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1822 6544 d 20 h jermar /trunk/ sparc64 work.
1. Formatting fixes.
2. When writing to DMMU ASI's, simple membar() can be used in place of flush().
3. Substantial changes in the way the TLB is taken over.
4. Remove unneeded functions.

This is the first revision that also runs on a real world Ultra 5 with UltraSPARC IIi
processor.

Note that 3. needs further work as the current implementation depends on the fact
that the compiler will use registers for local variables in take_over_tlb_and_tt().
Rewrite of that function into assembly is to follow.
 
1821 6546 d 15 h decky /trunk/kernel/arch/xen32/ xen32 cleanup  
1818 6551 d 10 h decky /trunk/kernel/ make burst updates  
1817 6552 d 6 h decky /trunk/kernel/arch/ xen32 work: create identity mapping for the main memory zone,
make several dummy modifications to get to the banner
 
1816 6552 d 15 h decky /trunk/kernel/ xen memory initialization  
1815 6552 d 17 h decky /trunk/kernel/arch/xen32/src/ fork drivers  
1814 6552 d 17 h decky /trunk/kernel/arch/xen32/include/ fork drivers  
1813 6552 d 17 h decky /trunk/kernel/arch/xen32/ xen32 hypervisor interface  
1812 6552 d 17 h decky /trunk/kernel/ move macro and cleanup  
1811 6552 d 19 h decky /trunk/kernel/arch/ unify bootstrapping  
1810 6559 d 8 h decky /trunk/kernel/arch/xen32/ remove obsolete stuff  
1809 6559 d 10 h decky /trunk/kernel/arch/xen32/ update xen32 support (most of the code is still dummy)  
1808 6559 d 10 h decky /trunk/kernel/arch/xen32/include/ fork directories  
1807 6559 d 12 h decky /trunk/kernel/arch/xen32/ fork directories  
1806 6559 d 12 h decky /trunk/kernel/arch/xen32/ fork directories  
1805 6559 d 19 h decky /trunk/kernel/arch/xen32/src/boot/ make Xen recognize the kernel image  
1804 6559 d 19 h decky /trunk/kernel/arch/xen32/ fork Xen32 makefile and linker script  
1802 6560 d 6 h decky /trunk/ cleanup and unify the build system  
1793 6562 d 19 h jermar /trunk/kernel/ Change hw_map() on sparc64 to use virtual addresses that are
beyond the end of physical memory. It is beneficial in two
ways: first, physical memory is no longer being wasted by
otherwise necessary calls to frame_alloc() and, second,
virtual addresses for devices are now correctly allocated
and do not overlap with the 4M TLB-locked mapping for
kernel text and data.
 
1792 6563 d 9 h jermar /trunk/ Move functionality of tlb_arch_init() to take_over_tlb_and_tt().
Call take_over_tlb_and_tt() very early after the kernel starts
executing.
 
1790 6563 d 14 h jermar /trunk/ Remove OpenFirmware calls from kernel/ entirely.

Switch the sparc64 port to use bootinfo.

Copy memcpy from boot/ to sparc64 kernel/ and
adjust it for memcpy_from/to_uspace.
 
1789 6563 d 16 h jermar /trunk/ Fix ofw_memmap() in boot infrastructure.
The cell size is 32-bit and not equal sizeof(ofw_arg_t).
Define architecture dependant #address-cells and #size-cells for cases
the respective properties are missing in the OpenFirmware device tree.
The algorithm now works both for ppc32 and sparc64.

Add memmap_t, screen_t and keyboard_t to sparc64 bootinfo structure.
Be more verbose during sparc64 boot.

Move ALIGN_UP to generic part of boot/.

Change header guards in several places so that they don't contain double underscore.
 
1787 6565 d 13 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1784 6566 d 10 h jermar /kernel/trunk/ Sync OpenFirmware functionality with boot.
Random cleanup.
 
1780 6572 d 14 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1777 6572 d 16 h jermar /kernel/trunk/ Make sparc64 kernel assume it is loaded by our loader.  
1776 6572 d 16 h jermar /kernel/trunk/arch/mips32/ Typos and indentation fixes for mips32 and some generic files as well.  
1774 6572 d 23 h decky /kernel/trunk/ initial support for Xen  
1770 6573 d 15 h jermar /kernel/trunk/arch/sparc64/src/mm/ Fix sparc64 to compile again.  
1769 6575 d 9 h jermar /kernel/trunk/arch/ Change cache_error exception to take istate * as a parameter.
Make cache_error() print epc in the panic message.
Do not rely on the compiler to generate 'nop' after 'beq' in atomic_add()
and put it there explicitly.
Indentation fixes and cosmetic changes.
 
1767 6580 d 21 h palkovsky /kernel/trunk/ Remove unneeded FRAME_PANIC.
Fix some things broken by last commit.
 
1766 6580 d 21 h palkovsky /kernel/trunk/ Changed frame_alloc call, cleaned a lot of stuff, fixed some not-perfectly-correct error handling.  
1762 6582 d 7 h decky /kernel/trunk/arch/ppc32/src/cpu/ ppc32 identify known CPUs  
1760 6583 d 15 h palkovsky /kernel/trunk/ Changed interface of frame_alloc/free to use address of frame instead of the pfn.
This makes it impossible to use >4GB of memory on 32-bit machines, but who cares...
 
1758 6586 d 14 h decky /kernel/trunk/arch/ppc32/src/mm/ remove ASIDs from Page Hash Table  
1756 6586 d 19 h decky /kernel/trunk/arch/ppc32/ don't use hardcoded PIC address  
1754 6586 d 20 h jermar /kernel/trunk/ Indentation and some improved comments.
Remove forgotten comment from gxemul.sh.
 
1749 6588 d 9 h decky /kernel/trunk/arch/mips32/src/ remove forgotten address translation  
1746 6588 d 10 h decky /kernel/trunk/ prepare GXEmul kernel to use the boot loader  
1745 6588 d 10 h jermar /kernel/trunk/arch/ppc64/src/mm/ Make defunct ppc64 kernel compile again.