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72 Commits

Author SHA1 Message Date
Achilleas Anagnostopoulos
1d5d1dc3ec acpi: implement VM entity lookup and visit wrappers 2017-12-04 06:35:26 +00:00
Achilleas Anagnostopoulos
64f3dae485 acpi: define VM type and structs to maintain execution state 2017-12-04 06:35:26 +00:00
Achilleas Anagnostopoulos
692155b44b acpi: refine post-parse entity processing rules 
This commit updates the post-parse step so that:
- the visitor not longer recurses into method bodies. Since code inside
  methods may potentially generate dynamic/scoped entities or even use
  conditional invocations (if CondRefOf(X) { X(...) }), symbol resolution
  will be deferred to the AML interpreter.
- parent-child relationships between entities are checked and updated if
  not properly specified
 2017-12-03 10:54:21 +00:00
Achilleas Anagnostopoulos
70c798f40a acpi: add pre-process step to capture arg counts for all function decls 
Since the ACPI standard allows forward function declarations this step
is required so we can properly parse the argument list for function
invocations. Contrary to other AML entities, method invocations do not
include any sort of pkgLength information so unless we track the
expected argument count for each function, our parser will not be able
to figure out where the argument list ends.
 2017-12-03 10:21:40 +00:00
Achilleas Anagnostopoulos
7983394390 acpi: implement resolver interface for methodInvocation entities 2017-12-03 10:17:41 +00:00
Achilleas Anagnostopoulos
0a05164703 acpi: change scopeVisit to visit entities in a visited entity's arglist 2017-12-01 08:01:17 +00:00
Achilleas Anagnostopoulos
d9bd6f104e acpi: fix linter warnings for unhandled errors in AML parser 2017-11-27 07:15:11 +00:00
Achilleas Anagnostopoulos
61a033e2ad acpi: tweak parser and add tests for parser errors 2017-09-30 16:40:53 +01:00
Achilleas Anagnostopoulos
d020045887 acpi: tag entities with the handle of the table that defines them 
This allows us to implement the Unload opcode which given a handle,
removes all entities that are tagged by it.
 2017-09-30 16:36:26 +01:00
Achilleas Anagnostopoulos
2a84c75d8e acpi: implement AML parser for all AML opcodes in the ACPI 6.2 spec 2017-09-30 16:36:22 +01:00
Achilleas Anagnostopoulos
4dd7c0b077 acpi: implement functions for working with AML scopes 
The scope resolution rules are specified in page 252 of the ACPI 6.2
spec.
 2017-09-30 16:25:34 +01:00
Achilleas Anagnostopoulos
130e11507c acpi: define structs for basic AML entities 2017-09-30 16:25:29 +01:00
Achilleas Anagnostopoulos
5171822ba6 acpi: define mappings and helpers for AML opcodes 2017-09-30 14:08:55 +01:00
Achilleas Anagnostopoulos
93125caa8a acpi: implement memory-based reader for AML byte-code streams 2017-09-30 13:45:30 +01:00
Achilleas Anagnostopoulos
7d959af0a9 acpi: import and register ACPI driver with hal 2017-08-28 07:28:31 +01:00
Achilleas Anagnostopoulos
78d5fac550 acpi: probe for RSDT and enumerate/map other ACPI tables (inc. DSDT) 2017-08-28 07:28:31 +01:00
Achilleas Anagnostopoulos
49dfc5c9de acpi: define structs for standard header and various ACPI tables 2017-08-28 07:28:27 +01:00
Achilleas Anagnostopoulos
7bcaf0ee8d vmm: implement identity mapping function for contiguous physical mem regions 
vmm.IdentityMapRegion can be used by device drivers that want to
establish an identity mapping for a contiguous physical memory block in
order to access some hardware or table.
 2017-08-28 07:28:04 +01:00
Achilleas Anagnostopoulos
0a271b206b pmm: implement FrameFromAddress 
This is equivalent to vmm.PageFromAddress but returns back a pmm.Frame
 2017-08-28 07:28:04 +01:00
Achilleas Anagnostopoulos
d17298acaa vga_text: Map EGA color indices to correct DAC entries for the VGA hw 2017-08-19 10:33:38 +01:00
Achilleas Anagnostopoulos
b53912757c Refactor hal code to use preferred driver detection order 2017-07-18 08:27:50 +01:00
Achilleas Anagnostopoulos
1ef27b3226 Update device drivers to use the device.RegisterDriver 2017-07-18 08:26:56 +01:00
Achilleas Anagnostopoulos
d180348116 Define DriverInfo and registration helpers 2017-07-18 08:23:43 +01:00
Achilleas Anagnostopoulos
37e32d9960 Provide correct implementation for cpu.FlushTLBEntry 
The previous version worked under qemu (or qemu does not implement TLB
caching) but caused an unrecoverable page fault when running under
virtualbox.
 2017-07-15 17:25:04 +01:00
Achilleas Anagnostopoulos
66d471f442 Defer kernel panic when Kmain returns 2017-07-14 08:05:59 +01:00
Achilleas Anagnostopoulos
ccba8877ce Enable support for deferred calls 2017-07-14 08:05:54 +01:00
Achilleas Anagnostopoulos
eaeae85600 Implement LogoSetter interface for vesa fb driver 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
c7fc9f0ac9 Add gopher logos (64, 96 and 128 pixels tall) 
The gopher images were obtained from: https://github.com/golang-samples/gopher-vector
 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
4af2ed62a0 Display the best-fit logo on logo-capable console devices 
Logos can be disabled by passing the "consoleLogo=off" boot command line
parameter.
 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
cb7ae66556 Define LogoSetter interface and BestFit selection helper 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
a5c6828fc2 Create tool for converting images to compatible console logo files 
The tool processes an image and converts it to a logo.Image struct which
can be assigned to a logo-capable console.
 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
540f288e61 Select appropriate font for console devices with font support 
The hal package automatically selects the best font from the list of
available fonts based on the console dimensions and the font priorities. The font
selection can be overriden by passing the "consoleFont" boot commandline
parameter to the kernel (e.g. consoleFont=terminus8x16)
 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
d71c4c1eea Add 8x16, 10x18 and 14x28 fonts based on the terminus font 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
72feb11acb Document exported symbols 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
f4f3745073 Extend vesa driver support to 15 and 16bpp framebuffers 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
f02c767257 Extend vesa driver to support 24 and 32 bpp 2017-07-13 23:35:20 +01:00
Achilleas Anagnostopoulos
13ba4bbbed Implement vesa console driver for 8bpp framebuffers 2017-07-13 23:35:10 +01:00
Achilleas Anagnostopoulos
cbf0c82702 Change Dimensions() signature to support querying for characters or pixels 2017-07-13 22:06:50 +01:00
Achilleas Anagnostopoulos
952d0bf4a5 Define FontSetter interface, the Font type and helper methods 
The helper methods provide support for selecting the best-fit font for
the console dimensions and for looking up a font by name.
 2017-07-13 22:06:50 +01:00
Achilleas Anagnostopoulos
6195f3fc3b Setup a more granular PDT based on the ELF image section addresses 2017-07-13 06:35:22 +01:00
Achilleas Anagnostopoulos
cc4364f55c Pass the virtual page offset for the kernel to kernel.Kmain 
Ths page offset is defined in arch/XXX/constants.inc and needs to be
passed to the kernel so we can correctly calculate the physical frame
addresses that correspond to the ELF section virtual memory addresses.
 2017-07-13 00:08:40 +01:00
Achilleas Anagnostopoulos
a2d58f8949 Switch to a visitor-based no-alloc implementation for fetching ELF sections 
This change is required as the code to create a new PDT should execute
before the Go allocator is bootstrapped.
 2017-07-13 00:08:40 +01:00
Achilleas Anagnostopoulos
fdd5611220 Fix bug in the ASM code used to load the PDT to the CR2 register 
The previous implementation in Go assembly did not translate to the
correct assembly instructions for loading CR2
 2017-07-13 00:08:40 +01:00
Achilleas Anagnostopoulos
9d2e53bac4 Redirect runtime.init to an empty stub 2017-07-13 00:08:35 +01:00
Achilleas Anagnostopoulos
a79be7c268 Support parsing of 64-bit ELF section tags off from the multiboot data 2017-07-10 19:08:28 +01:00
Achilleas Anagnostopoulos
af9613e336 Support extraction of boot cmdline off the multiboot data 2017-07-10 19:05:49 +01:00
Achilleas Anagnostopoulos
5ef344010b Support parsing of framebuffer color info out of the multiboot data 2017-07-10 19:05:01 +01:00
Achilleas Anagnostopoulos
13ef4cd08d Map physical address of the vga text console framebuffer in DriverInit 
Currently, the kernel can write to 0xb80000 because this is part of the
initial identify mapping set up by the rt0 code. When we establish new
mappings for the kernel using its real VMA address then writes to the
framebuffer will cause a page fault unless we explicitly map it.
 2017-07-08 22:18:24 +01:00
Achilleas Anagnostopoulos
8ac2ba82cc Implement function for mapping a contiguous physical memory region 
The MapRegion function can be used by device drivers to ensure that they
can access memory mapped by the various devices.
 2017-07-08 22:17:34 +01:00
Achilleas Anagnostopoulos
1b697fd125 Pass PrefixWriter with driver name and version to DriverInit calls 2017-07-08 22:09:19 +01:00