linux-toradex.git/arch/powerpc/kernel/head_64.S, branch v4.8 Linux kernel for Apalis and Colibri modules powerpc/64: Move the content of setup_system() to setup_arch() 2016-07-21T09:14:29+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2016-07-05T05:04:09+00:00 fa745a129cae93ca5d871ebac2a8f6c27ae3fbf2 And kill setup_system(). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
And kill setup_system().

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc: Define and use PPC64_ELF_ABI_v2/v1 2016-06-14T03:58:27+00:00 Michael Ellerman mpe@ellerman.id.au 2016-06-06T16:56:10+00:00 f55d966536034d33476fdd43c45d47225344469f We're approaching 20 locations where we need to check for ELF ABI v2. That's fine, except the logic is a bit awkward, because we have to check that _CALL_ELF is defined and then what its value is. So check it once in asm/types.h and define PPC64_ELF_ABI_v2 when ELF ABI v2 is detected. We also have a few places where what we're really trying to check is that we are using the 64-bit v1 ABI, ie. function descriptors. So also add a #define for that, which simplifies several checks. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
We're approaching 20 locations where we need to check for ELF ABI v2.
That's fine, except the logic is a bit awkward, because we have to check
that _CALL_ELF is defined and then what its value is.

So check it once in asm/types.h and define PPC64_ELF_ABI_v2 when ELF ABI
v2 is detected.

We also have a few places where what we're really trying to check is
that we are using the 64-bit v1 ABI, ie. function descriptors. So also
add a #define for that, which simplifies several checks.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/mm/radix: Make sure swapper pgdir is properly aligned 2016-05-11T11:53:55+00:00 Aneesh Kumar K.V aneesh.kumar@linux.vnet.ibm.com 2016-04-29T13:26:26+00:00 43a5c684270ee9b5b13c91ec048831dd5b7e0cdc With 4K page size radix config our level 1 page table size is 64K and it should be naturally aligned. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
With 4K page size radix config our level 1 page table size is 64K and it
should be naturally aligned.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/book3e-64: Use hardcoded mttmr opcode 2016-03-16T04:22:16+00:00 Scott Wood oss@buserror.net 2016-03-15T06:47:38+00:00 7a25d91214cb22e642b9ed6e4434bfaf74adad28 This preserves the ability to build using older binutils (reportedly <= 2.22). Fixes: 6becef7ea04a ("powerpc/mpc85xx: Add CPU hotplug support for E6500") Signed-off-by: Scott Wood <oss@buserror.net> Cc: chenhui.zhao@freescale.com Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> 
This preserves the ability to build using older binutils (reportedly <=
2.22).

Fixes: 6becef7ea04a ("powerpc/mpc85xx: Add CPU hotplug support for E6500")
Signed-off-by: Scott Wood <oss@buserror.net>
Cc: chenhui.zhao@freescale.com
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/mpc85xx: Add CPU hotplug support for E6500 2016-03-05T05:58:38+00:00 chenhui zhao chenhui.zhao@freescale.com 2015-11-20T09:14:02+00:00 6becef7ea04a695f64299238fe13d41e41607469 Support Freescale E6500 core-based platforms, like t4240. Support disabling/enabling individual CPU thread dynamically. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> 
Support Freescale E6500 core-based platforms, like t4240.
Support disabling/enabling individual CPU thread dynamically.

Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
powerpc/rcpm: add RCPM driver 2016-03-05T05:50:27+00:00 chenhui zhao chenhui.zhao@freescale.com 2015-11-20T09:13:59+00:00 d17799f9c10e283cccd4d598d3416e6fac336ab9 There is a RCPM (Run Control/Power Management) in Freescale QorIQ series processors. The device performs tasks associated with device run control and power management. The driver implements some features: mask/unmask irq, enter/exit low power states, freeze time base, etc. Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com> Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> [scottwood: remove __KERNEL__ ifdef] Signed-off-by: Scott Wood <oss@buserror.net> 
There is a RCPM (Run Control/Power Management) in Freescale QorIQ
series processors. The device performs tasks associated with device
run control and power management.

The driver implements some features: mask/unmask irq, enter/exit low
power states, freeze time base, etc.

Signed-off-by: Chenhui Zhao <chenhui.zhao@freescale.com>
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
[scottwood: remove __KERNEL__ ifdef]
Signed-off-by: Scott Wood <oss@buserror.net>
powerpc/book3e: support CONFIG_RELOCATABLE 2015-10-27T23:13:27+00:00 Tiejun Chen tiejun.chen@windriver.com 2015-10-07T03:48:15+00:00 1cb6e064924857e600d13b4f6be5511145ecb560 book3e is different with book3s since 3s includes the exception vectors code in head_64.S as it relies on absolute addressing which is only possible within this compilation unit. So we have to get that label address with got. And when boot a relocated kernel, we should reset ipvr properly again after .relocate. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> [scottwood: cleanup and ifdef removal] Signed-off-by: Scott Wood <scottwood@freescale.com> 
book3e is different with book3s since 3s includes the exception
vectors code in head_64.S as it relies on absolute addressing
which is only possible within this compilation unit. So we have
to get that label address with got.

And when boot a relocated kernel, we should reset ipvr properly again
after .relocate.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: cleanup and ifdef removal]
Signed-off-by: Scott Wood <scottwood@freescale.com>
powerpc/booke64: Fix args to copy_and_flush 2015-10-27T23:13:26+00:00 Tiejun Chen tiejun.chen@windriver.com 2015-10-07T03:48:14+00:00 835c031c98ee1d166c7fdcdbd8c9cc20e05286d4 Convert r4/r5, not r6, to a virtual address when calling copy_and_flush. Otherwise, r3 is already virtual, and copy_to_flush tries to access r3+r6, PAGE_OFFSET gets added twice. This isn't normally seen because on book3e we normally enter with the kernel at zero and thus skip copy_to_flush -- but it will be needed for kexec support. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> [scottwood: split patch and rewrote changelog] Signed-off-by: Scott Wood <scottwood@freescale.com> 
Convert r4/r5, not r6, to a virtual address when calling
copy_and_flush.  Otherwise, r3 is already virtual, and copy_to_flush
tries to access r3+r6, PAGE_OFFSET gets added twice.

This isn't normally seen because on book3e we normally enter with
the kernel at zero and thus skip copy_to_flush -- but it will be
needed for kexec support.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
[scottwood: split patch and rewrote changelog]
Signed-off-by: Scott Wood <scottwood@freescale.com>
powerpc/e6500: kexec: Handle hardware threads 2015-10-27T23:13:25+00:00 Scott Wood scottwood@freescale.com 2015-10-07T03:48:12+00:00 f34b3e19fd060b87e97c89050f2b40b8ada468a9 The new kernel will be expecting secondary threads to be disabled, not spinning. Signed-off-by: Scott Wood <scottwood@freescale.com> 
The new kernel will be expecting secondary threads to be disabled,
not spinning.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Merge remote-tracking branch 'scott/next' into next 2014-08-05T04:13:41+00:00 Benjamin Herrenschmidt benh@kernel.crashing.org 2014-08-05T04:13:41+00:00 9287b95ec9ded0a4458094ebd967502263d80112 Scott writes: Highlights include e6500 hardware threading support, an e6500 TLB erratum workaround, corenet error reporting, support for a new board, and some minor fixes. 
Scott writes:

Highlights include e6500 hardware threading support, an e6500 TLB erratum
workaround, corenet error reporting, support for a new board, and some
minor fixes.