diff options
Diffstat (limited to 'arch/arm/kernel/relocate_kernel.S')
| -rw-r--r-- | arch/arm/kernel/relocate_kernel.S | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/arch/arm/kernel/relocate_kernel.S b/arch/arm/kernel/relocate_kernel.S index 7baadae7cb2..062c111c572 100644 --- a/arch/arm/kernel/relocate_kernel.S +++ b/arch/arm/kernel/relocate_kernel.S @@ -7,6 +7,23 @@ .globl relocate_new_kernel relocate_new_kernel: + /* Move boot params back to where the kernel expects them */ + + ldr r0,kexec_boot_params_address + teq r0,#0 + beq 8f + + ldr r1,kexec_boot_params_copy + mov r6,#KEXEC_BOOT_PARAMS_SIZE/4 +7: + ldr r5,[r1],#4 + str r5,[r0],#4 + subs r6,r6,#1 + bne 7b + +8: + /* Boot params moved, now go on with the kernel */ + ldr r0,kexec_indirection_page ldr r1,kexec_start_address @@ -50,7 +67,7 @@ relocate_new_kernel: mov lr,r1 mov r0,#0 ldr r1,kexec_mach_type - mov r2,#0 + ldr r2,kexec_boot_params_address mov pc,lr .globl kexec_start_address @@ -65,6 +82,16 @@ kexec_indirection_page: kexec_mach_type: .long 0x0 + /* phy addr where new kernel will expect to find boot params */ + .globl kexec_boot_params_address +kexec_boot_params_address: + .long 0x0 + + /* phy addr where old kernel put a copy of orig boot params */ + .globl kexec_boot_params_copy +kexec_boot_params_copy: + .long 0x0 + relocate_new_kernel_end: .globl relocate_new_kernel_size |