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20a9689b36
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. Fortunately,
each platform already has a setup_arch function pointer, which means
it's easy to wire this up. This commit also removes some noisy log
messages that don't add much.
Fixes: c25769fdda ("powerpc/microwatt: Add support for hardware random number generator")
Cc: stable@vger.kernel.org # v5.14+
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220611151015.548325-2-Jason@zx2c4.com
50 lines
1015 B
C
50 lines
1015 B
C
/*
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* Microwatt FPGA-based SoC platform setup code.
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*
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* Copyright 2020 Paul Mackerras (paulus@ozlabs.org), IBM Corp.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/stddef.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <asm/machdep.h>
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#include <asm/time.h>
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#include <asm/xics.h>
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#include <asm/udbg.h>
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#include "microwatt.h"
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static void __init microwatt_init_IRQ(void)
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{
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xics_init();
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}
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static int __init microwatt_probe(void)
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{
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return of_machine_is_compatible("microwatt-soc");
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}
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static int __init microwatt_populate(void)
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{
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return of_platform_default_populate(NULL, NULL, NULL);
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}
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machine_arch_initcall(microwatt, microwatt_populate);
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static void __init microwatt_setup_arch(void)
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{
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microwatt_rng_init();
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}
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define_machine(microwatt) {
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.name = "microwatt",
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.probe = microwatt_probe,
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.init_IRQ = microwatt_init_IRQ,
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.setup_arch = microwatt_setup_arch,
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.progress = udbg_progress,
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.calibrate_decr = generic_calibrate_decr,
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};
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