diff options
| -rw-r--r-- | arch/powerpc/Kconfig | 60 | ||||
| -rw-r--r-- | arch/powerpc/configs/44x/iss476-smp_defconfig | 3 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kdump.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/page.h | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/crash_dump.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_44x.S | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/machine_kexec.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/prom_init.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/44x_mmu.c | 2 |
10 files changed, 56 insertions, 31 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index d66a47f..6c84756 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -368,7 +368,8 @@ config KEXEC config CRASH_DUMP bool "Build a kdump crash kernel" depends on PPC64 || 6xx || FSL_BOOKE - select RELOCATABLE if PPC64 || FSL_BOOKE + select RELOCATABLE if PPC64 + select DYNAMIC_MEMSTART if FSL_BOOKE help Build a kernel suitable for use as a kdump capture kernel. The same kernel binary can be used as production kernel and dump @@ -777,6 +778,10 @@ source "drivers/rapidio/Kconfig" endmenu +config NONSTATIC_KERNEL + bool + default n + menu "Advanced setup" depends on PPC32 @@ -826,23 +831,39 @@ config LOWMEM_CAM_NUM int "Number of CAMs to use to map low memory" if LOWMEM_CAM_NUM_BOOL default 3 -config RELOCATABLE - bool "Build a relocatable kernel (EXPERIMENTAL)" +config DYNAMIC_MEMSTART + bool "Enable page aligned dynamic load address for kernel (EXPERIMENTAL)" depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x) - help - This builds a kernel image that is capable of running at the - location the kernel is loaded at (some alignment restrictions may - exist). - - One use is for the kexec on panic case where the recovery kernel - must live at a different physical address than the primary - kernel. - - Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address - it has been loaded at and the compile time physical addresses - CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START - setting can still be useful to bootwrappers that need to know the - load location of the kernel (eg. u-boot/mkimage). + select NONSTATIC_KERNEL + help + This option enables the kernel to be loaded at any page aligned + physical address. The kernel creates a mapping from KERNELBASE to + the address where the kernel is loaded. The page size here implies + the TLB page size of the mapping for kernel on the particular platform. + Please refer to the init code for finding the TLB page size. + + DYNAMIC_MEMSTART is an easy way of implementing pseudo-RELOCATABLE + kernel image, where the only restriction is the page aligned kernel + load address. When this option is enabled, the compile time physical + address CONFIG_PHYSICAL_START is ignored. + +# Mapping based RELOCATABLE is moved to DYNAMIC_MEMSTART +# config RELOCATABLE +# bool "Build a relocatable kernel (EXPERIMENTAL)" +# depends on EXPERIMENTAL && ADVANCED_OPTIONS && FLATMEM && (FSL_BOOKE || PPC_47x) +# help +# This builds a kernel image that is capable of running at the +# location the kernel is loaded at, without any alignment restrictions. +# +# One use is for the kexec on panic case where the recovery kernel +# must live at a different physical address than the primary +# kernel. +# +# Note: If CONFIG_RELOCATABLE=y, then the kernel runs from the address +# it has been loaded at and the compile time physical addresses +# CONFIG_PHYSICAL_START is ignored. However CONFIG_PHYSICAL_START +# setting can still be useful to bootwrappers that need to know the +# load location of the kernel (eg. u-boot/mkimage). config PAGE_OFFSET_BOOL bool "Set custom page offset address" @@ -872,7 +893,7 @@ config KERNEL_START_BOOL config KERNEL_START hex "Virtual address of kernel base" if KERNEL_START_BOOL default PAGE_OFFSET if PAGE_OFFSET_BOOL - default "0xc2000000" if CRASH_DUMP && !RELOCATABLE + default "0xc2000000" if CRASH_DUMP && !NONSTATIC_KERNEL default "0xc0000000" config PHYSICAL_START_BOOL @@ -885,7 +906,7 @@ config PHYSICAL_START_BOOL config PHYSICAL_START hex "Physical address where the kernel is loaded" if PHYSICAL_START_BOOL - default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !RELOCATABLE + default "0x02000000" if PPC_STD_MMU && CRASH_DUMP && !NONSTATIC_KERNEL default "0x00000000" config PHYSICAL_ALIGN @@ -931,6 +952,7 @@ endmenu if PPC64 config RELOCATABLE bool "Build a relocatable kernel" + select NONSTATIC_KERNEL help This builds a kernel image that is capable of running anywhere in the RMA (real memory area) at any 16k-aligned base address. diff --git a/arch/powerpc/configs/44x/iss476-smp_defconfig b/arch/powerpc/configs/44x/iss476-smp_defconfig index a6eb6ad..ca00cf7 100644 --- a/arch/powerpc/configs/44x/iss476-smp_defconfig +++ b/arch/powerpc/configs/44x/iss476-smp_defconfig @@ -25,7 +25,8 @@ CONFIG_CMDLINE_BOOL=y CONFIG_CMDLINE="root=/dev/issblk0" # CONFIG_PCI is not set CONFIG_ADVANCED_OPTIONS=y -CONFIG_RELOCATABLE=y +CONFIG_NONSTATIC_KERNEL=y +CONFIG_DYNAMIC_MEMSTART=y CONFIG_NET=y CONFIG_PACKET=y CONFIG_UNIX=y diff --git a/arch/powerpc/include/asm/kdump.h b/arch/powerpc/include/asm/kdump.h index bffd062..c977620 100644 --- a/arch/powerpc/include/asm/kdump.h +++ b/arch/powerpc/include/asm/kdump.h @@ -32,11 +32,11 @@ #ifndef __ASSEMBLY__ -#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE) +#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_NONSTATIC_KERNEL) extern void reserve_kdump_trampoline(void); extern void setup_kdump_trampoline(void); #else -/* !CRASH_DUMP || RELOCATABLE */ +/* !CRASH_DUMP || !NONSTATIC_KERNEL */ static inline void reserve_kdump_trampoline(void) { ; } static inline void setup_kdump_trampoline(void) { ; } #endif diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h index 9d7485c..f149967 100644 --- a/arch/powerpc/include/asm/page.h +++ b/arch/powerpc/include/asm/page.h @@ -92,7 +92,7 @@ extern unsigned int HPAGE_SHIFT; #define PAGE_OFFSET ASM_CONST(CONFIG_PAGE_OFFSET) #define LOAD_OFFSET ASM_CONST((CONFIG_KERNEL_START-CONFIG_PHYSICAL_START)) -#if defined(CONFIG_RELOCATABLE) +#if defined(CONFIG_NONSTATIC_KERNEL) #ifndef __ASSEMBLY__ extern phys_addr_t memstart_addr; @@ -105,7 +105,7 @@ extern phys_addr_t kernstart_addr; #ifdef CONFIG_PPC64 #define MEMORY_START 0UL -#elif defined(CONFIG_RELOCATABLE) +#elif defined(CONFIG_NONSTATIC_KERNEL) #define MEMORY_START memstart_addr #else #define MEMORY_START (PHYSICAL_START + PAGE_OFFSET - KERNELBASE) diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c index 424afb6..b3ba516 100644 --- a/arch/powerpc/kernel/crash_dump.c +++ b/arch/powerpc/kernel/crash_dump.c @@ -28,7 +28,7 @@ #define DBG(fmt...) #endif -#ifndef CONFIG_RELOCATABLE +#ifndef CONFIG_NONSTATIC_KERNEL void __init reserve_kdump_trampoline(void) { memblock_reserve(0, KDUMP_RESERVE_LIMIT); @@ -67,7 +67,7 @@ void __init setup_kdump_trampoline(void) DBG(" <- setup_kdump_trampoline()\n"); } -#endif /* CONFIG_RELOCATABLE */ +#endif /* CONFIG_NONSTATIC_KERNEL */ static int __init parse_savemaxmem(char *p) { diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S index bb7a9c7..d7a1deb 100644 --- a/arch/powerpc/kernel/head_44x.S +++ b/arch/powerpc/kernel/head_44x.S @@ -86,8 +86,10 @@ _ENTRY(_start); bl early_init -#ifdef CONFIG_RELOCATABLE +#ifdef CONFIG_DYNAMIC_MEMSTART /* + * Mapping based, page aligned dynamic kernel loading. + * * r25 will contain RPN/ERPN for the start address of memory * * Add the difference between KERNELBASE and PAGE_OFFSET to the diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 9f5d210..d5d78c4 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -197,7 +197,7 @@ _ENTRY(__early_start) bl early_init -#ifdef CONFIG_RELOCATABLE +#ifdef CONFIG_DYNAMIC_MEMSTART lis r3,kernstart_addr@ha la r3,kernstart_addr@l(r3) #ifdef CONFIG_PHYS_64BIT diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index 9ce1672..ec50bb9 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -128,7 +128,7 @@ void __init reserve_crashkernel(void) crash_size = resource_size(&crashk_res); -#ifndef CONFIG_RELOCATABLE +#ifndef CONFIG_NONSTATIC_KERNEL if (crashk_res.start != KDUMP_KERNELBASE) printk("Crash kernel location must be 0x%x\n", KDUMP_KERNELBASE); diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 55b4080..eca626e 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2845,7 +2845,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, RELOC(of_platform) = prom_find_machine_type(); prom_printf("Detected machine type: %x\n", RELOC(of_platform)); -#ifndef CONFIG_RELOCATABLE +#ifndef CONFIG_NONSTATIC_KERNEL /* Bail if this is a kdump kernel. */ if (PHYSICAL_START > 0) prom_panic("Error: You can't boot a kdump kernel from OF!\n"); diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c index 5d4e3ff..388b95e 100644 --- a/arch/powerpc/mm/44x_mmu.c +++ b/arch/powerpc/mm/44x_mmu.c @@ -217,7 +217,7 @@ void setup_initial_memory_limit(phys_addr_t first_memblock_base, { u64 size; -#ifndef CONFIG_RELOCATABLE +#ifndef CONFIG_NONSTATIC_KERNEL /* We don't currently support the first MEMBLOCK not mapping 0 * physical on those processors */ |
