Commit Graph

7 Commits

Author SHA1 Message Date
Andrew Boie 86bc75e4ab qemu_nios2: increase RAM size
Reflects RAM increase that we get with SDK 0.8.2.

Change-Id: I5d7157834e29bb56864e81fedfb9766d5e4a24f8
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-07-29 20:47:11 +00:00
Andrew Boie 4eee43d4d4 nios2-qemu: correct system.h
The emulator supports all the integer math instructions and has
the necessary registers for exception debugging.

Change-Id: I55938d9e3a4b9d219f6fee06fe070e860ca71d4b
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-07-12 18:09:55 +00:00
Andrew Boie c613715322 nios2-qemu: use all available RAM
Use all available ram, cut in half for simulated RAM/ROM
regions. Some larger test cases did not fit in 64K for
non-XIP case.

Change-Id: I12296286ca7efa5bcc1ceef30486c3fe8976811c
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-06-30 20:56:16 +00:00
Andrew Boie 543aa77392 nios2-qemu: fix CONFIG_XIP
It's all RAM, but we pretend the range 0x410000 - 0x420000
is the "ROM" region, and stuff gets copied into RAM starting
at 0x400000.

Change-Id: Idf6bd603e2552593f588cf6130ee4da946bcf5a3
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-06-29 00:08:15 +00:00
Andrew Boie a7b54980bd nios2: set appropriate compiler flags for math support
Nios II CPUs vary in configuration on whether they support
'mul', 'mulx', and 'div' family of instructions. The compiler
can be told to use GCC integer library routines instead if
needed.

Ideally we would just pull the configuration out of system.h,
but pulling include file #defines into the Make environment
will involve some build system work that is best left to a
later improvement.

We've decided to take this build-time approach rather than
handle unimplemented instruction exceptions, so remove the
hook in exception.S

Change-Id: I05be0d5ed4c1a49b23dca1550ee66fd5891044d2
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-06-29 00:08:14 +00:00
Andrew Boie b8d7b0dfe7 nios2: properly set SYS_CLOCK_HW_CYCLES_PER_SEC
This is a workaround until we can modify the kernel to pull this
value out of system.h instead of Kconfig.

Change-Id: Iaafa9003d2bbcb5b38a050c371466a206f716ae7
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-06-22 16:42:21 +00:00
Andrew Boie 6524bae242 nios2-qemu: experimental QEMU target for Nios II
Change-Id: I4c2413000166b4a8c221fab81f3d8da98a88806b
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
2016-06-22 01:31:09 +00:00