kernel/linux.git/arch/mips/generic, branch v5.10.257

MIPS: generic/yamon-dt: fix uninitialized variable error

2021-11-26T09:39:15+00:00

[ Upstream commit 255e51da15baed47531beefd02f222e4dc01f1c1 ] In the case where fw_getenv returns an error when fetching values for ememsizea and memsize then variable phys_memsize is not assigned a variable and will be uninitialized on a zero check of phys_memsize. Fix this by initializing phys_memsize to zero. Cleans up cppcheck error: arch/mips/generic/yamon-dt.c:100:7: error: Uninitialized variable: phys_memsize [uninitvar] Fixes: f41d2430bbd6 ("MIPS: generic/yamon-dt: Support > 256MB of RAM") Signed-off-by: Colin Ian King Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

MIPS: generic: Update node names to avoid unit addresses

2021-06-30T12:47:16+00:00

commit e607ff630c6053ecc67502677c0e50053d7892d4 upstream. With the latest mkimage from U-Boot 2021.04, the generic defconfigs no longer build, failing with: /usr/bin/mkimage: verify_header failed for FIT Image support with exit code 1 This is expected after the linked U-Boot commits because '@' is forbidden in the node names due to the way that libfdt treats nodes with the same prefix but different unit addresses. Switch the '@' in the node name to '-'. Drop the unit addresses from the hash and kernel child nodes because there is only one node so they do not need to have a number to differentiate them. Cc: stable@vger.kernel.org Link: https://source.denx.de/u-boot/u-boot/-/commit/79af75f7776fc20b0d7eb6afe1e27c00fdb4b9b4 Link: https://source.denx.de/u-boot/u-boot/-/commit/3f04db891a353f4b127ed57279279f851c6b4917 Suggested-by: Simon Glass Signed-off-by: Nathan Chancellor Reviewed-by: Tom Rini Signed-off-by: Thomas Bogendoerfer [nathan: Backport to 5.10, only apply to .its.S files that exist] Signed-off-by: Nathan Chancellor Signed-off-by: Greg Kroah-Hartman

MIPS: Ingenic: Add system type for new Ingenic SoCs.

2020-09-27T08:57:27+00:00

Add JZ4775, X1000E, X2000, and X2000E system type for cat /proc/cpuinfo to give out JZ4775, X1000E, X2000 and X2000E. Signed-off-by: 周琰杰 (Zhou Yanjie) Reviewed-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: jz4740: Rename jz4740 folders to ingenic

2020-09-18T14:35:05+00:00

Now that all the jz4740 platform code has been removed, and we're left with only a Kconfig and the cpu-feature-overrides.h file, finalize the cleanup process by renaming the jz4740 and include/mach-jz4740 folders to ingenic and include/mach-ingenic. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: generic: Add support for Ingenic SoCs

2020-09-18T14:33:59+00:00

Add support for Ingenic SoCs in arch/mips/generic/. The Kconfig changes are here to ensure that it is possible to compile either a generic kernel that supports Ingenic SoCs, or a Ingenic-only kernel, both using the same code base, to avoid duplicated code. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: generic: Add support for zboot

2020-09-18T14:33:06+00:00

There is no reason we can't create compressed kernels here, so select the option SYS_SUPPORTS_ZBOOT. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: generic: Support booting with built-in or appended DTB

2020-09-18T14:32:19+00:00

The plat_get_fdt() checked that the kernel was booted using UHI before reading the 'fw_passed_dtb' variable. However, this variable is also set when the DT has been appended, or when it has been built into the kernel. Support these usecases by removing the UHI check. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: generic: Init command line with fw_init_cmdline()

2020-09-18T14:31:10+00:00

The function bootcmdline_init() in arch/mips/kernel/setup.c will populate the boot_command_line string using the parameters hardcoded in the kernel, and those provided in the devicetree file. Then, it would append the content of the arcs_cmdline variable, which is filled by the board's plat_mem_setup() function. The plat_mem_setup() function for the generic MIPS board would just copy the current boot_command_line to arcs_cmdline, which is nonsense for two reasons: - the result will be appended to the boot_command_line anyway, so all it does is duplicate every single parameter on the command line; - the code did not perform at all what it's supposed to, which is to retrieve the parameters passed by the bootloader. Fix this by calling fw_init_cmdline() in plat_mem_setup(), which will properly initialize arcs_cmdline to the parameters passed by the bootloader. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: generic: Allow boards to set system type

2020-09-18T14:28:56+00:00

Check for the system_type variable in the get_system_type() function. If non-NULL, return it as the system type. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer

MIPS: Kconfig: add MIPS_GENERIC_KERNEL symbol

2020-09-18T14:28:31+00:00

The MIPS_GENERIC symbol now won't select any other configuration option. The MIPS_GENERIC_KERNEL will select all the options that the previous MIPS_GENERIC option did select, and will select MIPS_GENERIC as well. The whole point of this, is that it now becomes possible to compile a kernel for a SoC supported by the arch/mips/generic/ code, without making that kernel generic itself. Signed-off-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer