Last change
on this file since f7842ef was a4bd537, checked in by Petr Pavlu <setup@…>, 6 years ago |
arm64: Add support for the architecture
This changeset adds basic support to run HelenOS on AArch64, targeting
the QEMU virt platform.
Boot:
- Boot relies on the EDK II firmware, GRUB2 for EFI and the HelenOS
bootloader (UEFI application). EDK II loads GRUB2 from a CD, GRUB2
loads the HelenOS bootloader (via UEFI) which loads OS components.
- UEFI applications use the PE/COFF format and must be relocatable. The
first problem is solved by manually having the PE/COFF headers and
tables written in assembler. The relocatable requirement is addressed
by compiling the code with -fpic and having the bootloader relocate
itself at its startup.
Kernel:
- Kernel code for AArch64 consists mostly of stubbing out various
architecture-specific hooks: virtual memory management, interrupt and
exception handling, context switching (including FPU lazy switching),
support for virtual timer, atomic sequences and barriers, cache and
TLB maintenance, thread and process initialization.
- The patch adds a kernel driver for GICv2 (interrupt controller).
- The PL011 kernel driver is extended to allow userspace to take
ownership of the console.
- The current code is not able to dynamically obtain information about
available devices on the underlying machine. The port instead
implements a machine-func interface similar to the one implemented by
arm32. It defines a machine for the QEMU AArch64 virt platform. The
configuration (device addresses and IRQ numbers) is then baked into
the machine definition.
User space:
- Uspace code for AArch64 similarly mostly implements
architecture-specific hooks: context saving/restoring, syscall
support, TLS support.
The patchset allows to boot the system but user interaction with the OS
is not yet possible.
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File size:
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1 | /* Definitions of modules and its relations for generating Doxygen documentation */
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2 |
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3 | /** @defgroup abi abi
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4 | * @brief Header files shared by the kernel and uspace
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5 | */
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6 |
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7 | /** @addtogroup bits _bits
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8 | * @ingroup abi
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9 | */
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10 |
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11 | /**
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12 | * @defgroup abi_generic generic
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13 | * @ingroup abi
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14 | */
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15 |
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16 | /**
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17 | * @defgroup abi_abs32le abs32le
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18 | * @ingroup abi
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19 | */
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20 |
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21 | /**
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22 | * @defgroup abi_amd64 amd64
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23 | * @ingroup abi
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24 | */
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25 |
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26 | /**
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27 | * @defgroup abi_arm32 arm32
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28 | * @ingroup abi
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29 | */
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30 |
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31 | /**
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32 | * @defgroup abi_arm64 arm64
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33 | * @ingroup abi
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34 | */
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35 |
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36 | /**
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37 | * @defgroup abi_ia32 ia32
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38 | * @ingroup abi
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39 | */
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40 |
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41 | /**
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42 | * @defgroup abi_ia64 ia64
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43 | * @ingroup abi
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44 | */
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45 |
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46 | /**
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47 | * @defgroup abi_mips32 mips32
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48 | * @ingroup abi
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49 | */
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50 |
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51 | /**
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52 | * @defgroup abi_ppc32 ppc32
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53 | * @ingroup abi
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54 | */
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55 |
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56 | /**
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57 | * @defgroup abi_riscv64 riscv64
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58 | * @ingroup abi
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59 | */
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60 |
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61 | /**
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62 | * @defgroup abi_sparc64 sparc64
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63 | * @ingroup abi
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64 | */
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65 |
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66 | /**
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67 | * @defgroup abi_genarch genarch
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68 | * @ingroup abi
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69 | */
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