powerpc/32: drop CPU_FTR_UNIFIED_ID_CACHE

Only 601 and e200 have unified I/D cache.

Drop the feature and use CONFIG_PPC_BOOK3S_601 and CONFIG_E200.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b5902144266d2f4eed1ffea53915bd0245841e02.1566834712.git.christophe.leroy@c-s.fr

diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h
index fac1b81bbbd98918a3ca961d42b20877c1aab687..a1ebcbc3931f2afe7dd6667e353d809303b1bfb0 100644 (file)
--- a/arch/powerpc/include/asm/cputable.h
+++ b/arch/powerpc/include/asm/cputable.h
@@ -158,7 +158,6 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTR_NEED_COHERENT          ASM_CONST(0x01000000)
 #define CPU_FTR_NO_BTIC                        ASM_CONST(0x02000000)
 #define CPU_FTR_PPC_LE                 ASM_CONST(0x04000000)
-#define CPU_FTR_UNIFIED_ID_CACHE       ASM_CONST(0x08000000)
 #define CPU_FTR_SPE                    ASM_CONST(0x10000000)
 #define CPU_FTR_NEED_PAIRED_STWCX      ASM_CONST(0x20000000)
 #define CPU_FTR_INDEXED_DCR            ASM_CONST(0x40000000)
@@ -292,7 +291,7 @@ static inline void cpu_feature_keys_init(void) { }
 #endif
 
 #define CPU_FTRS_PPC601        (CPU_FTR_COMMON | \
-       CPU_FTR_COHERENT_ICACHE | CPU_FTR_UNIFIED_ID_CACHE)
+       CPU_FTR_COHERENT_ICACHE)
 #define CPU_FTRS_603   (CPU_FTR_COMMON | CPU_FTR_MAYBE_CAN_DOZE | \
            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE | CPU_FTR_NOEXECUTE)
 #define CPU_FTRS_604   (CPU_FTR_COMMON | CPU_FTR_PPC_LE)
@@ -383,7 +382,7 @@ static inline void cpu_feature_keys_init(void) { }
 #define CPU_FTRS_47X   (CPU_FTRS_440x6)
 #define CPU_FTRS_E200  (CPU_FTR_SPE_COMP | \
            CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
-           CPU_FTR_UNIFIED_ID_CACHE | CPU_FTR_NOEXECUTE | \
+           CPU_FTR_NOEXECUTE | \
            CPU_FTR_DEBUG_LVL_EXC)
 #define CPU_FTRS_E500  (CPU_FTR_MAYBE_CAN_DOZE | \
            CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN | \

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index b917641cdaa62cdef4f271265e3029fed9a26714..3d21fb11079788170a4de351969d150f40d221fd 100644 (file)
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -292,14 +292,14 @@ _GLOBAL(flush_instruction_cache)
        iccci   0,r3
 #endif
 #elif defined(CONFIG_FSL_BOOKE)
-BEGIN_FTR_SECTION
+#ifdef CONFIG_E200
        mfspr   r3,SPRN_L1CSR0
        ori     r3,r3,L1CSR0_CFI|L1CSR0_CLFC
        /* msync; isync recommended here */
        mtspr   SPRN_L1CSR0,r3
        isync
        blr
-END_FTR_SECTION_IFSET(CPU_FTR_UNIFIED_ID_CACHE)
+#endif
        mfspr   r3,SPRN_L1CSR1
        ori     r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR
        mtspr   SPRN_L1CSR1,r3

diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index 94517e4a2723593402cff11780d712be3319ec75..a7541edf0cdb6faa9ba7fd778893aba63393af61 100644 (file)
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -206,6 +206,6 @@ __init void initialize_cache_info(void)
        dcache_bsize = cur_cpu_spec->dcache_bsize;
        icache_bsize = cur_cpu_spec->icache_bsize;
        ucache_bsize = 0;
-       if (cpu_has_feature(CPU_FTR_UNIFIED_ID_CACHE))
+       if (IS_ENABLED(CONFIG_PPC_BOOK3S_601) || IS_ENABLED(CONFIG_E200))
                ucache_bsize = icache_bsize = dcache_bsize;
 }