€•\cŒsphinx.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$/translations/ko_KR/arch/arm/porting”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”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”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒ>/var/lib/git/docbuild/linux/Documentation/arch/arm/porting.rst”h KubhŒ paragraph”“”)”}”(hŒiTaken from list archive at http://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”h]”(hŒTaken from list archive at ”…””}”(hh¹hžhhŸNh NubhŒ reference”“”)”}”(hŒNhttp://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”h]”hŒNhttp://lists.arm.linux.org.uk/pipermail/linux-arm-kernel/2001-July/004064.html”…””}”(hhÃhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”hÅuh1hÁhh¹ubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒInitial definitions”h]”hŒInitial definitions”…””}”(hhÛhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hhØhžhhŸh¶h Kubh¸)”}”(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:”…””}”(hhéhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hhØhžhubhŒ block_quote”“”)”}”(hŒ)phys = virt - PAGE_OFFSET + PHYS_OFFSET ”h]”h¸)”}”(hŒ'phys = virt - PAGE_OFFSET + PHYS_OFFSET”h]”hŒ'phys = virt - PAGE_OFFSET + PHYS_OFFSET”…””}”(hhýhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khhùubah}”(h]”h ]”h"]”h$]”h&]”uh1h÷hŸh¶h KhhØhžhubeh}”(h]”Œinitial-definitions”ah ]”h"]”Œinitial definitions”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubh¢)”}”(hhh]”(h§)”}”(hŒDecompressor Symbols”h]”hŒDecompressor Symbols”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjhžhhŸh¶h KubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hXoZTEXTADDR Start address of decompressor. There's no point in talking about virtual or physical addresses here, since the MMU will be off at the time when you call the decompressor code. You normally call the kernel at this address to start it booting. This doesn't have to be located in RAM, it can be in flash or other read-only or read-write addressable medium. ”h]”(hŒterm”“”)”}”(hŒ ZTEXTADDR”h]”hŒ ZTEXTADDR”…””}”(hj7hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h Khj1ubhŒ definition”“”)”}”(hhh]”h¸)”}”(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.”…””}”(hjJhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhjGubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhj1ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h Khj,ubj0)”}”(hŒ»ZBSSADDR Start address of zero-initialised work area for the decompressor. This must be pointing at RAM. The decompressor will zero initialise this for you. Again, the MMU will be off. ”h]”(j6)”}”(hŒZBSSADDR”h]”hŒZBSSADDR”…””}”(hjhhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KhjdubjF)”}”(hhh]”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.”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.”…””}”(hjyhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khjvubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjdubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h Khj,hžhubj0)”}”(hX ZRELADDR This is the address where the decompressed kernel will be written, and eventually executed. The following constraint must be valid: __virt_to_phys(TEXTADDR) == ZRELADDR The initial part of the kernel is carefully coded to be position independent. ”h]”(j6)”}”(hŒZRELADDR”h]”hŒZRELADDR”…””}”(hj—hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K(hj“ubjF)”}”(hhh]”(h¸)”}”(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:”…””}”(hj¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K"hj¥ubhø)”}”(hŒ%__virt_to_phys(TEXTADDR) == ZRELADDR ”h]”h¸)”}”(hŒ$__virt_to_phys(TEXTADDR) == ZRELADDR”h]”hŒ$__virt_to_phys(TEXTADDR) == ZRELADDR”…””}”(hjºhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K%hj¶ubah}”(h]”h ]”h"]”h$]”h&]”uh1h÷hŸh¶h K%hj¥ubh¸)”}”(hŒMThe initial part of the kernel is carefully coded to be position independent.”h]”hŒMThe initial part of the kernel is carefully coded to be position independent.”…””}”(hjÎhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K'hj¥ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jEhj“ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K(hj,hžhubj0)”}”(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]”(j6)”}”(hŒ INITRD_PHYS”h]”hŒ INITRD_PHYS”…””}”(hjìhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K-hjèubjF)”}”(hhh]”h¸)”}”(hŒ—Physical address to place the initial RAM disk. Only relevant if you are using the bootpImage stuff (which only works on the old struct param_struct).”h]”hŒ—Physical address to place the initial RAM disk. Only relevant if you are using the bootpImage stuff (which only works on the old struct param_struct).”…””}”(hjýhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K+hjúubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjèubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K-hj,hžhubj0)”}”(hŒ“INITRD_VIRT Virtual address of the initial RAM disk. The following constraint must be valid: __virt_to_phys(INITRD_VIRT) == INITRD_PHYS ”h]”(j6)”}”(hŒ INITRD_VIRT”h]”hŒ INITRD_VIRT”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K3hjubjF)”}”(hhh]”(h¸)”}”(hŒRVirtual address of the initial RAM disk. The following constraint must be valid:”h]”hŒRVirtual address of the initial RAM disk. The following constraint must be valid:”…””}”(hj,hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K0hj)ubhø)”}”(hŒ+__virt_to_phys(INITRD_VIRT) == INITRD_PHYS ”h]”h¸)”}”(hŒ*__virt_to_phys(INITRD_VIRT) == INITRD_PHYS”h]”hŒ*__virt_to_phys(INITRD_VIRT) == INITRD_PHYS”…””}”(hj>hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K3hj:ubah}”(h]”h ]”h"]”h$]”h&]”uh1h÷hŸh¶h K3hj)ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jEhjubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K3hj,hžhubj0)”}”(hŒŒPARAMS_PHYS Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment. ”h]”(j6)”}”(hŒ PARAMS_PHYS”h]”hŒ PARAMS_PHYS”…””}”(hjbhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K8hj^ubjF)”}”(hhh]”h¸)”}”(hŒ~Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment.”h]”hŒ~Physical address of the struct param_struct or tag list, giving the kernel various parameters about its execution environment.”…””}”(hjshžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K6hjpubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhj^ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K8hj,hžhubeh}”(h]”h ]”h"]”h$]”h&]”uh1j*hjhžhhŸh¶h Nubeh}”(h]”Œdecompressor-symbols”ah ]”h"]”Œdecompressor symbols”ah$]”h&]”uh1h¡hh£hžhhŸh¶h Kubh¢)”}”(hhh]”(h§)”}”(hŒKernel Symbols”h]”hŒKernel Symbols”…””}”(hjžhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hj›hžhhŸh¶h K;ubj+)”}”(hhh]”(j0)”}”(hŒ=PHYS_OFFSET Physical start address of the first bank of RAM. ”h]”(j6)”}”(hŒ PHYS_OFFSET”h]”hŒ PHYS_OFFSET”…””}”(hj³hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K>hj¯ubjF)”}”(hhh]”h¸)”}”(hŒ0Physical start address of the first bank of RAM.”h]”hŒ0Physical start address of the first bank of RAM.”…””}”(hjÄhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K>hjÁubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhj¯ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K>hj¬ubj0)”}”(hŒýPAGE_OFFSET Virtual start address of the first bank of RAM. During the kernel boot phase, virtual address PAGE_OFFSET will be mapped to physical address PHYS_OFFSET, along with any other mappings you supply. This should be the same value as TASK_SIZE. ”h]”(j6)”}”(hŒ PAGE_OFFSET”h]”hŒ PAGE_OFFSET”…””}”(hjâhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KDhjÞubjF)”}”(hhh]”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.”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.”…””}”(hjóhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KAhjðubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjÞubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h KDhj¬hžhubj0)”}”(hX:TASK_SIZE The maximum size of a user process in bytes. Since user space always starts at zero, this is the maximum address that a user process can access+1. The user space stack grows down from this address. Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I'll call this the user segment. Anything above TASK_SIZE is common to all processes. I'll call this the kernel segment. (In other words, you can't put IO mappings below TASK_SIZE, and hence PAGE_OFFSET). ”h]”(j6)”}”(hŒ TASK_SIZE”h]”hŒ TASK_SIZE”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KThj ubjF)”}”(hhh]”(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.”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.”…””}”(hj"hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KGhjubh¸)”}”(hŒ·Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I'll call this the user segment.”h]”hŒ¹Any virtual address below TASK_SIZE is deemed to be user process area, and therefore managed dynamically on a process by process basis by the kernel. I’ll call this the user segment.”…””}”(hj0hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KLhjubh¸)”}”(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.”…””}”(hj>hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KPhjubh¸)”}”(hŒS(In other words, you can't put IO mappings below TASK_SIZE, and hence PAGE_OFFSET).”h]”hŒU(In other words, you can’t put IO mappings below TASK_SIZE, and hence PAGE_OFFSET).”…””}”(hjLhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KShjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jEhj ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h KThj¬hžhubj0)”}”(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]”(j6)”}”(hŒTEXTADDR”h]”hŒTEXTADDR”…””}”(hjjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KZhjfubjF)”}”(hhh]”h¸)”}”(hŒîVirtual start address of kernel, normally PAGE_OFFSET + 0x8000. This is where the kernel image ends up. With the latest kernels, it must be located at 32768 bytes into a 128MB region. Previous kernels placed a restriction of 256MB here.”h]”hŒîVirtual start address of kernel, normally PAGE_OFFSET + 0x8000. This is where the kernel image ends up. With the latest kernels, it must be located at 32768 bytes into a 128MB region. Previous kernels placed a restriction of 256MB here.”…””}”(hj{hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KWhjxubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjfubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h KZhj¬hžhubj0)”}”(hŒhDATAADDR Virtual address for the kernel data segment. Must not be defined when using the decompressor. ”h]”(j6)”}”(hŒDATAADDR”h]”hŒDATAADDR”…””}”(hj™hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K^hj•ubjF)”}”(hhh]”h¸)”}”(hŒ^Virtual address for the kernel data segment. Must not be defined when using the decompressor.”h]”hŒ^Virtual address for the kernel data segment. Must not be defined when using the decompressor.”…””}”(hjªhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K]hj§ubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhj•ubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K^hj¬hžhubj0)”}”(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]”(j6)”}”(hŒVMALLOC_START / VMALLOC_END”h]”hŒVMALLOC_START / VMALLOC_END”…””}”(hjÈhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KehjÄubjF)”}”(hhh]”h¸)”}”(hX>Virtual addresses bounding the vmalloc() area. There must not be any static mappings in this area; vmalloc will overwrite them. The addresses must also be in the kernel segment (see above). Normally, the vmalloc() area starts VMALLOC_OFFSET bytes above the last virtual RAM address (found using variable high_memory).”h]”hX>Virtual addresses bounding the vmalloc() area. There must not be any static mappings in this area; vmalloc will overwrite them. The addresses must also be in the kernel segment (see above). Normally, the vmalloc() area starts VMALLOC_OFFSET bytes above the last virtual RAM address (found using variable high_memory).”…””}”(hjÙhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KahjÖubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjÄubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h Kehj¬hžhubj0)”}”(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]”(j6)”}”(hŒVMALLOC_OFFSET”h]”hŒVMALLOC_OFFSET”…””}”(hj÷hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h KkhjóubjF)”}”(hhh]”h¸)”}”(hŒÿOffset normally incorporated into VMALLOC_START to provide a hole between virtual RAM and the vmalloc area. We do this to allow out of bounds memory accesses (eg, something writing off the end of the mapped memory map) to be caught. Normally set to 8MB.”h]”hŒÿOffset normally incorporated into VMALLOC_START to provide a hole between virtual RAM and the vmalloc area. We do this to allow out of bounds memory accesses (eg, something writing off the end of the mapped memory map) to be caught. Normally set to 8MB.”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khhjubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjóubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h Kkhj¬hžhubeh}”(h]”h ]”h"]”h$]”h&]”uh1j*hj›hžhhŸh¶h Nubeh}”(h]”Œkernel-symbols”ah ]”h"]”Œkernel symbols”ah$]”h&]”uh1h¡hh£hžhhŸh¶h K;ubh¢)”}”(hhh]”(h§)”}”(hŒArchitecture Specific Macros”h]”hŒArchitecture Specific Macros”…””}”(hj3hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hj0hžhhŸh¶h Knubj+)”}”(hhh]”(j0)”}”(hXÖBOOT_MEM(pram,pio,vio) `pram` specifies the physical start address of RAM. Must always be present, and should be the same as PHYS_OFFSET. `pio` is the physical address of an 8MB region containing IO for use with the debugging macros in arch/arm/kernel/debug-armv.S. `vio` is the virtual address of the 8MB debugging region. It is expected that the debugging region will be re-initialised by the architecture specific code later in the code (via the MAPIO function). ”h]”(j6)”}”(hŒBOOT_MEM(pram,pio,vio)”h]”hŒBOOT_MEM(pram,pio,vio)”…””}”(hjHhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K{hjDubjF)”}”(hhh]”(h¸)”}”(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”…””}”(hj_hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j]hjYubhŒm specifies the physical start address of RAM. Must always be present, and should be the same as PHYS_OFFSET.”…””}”(hjYhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KqhjVubh¸)”}”(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]”(j^)”}”(hŒ`pio`”h]”hŒpio”…””}”(hj{hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j]hjwubhŒz is the physical address of an 8MB region containing IO for use with the debugging macros in arch/arm/kernel/debug-armv.S.”…””}”(hjwhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KthjVubh¸)”}”(hŒ9`vio` is the virtual address of the 8MB debugging region.”h]”(j^)”}”(hŒ`vio`”h]”hŒvio”…””}”(hj—hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j]hj“ubhŒ4 is the virtual address of the 8MB debugging region.”…””}”(hj“hžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KwhjVubh¸)”}”(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).”…””}”(hj¯hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KyhjVubeh}”(h]”h ]”h"]”h$]”h&]”uh1jEhjDubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K{hjAubj0)”}”(hŒ*BOOT_PARAMS Same as, and see PARAMS_PHYS. ”h]”(j6)”}”(hŒ BOOT_PARAMS”h]”hŒ BOOT_PARAMS”…””}”(hjÍhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K~hjÉubjF)”}”(hhh]”h¸)”}”(hŒSame as, and see PARAMS_PHYS.”h]”hŒSame as, and see PARAMS_PHYS.”…””}”(hjÞhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K~hjÛubah}”(h]”h ]”h"]”h$]”h&]”uh1jEhjÉubeh}”(h]”h ]”h"]”h$]”h&]”uh1j/hŸh¶h K~hjAhžhubj0)”}”(hŒYFIXUP(func) Machine specific fixups, run before memory subsystems have been initialised. ”h]”(j6)”}”(hŒ FIXUP(func)”h]”hŒ FIXUP(func)”…””}”(hjühžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j5hŸh¶h K‚hjøubjF)”}”(hhh]”h¸)”}”(hŒLMachine specific fixups, run before memory subsystems have been initialised.”h]”hŒLMachine specific fixups, run before memory subsystems have been 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