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109 Commits 6 Branches 13 Tags
05905f8c3cb7a973a212e79ecb8119f136489991
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82 Commits

Author SHA1 Message Date
Justin C. Miller
05905f8c3c Move LAPIC LINT enable after log message for better debugging 2018-05-03 00:58:45 -07:00
Justin C. Miller
9542bd8a44 Add beginning of better vmem allocator 2018-05-03 00:57:58 -07:00
Justin C. Miller
d9fe457b44 Add beginning basic serial driver 2018-05-03 00:08:22 -07:00
Justin C. Miller
59700b07db Add initial IO APIC support 
- IO APIC vector mapping
- Legacy PIC disable
- Real interrupts happening
 2018-05-02 16:46:37 -07:00
Justin C. Miller
428e4563d0 Add initial classes representing APIC 2018-05-01 01:03:19 -07:00
Justin C. Miller
2d4e7cfdee Check CPUID info, switch cpu flag to Broadwell 2018-04-30 08:25:35 -07:00
Justin C. Miller
99222d8ab9 Log more info about ACPI APIC table data 2018-04-29 23:50:01 -07:00
Justin C. Miller
a845fee689 Remove test kalloc from main 2018-04-29 18:09:19 -07:00
Justin C. Miller
cfecf4f1d4 Add rdmsr/wrmsr to io.cpp 2018-04-29 13:24:02 -07:00
Justin C. Miller
b3e49590a7 Add logging framework 2018-04-28 19:18:53 -07:00
Justin C. Miller
358837ed69 Implement first-pass simple virtual memory manager 2018-04-28 02:17:17 -07:00
Justin C. Miller
14f51436d7 Load ELF file with bootloader instead of flat binary 2018-04-28 02:12:08 -07:00
Justin C. Miller
d9619e65a2 Fix indirection bug with marked offset pointer mapping 2018-04-26 17:27:55 -07:00
Justin C. Miller
9754994e0c Standardize types used in memory_pages 2018-04-26 16:47:51 -07:00
Justin C. Miller
34c894b15d Enable allocation and mapping of pages 2018-04-26 11:10:32 -07:00
Justin C. Miller
a2665d9247 Fix printf bug in page_block::dump 2018-04-26 11:09:34 -07:00
Justin C. Miller
25b9625635 paging finally works 2018-04-25 19:53:22 -07:00
Justin C. Miller
2404b22c1f support widths in printf 2018-04-25 19:52:27 -07:00
Justin C. Miller
bed882f41c Enable paging WIP 2018-04-25 10:48:14 -07:00
Justin C. Miller
fd9e0944cb Add rudimentary printf to console 2018-04-25 10:43:17 -07:00
Justin C. Miller
7e462319c9 Fix inconsistenly-named frame_buffer_size 2018-04-24 09:50:07 -07:00
Justin C. Miller
94de87ef86 Refactor screen ouput from main console code 2018-04-24 09:32:57 -07:00
Justin C. Miller
eb13f1f4fb Fix missing return 2018-04-24 08:54:38 -07:00
Justin C. Miller
ff1aac64c1 Use our own stack space, not efi's. 2018-04-23 10:22:43 -07:00
Justin C. Miller
ef24894211 Add stupid first serial output 2018-04-23 10:22:02 -07:00
Justin C. Miller
1113164505 Join page_block insert methods into one 2018-04-22 23:27:15 -07:00
Justin C. Miller
1de73de2e3 Move page table allocation to top 256GiB. 
I forgot to account for tracking page table physical addresses, so
this is a bit of an overhaul. Major changes:
- Refactor bootstrap code into more functions and:
  - Only allocate 32 pages of scratch space
  - Remap remaining space into top 256GiB, the "page table space"
- Use the page table space to directly offset-map page table pages
  from their physical addresses, to avoid tracking overhead.
- Refactor page_block list functions into static functions to better
  handle null/empty lists
 2018-04-22 21:52:59 -07:00
Justin C. Miller
8cb0803605 Make page_manager::unmap_pages() handle multiple blocks 2018-04-22 13:37:44 -07:00
Justin C. Miller
95d52b87f4 Initialize page_manager. 
Page manager now:
- Caches mapped pages and page_block structs
- Can unmap memory ranges
- Unmaps extra kernel memory during it's init
 2018-04-22 02:48:45 -07:00
Justin C. Miller
07fd3abe2c Move page size and higher half offset to constants 2018-04-21 20:58:58 -07:00
Justin C. Miller
5dedd2e0e0 Finish memory bootstrap sequence. 
Now we're setting up all our own page tables, and handing off to
page_manager's init function. (Which is still NYI.)
 2018-04-21 19:32:39 -07:00
Justin C. Miller
57abb03deb Rearrange memory manager into two classes. 
page_manager and memory_manager are now separate, and are also pre
allocated in the kernel so they don't have to allocate themselves.
 2018-04-21 17:34:33 -07:00
Justin C. Miller
4a38a74b16 Refactor memory code. 
Break out some more bootstrap code into functions. Add the start of
some Doxygen doc comments to help organize my thoughts.
 2018-04-21 16:49:39 -07:00
Justin C. Miller
da404f520d Rearrange memory bootstrapping code. 
Move EFI-related code and initial memory manager bootstrap code
to memory_bootstrap.cpp, move memory page structs to their own
memory_page.h/cpp files.
 2018-04-21 02:52:52 -07:00
Justin C. Miller
799ad8b264 Add operator| to enum_bitfields 2018-04-21 02:47:37 -07:00
Justin C. Miller
e8866abc7a Bootstrap in-kernel memory management 2018-04-20 02:15:56 -07:00
Justin C. Miller
3b560c063a Move kernel to higher half. 
Return to having the bootloader re-map the kernel into the higher
half before jumping into the kernel entrypoint, so we don't have
to juggle pointers inside the kernel.
 2018-04-19 01:37:34 -07:00
Justin C. Miller
a27b8d6a3a Add/move code into kutil library 2018-04-17 23:41:28 -07:00
Justin C. Miller
2050b89334 Move src/modules/main -> src/kernel 2018-04-17 09:45:05 -07:00
Justin C. Miller
504de44ff3 Make APIC addresses uint32_t* 
APIC registers need to be read/written 32 bits at a time, so
best to keep these as pointers to that size.
 2018-04-17 09:20:56 -07:00
Justin C. Miller
71a6f13fa5 Make interrupt_isrs.inc the one source of ISRs 2018-04-17 01:39:21 -07:00
Justin C. Miller
f62fbefe54 Parse APIC addresses out of ACPI tables. 2018-04-16 23:56:03 -07:00
Justin C. Miller
b7f18c0d31 Parse the ACPI XSDT and find ACPI tables. 2018-04-16 01:15:42 -07:00
Justin C. Miller
696c29086b Clean up isr references in main.cpp 2018-04-15 18:44:47 -07:00
Justin C. Miller
bce281606e Finish ISR code for CPU faults (ISRs 0-31) 2018-04-15 18:40:21 -07:00
Justin C. Miller
2388a92085 Add initial IDT and GDT setup. 
WIP interrupt handling. Interrupts do not yet return.
 2018-04-15 15:46:20 -07:00
Justin C. Miller
447991e82b Add comment to assert 2018-04-15 09:14:02 -07:00
Justin C. Miller
a8984350da Add new kassert macro. 2018-04-14 18:34:34 -07:00
Justin C. Miller
712df97dfc Add a better boot message with version 2018-04-12 09:17:59 -07:00
Justin C. Miller
1f396ced8e Make console support 256 color mode 2018-04-12 00:19:43 -07:00