | cmpldi r10,SLB_NUM_ENTRIES |
@@ -259,3 +271,20 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES) | |||
259 | crclr 4*cr0+eq /* set result to "success" */ | 271 | crclr 4*cr0+eq /* set result to "success" */ |
260 | blr | 272 | blr |
261 | 273 | ||
274 | /* | ||
275 | * Finish loading of a 1T SLB entry (for the kernel linear mapping) and return. | ||
276 | * We assume legacy iSeries will never have 1T segments. | ||
277 | * | ||
278 | * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9 | ||
279 | */ | ||
280 | slb_finish_load_1T: | ||
281 | srdi r10,r10,40-28 /* get 1T ESID */ | ||
282 | ASM_VSID_SCRAMBLE(r10,r9,1T) | ||
283 | rldimi r11,r10,SLB_VSID_SHIFT_1T,16 /* combine VSID and flags */ | ||
284 | li r10,MMU_SEGSIZE_1T | ||
285 | rldimi r11,r10,SLB_VSID_SSIZE_SHIFT,0 /* insert segment size */ | ||
286 | |||
287 | /* r3 = EA, r11 = VSID data */ | ||
288 | clrrdi r3,r3,SID_SHIFT_1T /* clear out non-ESID bits */ | ||
289 | b 7b | ||
290 | |||