diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-31 10:17:21 -0400 |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-31 16:35:36 -0400 |
commit | 00be0f305fa69adb9f9d7b9447283b862b853e9e (patch) | |
tree | eb08ba26308be2c77fd79571d11a00acb0e031a2 /arch/mips/kernel/relocate_kernel.S | |
parent | 1065932fcb73ca188a497d8853a1a00422ce6c62 (diff) |
[MIPS] Kexec: Fix several 64-bit bugs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/relocate_kernel.S')
-rw-r--r-- | arch/mips/kernel/relocate_kernel.S | 78 |
1 files changed, 40 insertions, 38 deletions
diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S index a3f0d00c1334..87481f916a61 100644 --- a/arch/mips/kernel/relocate_kernel.S +++ b/arch/mips/kernel/relocate_kernel.S | |||
@@ -14,67 +14,69 @@ | |||
14 | #include <asm/stackframe.h> | 14 | #include <asm/stackframe.h> |
15 | #include <asm/addrspace.h> | 15 | #include <asm/addrspace.h> |
16 | 16 | ||
17 | .globl relocate_new_kernel | 17 | LEAF(relocate_new_kernel) |
18 | relocate_new_kernel: | 18 | PTR_L s0, kexec_indirection_page |
19 | 19 | PTR_L s1, kexec_start_address | |
20 | PTR_L s0, kexec_indirection_page | ||
21 | PTR_L s1, kexec_start_address | ||
22 | 20 | ||
23 | process_entry: | 21 | process_entry: |
24 | PTR_L s2, (s0) | 22 | PTR_L s2, (s0) |
25 | PTR_ADD s0, s0, SZREG | 23 | PTR_ADD s0, s0, SZREG |
26 | 24 | ||
27 | /* destination page */ | 25 | /* destination page */ |
28 | and s3, s2, 0x1 | 26 | and s3, s2, 0x1 |
29 | beq s3, zero, 1f | 27 | beq s3, zero, 1f |
30 | and s4, s2, ~0x1 /* store destination addr in s4 */ | 28 | and s4, s2, ~0x1 /* store destination addr in s4 */ |
31 | move a0, s4 | 29 | move a0, s4 |
32 | b process_entry | 30 | b process_entry |
33 | 31 | ||
34 | 1: | 32 | 1: |
35 | /* indirection page, update s0 */ | 33 | /* indirection page, update s0 */ |
36 | and s3, s2, 0x2 | 34 | and s3, s2, 0x2 |
37 | beq s3, zero, 1f | 35 | beq s3, zero, 1f |
38 | and s0, s2, ~0x2 | 36 | and s0, s2, ~0x2 |
39 | b process_entry | 37 | b process_entry |
40 | 38 | ||
41 | 1: | 39 | 1: |
42 | /* done page */ | 40 | /* done page */ |
43 | and s3, s2, 0x4 | 41 | and s3, s2, 0x4 |
44 | beq s3, zero, 1f | 42 | beq s3, zero, 1f |
45 | b done | 43 | b done |
46 | 1: | 44 | 1: |
47 | /* source page */ | 45 | /* source page */ |
48 | and s3, s2, 0x8 | 46 | and s3, s2, 0x8 |
49 | beq s3, zero, process_entry | 47 | beq s3, zero, process_entry |
50 | and s2, s2, ~0x8 | 48 | and s2, s2, ~0x8 |
51 | li s6, (1 << PAGE_SHIFT) / SZREG | 49 | li s6, (1 << PAGE_SHIFT) / SZREG |
52 | 50 | ||
53 | copy_word: | 51 | copy_word: |
54 | /* copy page word by word */ | 52 | /* copy page word by word */ |
55 | REG_L s5, (s2) | 53 | REG_L s5, (s2) |
56 | REG_S s5, (s4) | 54 | REG_S s5, (s4) |
57 | INT_ADD s4, s4, SZREG | 55 | PTR_ADD s4, s4, SZREG |
58 | INT_ADD s2, s2, SZREG | 56 | PTR_ADD s2, s2, SZREG |
59 | INT_SUB s6, s6, 1 | 57 | LONG_SUB s6, s6, 1 |
60 | beq s6, zero, process_entry | 58 | beq s6, zero, process_entry |
61 | b copy_word | 59 | b copy_word |
62 | b process_entry | 60 | b process_entry |
63 | 61 | ||
64 | done: | 62 | done: |
65 | /* jump to kexec_start_address */ | 63 | /* jump to kexec_start_address */ |
66 | j s1 | 64 | j s1 |
65 | END(relocate_new_kernel) | ||
67 | 66 | ||
68 | .globl kexec_start_address | ||
69 | kexec_start_address: | 67 | kexec_start_address: |
70 | .long 0x0 | 68 | EXPORT(kexec_start_address) |
69 | PTR 0x0 | ||
70 | .size kexec_start_address, PTRSIZE | ||
71 | 71 | ||
72 | .globl kexec_indirection_page | ||
73 | kexec_indirection_page: | 72 | kexec_indirection_page: |
74 | .long 0x0 | 73 | EXPORT(kexec_indirection_page) |
74 | PTR 0 | ||
75 | .size kexec_indirection_page, PTRSIZE | ||
75 | 76 | ||
76 | relocate_new_kernel_end: | 77 | relocate_new_kernel_end: |
77 | 78 | ||
78 | .globl relocate_new_kernel_size | ||
79 | relocate_new_kernel_size: | 79 | relocate_new_kernel_size: |
80 | .long relocate_new_kernel_end - relocate_new_kernel | 80 | EXPORT(relocate_new_kernel_size) |
81 | PTR relocate_new_kernel_end - relocate_new_kernel | ||
82 | .size relocate_new_kernel_size, PTRSIZE | ||