diff options
| author | David Howells <dhowells@redhat.com> | 2006-12-05 14:37:56 +0000 |
|---|---|---|
| committer | David Howells <dhowells@warthog.cambridge.redhat.com> | 2006-12-05 14:37:56 +0000 |
| commit | 4c1ac1b49122b805adfa4efc620592f68dccf5db (patch) | |
| tree | 87557f4bc2fd4fe65b7570489c2f610c45c0adcd /arch/mips/kernel/relocate_kernel.S | |
| parent | c4028958b6ecad064b1a6303a6a5906d4fe48d73 (diff) | |
| parent | d916faace3efc0bf19fe9a615a1ab8fa1a24cd93 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
drivers/infiniband/core/iwcm.c
drivers/net/chelsio/cxgb2.c
drivers/net/wireless/bcm43xx/bcm43xx_main.c
drivers/net/wireless/prism54/islpci_eth.c
drivers/usb/core/hub.h
drivers/usb/input/hid-core.c
net/core/netpoll.c
Fix up merge failures with Linus's head and fix new compilation failures.
Signed-Off-By: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/mips/kernel/relocate_kernel.S')
| -rw-r--r-- | arch/mips/kernel/relocate_kernel.S | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/mips/kernel/relocate_kernel.S b/arch/mips/kernel/relocate_kernel.S new file mode 100644 index 00000000000..a3f0d00c133 --- /dev/null +++ b/arch/mips/kernel/relocate_kernel.S @@ -0,0 +1,80 @@ +/* + * relocate_kernel.S for kexec + * Created by <nschichan@corp.free.fr> on Thu Oct 12 17:49:57 2006 + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ + +#include <asm/asm.h> +#include <asm/asmmacro.h> +#include <asm/regdef.h> +#include <asm/page.h> +#include <asm/mipsregs.h> +#include <asm/stackframe.h> +#include <asm/addrspace.h> + + .globl relocate_new_kernel +relocate_new_kernel: + + PTR_L s0, kexec_indirection_page + PTR_L s1, kexec_start_address + +process_entry: + PTR_L s2, (s0) + PTR_ADD s0, s0, SZREG + + /* destination page */ + and s3, s2, 0x1 + beq s3, zero, 1f + and s4, s2, ~0x1 /* store destination addr in s4 */ + move a0, s4 + b process_entry + +1: + /* indirection page, update s0 */ + and s3, s2, 0x2 + beq s3, zero, 1f + and s0, s2, ~0x2 + b process_entry + +1: + /* done page */ + and s3, s2, 0x4 + beq s3, zero, 1f + b done +1: + /* source page */ + and s3, s2, 0x8 + beq s3, zero, process_entry + and s2, s2, ~0x8 + li s6, (1 << PAGE_SHIFT) / SZREG + +copy_word: + /* copy page word by word */ + REG_L s5, (s2) + REG_S s5, (s4) + INT_ADD s4, s4, SZREG + INT_ADD s2, s2, SZREG + INT_SUB s6, s6, 1 + beq s6, zero, process_entry + b copy_word + b process_entry + +done: + /* jump to kexec_start_address */ + j s1 + + .globl kexec_start_address +kexec_start_address: + .long 0x0 + + .globl kexec_indirection_page +kexec_indirection_page: + .long 0x0 + +relocate_new_kernel_end: + + .globl relocate_new_kernel_size +relocate_new_kernel_size: + .long relocate_new_kernel_end - relocate_new_kernel |