diff options
Diffstat (limited to 'recipes/linux/logicpd-pxa270-2.6.19.2/kexec-arm-r3.patch')
| -rw-r--r-- | recipes/linux/logicpd-pxa270-2.6.19.2/kexec-arm-r3.patch | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/recipes/linux/logicpd-pxa270-2.6.19.2/kexec-arm-r3.patch b/recipes/linux/logicpd-pxa270-2.6.19.2/kexec-arm-r3.patch new file mode 100644 index 0000000000..e107f6de4a --- /dev/null +++ b/recipes/linux/logicpd-pxa270-2.6.19.2/kexec-arm-r3.patch @@ -0,0 +1,275 @@ +Index: linux-2.6.17/arch/arm/Kconfig +=================================================================== +--- linux-2.6.17.orig/arch/arm/Kconfig 2006-06-20 13:22:58.163642800 +0200 ++++ linux-2.6.17/arch/arm/Kconfig 2006-06-20 13:22:59.596424984 +0200 +@@ -326,6 +326,23 @@ + depends on CPU_XSCALE && !XSCALE_PMU_TIMER + default y + ++config KEXEC ++ bool "Kexec system call (EXPERIMENTAL)" ++ depends on EXPERIMENTAL ++ help ++ kexec is a system call that implements the ability to shutdown your ++ current kernel, and to start another kernel. It is like a reboot ++ but it is indepedent of the system firmware. And like a reboot ++ you can start any kernel with it, not just Linux. ++ ++ The name comes from the similiarity to the exec system call. ++ ++ It is an ongoing process to be certain the hardware in a machine ++ is properly shutdown, so do not be surprised if this code does not ++ initially work for you. It may help to enable device hotplugging ++ support. As of this writing the exact hardware interface is ++ strongly in flux, so no good recommendation can be made. ++ + endmenu + + source "arch/arm/common/Kconfig" +Index: linux-2.6.17/arch/arm/kernel/calls.S +=================================================================== +--- linux-2.6.17.orig/arch/arm/kernel/calls.S 2006-06-20 13:22:50.813760152 +0200 ++++ linux-2.6.17/arch/arm/kernel/calls.S 2006-06-20 13:22:59.596424984 +0200 +@@ -198,7 +198,7 @@ + CALL(sys_sigaltstack_wrapper) + CALL(sys_sendfile) + CALL(sys_ni_syscall) +- CALL(sys_ni_syscall) ++ CALL(sys_kexec_load) + /* 190 */ CALL(sys_vfork_wrapper) + CALL(sys_getrlimit) + CALL(sys_mmap2) +Index: linux-2.6.17/arch/arm/kernel/machine_kexec.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.17/arch/arm/kernel/machine_kexec.c 2006-06-23 11:21:58.195936184 +0200 +@@ -0,0 +1,78 @@ ++/* ++ * machine_kexec.c - handle transition of Linux booting another kernel ++ */ ++ ++#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/cacheflush.h> ++#include <asm/mach-types.h> ++ ++const extern unsigned char relocate_new_kernel[]; ++const extern unsigned int relocate_new_kernel_size; ++ ++extern void setup_mm_for_reboot(char mode); ++ ++extern unsigned long kexec_start_address; ++extern unsigned long kexec_indirection_page; ++extern unsigned long kexec_mach_type; ++ ++/* ++ * Provide a dummy crash_notes definition while crash dump arrives to arm. ++ * This prevents breakage of crash_notes attribute in kernel/ksysfs.c. ++ */ ++ ++int machine_kexec_prepare(struct kimage *image) ++{ ++ return 0; ++} ++ ++void machine_kexec_cleanup(struct kimage *image) ++{ ++} ++ ++void machine_shutdown(void) ++{ ++} ++ ++void machine_crash_shutdown(struct pt_regs *regs) ++{ ++} ++ ++void machine_kexec(struct kimage *image) ++{ ++ unsigned long page_list; ++ unsigned long reboot_code_buffer_phys; ++ void *reboot_code_buffer; ++ ++ ++ page_list = image->head & PAGE_MASK; ++ ++ /* we need both effective and real address here */ ++ reboot_code_buffer_phys = ++ page_to_pfn(image->control_code_page) << PAGE_SHIFT; ++ reboot_code_buffer = page_address(image->control_code_page); ++ ++ /* Prepare parameters for reboot_code_buffer*/ ++ kexec_start_address = image->start; ++ kexec_indirection_page = page_list; ++ kexec_mach_type = machine_arch_type; ++ ++ /* copy our kernel relocation code to the control code page */ ++ memcpy(reboot_code_buffer, ++ relocate_new_kernel, relocate_new_kernel_size); ++ ++ ++ flush_icache_range((unsigned long) reboot_code_buffer, ++ (unsigned long) reboot_code_buffer + KEXEC_CONTROL_CODE_SIZE); ++ printk(KERN_INFO "Bye!\n"); ++ ++ cpu_proc_fin(); ++ setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/ ++ cpu_reset(reboot_code_buffer_phys); ++} +Index: linux-2.6.17/arch/arm/kernel/Makefile +=================================================================== +--- linux-2.6.17.orig/arch/arm/kernel/Makefile 2006-06-20 13:22:50.814760000 +0200 ++++ linux-2.6.17/arch/arm/kernel/Makefile 2006-06-20 13:22:59.597424832 +0200 +@@ -20,6 +20,7 @@ + obj-$(CONFIG_ISA_DMA) += dma-isa.o + obj-$(CONFIG_PCI) += bios32.o + obj-$(CONFIG_SMP) += smp.o ++obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o + obj-$(CONFIG_OABI_COMPAT) += sys_oabi-compat.o + + obj-$(CONFIG_IWMMXT) += iwmmxt.o +Index: linux-2.6.17/arch/arm/kernel/relocate_kernel.S +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.17/arch/arm/kernel/relocate_kernel.S 2006-06-20 13:22:59.597424832 +0200 +@@ -0,0 +1,74 @@ ++/* ++ * relocate_kernel.S - put the kernel image in place to boot ++ */ ++ ++#include <asm/kexec.h> ++ ++ .globl relocate_new_kernel ++relocate_new_kernel: ++ ++ ldr r0,kexec_indirection_page ++ ldr r1,kexec_start_address ++ ++ ++0: /* top, read another word for the indirection page */ ++ ldr r3, [r0],#4 ++ ++ /* Is it a destination page. Put destination address to r4 */ ++ tst r3,#1,0 ++ beq 1f ++ bic r4,r3,#1 ++ b 0b ++1: ++ /* Is it an indirection page */ ++ tst r3,#2,0 ++ beq 1f ++ bic r0,r3,#2 ++ b 0b ++1: ++ ++ /* are we done ? */ ++ tst r3,#4,0 ++ beq 1f ++ b 2f ++ ++1: ++ /* is it source ? */ ++ tst r3,#8,0 ++ beq 0b ++ bic r3,r3,#8 ++ mov r6,#1024 ++9: ++ ldr r5,[r3],#4 ++ str r5,[r4],#4 ++ subs r6,r6,#1 ++ bne 9b ++ b 0b ++ ++2: ++ /* Jump to relocated kernel */ ++ mov lr,r1 ++ mov r0,#0 ++ ldr r1,kexec_mach_type ++ mov r2,#0 ++ mov pc,lr ++ ++ .globl kexec_start_address ++kexec_start_address: ++ .long 0x0 ++ ++ .globl kexec_indirection_page ++kexec_indirection_page: ++ .long 0x0 ++ ++ .globl kexec_mach_type ++kexec_mach_type: ++ .long 0x0 ++ ++relocate_new_kernel_end: ++ ++ .globl relocate_new_kernel_size ++relocate_new_kernel_size: ++ .long relocate_new_kernel_end - relocate_new_kernel ++ ++ +Index: linux-2.6.17/include/asm-arm/kexec.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.17/include/asm-arm/kexec.h 2006-06-20 13:22:59.598424680 +0200 +@@ -0,0 +1,30 @@ ++#ifndef _ARM_KEXEC_H ++#define _ARM_KEXEC_H ++ ++#ifdef CONFIG_KEXEC ++ ++/* Maximum physical address we can use pages from */ ++#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) ++/* Maximum address we can reach in physical address mode */ ++#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) ++/* Maximum address we can use for the control code buffer */ ++#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE ++ ++#define KEXEC_CONTROL_CODE_SIZE 4096 ++ ++#define KEXEC_ARCH KEXEC_ARCH_ARM ++ ++#ifndef __ASSEMBLY__ ++ ++#define MAX_NOTE_BYTES 1024 ++ ++struct kimage; ++/* Provide a dummy definition to avoid build failures. */ ++static inline void crash_setup_regs(struct pt_regs *newregs, ++ struct pt_regs *oldregs) { } ++ ++#endif /* __ASSEMBLY__ */ ++ ++#endif /* CONFIG_KEXEC */ ++ ++#endif /* _ARM_KEXEC_H */ +Index: linux-2.6.17/include/asm-arm/unistd.h +=================================================================== +--- linux-2.6.17.orig/include/asm-arm/unistd.h 2006-06-20 13:22:50.815759848 +0200 ++++ linux-2.6.17/include/asm-arm/unistd.h 2006-06-20 13:22:59.598424680 +0200 +@@ -216,7 +216,7 @@ + #define __NR_sigaltstack (__NR_SYSCALL_BASE+186) + #define __NR_sendfile (__NR_SYSCALL_BASE+187) + /* 188 reserved */ +- /* 189 reserved */ ++#define __NR_sys_kexec_load (__NR_SYSCALL_BASE+189) /* 189 was reserved, temporarily use it for sys_kexec_load */ + #define __NR_vfork (__NR_SYSCALL_BASE+190) + #define __NR_ugetrlimit (__NR_SYSCALL_BASE+191) /* SuS compliant getrlimit */ + #define __NR_mmap2 (__NR_SYSCALL_BASE+192) +Index: linux-2.6.17/include/linux/kexec.h +=================================================================== +--- linux-2.6.17.orig/include/linux/kexec.h 2006-06-20 13:22:50.815759848 +0200 ++++ linux-2.6.17/include/linux/kexec.h 2006-06-20 13:22:59.600424376 +0200 +@@ -119,6 +119,7 @@ + #define KEXEC_ARCH_PPC (20 << 16) + #define KEXEC_ARCH_PPC64 (21 << 16) + #define KEXEC_ARCH_IA_64 (50 << 16) ++#define KEXEC_ARCH_ARM (40 << 16) + #define KEXEC_ARCH_S390 (22 << 16) + #define KEXEC_ARCH_SH (42 << 16) + |