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Re: [PATCH v2] riscv: sifive_u: Add a "serial" property for board serial

From: Bin Meng
Subject: Re: [PATCH v2] riscv: sifive_u: Add a "serial" property for board serial number
Date: Sun, 23 Feb 2020 11:59:34 +0800

On Sun, Feb 16, 2020 at 9:55 PM Bin Meng <address@hidden> wrote:
> At present the board serial number is hard-coded to 1, and passed
> to OTP model during initialization. Firmware (FSBL, U-Boot) uses
> the serial number to generate a unique MAC address for the on-chip
> ethernet controller. When multiple QEMU 'sifive_u' instances are
> created and connected to the same subnet, they all have the same
> MAC address hence it creates a unusable network.
> A new "serial" property is introduced to specify the board serial
> number. When not given, the default serial number 1 is used.
> Signed-off-by: Bin Meng <address@hidden>
> ---
> Changes in v2:
> - Move setting OTP serial number property from riscv_sifive_u_soc_init()
>   to riscv_sifive_u_soc_realize(), to fix the 'check-qtest-riscv' error.
>   I am not really sure why doing so could fix the 'make check' error.
>   The v1 patch worked fine and nothing seems wrong.
>  hw/riscv/sifive_u.c         | 21 ++++++++++++++++++++-
>  include/hw/riscv/sifive_u.h |  1 +
>  2 files changed, 21 insertions(+), 1 deletion(-)



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