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author | Thomas Huth <thuth@redhat.com> | 2016-10-11 08:56:52 +0200 |
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committer | Thomas Huth <thuth@redhat.com> | 2016-12-20 21:52:12 +0100 |
commit | fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch) | |
tree | 2b450d96b01455df8ed908bf8f26ddc388a03380 /target-lm32/README | |
parent | 82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff) | |
download | qemu-fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0.zip qemu-fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0.tar.gz qemu-fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0.tar.bz2 |
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.
Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [crisµblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-lm32/README')
-rw-r--r-- | target-lm32/README | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/target-lm32/README b/target-lm32/README deleted file mode 100644 index ba3508a..0000000 --- a/target-lm32/README +++ /dev/null @@ -1,45 +0,0 @@ -LatticeMico32 target --------------------- - -General -------- -All opcodes including the JUART CSRs are supported. - - -JTAG UART ---------- -JTAG UART is routed to a serial console device. For the current boards it -is the second one. Ie to enable it in the qemu virtual console window use -the following command line parameters: - -serial vc -serial vc -This will make serial0 (the lm32_uart) and serial1 (the JTAG UART) -available as virtual consoles. - - -Semihosting ------------ -Semihosting on this target is supported. Some system calls like read, write -and exit are executed on the host if semihosting is enabled. See -target/lm32-semi.c for all supported system calls. Emulation aware programs -can use this mechanism to shut down the virtual machine and print to the -host console. See the tcg tests for an example. - - -Special instructions --------------------- -The translation recognizes one special instruction to halt the cpu: - and r0, r0, r0 -On real hardware this instruction is a nop. It is not used by GCC and -should (hopefully) not be used within hand-crafted assembly. -Insert this instruction in your idle loop to reduce the cpu load on the -host. - - -Ignoring the MSB of the address bus ------------------------------------ -Some SoC ignores the MSB on the address bus. Thus creating a shadow memory -area. As a general rule, 0x00000000-0x7fffffff is cached, whereas -0x80000000-0xffffffff is not cached and used to access IO devices. This -behaviour can be enabled with: - cpu_lm32_set_phys_msb_ignore(env, 1); - |