Le 06/05/2024 à 14:51, Michael Ellerman a écrit :
> Replace 4xx usage with 44x, and replace 4xx_SOC with 44x.

You can go one step further because CONFIG_44x implies CONFIG_BOOKE, see 
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/d404d1257cd1d36aa6b25237f54eb2c2223ce447.1607519517.git.christophe.le...@csgroup.eu/

> 
> Signed-off-by: Michael Ellerman <m...@ellerman.id.au>
> ---
>   arch/powerpc/Kconfig                   | 5 +----
>   arch/powerpc/include/asm/cacheflush.h  | 2 +-
>   arch/powerpc/include/asm/ppc_asm.h     | 2 +-
>   arch/powerpc/kernel/entry_32.S         | 6 +++---
>   arch/powerpc/kernel/process.c          | 2 +-
>   arch/powerpc/mm/fault.c                | 4 ++--
>   arch/powerpc/mm/ptdump/Makefile        | 2 +-
>   arch/powerpc/platforms/4xx/Makefile    | 2 +-
>   arch/powerpc/platforms/Kconfig.cputype | 8 +-------
>   arch/powerpc/sysdev/Kconfig            | 4 ++--
>   10 files changed, 14 insertions(+), 23 deletions(-)
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 9a7d2b218516..2b6fa87464a5 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -488,7 +488,7 @@ source "kernel/Kconfig.hz"
>   
>   config MATH_EMULATION
>       bool "Math emulation"
> -     depends on 4xx || PPC_8xx || PPC_MPC832x || BOOKE || PPC_MICROWATT
> +     depends on 44x || PPC_8xx || PPC_MPC832x || BOOKE || PPC_MICROWATT
>       select PPC_FPU_REGS
>       help
>         Some PowerPC chips designed for embedded applications do not have
> @@ -1102,9 +1102,6 @@ config PPC4xx_CPM
>         It also enables support for two different idle states (idle-wait
>         and idle-doze).
>   
> -config 4xx_SOC
> -     bool
> -
>   config FSL_LBC
>       bool "Freescale Local Bus support"
>       help
> diff --git a/arch/powerpc/include/asm/cacheflush.h 
> b/arch/powerpc/include/asm/cacheflush.h
> index ef7d2de33b89..f2656774aaa9 100644
> --- a/arch/powerpc/include/asm/cacheflush.h
> +++ b/arch/powerpc/include/asm/cacheflush.h
> @@ -121,7 +121,7 @@ static inline void invalidate_dcache_range(unsigned long 
> start,
>       mb();   /* sync */
>   }
>   
> -#ifdef CONFIG_4xx
> +#ifdef CONFIG_44x
>   static inline void flush_instruction_cache(void)
>   {
>       iccci((void *)KERNELBASE);
> diff --git a/arch/powerpc/include/asm/ppc_asm.h 
> b/arch/powerpc/include/asm/ppc_asm.h
> index 1d1018c1e482..02897f4b0dbf 100644
> --- a/arch/powerpc/include/asm/ppc_asm.h
> +++ b/arch/powerpc/include/asm/ppc_asm.h
> @@ -482,7 +482,7 @@ END_FTR_SECTION_NESTED(CPU_FTR_CELL_TB_BUG, 
> CPU_FTR_CELL_TB_BUG, 96)
>    * and they must be used.
>    */
>   
> -#if !defined(CONFIG_4xx) && !defined(CONFIG_PPC_8xx)
> +#if !defined(CONFIG_44x) && !defined(CONFIG_PPC_8xx)
>   #define tlbia                                       \
>       li      r4,1024;                        \
>       mtctr   r4;                             \
> diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
> index 1522164b10e4..98ad926c056f 100644
> --- a/arch/powerpc/kernel/entry_32.S
> +++ b/arch/powerpc/kernel/entry_32.S
> @@ -211,7 +211,7 @@ start_kernel_thread:
>   
>       .globl  fast_exception_return
>   fast_exception_return:
> -#if !(defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
> +#if !(defined(CONFIG_44x) || defined(CONFIG_BOOKE))
>       andi.   r10,r9,MSR_RI           /* check for recoverable interrupt */
>       beq     3f                      /* if not, we've got problems */
>   #endif
> @@ -365,7 +365,7 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS)
>       rfi
>   _ASM_NOKPROBE_SYMBOL(interrupt_return)
>   
> -#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
> +#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)
>   
>   /*
>    * Returning from a critical interrupt in user mode doesn't need
> @@ -469,4 +469,4 @@ ret_from_mcheck_exc:
>       RET_FROM_EXC_LEVEL(SPRN_MCSRR0, SPRN_MCSRR1, PPC_RFMCI)
>   _ASM_NOKPROBE_SYMBOL(ret_from_mcheck_exc)
>   #endif /* CONFIG_BOOKE */
> -#endif /* !(CONFIG_4xx || CONFIG_BOOKE) */
> +#endif /* !(CONFIG_44x || CONFIG_BOOKE) */
> diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
> index 196cfa41ad6e..cddb4c099bbd 100644
> --- a/arch/powerpc/kernel/process.c
> +++ b/arch/powerpc/kernel/process.c
> @@ -1566,7 +1566,7 @@ static void __show_regs(struct pt_regs *regs)
>       if (trap == INTERRUPT_MACHINE_CHECK ||
>           trap == INTERRUPT_DATA_STORAGE ||
>           trap == INTERRUPT_ALIGNMENT) {
> -             if (IS_ENABLED(CONFIG_4xx) || IS_ENABLED(CONFIG_BOOKE))
> +             if (IS_ENABLED(CONFIG_44x) || IS_ENABLED(CONFIG_BOOKE))
>                       pr_cont("DEAR: "REG" ESR: "REG" ", regs->dear, 
> regs->esr);
>               else
>                       pr_cont("DAR: "REG" DSISR: %08lx ", regs->dar, 
> regs->dsisr);
> diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
> index 53335ae21a40..9af44ddf4b53 100644
> --- a/arch/powerpc/mm/fault.c
> +++ b/arch/powerpc/mm/fault.c
> @@ -361,13 +361,13 @@ static void sanity_check_fault(bool is_write, bool 
> is_user,
>    * Define the correct "is_write" bit in error_code based
>    * on the processor family
>    */
> -#if (defined(CONFIG_4xx) || defined(CONFIG_BOOKE))
> +#if (defined(CONFIG_44x) || defined(CONFIG_BOOKE))
>   #define page_fault_is_write(__err)  ((__err) & ESR_DST)
>   #else
>   #define page_fault_is_write(__err)  ((__err) & DSISR_ISSTORE)
>   #endif
>   
> -#if defined(CONFIG_4xx) || defined(CONFIG_BOOKE)
> +#if defined(CONFIG_44x) || defined(CONFIG_BOOKE)
>   #define page_fault_is_bad(__err)    (0)
>   #elif defined(CONFIG_PPC_8xx)
>   #define page_fault_is_bad(__err)    ((__err) & DSISR_NOEXEC_OR_G)
> diff --git a/arch/powerpc/mm/ptdump/Makefile b/arch/powerpc/mm/ptdump/Makefile
> index dc896d2874f3..0f7a050f327e 100644
> --- a/arch/powerpc/mm/ptdump/Makefile
> +++ b/arch/powerpc/mm/ptdump/Makefile
> @@ -2,7 +2,7 @@
>   
>   obj-y       += ptdump.o
>   
> -obj-$(CONFIG_4xx)            += shared.o
> +obj-$(CONFIG_44x)            += shared.o
>   obj-$(CONFIG_PPC_8xx)               += 8xx.o
>   obj-$(CONFIG_PPC_E500)              += shared.o
>   obj-$(CONFIG_PPC_BOOK3S_32) += shared.o
> diff --git a/arch/powerpc/platforms/4xx/Makefile 
> b/arch/powerpc/platforms/4xx/Makefile
> index 2071a0abe09b..7f57c35f8dec 100644
> --- a/arch/powerpc/platforms/4xx/Makefile
> +++ b/arch/powerpc/platforms/4xx/Makefile
> @@ -1,6 +1,6 @@
>   # SPDX-License-Identifier: GPL-2.0-only
>   obj-y                               += uic.o machine_check.o
> -obj-$(CONFIG_4xx_SOC)                += soc.o
> +obj-$(CONFIG_44x)            += soc.o
>   obj-$(CONFIG_PCI)           += pci.o
>   obj-$(CONFIG_PPC4xx_HSTA_MSI)       += hsta_msi.o
>   obj-$(CONFIG_PPC4xx_CPM)    += cpm.o
> diff --git a/arch/powerpc/platforms/Kconfig.cputype 
> b/arch/powerpc/platforms/Kconfig.cputype
> index 55337628bf92..ce1ff72dc537 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -47,7 +47,6 @@ config 44x
>       bool "AMCC 44x, 46x or 47x"
>       select PPC_DCR_NATIVE
>       select PPC_UDBG_16550
> -     select 4xx_SOC
>       select HAVE_PCI
>       select PHYS_64BIT
>       select PPC_KUEP
> @@ -325,11 +324,6 @@ config FSL_EMB_PERF_EVENT_E500
>       depends on FSL_EMB_PERF_EVENT && PPC_E500
>       default y
>   
> -config 4xx
> -     bool
> -     depends on 44x
> -     default y
> -
>   config BOOKE
>       bool
>       depends on PPC_E500 || 44x
> @@ -564,7 +558,7 @@ config NR_CPUS
>   
>   config NOT_COHERENT_CACHE
>       bool
> -     depends on 4xx || PPC_8xx || PPC_MPC512x || \
> +     depends on 44x || PPC_8xx || PPC_MPC512x || \
>               GAMECUBE_COMMON || AMIGAONE
>       select ARCH_HAS_DMA_PREP_COHERENT
>       select ARCH_HAS_SYNC_DMA_FOR_DEVICE
> diff --git a/arch/powerpc/sysdev/Kconfig b/arch/powerpc/sysdev/Kconfig
> index 5aa92ff3622d..18ff2c4a814a 100644
> --- a/arch/powerpc/sysdev/Kconfig
> +++ b/arch/powerpc/sysdev/Kconfig
> @@ -5,12 +5,12 @@
>   
>   config PPC4xx_PCI_EXPRESS
>       bool
> -     depends on PCI && 4xx
> +     depends on PCI && 44x
>   
>   config PPC4xx_HSTA_MSI
>       bool
>       depends on PCI_MSI
> -     depends on PCI && 4xx
> +     depends on PCI && 44x
>   
>   config PPC_MSI_BITMAP
>       bool

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