diff options
| -rw-r--r-- | arch/mips/Kconfig | 4 | ||||
| -rw-r--r-- | arch/mips/generic/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/generic/kexec.c | 44 | ||||
| -rw-r--r-- | arch/mips/kernel/machine_kexec.c | 42 |
4 files changed, 45 insertions, 46 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index f744d25f7423..ce55c3c2d10d 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -133,6 +133,7 @@ config MIPS_GENERIC select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN select USE_OF + select UHI_BOOT help Select this to build a kernel which aims to support multiple boards, generally using a flattened device tree passed from the bootloader @@ -2899,6 +2900,9 @@ config USE_OF select OF_EARLY_FLATTREE select IRQ_DOMAIN +config UHI_BOOT + bool + config BUILTIN_DTB bool diff --git a/arch/mips/generic/Makefile b/arch/mips/generic/Makefile index d03a36f869a4..181aa1335419 100644 --- a/arch/mips/generic/Makefile +++ b/arch/mips/generic/Makefile @@ -15,5 +15,4 @@ obj-y += proc.o obj-$(CONFIG_YAMON_DT_SHIM) += yamon-dt.o obj-$(CONFIG_LEGACY_BOARD_SEAD3) += board-sead3.o obj-$(CONFIG_LEGACY_BOARD_OCELOT) += board-ocelot.o -obj-$(CONFIG_KEXEC) += kexec.o obj-$(CONFIG_VIRT_BOARD_RANCHU) += board-ranchu.o diff --git a/arch/mips/generic/kexec.c b/arch/mips/generic/kexec.c deleted file mode 100644 index 1ca409f58929..000000000000 --- a/arch/mips/generic/kexec.c +++ /dev/null @@ -1,44 +0,0 @@ -/* - * Copyright (C) 2016 Imagination Technologies - * Author: Marcin Nowakowski <marcin.nowakowski@mips.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/kexec.h> -#include <linux/libfdt.h> -#include <linux/uaccess.h> - -static int generic_kexec_prepare(struct kimage *image) -{ - int i; - - for (i = 0; i < image->nr_segments; i++) { - struct fdt_header fdt; - - if (image->segment[i].memsz <= sizeof(fdt)) - continue; - - if (copy_from_user(&fdt, image->segment[i].buf, sizeof(fdt))) - continue; - - if (fdt_check_header(&fdt)) - continue; - - kexec_args[0] = -2; - kexec_args[1] = (unsigned long) - phys_to_virt((unsigned long)image->segment[i].mem); - break; - } - return 0; -} - -static int __init register_generic_kexec(void) -{ - _machine_kexec_prepare = generic_kexec_prepare; - return 0; -} -arch_initcall(register_generic_kexec); diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c index 14ced77c5ef6..35175eb2e8b0 100644 --- a/arch/mips/kernel/machine_kexec.c +++ b/arch/mips/kernel/machine_kexec.c @@ -9,6 +9,7 @@ #include <linux/kexec.h> #include <linux/mm.h> #include <linux/delay.h> +#include <linux/libfdt.h> #include <asm/cacheflush.h> #include <asm/page.h> @@ -28,7 +29,6 @@ atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0); void (*_crash_smp_send_stop)(void) = NULL; #endif -int (*_machine_kexec_prepare)(struct kimage *) = NULL; void (*_machine_kexec_shutdown)(void) = NULL; void (*_machine_crash_shutdown)(struct pt_regs *regs) = NULL; @@ -52,6 +52,46 @@ static void kexec_image_info(const struct kimage *kimage) } } +#ifdef CONFIG_UHI_BOOT + +static int uhi_machine_kexec_prepare(struct kimage *kimage) +{ + int i; + + /* + * In case DTB file is not passed to the new kernel, a flat device + * tree will be created by kexec tool. It holds modified command + * line for the new kernel. + */ + for (i = 0; i < kimage->nr_segments; i++) { + struct fdt_header fdt; + + if (kimage->segment[i].memsz <= sizeof(fdt)) + continue; + + if (copy_from_user(&fdt, kimage->segment[i].buf, sizeof(fdt))) + continue; + + if (fdt_check_header(&fdt)) + continue; + + kexec_args[0] = -2; + kexec_args[1] = (unsigned long) + phys_to_virt((unsigned long)kimage->segment[i].mem); + break; + } + + return 0; +} + +int (*_machine_kexec_prepare)(struct kimage *) = uhi_machine_kexec_prepare; + +#else + +int (*_machine_kexec_prepare)(struct kimage *) = NULL; + +#endif /* CONFIG_UHI_BOOT */ + int machine_kexec_prepare(struct kimage *kimage) { |