aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch')
-rw-r--r--target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch298
1 files changed, 0 insertions, 298 deletions
diff --git a/target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch b/target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
deleted file mode 100644
index 468a539c25..0000000000
--- a/target/linux/generic/patches-3.19/330-MIPS-kexec-Accept-command-line-parameters-from-users.patch
+++ /dev/null
@@ -1,298 +0,0 @@
-From 734dd58ef3a2161e1aaeb02d47e8b86c74379161 Mon Sep 17 00:00:00 2001
-From: Yousong Zhou <yszhou4tech@gmail.com>
-Date: Sat, 31 Jan 2015 22:26:03 +0800
-Subject: [PATCH 331/331] MIPS: kexec: Accept command line parameters from
- userspace.
-
-Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
----
- arch/mips/kernel/machine_kexec.c | 153 +++++++++++++++++++++++++++++++-----
- arch/mips/kernel/machine_kexec.h | 20 +++++
- arch/mips/kernel/relocate_kernel.S | 21 +++--
- 3 files changed, 167 insertions(+), 27 deletions(-)
- create mode 100644 arch/mips/kernel/machine_kexec.h
-
---- a/arch/mips/kernel/machine_kexec.c
-+++ b/arch/mips/kernel/machine_kexec.c
-@@ -10,45 +10,145 @@
- #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 ", 6))
-+ continue;
-+
-+ buf = seg->buf;
-+ bufsz = seg->bufsz;
-+ 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);
-@@ -66,10 +166,12 @@ machine_kexec(struct kimage *image)
- 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);
-+ pr_info("kexec_start_address = %p\n", (void *)kexec_start_address);
-
- if (image->type == KEXEC_TYPE_DEFAULT) {
- kexec_indirection_page =
-@@ -77,9 +179,19 @@ machine_kexec(struct kimage *image)
- } else {
- kexec_indirection_page = (unsigned long)&image->head;
- }
-+ 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
-@@ -98,15 +210,16 @@ machine_kexec(struct kimage *image)
- /*
- * 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
---- /dev/null
-+++ b/arch/mips/kernel/machine_kexec.h
-@@ -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
---- a/arch/mips/kernel/relocate_kernel.S
-+++ b/arch/mips/kernel/relocate_kernel.S
-@@ -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
-@@ -98,7 +99,7 @@ done:
- #endif
- /* jump to kexec_start_address */
- j s1
-- END(relocate_new_kernel)
-+ END(kexec_relocate_new_kernel)
-
- #ifdef CONFIG_SMP
- /*
-@@ -184,9 +185,15 @@ kexec_indirection_page:
- 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)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 22:14:24 +0000