€•AdŒsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ$/translations/zh_CN/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/zh_TW/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/it_IT/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/ja_JP/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/ko_KR/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒPortuguese (Brazilian)”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/pt_BR/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh–sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ$/translations/sp_SP/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒPorting”h]”hŒPorting”…””}”(hh¼h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhh·h²hh³Œ>/var/lib/git/docbuild/linux/Documentation/arch/arm/porting.rst”h´KubhŒ paragraph”“”)”}”(hŒiTaken from list archive at http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”h]”(hŒTaken from list archive at ”…””}”(hhÍh²hh³Nh´NubhŒ reference”“”)”}”(hŒNhttp://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”h]”hŒNhttp://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”…””}”(hh×h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”hÙuh1hÕhhÍubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khh·h²hubh¶)”}”(hhh]”(h»)”}”(hŒInitial definitions”h]”hŒInitial definitions”…””}”(hhïh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhhìh²hh³hÊh´KubhÌ)”}”(hŒÑThe following symbol definitions rely on you knowing the translation that __virt_to_phys() does for your machine. This macro converts the passed virtual address to a physical address. Normally, it is simply:”h]”hŒÑThe following symbol definitions rely on you knowing the translation that __virt_to_phys() does for your machine. This macro converts the passed virtual address to a physical address. Normally, it is simply:”…””}”(hhýh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K hhìh²hubhŒ block_quote”“”)”}”(hŒ)phys = virt - PAGE_OFFSET + PHYS_OFFSET ”h]”hÌ)”}”(hŒ'phys = virt - PAGE_OFFSET + PHYS_OFFSET”h]”hŒ'phys = virt - PAGE_OFFSET + PHYS_OFFSET”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khj ubah}”(h]”h ]”h"]”h$]”h&]”uh1j h³hÊh´Khhìh²hubeh}”(h]”Œinitial-definitions”ah ]”h"]”Œinitial definitions”ah$]”h&]”uh1hµhh·h²hh³hÊh´Kubh¶)”}”(hhh]”(h»)”}”(hŒDecompressor Symbols”h]”hŒDecompressor Symbols”…””}”(hj0h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj-h²hh³hÊh´KubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hXoZTEXTADDR Start address of decompressor. There's no point in talking about virtual or physical addresses here, since the MMU will be off at the time when you call the decompressor code. You normally call the kernel at this address to start it booting. This doesn't have to be located in RAM, it can be in flash or other read-only or read-write addressable medium. ”h]”(hŒterm”“”)”}”(hŒ ZTEXTADDR”h]”hŒ ZTEXTADDR”…””}”(hjKh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KhjEubhŒ definition”“”)”}”(hhh]”hÌ)”}”(hXdStart address of decompressor. There's no point in talking about virtual or physical addresses here, since the MMU will be off at the time when you call the decompressor code. You normally call the kernel at this address to start it booting. This doesn't have to be located in RAM, it can be in flash or other read-only or read-write addressable medium.”h]”hXhStart address of decompressor. There’s no point in talking about virtual or physical addresses here, since the MMU will be off at the time when you call the decompressor code. You normally call the kernel at this address to start it booting. This doesn’t have to be located in RAM, it can be in flash or other read-only or read-write addressable medium.”…””}”(hj^h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khj[ubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjEubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´Khj@ubjD)”}”(hŒ»ZBSSADDR Start address of zero-initialised work area for the decompressor. This must be pointing at RAM. The decompressor will zero initialise this for you. Again, the MMU will be off. ”h]”(jJ)”}”(hŒZBSSADDR”h]”hŒZBSSADDR”…””}”(hj|h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KhjxubjZ)”}”(hhh]”hÌ)”}”(hŒ±Start address of zero-initialised work area for the decompressor. This must be pointing at RAM. The decompressor will zero initialise this for you. Again, the MMU will be off.”h]”hŒ±Start address of zero-initialised work area for the decompressor. This must be pointing at RAM. The decompressor will zero initialise this for you. Again, the MMU will be off.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KhjŠubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjxubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´Khj@h²hubjD)”}”(hX ZRELADDR This is the address where the decompressed kernel will be written, and eventually executed. The following constraint must be valid: __virt_to_phys(TEXTADDR) == ZRELADDR The initial part of the kernel is carefully coded to be position independent. ”h]”(jJ)”}”(hŒZRELADDR”h]”hŒZRELADDR”…””}”(hj«h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K(hj§ubjZ)”}”(hhh]”(hÌ)”}”(hŒ„This is the address where the decompressed kernel will be written, and eventually executed. The following constraint must be valid:”h]”hŒ„This is the address where the decompressed kernel will be written, and eventually executed. The following constraint must be valid:”…””}”(hj¼h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K"hj¹ubj )”}”(hŒ%__virt_to_phys(TEXTADDR) == ZRELADDR ”h]”hÌ)”}”(hŒ$__virt_to_phys(TEXTADDR) == ZRELADDR”h]”hŒ$__virt_to_phys(TEXTADDR) == ZRELADDR”…””}”(hjÎh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K%hjÊubah}”(h]”h ]”h"]”h$]”h&]”uh1j h³hÊh´K%hj¹ubhÌ)”}”(hŒMThe initial part of the kernel is carefully coded to be position independent.”h]”hŒMThe initial part of the kernel is carefully coded to be position independent.”…””}”(hjâh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K'hj¹ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jYhj§ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K(hj@h²hubjD)”}”(hŒ¤INITRD_PHYS Physical address to place the initial RAM disk. Only relevant if you are using the bootpImage stuff (which only works on the old struct param_struct). ”h]”(jJ)”}”(hŒ INITRD_PHYS”h]”hŒ INITRD_PHYS”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K-hjüubjZ)”}”(hhh]”hÌ)”}”(hŒ—Physical address to place the initial RAM disk. Only relevant if you are using the bootpImage stuff (which only works on the old struct param_struct).”h]”hŒ—Physical address to place the initial RAM disk. Only relevant if you are using the bootpImage stuff (which only works on the old struct param_struct).”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K+hjubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjüubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K-hj@h²hubjD)”}”(hŒ“INITRD_VIRT Virtual address of the initial RAM disk. The following constraint must be valid: __virt_to_phys(INITRD_VIRT) == INITRD_PHYS ”h]”(jJ)”}”(hŒ INITRD_VIRT”h]”hŒ INITRD_VIRT”…””}”(hj/h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K3hj+ubjZ)”}”(hhh]”(hÌ)”}”(hŒRVirtual address of the initial RAM disk. The following constraint must be valid:”h]”hŒRVirtual address of the initial RAM disk. The following constraint must be valid:”…””}”(hj@h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K0hj=ubj )”}”(hŒ+__virt_to_phys(INITRD_VIRT) == INITRD_PHYS ”h]”hÌ)”}”(hŒ*__virt_to_phys(INITRD_VIRT) == INITRD_PHYS”h]”hŒ*__virt_to_phys(INITRD_VIRT) == INITRD_PHYS”…””}”(hjRh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K3hjNubah}”(h]”h ]”h"]”h$]”h&]”uh1j h³hÊh´K3hj=ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jYhj+ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K3hj@h²hubjD)”}”(hŒŒPARAMS_PHYS Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment. ”h]”(jJ)”}”(hŒ PARAMS_PHYS”h]”hŒ PARAMS_PHYS”…””}”(hjvh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K8hjrubjZ)”}”(hhh]”hÌ)”}”(hŒ~Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment.”h]”hŒ~Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment.”…””}”(hj‡h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K6hj„ubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjrubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K8hj@h²hubeh}”(h]”h ]”h"]”h$]”h&]”uh1j>hj-h²hh³hÊh´Nubeh}”(h]”Œdecompressor-symbols”ah ]”h"]”Œdecompressor symbols”ah$]”h&]”uh1hµhh·h²hh³hÊh´Kubh¶)”}”(hhh]”(h»)”}”(hŒKernel Symbols”h]”hŒKernel Symbols”…””}”(hj²h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhj¯h²hh³hÊh´K;ubj?)”}”(hhh]”(jD)”}”(hŒ=PHYS_OFFSET Physical start address of the first bank of RAM. ”h]”(jJ)”}”(hŒ PHYS_OFFSET”h]”hŒ PHYS_OFFSET”…””}”(hjÇh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K>hjÃubjZ)”}”(hhh]”hÌ)”}”(hŒ0Physical start address of the first bank of RAM.”h]”hŒ0Physical start address of the first bank of RAM.”…””}”(hjØh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K>hjÕubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjÃubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K>hjÀubjD)”}”(hŒýPAGE_OFFSET Virtual start address of the first bank of RAM. During the kernel boot phase, virtual address PAGE_OFFSET will be mapped to physical address PHYS_OFFSET, along with any other mappings you supply. This should be the same value as TASK_SIZE. ”h]”(jJ)”}”(hŒ PAGE_OFFSET”h]”hŒ PAGE_OFFSET”…””}”(hjöh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KDhjòubjZ)”}”(hhh]”hÌ)”}”(hŒðVirtual start address of the first bank of RAM. During the kernel boot phase, virtual address PAGE_OFFSET will be mapped to physical address PHYS_OFFSET, along with any other mappings you supply. This should be the same value as TASK_SIZE.”h]”hŒðVirtual start address of the first bank of RAM. During the kernel boot phase, virtual address PAGE_OFFSET will be mapped to physical address PHYS_OFFSET, along with any other mappings you supply. This should be the same value as TASK_SIZE.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KAhjubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjòubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KDhjÀh²hubjD)”}”(hX:TASK_SIZE The maximum size of a user process in bytes. Since user space always starts at zero, this is the maximum address that a user process can access+1. The user space stack grows down from this address. Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I'll call this the user segment. Anything above TASK_SIZE is common to all processes. I'll call this the kernel segment. (In other words, you can't put IO mappings below TASK_SIZE, and hence PAGE_OFFSET). ”h]”(jJ)”}”(hŒ TASK_SIZE”h]”hŒ TASK_SIZE”…””}”(hj%h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KThj!ubjZ)”}”(hhh]”(hÌ)”}”(hŒÇThe maximum size of a user process in bytes. Since user space always starts at zero, this is the maximum address that a user process can access+1. The user space stack grows down from this address.”h]”hŒÇThe maximum size of a user process in bytes. Since user space always starts at zero, this is the maximum address that a user process can access+1. The user space stack grows down from this address.”…””}”(hj6h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KGhj3ubhÌ)”}”(hŒ·Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I'll call this the user segment.”h]”hŒ¹Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I’ll call this the user segment.”…””}”(hjDh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KLhj3ubhÌ)”}”(hŒXAnything above TASK_SIZE is common to all processes. I'll call this the kernel segment.”h]”hŒZAnything above TASK_SIZE is common to all processes. I’ll call this the kernel segment.”…””}”(hjRh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KPhj3ubhÌ)”}”(hŒS(In other words, you can't put IO mappings below TASK_SIZE, and hence PAGE_OFFSET).”h]”hŒU(In other words, you can’t put IO mappings below TASK_SIZE, and hence PAGE_OFFSET).”…””}”(hj`h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KShj3ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jYhj!ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KThjÀh²hubjD)”}”(hŒøTEXTADDR Virtual start address of kernel, normally PAGE_OFFSET + 0x8000. This is where the kernel image ends up. With the latest kernels, it must be located at 32768 bytes into a 128MB region. Previous kernels placed a restriction of 256MB here. ”h]”(jJ)”}”(hŒTEXTADDR”h]”hŒTEXTADDR”…””}”(hj~h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KZhjzubjZ)”}”(hhh]”hÌ)”}”(hŒîVirtual start address of kernel, normally PAGE_OFFSET + 0x8000. This is where the kernel image ends up. With the latest kernels, it must be located at 32768 bytes into a 128MB region. Previous kernels placed a restriction of 256MB here.”h]”hŒîVirtual start address of kernel, normally PAGE_OFFSET + 0x8000. This is where the kernel image ends up. With the latest kernels, it must be located at 32768 bytes into a 128MB region. Previous kernels placed a restriction of 256MB here.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KWhjŒubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjzubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KZhjÀh²hubjD)”}”(hŒhDATAADDR Virtual address for the kernel data segment. Must not be defined when using the decompressor. ”h]”(jJ)”}”(hŒDATAADDR”h]”hŒDATAADDR”…””}”(hj­h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K^hj©ubjZ)”}”(hhh]”hÌ)”}”(hŒ^Virtual address for the kernel data segment. Must not be defined when using the decompressor.”h]”hŒ^Virtual address for the kernel data segment. Must not be defined when using the decompressor.”…””}”(hj¾h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K]hj»ubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhj©ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K^hjÀh²hubjD)”}”(hX[VMALLOC_START / VMALLOC_END Virtual addresses bounding the vmalloc() area. There must not be any static mappings in this area; vmalloc will overwrite them. The addresses must also be in the kernel segment (see above). Normally, the vmalloc() area starts VMALLOC_OFFSET bytes above the last virtual RAM address (found using variable high_memory). ”h]”(jJ)”}”(hŒVMALLOC_START / VMALLOC_END”h]”hŒVMALLOC_START / VMALLOC_END”…””}”(hjÜh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KehjØubjZ)”}”(hhh]”hÌ)”}”(hX>Virtual addresses bounding the vmalloc() area. There must not be any static mappings in this area; vmalloc will overwrite them. The addresses must also be in the kernel segment (see above). Normally, the vmalloc() area starts VMALLOC_OFFSET bytes above the last virtual RAM address (found using variable high_memory).”h]”hX>Virtual addresses bounding the vmalloc() area. There must not be any static mappings in this area; vmalloc will overwrite them. The addresses must also be in the kernel segment (see above). Normally, the vmalloc() area starts VMALLOC_OFFSET bytes above the last virtual RAM address (found using variable high_memory).”…””}”(hjíh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kahjêubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjØubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KehjÀh²hubjD)”}”(hXVMALLOC_OFFSET Offset normally incorporated into VMALLOC_START to provide a hole between virtual RAM and the vmalloc area. We do this to allow out of bounds memory accesses (eg, something writing off the end of the mapped memory map) to be caught. Normally set to 8MB. ”h]”(jJ)”}”(hŒVMALLOC_OFFSET”h]”hŒVMALLOC_OFFSET”…””}”(hj h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KkhjubjZ)”}”(hhh]”hÌ)”}”(hŒÿOffset normally incorporated into VMALLOC_START to provide a hole between virtual RAM and the vmalloc area. We do this to allow out of bounds memory accesses (eg, something writing off the end of the mapped memory map) to be caught. Normally set to 8MB.”h]”hŒÿOffset normally incorporated into VMALLOC_START to provide a hole between virtual RAM and the vmalloc area. We do this to allow out of bounds memory accesses (eg, something writing off the end of the mapped memory map) to be caught. Normally set to 8MB.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khhjubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KkhjÀh²hubeh}”(h]”h ]”h"]”h$]”h&]”uh1j>hj¯h²hh³hÊh´Nubeh}”(h]”Œkernel-symbols”ah ]”h"]”Œkernel symbols”ah$]”h&]”uh1hµhh·h²hh³hÊh´K;ubh¶)”}”(hhh]”(h»)”}”(hŒArchitecture Specific Macros”h]”hŒArchitecture Specific Macros”…””}”(hjGh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hºhjDh²hh³hÊh´Knubj?)”}”(hhh]”(jD)”}”(hXÖBOOT_MEM(pram,pio,vio) `pram` specifies the physical start address of RAM. Must always be present, and should be the same as PHYS_OFFSET. `pio` is the physical address of an 8MB region containing IO for use with the debugging macros in arch/arm/kernel/debug-armv.S. `vio` is the virtual address of the 8MB debugging region. It is expected that the debugging region will be re-initialised by the architecture specific code later in the code (via the MAPIO function). ”h]”(jJ)”}”(hŒBOOT_MEM(pram,pio,vio)”h]”hŒBOOT_MEM(pram,pio,vio)”…””}”(hj\h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K{hjXubjZ)”}”(hhh]”(hÌ)”}”(hŒs`pram` specifies the physical start address of RAM. Must always be present, and should be the same as PHYS_OFFSET.”h]”(hŒtitle_reference”“”)”}”(hŒ`pram`”h]”hŒpram”…””}”(hjsh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jqhjmubhŒm specifies the physical start address of RAM. Must always be present, and should be the same as PHYS_OFFSET.”…””}”(hjmh²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KqhjjubhÌ)”}”(hŒ`pio` is the physical address of an 8MB region containing IO for use with the debugging macros in arch/arm/kernel/debug-armv.S.”h]”(jr)”}”(hŒ`pio`”h]”hŒpio”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jqhj‹ubhŒz is the physical address of an 8MB region containing IO for use with the debugging macros in arch/arm/kernel/debug-armv.S.”…””}”(hj‹h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KthjjubhÌ)”}”(hŒ9`vio` is the virtual address of the 8MB debugging region.”h]”(jr)”}”(hŒ`vio`”h]”hŒvio”…””}”(hj«h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jqhj§ubhŒ4 is the virtual address of the 8MB debugging region.”…””}”(hj§h²hh³Nh´Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´KwhjjubhÌ)”}”(hŒIt is expected that the debugging region will be re-initialised by the architecture specific code later in the code (via the MAPIO function).”h]”hŒIt is expected that the debugging region will be re-initialised by the architecture specific code later in the code (via the MAPIO function).”…””}”(hjÃh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Kyhjjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jYhjXubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K{hjUubjD)”}”(hŒ*BOOT_PARAMS Same as, and see PARAMS_PHYS. ”h]”(jJ)”}”(hŒ BOOT_PARAMS”h]”hŒ BOOT_PARAMS”…””}”(hjáh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K~hjÝubjZ)”}”(hhh]”hÌ)”}”(hŒSame as, and see PARAMS_PHYS.”h]”hŒSame as, and see PARAMS_PHYS.”…””}”(hjòh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K~hjïubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjÝubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K~hjUh²hubjD)”}”(hŒYFIXUP(func) Machine specific fixups, run before memory subsystems have been initialised. ”h]”(jJ)”}”(hŒ FIXUP(func)”h]”hŒ FIXUP(func)”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K‚hj ubjZ)”}”(hhh]”hÌ)”}”(hŒLMachine specific fixups, run before memory subsystems have been initialised.”h]”hŒLMachine specific fixups, run before memory subsystems have been initialised.”…””}”(hj!h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´Khjubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhj ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K‚hjUh²hubjD)”}”(hŒZMAPIO(func) Machine specific function to map IO areas (including the debug region above). ”h]”(jJ)”}”(hŒ MAPIO(func)”h]”hŒ MAPIO(func)”…””}”(hj?h²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´K†hj;ubjZ)”}”(hhh]”hÌ)”}”(hŒMMachine specific function to map IO areas (including the debug region above).”h]”hŒMMachine specific function to map IO areas (including the debug region above).”…””}”(hjPh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K…hjMubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhj;ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´K†hjUh²hubjD)”}”(hŒAINITIRQ(func) Machine specific function to initialise interrupts.”h]”(jJ)”}”(hŒ INITIRQ(func)”h]”hŒ INITIRQ(func)”…””}”(hjnh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1jIh³hÊh´KˆhjjubjZ)”}”(hhh]”hÌ)”}”(hŒ3Machine specific function to initialise interrupts.”h]”hŒ3Machine specific function to initialise interrupts.”…””}”(hjh²hh³Nh´Nubah}”(h]”h ]”h"]”h$]”h&]”uh1hËh³hÊh´K‰hj|ubah}”(h]”h ]”h"]”h$]”h&]”uh1jYhjjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jCh³hÊh´KˆhjUh²hubeh}”(h]”h ]”h"]”h$]”h&]”uh1j>hjDh²hh³hÊh´Nubeh}”(h]”Œarchitecture-specific-macros”ah ]”h"]”Œarchitecture specific macros”ah$]”h&]”uh1hµhh·h²hh³hÊh´Knubeh}”(h]”Œporting”ah ]”h"]”Œporting”ah$]”h&]”uh1hµhhh²hh³hÊh´Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”hÊuh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(hºNŒ generator”NŒ datestamp”NŒ source_link”NŒ source_url”NŒ toc_backlinks”Œentry”Œfootnote_backlinks”KŒ sectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒ strip_classes”NŒ report_level”KŒ halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ traceback”ˆŒinput_encoding”Œ utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”jÒŒerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œ language_code”Œen”Œrecord_dependencies”NŒconfig”NŒ id_prefix”hŒauto_id_prefix”Œid”Œ dump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”hÊŒ _destination”NŒ _config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒ raw_enabled”KŒline_length_limit”M'Œpep_references”NŒ pep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒ rfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œ smart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œ docinfo_xform”KŒsectsubtitle_xform”‰Œ image_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(j¬j©j*j'j¬j©jAj>j¤j¡uŒ nametypes”}”(j¬‰j*‰j¬‰jA‰j¤‰uh}”(j©h·j'hìj©j-j>j¯j¡jDuŒ footnote_refs”}”Œ citation_refs”}”Œ autofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ footnotes”]”Œ citations”]”Œautofootnote_start”KŒsymbol_footnote_start”KŒ id_counter”Œ collections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œ transformer”NŒ include_log”]”Œ decoration”Nh²hub.