/* * This is a generic machine_kexec function suitable at least for * non-OpenFirmware embedded platforms. * It merely copies the image relocation code to the control page and * jumps to it. * A platform specific function may just call this one.
*/ void default_machine_kexec(struct kimage *image)
{ externconstunsignedint relocate_new_kernel_size; unsignedlong page_list; unsignedlong reboot_code_buffer, reboot_code_buffer_phys;
relocate_new_kernel_t rnk;
/* Interrupts aren't acceptable while we reboot */
local_irq_disable();
/* mask each interrupt so we are in a more sane state for the
* kexec kernel */
machine_kexec_mask_interrupts();
page_list = image->head;
/* we need both effective and real address here */
reboot_code_buffer =
(unsignedlong)page_address(image->control_code_page);
reboot_code_buffer_phys = virt_to_phys((void *)reboot_code_buffer);
/* copy our kernel relocation code to the control code page */
memcpy((void *)reboot_code_buffer, relocate_new_kernel,
relocate_new_kernel_size);
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