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linux/arch/powerpc/kernel/setup.h

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powerpc: Merge 32-bit and 64-bit setup_arch() There is little enough differences now. mpe: Add a/p/k/setup.h to contain the prototypes and empty versions of functions we need, rather than using weak functions. Add a few other empty versions to avoid as many #ifdefs as possible in the code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-05 13:07:51 +08:00
/*
* Prototypes for functions that are shared between setup_(32|64|common).c
*
* Copyright 2016 Michael Ellerman, IBM Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifndef __ARCH_POWERPC_KERNEL_SETUP_H
#define __ARCH_POWERPC_KERNEL_SETUP_H
void initialize_cache_info(void);
void irqstack_early_init(void);
#ifdef CONFIG_PPC32
void setup_power_save(void);
#else
static inline void setup_power_save(void) { };
#endif
#if defined(CONFIG_PPC64) && defined(CONFIG_SMP)
void check_smt_enabled(void);
#else
static inline void check_smt_enabled(void) { };
#endif
#if defined(CONFIG_PPC_BOOK3E) && defined(CONFIG_SMP)
void setup_tlb_core_data(void);
#else
static inline void setup_tlb_core_data(void) { };
#endif
#if defined(CONFIG_PPC_BOOK3E) || defined(CONFIG_BOOKE) || defined(CONFIG_40x)
void exc_lvl_early_init(void);
#else
static inline void exc_lvl_early_init(void) { };
#endif
#ifdef CONFIG_PPC64
void emergency_stack_init(void);
#else
static inline void emergency_stack_init(void) { };
#endif
powerpc/64s: Relax PACA address limitations Book3S PACA memory allocation is restricted by the RMA limit and also must not take SLB faults when accessed in virtual mode. Currently a fixed 256MB limit is used for this, which is imprecise and sub-optimal. Update the paca allocation limits to use use the ppc64_rma_size for RMA limit, and share the safe_stack_limit() that is currently used for stack allocations that must not take virtual mode faults. The safe_stack_limit() name is changed to ppc64_bolted_size() to match ppc64_rma_size and some comments are updated. We also need to use early_mmu_has_feature() because we are now calling this function prior to the jump label patching that enables mmu_has_feature(). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Change mmu_has_feature() to early_mmu_has_feature()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-12-22 19:17:13 +08:00
#ifdef CONFIG_PPC64
u64 ppc64_bolted_size(void);
powerpc/64: move default SPR recording Move this into the early setup code, and don't iterate over CPU masks. We don't want to call into sysfs so early from setup, and a future patch won't initialize CPU masks by the time this is called. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Fold in incremental fix from Nick for DSCR handling] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-02-13 23:08:17 +08:00
/* Default SPR values from firmware/kexec */
extern unsigned long spr_default_dscr;
powerpc/64s: Relax PACA address limitations Book3S PACA memory allocation is restricted by the RMA limit and also must not take SLB faults when accessed in virtual mode. Currently a fixed 256MB limit is used for this, which is imprecise and sub-optimal. Update the paca allocation limits to use use the ppc64_rma_size for RMA limit, and share the safe_stack_limit() that is currently used for stack allocations that must not take virtual mode faults. The safe_stack_limit() name is changed to ppc64_bolted_size() to match ppc64_rma_size and some comments are updated. We also need to use early_mmu_has_feature() because we are now calling this function prior to the jump label patching that enables mmu_has_feature(). Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Change mmu_has_feature() to early_mmu_has_feature()] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-12-22 19:17:13 +08:00
#endif
powerpc: Merge 32-bit and 64-bit setup_arch() There is little enough differences now. mpe: Add a/p/k/setup.h to contain the prototypes and empty versions of functions we need, rather than using weak functions. Add a few other empty versions to avoid as many #ifdefs as possible in the code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-05 13:07:51 +08:00
/*
* Having this in kvm_ppc.h makes include dependencies too
* tricky to solve for setup-common.c so have it here.
*/
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
void kvm_cma_reserve(void);
#else
static inline void kvm_cma_reserve(void) { };
#endif
powerpc/tau: Synchronize function prototypes and body Some function prototypes and body for Thermal Assist Units were not in sync. Update the function definition to match the existing function declaration found in `setup-common.c`, changing an `int` return type to a `u32` return type. Move the prototypes to a header file. Fix the following warnings, treated as error with W=1: arch/powerpc/kernel/tau_6xx.c:257:5: error: no previous prototype for ‘cpu_temp_both’ [-Werror=missing-prototypes] arch/powerpc/kernel/tau_6xx.c:262:5: error: no previous prototype for ‘cpu_temp’ [-Werror=missing-prototypes] arch/powerpc/kernel/tau_6xx.c:267:5: error: no previous prototype for ‘tau_interrupts’ [-Werror=missing-prototypes] Compile tested with CONFIG_TAU_INT. Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-04-05 04:10:28 +08:00
#ifdef CONFIG_TAU
u32 cpu_temp(unsigned long cpu);
u32 cpu_temp_both(unsigned long cpu);
u32 tau_interrupts(unsigned long cpu);
#endif /* CONFIG_TAU */
powerpc: Merge 32-bit and 64-bit setup_arch() There is little enough differences now. mpe: Add a/p/k/setup.h to contain the prototypes and empty versions of functions we need, rather than using weak functions. Add a few other empty versions to avoid as many #ifdefs as possible in the code. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-05 13:07:51 +08:00
#endif /* __ARCH_POWERPC_KERNEL_SETUP_H */