diff options
Diffstat (limited to 'arch/ia64/kernel/machine_kexec.c')
| -rw-r--r-- | arch/ia64/kernel/machine_kexec.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c deleted file mode 100644 index 4db9ca144f..0000000000 --- a/arch/ia64/kernel/machine_kexec.c +++ /dev/null @@ -1,163 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * arch/ia64/kernel/machine_kexec.c - * - * Handle transition of Linux booting another kernel - * Copyright (C) 2005 Hewlett-Packard Development Comapny, L.P. - * Copyright (C) 2005 Khalid Aziz <khalid.aziz@hp.com> - * Copyright (C) 2006 Intel Corp, Zou Nan hai <nanhai.zou@intel.com> - */ - -#include <linux/mm.h> -#include <linux/kexec.h> -#include <linux/cpu.h> -#include <linux/irq.h> -#include <linux/efi.h> -#include <linux/numa.h> -#include <linux/mmzone.h> - -#include <asm/efi.h> -#include <asm/numa.h> -#include <asm/mmu_context.h> -#include <asm/setup.h> -#include <asm/delay.h> -#include <asm/meminit.h> -#include <asm/processor.h> -#include <asm/sal.h> -#include <asm/mca.h> - -typedef void (*relocate_new_kernel_t)( - unsigned long indirection_page, - unsigned long start_address, - struct ia64_boot_param *boot_param, - unsigned long pal_addr) __noreturn; - -struct kimage *ia64_kimage; - -struct resource efi_memmap_res = { - .name = "EFI Memory Map", - .start = 0, - .end = 0, - .flags = IORESOURCE_BUSY | IORESOURCE_MEM -}; - -struct resource boot_param_res = { - .name = "Boot parameter", - .start = 0, - .end = 0, - .flags = IORESOURCE_BUSY | IORESOURCE_MEM -}; - - -/* - * 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) -{ - void *control_code_buffer; - const unsigned long *func; - - func = (unsigned long *)&relocate_new_kernel; - /* Pre-load control code buffer to minimize work in kexec path */ - control_code_buffer = page_address(image->control_code_page); - memcpy((void *)control_code_buffer, (const void *)func[0], - relocate_new_kernel_size); - flush_icache_range((unsigned long)control_code_buffer, - (unsigned long)control_code_buffer + relocate_new_kernel_size); - ia64_kimage = image; - - return 0; -} - -void machine_kexec_cleanup(struct kimage *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. - */ -static void ia64_machine_kexec(struct unw_frame_info *info, void *arg) -{ - struct kimage *image = arg; - relocate_new_kernel_t rnk; - void *pal_addr = efi_get_pal_addr(); - unsigned long code_addr; - int ii; - u64 fp, gp; - ia64_fptr_t *init_handler = (ia64_fptr_t *)ia64_os_init_on_kdump; - - BUG_ON(!image); - code_addr = (unsigned long)page_address(image->control_code_page); - if (image->type == KEXEC_TYPE_CRASH) { - crash_save_this_cpu(); - current->thread.ksp = (__u64)info->sw - 16; - - /* Register noop init handler */ - fp = ia64_tpa(init_handler->fp); - gp = ia64_tpa(ia64_getreg(_IA64_REG_GP)); - ia64_sal_set_vectors(SAL_VECTOR_OS_INIT, fp, gp, 0, fp, gp, 0); - } else { - /* Unregister init handlers of current kernel */ - ia64_sal_set_vectors(SAL_VECTOR_OS_INIT, 0, 0, 0, 0, 0, 0); - } - - /* Unregister mca handler - No more recovery on current kernel */ - ia64_sal_set_vectors(SAL_VECTOR_OS_MCA, 0, 0, 0, 0, 0, 0); - - /* Interrupts aren't acceptable while we reboot */ - local_irq_disable(); - - /* Mask CMC and Performance Monitor interrupts */ - ia64_setreg(_IA64_REG_CR_PMV, 1 << 16); - ia64_setreg(_IA64_REG_CR_CMCV, 1 << 16); - - /* Mask ITV and Local Redirect Registers */ - ia64_set_itv(1 << 16); - ia64_set_lrr0(1 << 16); - ia64_set_lrr1(1 << 16); - - /* terminate possible nested in-service interrupts */ - for (ii = 0; ii < 16; ii++) - ia64_eoi(); - - /* unmask TPR and clear any pending interrupts */ - ia64_setreg(_IA64_REG_CR_TPR, 0); - ia64_srlz_d(); - while (ia64_get_ivr() != IA64_SPURIOUS_INT_VECTOR) - ia64_eoi(); - rnk = (relocate_new_kernel_t)&code_addr; - (*rnk)(image->head, image->start, ia64_boot_param, - GRANULEROUNDDOWN((unsigned long) pal_addr)); - BUG(); -} - -void machine_kexec(struct kimage *image) -{ - BUG_ON(!image); - unw_init_running(ia64_machine_kexec, image); - for(;;); -} - -void arch_crash_save_vmcoreinfo(void) -{ -#if defined(CONFIG_SPARSEMEM) - VMCOREINFO_SYMBOL(pgdat_list); - VMCOREINFO_LENGTH(pgdat_list, MAX_NUMNODES); -#endif -#ifdef CONFIG_NUMA - VMCOREINFO_SYMBOL(node_memblk); - VMCOREINFO_LENGTH(node_memblk, NR_NODE_MEMBLKS); - VMCOREINFO_STRUCT_SIZE(node_memblk_s); - VMCOREINFO_OFFSET(node_memblk_s, start_paddr); - VMCOREINFO_OFFSET(node_memblk_s, size); -#endif -#if CONFIG_PGTABLE_LEVELS == 3 - VMCOREINFO_CONFIG(PGTABLE_3); -#elif CONFIG_PGTABLE_LEVELS == 4 - VMCOREINFO_CONFIG(PGTABLE_4); -#endif -} - |