MIPS: Fix undefined reference to physical_memsize
Since commitd41e6858ba
("MIPS: Kconfig: Set default MIPS system type as generic") switched the default platform to the "generic" platform, allmodconfig has been failing with the following linker error (among other errors): arch/mips/kernel/vpe-mt.o In function `vpe_run': (.text+0x59c): undefined reference to `physical_memsize' The Lantiq platform already worked around the same issue in commit9050d50e22
("MIPS: lantiq: Set physical_memsize") by declaring physical_memsize with the initial value of 0 (on the assumption that the actual memory size will be hard-coded in the loaded VPE firmware), and the Malta platform already provided physical_memsize. Since all other platforms will fail to link with the VPE loader enabled, only allow Lantiq and Malta platforms to enable it, by way of a SYS_SUPPORTS_VPE_LOADER which is selected by those two platforms and which MIPS_VPE_LOADER depends on. SYS_SUPPORTS_MULTITHREADING is now a dependency of SYS_SUPPORTS_VPE_LOADER so that Kconfig emits a warning if SYS_SUPPORTS_VPE_LOADER is selected without SYS_SUPPORTS_MULTITHREADING. Fixes:d41e6858ba
("MIPS: Kconfig: Set default MIPS system type as generic") Signed-off-by: James Hogan <jhogan@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: John Crispin <john@phrozen.org> Cc: Hauke Mehrtens <hauke@hauke-m.de> Cc: Paul Burton <paul.burton@mips.com> Cc: Matt Redfearn <matt.redfearn@imgtec.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: linux-mips@linux-mips.org Tested-by: Guenter Roeck <linux@roeck-us.net> Patchwork: https://patchwork.linux-mips.org/patch/18453/
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@ -390,6 +390,7 @@ config LANTIQ
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_MIPS16
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select SYS_SUPPORTS_MULTITHREADING
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select SYS_SUPPORTS_VPE_LOADER
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select SYS_HAS_EARLY_PRINTK
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select GPIOLIB
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select SWAP_IO_SPACE
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@ -517,6 +518,7 @@ config MIPS_MALTA
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select SYS_SUPPORTS_MIPS16
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select SYS_SUPPORTS_MULTITHREADING
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select SYS_SUPPORTS_SMARTMIPS
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select SYS_SUPPORTS_VPE_LOADER
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select SYS_SUPPORTS_ZBOOT
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select SYS_SUPPORTS_RELOCATABLE
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select USE_OF
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@ -2282,9 +2284,16 @@ config MIPSR2_TO_R6_EMULATOR
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The only reason this is a build-time option is to save ~14K from the
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final kernel image.
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config SYS_SUPPORTS_VPE_LOADER
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bool
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depends on SYS_SUPPORTS_MULTITHREADING
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help
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Indicates that the platform supports the VPE loader, and provides
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physical_memsize.
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config MIPS_VPE_LOADER
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bool "VPE loader support."
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depends on SYS_SUPPORTS_MULTITHREADING && MODULES
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depends on SYS_SUPPORTS_VPE_LOADER && MODULES
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select CPU_MIPSR2_IRQ_VI
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select CPU_MIPSR2_IRQ_EI
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select MIPS_MT
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