linux-dev/arch/powerpc/boot/serial.c, branch linus/master

powerpc/boot: Use CONFIG_PPC_POWERNV to compile OPAL support

2021-10-13T05:45:12Z

CONFIG_PPC64_BOOT_WRAPPER is selected by CPU_LITTLE_ENDIAN which is used to compile support for other platforms such as Microwatt. There is no need for OPAL calls on these. Signed-off-by: Cédric Le Goater Reviewed-by: Joel Stanley Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20211011070356.99952-1-clg@kaod.org

powerpc/boot: Fix CONFIG_PPC_MPC52XX references

2020-07-29T11:08:22Z

Commit 866bfc75f40e ("powerpc: conditionally compile platform-specific serial drivers") made some code depend on CONFIG_PPC_MPC52XX, which doesn't exist. Fix it to use CONFIG_PPC_MPC52xx. Fixes: 866bfc75f40e ("powerpc: conditionally compile platform-specific serial drivers") Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200724131728.1643966-7-mpe@ellerman.id.au

powerpc: Remove Xilinx PPC405/PPC440 support

2020-05-28T13:24:34Z

The latest Xilinx design tools called ISE and EDK has been released in October 2013. New tool doesn't support any PPC405/PPC440 new designs. These platforms are no longer supported and tested. PowerPC 405/440 port is orphan from 2013 by commit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") and commit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership") that's why it is time to remove the support fot these platforms. Signed-off-by: Michal Simek Signed-off-by: Christophe Leroy Acked-by: Arnd Bergmann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu

powerpc/boot: pass CONFIG options in a simpler and more robust way

2019-07-10T03:20:44Z

Commit 5e9dcb6188a4 ("powerpc/boot: Expose Kconfig symbols to wrapper") was wrong, but commit e41b93a6be57 ("powerpc/boot: Fix build failures with -j 1") was also wrong. The correct dependency is: $(obj)/serial.o: $(obj)/autoconf.h However, I do not see the reason why we need to copy autoconf.h to arch/power/boot/. Nor do I see consistency in the way of passing CONFIG options. decompress.c references CONFIG_KERNEL_GZIP and CONFIG_KERNEL_XZ, which are passed via the command line. serial.c includes autoconf.h to reference a couple of CONFIG options, but this is fragile because we often forget to include "autoconf.h" from source files. In fact, it is already broken. ppc_asm.h references CONFIG_PPC_8xx, but utils.S is not given any way to access CONFIG options. So, CONFIG_PPC_8xx is never defined here. Pass $(LINUXINCLUDE) to make sure CONFIG options are accessible from all .c and .S files in arch/powerpc/boot/. I also removed the -traditional flag to make include/linux/kconfig.h work. This flag makes the preprocessor imitate the behavior of the pre-standard C compiler, but I do not understand why it is necessary. Signed-off-by: Masahiro Yamada Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190705100144.28785-2-yamada.masahiro@socionext.com

powerpc/zImage: Also check for stdout-path

2018-12-22T10:47:23Z

The /chosen/linux,stdout-path is "deprecated" in favour of /chosen/stdout-path so we should be checking for both. Signed-off-by: Oliver O'Halloran Signed-off-by: Michael Ellerman

powerpc/boot: Expose Kconfig symbols to wrapper

2018-10-13T11:21:25Z

Currently the wrapper is built without including anything in $(src)/include/, which means there are no CONFIG_ symbols defined. This means the platform specific serial drivers were never enabled. We now copy the definitions into the boot directory, so any C file can now include autoconf.h to depend on configuration options. Fixes: 866bfc75f40e ("powerpc: conditionally compile platform-specific serial drivers") Signed-off-by: Joel Stanley [mpe: Fix to use $(objtree) to find autoconf.h] Signed-off-by: Michael Ellerman

powerpc/boot: Remove support for Marvell MPSC serial controller

2018-06-03T14:39:22Z

There are no longer any platforms that use Marvell's MPSC serial controller so remove its driver. Signed-off-by: Mark Greer Signed-off-by: Michael Ellerman

powerpc/boot: Only build CPM code when necessary

2017-12-11T02:03:31Z

As far as I can tell CONFIG_CPM is the right symbol to use to conditionally compile the cpm-serial.c code. Signed-off-by: Michael Ellerman

powerpc/boot: Only build OPAL code when necessary

2017-12-11T02:03:30Z

Only build the OPAL console code in when necessary. This looks like it should use CONFIG_PPC_POWERNV, but because the opal-call.S code is 64-bit only, we must only build it when we're building the boot wrapper 64-bit. Signed-off-by: Michael Ellerman

powerpc/boot: Only build uartlite if XILINX_VIRTEX=y

2017-12-11T02:03:30Z

The serial code in uartlite.c only matches if we find one of two Xilinx (xlnx) nodes in the device tree, there's no need to build or link the code on other platforms. As far as I can tell CONFIG_XILINX_VIRTEX is the appropriate symbol to use to conditionally compile the code. Signed-off-by: Michael Ellerman