[OpenWrt-Devel,RFC,7/7] mips/kexec: parse and use parameters specified by userspace kexec tool.
diff mbox

Message ID 1422021132-24526-8-git-send-email-yszhou4tech@gmail.com
State Changes Requested
Headers show

Commit Message

Yousong Zhou Jan. 23, 2015, 1:52 p.m. UTC
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
---
 .../333-kexec-parameter-from-kexec-tools.patch     |  298 ++++++++++++++++++++
 .../333-kexec-parameter-from-kexec-tools.patch     |  298 ++++++++++++++++++++
 2 files changed, 596 insertions(+)
 create mode 100644 target/linux/generic/patches-3.10/333-kexec-parameter-from-kexec-tools.patch
 create mode 100644 target/linux/generic/patches-3.14/333-kexec-parameter-from-kexec-tools.patch

Patch
diff mbox

diff --git a/target/linux/generic/patches-3.10/333-kexec-parameter-from-kexec-tools.patch b/target/linux/generic/patches-3.10/333-kexec-parameter-from-kexec-tools.patch
new file mode 100644
index 0000000..af6ec1c
--- /dev/null
+++ b/target/linux/generic/patches-3.10/333-kexec-parameter-from-kexec-tools.patch
@@ -0,0 +1,298 @@ 
+Index: linux-3.10.49/arch/mips/kernel/machine_kexec.c
+===================================================================
+--- linux-3.10.49.orig/arch/mips/kernel/machine_kexec.c	2014-07-18 06:58:15.000000000 +0800
++++ linux-3.10.49/arch/mips/kernel/machine_kexec.c	2014-09-11 12:28:51.164810693 +0800
+@@ -10,45 +10,146 @@
+ #include <linux/mm.h>
+ #include <linux/delay.h>
+ 
++#include <asm/bootinfo.h>
+ #include <asm/cacheflush.h>
+ #include <asm/page.h>
+-
+-extern const unsigned char relocate_new_kernel[];
+-extern const size_t relocate_new_kernel_size;
+-
+-extern unsigned long kexec_start_address;
+-extern unsigned long kexec_indirection_page;
++#include <asm/uaccess.h>
++#include "machine_kexec.h"
+ 
+ int (*_machine_kexec_prepare)(struct kimage *) = NULL;
+ void (*_machine_kexec_shutdown)(void) = NULL;
+ void (*_machine_crash_shutdown)(struct pt_regs *regs) = NULL;
++
+ #ifdef CONFIG_SMP
+ void (*relocated_kexec_smp_wait) (void *);
+ atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0);
+ #endif
+ 
+-int
+-machine_kexec_prepare(struct kimage *kimage)
++static void machine_kexec_print_args(void)
++{
++	unsigned long argc = (int)kexec_args[0];
++	int i;
++
++	pr_info("kexec_args[0] (argc): %lu\n", argc);
++	pr_info("kexec_args[1] (argv): %p\n", (void *)kexec_args[1]);
++	pr_info("kexec_args[2] (env ): %p\n", (void *)kexec_args[2]);
++	pr_info("kexec_args[3] (desc): %p\n", (void *)kexec_args[3]);
++
++	for (i = 0; i < argc; i++) {
++		pr_info("kexec_argv[%d] = %p, %s\n",
++				i, kexec_argv[i], kexec_argv[i]);
++	}
++}
++
++static void machine_kexec_init_argv(struct kimage *image)
+ {
++	void __user *buf = NULL;
++	size_t bufsz;
++	size_t size;
++	int i;
++
++	bufsz = 0;
++	for (i = 0; i < image->nr_segments; i++) {
++		struct kexec_segment *seg;
++
++		seg = &image->segment[i];
++		if (seg->bufsz < 6)
++			continue;
++
++		if (strncmp((char *) seg->buf, "kexec\x20", 6))
++			continue;
++
++		/* don't copy "kexec" */
++		buf = seg->buf + 6;
++		bufsz = seg->bufsz - 6;
++		break;
++	}
++
++	if (!buf)
++		return;
++
++	size = KEXEC_COMMAND_LINE_SIZE;
++	size = min(size, bufsz);
++	if (size < bufsz)
++		pr_warn("kexec command line truncated to %zd bytes\n", size);
++
++	/* Copy to kernel space */
++	copy_from_user(kexec_argv_buf, buf, size);
++	kexec_argv_buf[size - 1] = 0;
++}
++
++static void machine_kexec_parse_argv(struct kimage *image)
++{
++	char *reboot_code_buffer;
++	int reloc_delta;
++	char *ptr;
++	int argc;
++	int i;
++
++	ptr = kexec_argv_buf;
++	argc = 0;
++
++	/*
++	 * convert command line string to array of parameters
++	 * (as bootloader does).
++	 */
++	while (ptr && *ptr && (KEXEC_MAX_ARGC > argc)) {
++		if (*ptr == ' ') {
++			*ptr++ = '\0';
++			continue;
++		}
++
++		kexec_argv[argc++] = ptr;
++		ptr = strchr(ptr, ' ');
++	}
++
++	if (!argc)
++		return;
++
++	kexec_args[0] = argc;
++	kexec_args[1] = (unsigned long)kexec_argv;
++	kexec_args[2] = 0;
++	kexec_args[3] = 0;
++
++	reboot_code_buffer = page_address(image->control_code_page);
++	reloc_delta = reboot_code_buffer - (char *)kexec_relocate_new_kernel;
++
++	kexec_args[1] += reloc_delta;
++	for (i = 0; i < argc; i++)
++		kexec_argv[i] += reloc_delta;
++}
++
++int machine_kexec_prepare(struct kimage *kimage)
++{
++	/*
++	 * Whenever arguments passed from kexec-tools, Init the arguments as
++	 * the original ones to try avoiding booting failure.
++	 */
++
++	kexec_args[0] = fw_arg0;
++	kexec_args[1] = fw_arg1;
++	kexec_args[2] = fw_arg2;
++	kexec_args[3] = fw_arg3;
++
++	machine_kexec_init_argv(kimage);
++	machine_kexec_parse_argv(kimage);
++
+ 	if (_machine_kexec_prepare)
+ 		return _machine_kexec_prepare(kimage);
+ 	return 0;
+ }
+ 
+-void
+-machine_kexec_cleanup(struct kimage *kimage)
++void machine_kexec_cleanup(struct kimage *kimage)
+ {
+ }
+ 
+-void
+-machine_shutdown(void)
++void machine_shutdown(void)
+ {
+ 	if (_machine_kexec_shutdown)
+ 		_machine_kexec_shutdown();
+ }
+ 
+-void
+-machine_crash_shutdown(struct pt_regs *regs)
++void machine_crash_shutdown(struct pt_regs *regs)
+ {
+ 	if (_machine_crash_shutdown)
+ 		_machine_crash_shutdown(regs);
+@@ -58,25 +159,35 @@
+ 
+ typedef void (*noretfun_t)(void) __noreturn;
+ 
+-void
+-machine_kexec(struct kimage *image)
++void machine_kexec(struct kimage *image)
+ {
+ 	unsigned long reboot_code_buffer;
+ 	unsigned long entry;
+ 	unsigned long *ptr;
+ 
+ 	reboot_code_buffer =
+-	  (unsigned long)page_address(image->control_code_page);
++		(unsigned long)page_address(image->control_code_page);
++	pr_info("reboot_code_buffer = %p\n", (void *)reboot_code_buffer);
+ 
+ 	kexec_start_address =
+-		(unsigned long) phys_to_virt(image->start);
++		(unsigned long)phys_to_virt(image->start);
++	pr_info("kexec_start_address = %p\n", (void *)kexec_start_address);
+ 
+ 	kexec_indirection_page =
+ 		(unsigned long) phys_to_virt(image->head & PAGE_MASK);
++	pr_info("kexec_indirection_page = %p\n", (void *)kexec_indirection_page);
+ 
+-	memcpy((void*)reboot_code_buffer, relocate_new_kernel,
+-	       relocate_new_kernel_size);
+-
++	pr_info("Where is memcpy: %p\n", memcpy);
++	pr_info("kexec_relocate_new_kernel = %p, kexec_relocate_new_kernel_end = %p\n",
++		(void *)kexec_relocate_new_kernel, &kexec_relocate_new_kernel_end);
++	pr_info("Copy %lu bytes from %p to %p\n", KEXEC_RELOCATE_NEW_KERNEL_SIZE,
++		(void *)kexec_relocate_new_kernel, (void *)reboot_code_buffer);
++	memcpy((void*)reboot_code_buffer, kexec_relocate_new_kernel,
++	       KEXEC_RELOCATE_NEW_KERNEL_SIZE);
++
++	pr_info("Before _print_args().\n");
++	machine_kexec_print_args();
++	pr_info("Before eval loop.\n");
+ 	/*
+ 	 * The generic kexec code builds a page list with physical
+ 	 * addresses. they are directly accessible through KSEG0 (or
+@@ -94,15 +205,16 @@
+ 	/*
+ 	 * we do not want to be bothered.
+ 	 */
++	pr_info("Before irq_disable.\n");
+ 	local_irq_disable();
+ 
+-	printk("Will call new kernel at %08lx\n", image->start);
+-	printk("Bye ...\n");
++	pr_info("Will call new kernel at %08lx\n", image->start);
++	pr_info("Bye ...\n");
+ 	__flush_cache_all();
+ #ifdef CONFIG_SMP
+ 	/* All secondary cpus now may jump to kexec_wait cycle */
+ 	relocated_kexec_smp_wait = reboot_code_buffer +
+-		(void *)(kexec_smp_wait - relocate_new_kernel);
++		(void *)(kexec_smp_wait - kexec_relocate_new_kernel);
+ 	smp_wmb();
+ 	atomic_set(&kexec_ready_to_reboot, 1);
+ #endif
+Index: linux-3.10.49/arch/mips/kernel/relocate_kernel.S
+===================================================================
+--- linux-3.10.49.orig/arch/mips/kernel/relocate_kernel.S	2014-07-18 06:58:15.000000000 +0800
++++ linux-3.10.49/arch/mips/kernel/relocate_kernel.S	2014-09-11 12:28:51.168810861 +0800
+@@ -12,8 +12,9 @@
+ #include <asm/mipsregs.h>
+ #include <asm/stackframe.h>
+ #include <asm/addrspace.h>
++#include "machine_kexec.h"
+ 
+-LEAF(relocate_new_kernel)
++LEAF(kexec_relocate_new_kernel)
+ 	PTR_L a0,	arg0
+ 	PTR_L a1,	arg1
+ 	PTR_L a2,	arg2
+@@ -92,7 +93,7 @@
+ #endif
+ 	/* jump to kexec_start_address */
+ 	j		s1
+-	END(relocate_new_kernel)
++	END(kexec_relocate_new_kernel)
+ 
+ #ifdef CONFIG_SMP
+ /*
+@@ -178,9 +179,15 @@
+ 	PTR		0
+ 	.size		kexec_indirection_page, PTRSIZE
+ 
+-relocate_new_kernel_end:
++kexec_argv_buf:
++	EXPORT(kexec_argv_buf)
++	.skip		KEXEC_COMMAND_LINE_SIZE
++	.size		kexec_argv_buf, KEXEC_COMMAND_LINE_SIZE
++
++kexec_argv:
++	EXPORT(kexec_argv)
++	.skip		KEXEC_ARGV_SIZE
++	.size		kexec_argv, KEXEC_ARGV_SIZE
+ 
+-relocate_new_kernel_size:
+-	EXPORT(relocate_new_kernel_size)
+-	PTR		relocate_new_kernel_end - relocate_new_kernel
+-	.size		relocate_new_kernel_size, PTRSIZE
++kexec_relocate_new_kernel_end:
++	EXPORT(kexec_relocate_new_kernel_end)
+Index: linux-3.10.49/arch/mips/kernel/machine_kexec.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-3.10.49/arch/mips/kernel/machine_kexec.h	2014-09-11 13:48:44.057831979 +0800
+@@ -0,0 +1,20 @@
++#ifndef _MACHINE_KEXEC_H
++#define _MACHINE_KEXEC_H
++
++#ifndef __ASSEMBLY__
++extern const unsigned char kexec_relocate_new_kernel[];
++extern unsigned long kexec_relocate_new_kernel_end;
++extern unsigned long kexec_start_address;
++extern unsigned long kexec_indirection_page;
++
++extern char kexec_argv_buf[];
++extern char *kexec_argv[];
++
++#define KEXEC_RELOCATE_NEW_KERNEL_SIZE	((unsigned long)&kexec_relocate_new_kernel_end - (unsigned long)kexec_relocate_new_kernel)
++#endif /* !__ASSEMBLY__ */
++
++#define KEXEC_COMMAND_LINE_SIZE		256
++#define KEXEC_ARGV_SIZE			(KEXEC_COMMAND_LINE_SIZE / 16)
++#define KEXEC_MAX_ARGC			(KEXEC_ARGV_SIZE / sizeof(long))
++
++#endif
diff --git a/target/linux/generic/patches-3.14/333-kexec-parameter-from-kexec-tools.patch b/target/linux/generic/patches-3.14/333-kexec-parameter-from-kexec-tools.patch
new file mode 100644
index 0000000..af6ec1c
--- /dev/null
+++ b/target/linux/generic/patches-3.14/333-kexec-parameter-from-kexec-tools.patch
@@ -0,0 +1,298 @@ 
+Index: linux-3.10.49/arch/mips/kernel/machine_kexec.c
+===================================================================
+--- linux-3.10.49.orig/arch/mips/kernel/machine_kexec.c	2014-07-18 06:58:15.000000000 +0800
++++ linux-3.10.49/arch/mips/kernel/machine_kexec.c	2014-09-11 12:28:51.164810693 +0800
+@@ -10,45 +10,146 @@
+ #include <linux/mm.h>
+ #include <linux/delay.h>
+ 
++#include <asm/bootinfo.h>
+ #include <asm/cacheflush.h>
+ #include <asm/page.h>
+-
+-extern const unsigned char relocate_new_kernel[];
+-extern const size_t relocate_new_kernel_size;
+-
+-extern unsigned long kexec_start_address;
+-extern unsigned long kexec_indirection_page;
++#include <asm/uaccess.h>
++#include "machine_kexec.h"
+ 
+ int (*_machine_kexec_prepare)(struct kimage *) = NULL;
+ void (*_machine_kexec_shutdown)(void) = NULL;
+ void (*_machine_crash_shutdown)(struct pt_regs *regs) = NULL;
++
+ #ifdef CONFIG_SMP
+ void (*relocated_kexec_smp_wait) (void *);
+ atomic_t kexec_ready_to_reboot = ATOMIC_INIT(0);
+ #endif
+ 
+-int
+-machine_kexec_prepare(struct kimage *kimage)
++static void machine_kexec_print_args(void)
++{
++	unsigned long argc = (int)kexec_args[0];
++	int i;
++
++	pr_info("kexec_args[0] (argc): %lu\n", argc);
++	pr_info("kexec_args[1] (argv): %p\n", (void *)kexec_args[1]);
++	pr_info("kexec_args[2] (env ): %p\n", (void *)kexec_args[2]);
++	pr_info("kexec_args[3] (desc): %p\n", (void *)kexec_args[3]);
++
++	for (i = 0; i < argc; i++) {
++		pr_info("kexec_argv[%d] = %p, %s\n",
++				i, kexec_argv[i], kexec_argv[i]);
++	}
++}
++
++static void machine_kexec_init_argv(struct kimage *image)
+ {
++	void __user *buf = NULL;
++	size_t bufsz;
++	size_t size;
++	int i;
++
++	bufsz = 0;
++	for (i = 0; i < image->nr_segments; i++) {
++		struct kexec_segment *seg;
++
++		seg = &image->segment[i];
++		if (seg->bufsz < 6)
++			continue;
++
++		if (strncmp((char *) seg->buf, "kexec\x20", 6))
++			continue;
++
++		/* don't copy "kexec" */
++		buf = seg->buf + 6;
++		bufsz = seg->bufsz - 6;
++		break;
++	}
++
++	if (!buf)
++		return;
++
++	size = KEXEC_COMMAND_LINE_SIZE;
++	size = min(size, bufsz);
++	if (size < bufsz)
++		pr_warn("kexec command line truncated to %zd bytes\n", size);
++
++	/* Copy to kernel space */
++	copy_from_user(kexec_argv_buf, buf, size);
++	kexec_argv_buf[size - 1] = 0;
++}
++
++static void machine_kexec_parse_argv(struct kimage *image)
++{
++	char *reboot_code_buffer;
++	int reloc_delta;
++	char *ptr;
++	int argc;
++	int i;
++
++	ptr = kexec_argv_buf;
++	argc = 0;
++
++	/*
++	 * convert command line string to array of parameters
++	 * (as bootloader does).
++	 */
++	while (ptr && *ptr && (KEXEC_MAX_ARGC > argc)) {
++		if (*ptr == ' ') {
++			*ptr++ = '\0';
++			continue;
++		}
++
++		kexec_argv[argc++] = ptr;
++		ptr = strchr(ptr, ' ');
++	}
++
++	if (!argc)
++		return;
++
++	kexec_args[0] = argc;
++	kexec_args[1] = (unsigned long)kexec_argv;
++	kexec_args[2] = 0;
++	kexec_args[3] = 0;
++
++	reboot_code_buffer = page_address(image->control_code_page);
++	reloc_delta = reboot_code_buffer - (char *)kexec_relocate_new_kernel;
++
++	kexec_args[1] += reloc_delta;
++	for (i = 0; i < argc; i++)
++		kexec_argv[i] += reloc_delta;
++}
++
++int machine_kexec_prepare(struct kimage *kimage)
++{
++	/*
++	 * Whenever arguments passed from kexec-tools, Init the arguments as
++	 * the original ones to try avoiding booting failure.
++	 */
++
++	kexec_args[0] = fw_arg0;
++	kexec_args[1] = fw_arg1;
++	kexec_args[2] = fw_arg2;
++	kexec_args[3] = fw_arg3;
++
++	machine_kexec_init_argv(kimage);
++	machine_kexec_parse_argv(kimage);
++
+ 	if (_machine_kexec_prepare)
+ 		return _machine_kexec_prepare(kimage);
+ 	return 0;
+ }
+ 
+-void
+-machine_kexec_cleanup(struct kimage *kimage)
++void machine_kexec_cleanup(struct kimage *kimage)
+ {
+ }
+ 
+-void
+-machine_shutdown(void)
++void machine_shutdown(void)
+ {
+ 	if (_machine_kexec_shutdown)
+ 		_machine_kexec_shutdown();
+ }
+ 
+-void
+-machine_crash_shutdown(struct pt_regs *regs)
++void machine_crash_shutdown(struct pt_regs *regs)
+ {
+ 	if (_machine_crash_shutdown)
+ 		_machine_crash_shutdown(regs);
+@@ -58,25 +159,35 @@
+ 
+ typedef void (*noretfun_t)(void) __noreturn;
+ 
+-void
+-machine_kexec(struct kimage *image)
++void machine_kexec(struct kimage *image)
+ {
+ 	unsigned long reboot_code_buffer;
+ 	unsigned long entry;
+ 	unsigned long *ptr;
+ 
+ 	reboot_code_buffer =
+-	  (unsigned long)page_address(image->control_code_page);
++		(unsigned long)page_address(image->control_code_page);
++	pr_info("reboot_code_buffer = %p\n", (void *)reboot_code_buffer);
+ 
+ 	kexec_start_address =
+-		(unsigned long) phys_to_virt(image->start);
++		(unsigned long)phys_to_virt(image->start);
++	pr_info("kexec_start_address = %p\n", (void *)kexec_start_address);
+ 
+ 	kexec_indirection_page =
+ 		(unsigned long) phys_to_virt(image->head & PAGE_MASK);
++	pr_info("kexec_indirection_page = %p\n", (void *)kexec_indirection_page);
+ 
+-	memcpy((void*)reboot_code_buffer, relocate_new_kernel,
+-	       relocate_new_kernel_size);
+-
++	pr_info("Where is memcpy: %p\n", memcpy);
++	pr_info("kexec_relocate_new_kernel = %p, kexec_relocate_new_kernel_end = %p\n",
++		(void *)kexec_relocate_new_kernel, &kexec_relocate_new_kernel_end);
++	pr_info("Copy %lu bytes from %p to %p\n", KEXEC_RELOCATE_NEW_KERNEL_SIZE,
++		(void *)kexec_relocate_new_kernel, (void *)reboot_code_buffer);
++	memcpy((void*)reboot_code_buffer, kexec_relocate_new_kernel,
++	       KEXEC_RELOCATE_NEW_KERNEL_SIZE);
++
++	pr_info("Before _print_args().\n");
++	machine_kexec_print_args();
++	pr_info("Before eval loop.\n");
+ 	/*
+ 	 * The generic kexec code builds a page list with physical
+ 	 * addresses. they are directly accessible through KSEG0 (or
+@@ -94,15 +205,16 @@
+ 	/*
+ 	 * we do not want to be bothered.
+ 	 */
++	pr_info("Before irq_disable.\n");
+ 	local_irq_disable();
+ 
+-	printk("Will call new kernel at %08lx\n", image->start);
+-	printk("Bye ...\n");
++	pr_info("Will call new kernel at %08lx\n", image->start);
++	pr_info("Bye ...\n");
+ 	__flush_cache_all();
+ #ifdef CONFIG_SMP
+ 	/* All secondary cpus now may jump to kexec_wait cycle */
+ 	relocated_kexec_smp_wait = reboot_code_buffer +
+-		(void *)(kexec_smp_wait - relocate_new_kernel);
++		(void *)(kexec_smp_wait - kexec_relocate_new_kernel);
+ 	smp_wmb();
+ 	atomic_set(&kexec_ready_to_reboot, 1);
+ #endif
+Index: linux-3.10.49/arch/mips/kernel/relocate_kernel.S
+===================================================================
+--- linux-3.10.49.orig/arch/mips/kernel/relocate_kernel.S	2014-07-18 06:58:15.000000000 +0800
++++ linux-3.10.49/arch/mips/kernel/relocate_kernel.S	2014-09-11 12:28:51.168810861 +0800
+@@ -12,8 +12,9 @@
+ #include <asm/mipsregs.h>
+ #include <asm/stackframe.h>
+ #include <asm/addrspace.h>
++#include "machine_kexec.h"
+ 
+-LEAF(relocate_new_kernel)
++LEAF(kexec_relocate_new_kernel)
+ 	PTR_L a0,	arg0
+ 	PTR_L a1,	arg1
+ 	PTR_L a2,	arg2
+@@ -92,7 +93,7 @@
+ #endif
+ 	/* jump to kexec_start_address */
+ 	j		s1
+-	END(relocate_new_kernel)
++	END(kexec_relocate_new_kernel)
+ 
+ #ifdef CONFIG_SMP
+ /*
+@@ -178,9 +179,15 @@
+ 	PTR		0
+ 	.size		kexec_indirection_page, PTRSIZE
+ 
+-relocate_new_kernel_end:
++kexec_argv_buf:
++	EXPORT(kexec_argv_buf)
++	.skip		KEXEC_COMMAND_LINE_SIZE
++	.size		kexec_argv_buf, KEXEC_COMMAND_LINE_SIZE
++
++kexec_argv:
++	EXPORT(kexec_argv)
++	.skip		KEXEC_ARGV_SIZE
++	.size		kexec_argv, KEXEC_ARGV_SIZE
+ 
+-relocate_new_kernel_size:
+-	EXPORT(relocate_new_kernel_size)
+-	PTR		relocate_new_kernel_end - relocate_new_kernel
+-	.size		relocate_new_kernel_size, PTRSIZE
++kexec_relocate_new_kernel_end:
++	EXPORT(kexec_relocate_new_kernel_end)
+Index: linux-3.10.49/arch/mips/kernel/machine_kexec.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-3.10.49/arch/mips/kernel/machine_kexec.h	2014-09-11 13:48:44.057831979 +0800
+@@ -0,0 +1,20 @@
++#ifndef _MACHINE_KEXEC_H
++#define _MACHINE_KEXEC_H
++
++#ifndef __ASSEMBLY__
++extern const unsigned char kexec_relocate_new_kernel[];
++extern unsigned long kexec_relocate_new_kernel_end;
++extern unsigned long kexec_start_address;
++extern unsigned long kexec_indirection_page;
++
++extern char kexec_argv_buf[];
++extern char *kexec_argv[];
++
++#define KEXEC_RELOCATE_NEW_KERNEL_SIZE	((unsigned long)&kexec_relocate_new_kernel_end - (unsigned long)kexec_relocate_new_kernel)
++#endif /* !__ASSEMBLY__ */
++
++#define KEXEC_COMMAND_LINE_SIZE		256
++#define KEXEC_ARGV_SIZE			(KEXEC_COMMAND_LINE_SIZE / 16)
++#define KEXEC_MAX_ARGC			(KEXEC_ARGV_SIZE / sizeof(long))
++
++#endif