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149 Commits

Author SHA1 Message Date
Martin Whitaker
da7829d4c3 Ensure the ACPI tables and local APIC are mapped into an accessible region. 
We only map the first 4GB of physical address space, so if the ACPI tables
or local APIC are located above 4GB, or are overlaid when we remap something
else (e.g. the video frame buffer), we need to map them to somewhere we can
access. The ACPI tables are only used during startup, but the local APIC
will be needed when we are running tests if we are saving power by halting
idle CPU cores and using a NMI to wake them up.
 2022-02-28 22:05:21 +00:00
Martin Whitaker
5211b67e6c Add option to map_region to indicate we only use the region during startup. 
This will avoid unnecessary remapping of the ACPI tables if they are
located in the third GB of memory.
 2022-02-28 22:05:21 +00:00
Martin Whitaker
a65d6a795d Rename map_device to map_region to better describe its use. 2022-02-28 22:05:21 +00:00
Martin Whitaker
604b22449a Allow device mapping to reuse existing mapped regions when they fully overlap. 2022-02-28 22:05:21 +00:00
Martin Whitaker
e4ad2dfa1b Don't use the top 0.5GB of the 32-bit address space for device mapping. 
This region is commonly used by the BIOS for mapping hardware devices,
so we can avoid a lot of remapping if we don't use it.
 2022-02-28 22:05:21 +00:00
Martin Whitaker
6b570cd779 Reduce the maximum mapped size of the linear frame buffer. 
This is needed for subsequent changes. If we do ever get presented with
a frame buffer larger than 8192x8192 pixels, we'll need to think again
about how to manage it.
 2022-02-28 22:05:21 +00:00
Martin Whitaker
f109a5814b Implement EHCI handover to companion controllers. 
Low/full speed USB devices attached directly to the root hub must be
rerouted to a companion controller. We can't rely on the BIOS to do
this for us. This requires us to initialise the EHCI device before
initialising any of its companions.

This also allows us to support keyboards attached via a high speed
hub on a system with EHCI plus companions.
 2022-02-20 20:21:16 +00:00
Martin Whitaker
f8b82eb0bd Exclude copyright notices from Doxygen file descriptions. 2022-02-19 19:56:55 +00:00
Martin Whitaker
3b183b0bef Add preliminary (untested) code for supporting UHCI. 2022-02-19 16:24:47 +00:00
Martin Whitaker
76adad2fe6 Add ability to generate internal API documentation using Doxygen. 2022-02-19 16:17:40 +00:00
Martin Whitaker
d1382b7a53 Increase timeout delay for starting APs. 2022-02-13 20:25:11 +00:00
Martin Whitaker
2bf1623733 Halt CPU cores that are not active in a test. 
This saves a lot of power when performing sequential tests.
 2022-02-12 19:30:14 +00:00
Martin Whitaker
de32bc5412 Ensure we only use 32-bit reads and writes when accessing APIC registers. 2022-02-12 09:39:18 +00:00
Martin Whitaker
7dd17c26c0 Check whether the BIOS has enabled x2APIC mode, and disable SMP if so. 2022-02-05 18:03:32 +00:00
Martin Whitaker
29b8bbece8 Rework AP startup based on how it's done in Linux. 2022-02-05 18:03:32 +00:00
Martin Whitaker
dcac527068 Don't make assumptions about usable memory. 
When using a legacy BIOS, the memory regions used by the BIOS are well
defined. This is not the case when using a UEFI BIOS. So include the
stack area in the BSS so the loader knows how much memory to allocate,
and check we have space to relocate the program to either low or high
memory.

There are still some assumptions in the USB driver code that need to
be fixed.
 2022-02-02 12:20:39 +00:00
Martin Whitaker
fd141c59c7 Use "CPU core" in preference to "CPU" in comments. 2022-02-01 15:42:44 +00:00
Martin Whitaker
da0d2a9fc3 The apic_id_to_cpu_num[] map needs to be unsigned to support > 256 cores. 2022-02-01 15:40:52 +00:00
Martin Whitaker
16d55b7dad Remove distinction between physical and virtual CPUs. 
This is no longer needed, now we can display as many CPUs as we can
physically handle.
 2022-01-31 22:59:14 +00:00
Martin Whitaker
17093a96f9 Optimise the AP startup code to reduce the startup delay. 2022-01-31 19:47:32 +00:00
Martin Whitaker
f348add314 Remap numeric keypad to cursor keys. 2022-01-30 15:18:25 +00:00
Martin Whitaker
4589c7dad4 Recognise cursor keys and map them to 'l', 'r', 'u', 'd'. 2022-01-30 15:12:42 +00:00
Martin Whitaker
151870cc0b Display enabled CPUs as a scrollable list in the config menu. 
This removes a constraint on the number of CPU cores we can support.
 2022-01-30 15:12:04 +00:00
Martin Whitaker
c5e9fa4e18 Increase maximum number of APs to 256. 2022-01-29 16:13:05 +00:00
Martin Whitaker
01365ab2e7 A few more code tweaks and comment typo fixes in the EHCI driver. 2022-01-28 19:55:31 +00:00
Martin Whitaker
8509e3320a Minor code tweaks - no functional change. 2022-01-23 17:55:57 +00:00
Martin Whitaker
563c8a1ee7 Add support for EHCI USB controller. 2022-01-23 17:38:50 +00:00
Martin Whitaker
5b56d76e03 Minor fixes and refactoring in preparation for EHCI support. 2022-01-23 17:34:08 +00:00
Martin Whitaker
0fded3e321 Store pmem temporary arrays on the stack to reduce memory footprint. 
Now we have more stack space available for the BSP during initialisation,
we no longer need to store the temporary data off stack.
 2022-01-09 21:27:44 +00:00
Martin Whitaker
4400ec6f17 Rename usbkbd to usbhcd to better reflect the new design. 2022-01-08 23:14:50 +00:00
Martin Whitaker
52a87c5d40 Add support for USB hubs. 
This refactors the USB driver code into a more object-oriented design,
with usbkbd.c being the base class and ohci.c and xhci.c being subclasses.
This makes the code that performs USB device enumeration independent of
the host controller.
 2022-01-08 23:00:28 +00:00
Martin Whitaker
84da9f7553 Refactor USB driver code to prepare for supporting USB hubs. 2021-12-29 18:17:46 +00:00
Martin Whitaker
a4c62cae97 XHCI: don't scan USB3 ports - keyboards will only be found on USB2 ports. 2021-12-28 16:14:29 +00:00
Martin Whitaker
9785d8f8b9 Map USB controller registers into the reserved area of virtual memory. 
This ensures they are accessible when the test is running, and if they
are physically mapped above 4GB.
 2021-12-23 17:45:26 +00:00
Martin Whitaker
d9fee4dcbb Flush caches between writing and verifying test data. 
Mostly we write and read large chunks of data which will make it likely
that the data is no longer in the cache when we come to verify it. But
this is not always true, and in any case, we shouldn't rely on it.
 2021-12-23 11:00:10 +00:00
Martin Whitaker
11c0c6c2f5 Use atomic memory read/write functions in tests. 
This ensures compiler optimisations won't interfere with the tests.
 2021-12-23 10:07:55 +00:00
Martin Whitaker
eb58a63ad4 XHCI: add device attach time delay after starting the controller. 2021-12-22 19:08:14 +00:00
Martin Whitaker
8069b8724b Initial support for native USB keyboard interface. 
This adds support for USB keyboards connected directly to an OHCI
or XHCI controller.
 2021-12-22 17:31:06 +00:00
Martin Whitaker
a7d17186f3 Improved PCI configuration space access functions. 2021-12-05 14:15:37 +00:00
Martin Whitaker
8f1d81b65d Add missing includes of stdbool.h. 
To ensure we aren't dependent on the order of inclusion.
 2021-12-05 13:50:25 +00:00
Martin Whitaker
ec676ccab2 Add debug trace for ACPI RSDP search results. 2020-12-11 16:18:45 +00:00
Martin Whitaker
bb667b600f Use ACPI RSDP address from boot_params if provided by bootloader. 2020-12-11 16:18:04 +00:00
Martin Whitaker
1d2bf57403 Improve and fix scanning for ACPI tables. 2020-12-11 13:27:05 +00:00
Martin Whitaker
27c5fe363f Add startup option to enable/disable SMP. 2020-12-10 13:51:39 +00:00
Martin Whitaker
725435d5c7 Add support for 24bpp frame buffer. 2020-07-09 15:51:04 +01:00
Martin Whitaker
366e7a1af4 Improve code readability. 2020-06-30 13:58:33 +01:00
Martin Whitaker
7d00dbe26a Remove duplicate EFI table definitions. 2020-06-30 13:57:15 +01:00
Martin Whitaker
9492c086fe Move boot_params definitions into separate header file. 2020-06-29 12:09:13 +01:00
Martin Whitaker
fbd3376668 Initial commit. 2020-05-24 21:30:55 +01:00