#
278630 |
|
12-Feb-2015 |
ian |
MFC r276206:
For data and instruction prefetch aborts, call the same handler in the C code, passing a 0/1 flag that indicates which type of abort it was. This sets the stage for unifying the handling of page faults in a single routine.
|
#
266207 |
|
16-May-2014 |
ian |
MFC r262534, r262548, r262549, r262552, r262568, r262581, r262583, r262584, r262585, r262587, r262696, r262712
Replace many pasted identical definitions of cpu_initclocks() with a common implementation in arm/machdep.c.
aicasm: Don't complain about missing prototypes to ease bootstrap issues.
Vybrid: Add driver for Inter-Integrated Circuit (I2C).
imx6: Initialize the Low Power Mode bits to keep the ARM cores running during WFI.
All our current ARM multi-core systems have all cores in one package with a shared L2 cache, reflect that in the common cpu_topo() routine.
mpcore timer: Supply a DELAY() implementation via weak linkage, so that SoC-specific code can supply a better implementation.
imx6: Add some rudimentary voltage control.
Add an armv7 implementation of cpu_sleep().
Add __used attribute so that the DELAY implementation doesn't get optimized away as unreferenced, causing linker errors when trying to resolve the weak reference to the missing function.
|
#
266194 |
|
15-May-2014 |
ian |
MFC r261643, r261646, r261648, r261649, r261651, r261656, r261657, r261663, r261676, r261677, r261698, r261778
Consolidate code related to setting up physical memory configuration into a new physmem.c file.
Replace compile-time constant KERNPHYSADDR with abp_physaddr
Calculate the kernel's load address from the PC in the elf / gzip trampoline instead of relying on KERNPHYSADDR as a compile-time constant.
It turns out a global variable is the only straightforward way to communicate the kernel's physical load address from where it's known in initarm() into cpu_mp_start() which is called from non-arm code and takes no parameters.
Remove the now unused MMU_INIT macro.
Use vm_paddr_t, not vm_offset_t, when dealing with physical addresses.
No need to set physmem in each initarm() instance anymore, it's handled in common code now.
Pass the pagetable used from locore.S to initarm to allow it to map data in as required.
Fix the physmem exclude-region clipping logic for the edge-trim case.
Add some extra debugging output when DEBUG is defined.
Update legacy platforms to use new arm_physmem helper routines.
|
#
266160 |
|
15-May-2014 |
ian |
MFC r261423, r261424, r261516, r261513, r261562, r261563, r261564, r261565, r261596, r261606
Add the imx sdhci controller.
Move Open Firmware device root on PowerPC, ARM, and MIPS systems to a sub-node of nexus (ofwbus) rather than direct attach under nexus. This fixes FDT on x86 and will make coexistence with ACPI on ARM systems easier. SPARC is unchanged.
Add the missing ')' at end of sentence. Reword it to use a more common idiom.
Pass the kernel physical address to initarm through the boot param struct.
Make functions only used in vfp.c static, and remove vfp_enable.
Fix __syscall on armeb EABI. As it returns a 64-bit value it needs to place 32-bit data in r1, not r0. 64-bit data is already packed correctly.
Use abp_physaddr for the physical address over KERNPHYSADDR. This helps us remove the need to load the kernel at a fixed address.
Remove references to PHYSADDR where it's used only in debugging output.
Dynamically generate the page table. This will allow us to detect the physical address we are loaded at to change the mapping.
|
#
259365 |
|
13-Dec-2013 |
ian |
MFC r257669, r257672, r257673, r257676, r257678:
Call initarm_lastaddr() later in the init sequence, after establishing static device mappings, rather than as the first of the initializations that a platform can hook into. This allows a platform to allocate KVA from the top of the address space downwards for things like static device mapping, and return the final "last usable address" result after that and other early init work is done.
Because some platforms were doing work in initarm_lastaddr() that needs to be done early, add a new initarm_early_init() routine and move the early init code to that routine on those platforms.
Make PTE_DEVICE a synonym for PTE_NOCACHE on armv4, to make it easier to share the same code on both architectures.
Add new helper routines for arm static device mapping. The new code allocates kva space from the top down for the device mappings and builds entries in an internal table which is automatically used later by arm_devmap_bootstrap(). The platform code just calls the new arm_devmap_add_entry() function as many times as it needs to (up to 32 entries allowed; most platforms use 2 or 3 at most).
Remove imx local devmap code and use the essentially identical common code that got moved from imx_machdep.c to arm/devmap.c.
|
#
259364 |
|
13-Dec-2013 |
ian |
MFC r257648, r257649, r257660:
Begin reducing code duplication in arm pmap.c and pmap-v6.c by factoring out common code related to mapping device memory into a new devmap.c file.
Remove the growing duplication of code that used pmap_devmap_find_pa() and then did some math with the returned results to generate a virtual address, and likewise in reverse to get a physical address. Now there are a pair of functions, arm_devmap_vtop() and arm_devmap_ptov(), to do that. The bus_space_map() implementations are rewritten in terms of these.
Move remaining code and data related to static device mapping into the new devmap.[ch] files. Emphasize the MD nature of these things by using the prefix arm_devmap_ on the function and type names (already a few of these things found their way into MI code, hopefully it will be harder to do by accident in the future).
|
#
278630 |
|
12-Feb-2015 |
ian |
MFC r276206:
For data and instruction prefetch aborts, call the same handler in the C code, passing a 0/1 flag that indicates which type of abort it was. This sets the stage for unifying the handling of page faults in a single routine.
|
#
266207 |
|
16-May-2014 |
ian |
MFC r262534, r262548, r262549, r262552, r262568, r262581, r262583, r262584, r262585, r262587, r262696, r262712
Replace many pasted identical definitions of cpu_initclocks() with a common implementation in arm/machdep.c.
aicasm: Don't complain about missing prototypes to ease bootstrap issues.
Vybrid: Add driver for Inter-Integrated Circuit (I2C).
imx6: Initialize the Low Power Mode bits to keep the ARM cores running during WFI.
All our current ARM multi-core systems have all cores in one package with a shared L2 cache, reflect that in the common cpu_topo() routine.
mpcore timer: Supply a DELAY() implementation via weak linkage, so that SoC-specific code can supply a better implementation.
imx6: Add some rudimentary voltage control.
Add an armv7 implementation of cpu_sleep().
Add __used attribute so that the DELAY implementation doesn't get optimized away as unreferenced, causing linker errors when trying to resolve the weak reference to the missing function.
|
#
266194 |
|
15-May-2014 |
ian |
MFC r261643, r261646, r261648, r261649, r261651, r261656, r261657, r261663, r261676, r261677, r261698, r261778
Consolidate code related to setting up physical memory configuration into a new physmem.c file.
Replace compile-time constant KERNPHYSADDR with abp_physaddr
Calculate the kernel's load address from the PC in the elf / gzip trampoline instead of relying on KERNPHYSADDR as a compile-time constant.
It turns out a global variable is the only straightforward way to communicate the kernel's physical load address from where it's known in initarm() into cpu_mp_start() which is called from non-arm code and takes no parameters.
Remove the now unused MMU_INIT macro.
Use vm_paddr_t, not vm_offset_t, when dealing with physical addresses.
No need to set physmem in each initarm() instance anymore, it's handled in common code now.
Pass the pagetable used from locore.S to initarm to allow it to map data in as required.
Fix the physmem exclude-region clipping logic for the edge-trim case.
Add some extra debugging output when DEBUG is defined.
Update legacy platforms to use new arm_physmem helper routines.
|
#
266160 |
|
15-May-2014 |
ian |
MFC r261423, r261424, r261516, r261513, r261562, r261563, r261564, r261565, r261596, r261606
Add the imx sdhci controller.
Move Open Firmware device root on PowerPC, ARM, and MIPS systems to a sub-node of nexus (ofwbus) rather than direct attach under nexus. This fixes FDT on x86 and will make coexistence with ACPI on ARM systems easier. SPARC is unchanged.
Add the missing ')' at end of sentence. Reword it to use a more common idiom.
Pass the kernel physical address to initarm through the boot param struct.
Make functions only used in vfp.c static, and remove vfp_enable.
Fix __syscall on armeb EABI. As it returns a 64-bit value it needs to place 32-bit data in r1, not r0. 64-bit data is already packed correctly.
Use abp_physaddr for the physical address over KERNPHYSADDR. This helps us remove the need to load the kernel at a fixed address.
Remove references to PHYSADDR where it's used only in debugging output.
Dynamically generate the page table. This will allow us to detect the physical address we are loaded at to change the mapping.
|
#
259365 |
|
13-Dec-2013 |
ian |
MFC r257669, r257672, r257673, r257676, r257678:
Call initarm_lastaddr() later in the init sequence, after establishing static device mappings, rather than as the first of the initializations that a platform can hook into. This allows a platform to allocate KVA from the top of the address space downwards for things like static device mapping, and return the final "last usable address" result after that and other early init work is done.
Because some platforms were doing work in initarm_lastaddr() that needs to be done early, add a new initarm_early_init() routine and move the early init code to that routine on those platforms.
Make PTE_DEVICE a synonym for PTE_NOCACHE on armv4, to make it easier to share the same code on both architectures.
Add new helper routines for arm static device mapping. The new code allocates kva space from the top down for the device mappings and builds entries in an internal table which is automatically used later by arm_devmap_bootstrap(). The platform code just calls the new arm_devmap_add_entry() function as many times as it needs to (up to 32 entries allowed; most platforms use 2 or 3 at most).
Remove imx local devmap code and use the essentially identical common code that got moved from imx_machdep.c to arm/devmap.c.
|
#
259364 |
|
13-Dec-2013 |
ian |
MFC r257648, r257649, r257660:
Begin reducing code duplication in arm pmap.c and pmap-v6.c by factoring out common code related to mapping device memory into a new devmap.c file.
Remove the growing duplication of code that used pmap_devmap_find_pa() and then did some math with the returned results to generate a virtual address, and likewise in reverse to get a physical address. Now there are a pair of functions, arm_devmap_vtop() and arm_devmap_ptov(), to do that. The bus_space_map() implementations are rewritten in terms of these.
Move remaining code and data related to static device mapping into the new devmap.[ch] files. Emphasize the MD nature of these things by using the prefix arm_devmap_ on the function and type names (already a few of these things found their way into MI code, hopefully it will be harder to do by accident in the future).
|