a1ee38ab1a
Other virt VMs can pass RNG seeds via the "rng-seed" device tree property or via UEFI, but m68k doesn't have either. Instead it has its own bootinfo protocol. So this commit adds support for receiving a RNG seed from it, which will be used at the earliest possible time in boot, just like device tree. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20220626111509.330159-1-Jason@zx2c4.com Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
26 lines
758 B
C
26 lines
758 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* asm/bootinfo-virt.h -- Virtual-m68k-specific boot information definitions
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*/
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#ifndef _UAPI_ASM_M68K_BOOTINFO_VIRT_H
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#define _UAPI_ASM_M68K_BOOTINFO_VIRT_H
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#define BI_VIRT_QEMU_VERSION 0x8000
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#define BI_VIRT_GF_PIC_BASE 0x8001
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#define BI_VIRT_GF_RTC_BASE 0x8002
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#define BI_VIRT_GF_TTY_BASE 0x8003
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#define BI_VIRT_VIRTIO_BASE 0x8004
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#define BI_VIRT_CTRL_BASE 0x8005
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/*
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* A random seed used to initialize the RNG. Record format:
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*
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* - length [ 2 bytes, 16-bit big endian ]
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* - seed data [ `length` bytes, padded to preserve 2-byte alignment ]
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*/
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#define BI_VIRT_RNG_SEED 0x8006
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#define VIRT_BOOTI_VERSION MK_BI_VERSION(2, 0)
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#endif /* _UAPI_ASM_M68K_BOOTINFO_MAC_H */
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