linux-stable.git/arch/openrisc/kernel/head.S, branch linux-4.9.y

openrisc: start CPU timer early in boot

2022-06-14T14:52:29+00:00

[ Upstream commit 516dd4aacd67a0f27da94f3fe63fe0f4dbab6e2b ]

In order to measure the boot process, the timer should be switched on as
early in boot as possible. As well, the commit defines the get_cycles
macro, like the previous patches in this series, so that generic code is
aware that it's implemented by the platform, as is done on other archs.

Cc: Thomas Gleixner 
Cc: Arnd Bergmann 
Cc: Jonas Bonn 
Cc: Stefan Kristiansson 
Acked-by: Stafford Horne 
Reported-by: Guenter Roeck 
Signed-off-by: Jason A. Donenfeld 
Signed-off-by: Sasha Levin

openrisc: Fix broken paths to arch/or32

2019-12-05T14:34:41+00:00

[ Upstream commit 57ce8ba0fd3a95bf29ed741df1c52bd591bf43ff ]

OpenRISC was mainlined as "openrisc", not "or32".
vmlinux.lds is generated from vmlinux.lds.S.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Stafford Horne 
Signed-off-by: Sasha Levin

openrisc: drop _PAGE_FILE and pte_file()-related helpers

2015-02-10T22:30:33+00:00

We've replaced remap_file_pages(2) implementation with emulation.  Nobody
creates non-linear mapping anymore.

Signed-off-by: Kirill A. Shutemov 
Cc: Jonas Bonn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

openrisc: add missing header inclusion

2013-02-26T06:44:08+00:00

Prevents build issue with updated toolchain

Reported-by: Jack Thomasson 
Tested-by: Christian Svensson 
Signed-off-by: Stefan Kristiansson 
Signed-off-by: Jonas Bonn

openrisc: fix up vmalloc page table loading

2013-02-14T15:39:26+00:00

vmalloc'ed pages are faulted into a process' page tables on demand.  In
order to facilitate this, do_page_fault needs to know whether it was
called via a page fault exception or a TLB-miss exception.

This patch adds a wrapper around the _x_page_fault_handler entry points
that the TLB-miss exceptions can call into in order to have the relevant
parameter set to satisfy do_page_fault.

This fixes a bug and is "good enough" for now.  That said, this whole
handling of vmalloc needs to be audited for correctness at some point.

Signed-off-by: Jonas Bonn

openrisc: avoid using function parameter regs in reset vector

2013-02-10T17:55:46+00:00

The kernel might be invoked through the reset vector, so to
preserve parameters passed to it, temp regs that are not
in the function parameter range needs to be used.

Signed-off-by: Stefan Kristiansson 
Signed-off-by: Jonas Bonn

openrisc: enable passing of flattened device tree pointer

2012-02-17T08:55:22+00:00

This patch enables passing a fdt pointer to the kernel.

This makes for the kernel parameter API:

void kernel(unsigned int fdt);

which, in accordance with the OpenRISC ABI results in:
r3 = pointer to fdt

Signed-off-by: Stefan Kristiansson 
Signed-off-by: Jonas Bonn

OpenRISC: Boot code

2011-07-22T16:46:27+00:00

Architecture code and early setup routines for booting Linux.

Signed-off-by: Jonas Bonn 
Reviewed-by: Arnd Bergmann