diff options
Diffstat (limited to 'arch/ppc/kernel/machine_kexec.c')
| -rw-r--r-- | arch/ppc/kernel/machine_kexec.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/arch/ppc/kernel/machine_kexec.c b/arch/ppc/kernel/machine_kexec.c deleted file mode 100644 index a469ba438cb..00000000000 --- a/arch/ppc/kernel/machine_kexec.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * machine_kexec.c - handle transition of Linux booting another kernel - * Copyright (C) 2002-2003 Eric Biederman <ebiederm@xmission.com> - * - * GameCube/ppc32 port Copyright (C) 2004 Albert Herranz - * - * This source code is licensed under the GNU General Public License, - * Version 2. See the file COPYING for more details. - */ - -#include <linux/mm.h> -#include <linux/kexec.h> -#include <linux/delay.h> -#include <linux/reboot.h> -#include <asm/pgtable.h> -#include <asm/pgalloc.h> -#include <asm/mmu_context.h> -#include <asm/io.h> -#include <asm/hw_irq.h> -#include <asm/cacheflush.h> -#include <asm/machdep.h> - -typedef NORET_TYPE void (*relocate_new_kernel_t)( - unsigned long indirection_page, - unsigned long reboot_code_buffer, - unsigned long start_address) ATTRIB_NORET; - -extern const unsigned char relocate_new_kernel[]; -extern const unsigned int relocate_new_kernel_size; - -void machine_shutdown(void) -{ - if (ppc_md.machine_shutdown) - ppc_md.machine_shutdown(); -} - -void machine_crash_shutdown(struct pt_regs *regs) -{ - if (ppc_md.machine_crash_shutdown) - ppc_md.machine_crash_shutdown(); -} - -/* - * Do what every setup is needed on image and the - * reboot code buffer to allow us to avoid allocations - * later. - */ -int machine_kexec_prepare(struct kimage *image) -{ - if (ppc_md.machine_kexec_prepare) - return ppc_md.machine_kexec_prepare(image); - /* - * Fail if platform doesn't provide its own machine_kexec_prepare - * implementation. - */ - return -ENOSYS; -} - -void machine_kexec_cleanup(struct kimage *image) -{ - if (ppc_md.machine_kexec_cleanup) - ppc_md.machine_kexec_cleanup(image); -} - -/* - * Do not allocate memory (or fail in any way) in machine_kexec(). - * We are past the point of no return, committed to rebooting now. - */ -NORET_TYPE void machine_kexec(struct kimage *image) -{ - if (ppc_md.machine_kexec) - ppc_md.machine_kexec(image); - else { - /* - * Fall back to normal restart if platform doesn't provide - * its own kexec function, and user insist to kexec... - */ - machine_restart(NULL); - } - for(;;); -} - -/* - * 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 machine_kexec_simple(struct kimage *image) -{ - unsigned long page_list; - unsigned long reboot_code_buffer, reboot_code_buffer_phys; - relocate_new_kernel_t rnk; - - /* Interrupts aren't acceptable while we reboot */ - local_irq_disable(); - - page_list = image->head; - - /* we need both effective and real address here */ - reboot_code_buffer = - (unsigned long)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); - - flush_icache_range(reboot_code_buffer, - reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE); - printk(KERN_INFO "Bye!\n"); - - /* now call it */ - rnk = (relocate_new_kernel_t) reboot_code_buffer; - (*rnk)(page_list, reboot_code_buffer_phys, image->start); -} - |