f3eac42665
The platform's RNG must be available before random_init() in order to be
useful for initial seeding, which in turn means that it needs to be
called from setup_arch(), rather than from an init call.
Complicating things, however, is that POWER8 systems need some per-cpu
state and kmalloc, which isn't available at this stage. So we split
things up into an early phase and a later opportunistic phase. This
commit also removes some noisy log messages that don't add much.
Fixes: a4da0d50b2a0 ("powerpc: Implement arch_get_random_long/int() for powernv")
Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[mpe: Add of_node_put(), use pnv naming, minor change log editing]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220621140849.127227-1-Jason@zx2c4.com
48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _POWERNV_H
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#define _POWERNV_H
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/*
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* There's various hacks scattered throughout the generic powerpc arch code
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* that needs to call into powernv platform stuff. The prototypes for those
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* functions are in asm/powernv.h
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*/
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#include <asm/powernv.h>
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#ifdef CONFIG_SMP
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extern void pnv_smp_init(void);
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#else
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static inline void pnv_smp_init(void) { }
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#endif
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extern void pnv_platform_error_reboot(struct pt_regs *regs, const char *msg) __noreturn;
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struct pci_dev;
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#ifdef CONFIG_PCI
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extern void pnv_pci_init(void);
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extern void pnv_pci_shutdown(void);
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#else
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static inline void pnv_pci_init(void) { }
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static inline void pnv_pci_shutdown(void) { }
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#endif
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extern u32 pnv_get_supported_cpuidle_states(void);
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extern void pnv_lpc_init(void);
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extern void opal_handle_events(void);
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extern bool opal_have_pending_events(void);
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extern void opal_event_shutdown(void);
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bool cpu_core_split_required(void);
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struct memcons;
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ssize_t memcons_copy(struct memcons *mc, char *to, loff_t pos, size_t count);
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u32 __init memcons_get_size(struct memcons *mc);
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struct memcons *__init memcons_init(struct device_node *node, const char *mc_prop_name);
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void pnv_rng_init(void);
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#endif /* _POWERNV_H */
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