diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2024-06-28 22:11:58 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-06-28 22:28:47 +1000 |
| commit | 732b32daef80567a7ef5be3d87ae79b6bfd9d82d (patch) | |
| tree | 99d25c29d881722329d0047693b25d9099c7fc3f /arch/powerpc/kernel/entry_32.S | |
| parent | e939da89d024a0de66b0270f1f1fab5fc44c74dd (diff) | |
powerpc: Remove core support for 40x
Now that 40x platforms have gone, remove support
for 40x in the core of powerpc arch.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240628121201.130802-4-mpe@ellerman.id.au
Diffstat (limited to 'arch/powerpc/kernel/entry_32.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 40 |
1 files changed, 0 insertions, 40 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index 7eda33a24bb4..070eab8b6a28 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -158,9 +158,6 @@ syscall_exit_finish: 1: REST_GPR(2, r1) REST_GPR(1, r1) rfi -#ifdef CONFIG_40x - b . /* Prevent prefetch past rfi */ -#endif 3: mtcr r5 lwz r4,_CTR(r1) @@ -237,9 +234,6 @@ fast_exception_return: REST_GPR(12, r11) REST_GPR(11, r11) rfi -#ifdef CONFIG_40x - b . /* Prevent prefetch past rfi */ -#endif _ASM_NOKPROBE_SYMBOL(fast_exception_return) /* aargh, a nonrecoverable interrupt, panic */ @@ -296,9 +290,6 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS) REST_GPR(0, r1) REST_GPR(1, r1) rfi -#ifdef CONFIG_40x - b . /* Prevent prefetch past rfi */ -#endif .Lrestore_nvgprs: REST_NVGPRS(r1) @@ -346,9 +337,6 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS) REST_GPR(0, r1) REST_GPR(1, r1) rfi -#ifdef CONFIG_40x - b . /* Prevent prefetch past rfi */ -#endif 1: /* * Emulate stack store with update. New r1 value was already calculated @@ -375,9 +363,6 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_STCX_CHECKS_ADDRESS) mfspr r9, SPRN_SPRG_SCRATCH0 #endif rfi -#ifdef CONFIG_40x - b . /* Prevent prefetch past rfi */ -#endif _ASM_NOKPROBE_SYMBOL(interrupt_return) #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE) @@ -395,17 +380,6 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return) * time of the critical interrupt. * */ -#ifdef CONFIG_40x -#define PPC_40x_TURN_OFF_MSR_DR \ - /* avoid any possible TLB misses here by turning off MSR.DR, we \ - * assume the instructions here are mapped by a pinned TLB entry */ \ - li r10,MSR_IR; \ - mtmsr r10; \ - isync; \ - tophys(r1, r1); -#else -#define PPC_40x_TURN_OFF_MSR_DR -#endif #define RET_FROM_EXC_LEVEL(exc_lvl_srr0, exc_lvl_srr1, exc_lvl_rfi) \ REST_NVGPRS(r1); \ @@ -423,7 +397,6 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return) mtlr r11; \ lwz r10,_CCR(r1); \ mtcrf 0xff,r10; \ - PPC_40x_TURN_OFF_MSR_DR; \ lwz r9,_DEAR(r1); \ lwz r10,_ESR(r1); \ mtspr SPRN_DEAR,r9; \ @@ -471,19 +444,6 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return) #define RESTORE_MMU_REGS #endif -#ifdef CONFIG_40x - .globl ret_from_crit_exc -ret_from_crit_exc: - lis r9,crit_srr0@ha; - lwz r9,crit_srr0@l(r9); - lis r10,crit_srr1@ha; - lwz r10,crit_srr1@l(r10); - mtspr SPRN_SRR0,r9; - mtspr SPRN_SRR1,r10; - RET_FROM_EXC_LEVEL(SPRN_CSRR0, SPRN_CSRR1, PPC_RFCI) -_ASM_NOKPROBE_SYMBOL(ret_from_crit_exc) -#endif /* CONFIG_40x */ - #ifdef CONFIG_BOOKE .globl ret_from_crit_exc ret_from_crit_exc: |