linux-toradex.git/arch/xtensa/platforms/iss/include/platform, branch v5.0

xtensa: drop unneeded platform/hardware.h headers

2018-08-20T19:28:04+00:00

platform/hardware.h no longer supply any information for processor.h,
vectors.h, setup.c or vmlinux.lds.S, don't include it.
This header is now empty in the platforms/iss, so remove it altogether.

Signed-off-by: Max Filippov

xtensa: rework {CONFIG,PLATFORM}_DEFAULT_MEM_START

2018-08-20T19:28:03+00:00

Drop PLATFORM_DEFAULT_MEM_START from the platform/hardware.h headers.
Provide definition of CONFIG_DEFAULT_MEM_START always, allow changing it
only in noMMU configurations when PLATFORM_WANT_DEFAULT_MEM is selected.
Change prompt and description so that it's clear that it controls
PAGE_OFFSET and PHYS_OFFSET.

Signed-off-by: Max Filippov

xtensa: drop unused {CONFIG,PLATFORM}_DEFAULT_MEM_SIZE

2018-08-20T19:27:52+00:00

Now that noMMU cache attributes are set up separately drop no longer
used macro PLATFORM_DEFAULT_MEM_SIZE and config symbol
CONFIG_DEFAULT_MEM_SIZE used for setting it.

Signed-off-by: Max Filippov

xtensa: ISS: add argc/argv simcall definitions

2017-03-13T20:47:12+00:00

There are three simcalls implemented by ISS and QEMU related to
argc/argv processing: SYS_iss_argc (get number of command line
arguments), SYS_iss_argv_size (get size of command line argument block)
and SYS_iss_set_argv (copy command line arguments to virtual guest
address).
Add definitions for these calls to iss/include/platform/simcall.h

Signed-off-by: Max Filippov

xtensa: ISS: define simc_exit and use it instead of inline asm

2016-09-21T01:53:00+00:00

A number of ISS platform functions use inline assembly to invoke
simulator exit, not all correctly. Define simc_exit(exit_code) and use
it instead of inline assembly.

Signed-off-by: Max Filippov

xtensa: don't use a7 in simcalls

2013-05-09T08:07:10+00:00

To support FRAME_POINTER avoid using a7 in __simc (none of the existing
simcalls needs it). Replace calls to __simc with more specific
simc_read, simc_write and simc_lseek calls.

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: properly fix missing compiler barrier in simcall

2012-12-19T05:10:21+00:00

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: ISS: add BASE_BAUD definition to serial.h

2012-12-19T05:10:21+00:00

This fixes the following build error in allyesconfig:

drivers/tty/serial/8250/8250_early.c: In function 'parse_options':
drivers/tty/serial/8250/8250_early.c:160:18: error: 'BASE_BAUD' undeclared (first use in this function)

Reported-by: Fengguang Wu 
Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: ISS: fix specific simcalls

2012-10-16T04:39:05+00:00

Simcalls that take memory buffer definitely need wmb or rmb to make sure
gcc doesn't optimize away code that fills the buffer.

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel

xtensa: ISS: add dummy serial.h for ISS platform

2012-10-03T22:12:03+00:00

Signed-off-by: Max Filippov 
Signed-off-by: Chris Zankel