From: Alistair Francis <alistair23@gmail.com>
To: Anup Patel <anup.patel@wdc.com>
Cc: Peter Maydell <peter.maydell@linaro.org>,
"open list:RISC-V" <qemu-riscv@nongnu.org>,
Sagar Karandikar <sagark@eecs.berkeley.edu>,
Anup Patel <anup@brainfault.org>,
"qemu-devel@nongnu.org Developers" <qemu-devel@nongnu.org>,
Atish Patra <atish.patra@wdc.com>,
Alistair Francis <Alistair.Francis@wdc.com>,
Palmer Dabbelt <palmer@dabbelt.com>
Subject: Re: [PATCH 2/2] hw/riscv: virt: Allow passing custom DTB
Date: Fri, 23 Oct 2020 16:33:29 -0700 [thread overview]
Message-ID: <CAKmqyKOT34W4hYCAN+sDYxPpKiaGFYZrov1AbhhhSLp=Uv0C7g@mail.gmail.com> (raw)
In-Reply-To: <20201022053225.2596110-2-anup.patel@wdc.com>
On Wed, Oct 21, 2020 at 10:34 PM Anup Patel <anup.patel@wdc.com> wrote:
>
> Extend virt machine to allow passing custom DTB using "-dtb"
> command-line parameter. This will help users pass modified DTB
> to virt machine.
>
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> hw/riscv/virt.c | 27 ++++++++++++++++++++-------
> 1 file changed, 20 insertions(+), 7 deletions(-)
>
> diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c
> index 41bd2f38ba..d535119e37 100644
> --- a/hw/riscv/virt.c
> +++ b/hw/riscv/virt.c
> @@ -181,6 +181,7 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
> {
> void *fdt;
> int i, cpu, socket;
> + const char *dtb_filename;
> MachineState *mc = MACHINE(s);
> uint64_t addr, size;
> uint32_t *clint_cells, *plic_cells;
> @@ -194,10 +195,20 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
> hwaddr flashsize = virt_memmap[VIRT_FLASH].size / 2;
> hwaddr flashbase = virt_memmap[VIRT_FLASH].base;
>
> - fdt = s->fdt = create_device_tree(&s->fdt_size);
> - if (!fdt) {
> - error_report("create_device_tree() failed");
> - exit(1);
> + dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
> + if (dtb_filename) {
> + fdt = s->fdt = load_device_tree(dtb_filename, &s->fdt_size);
> + if (!fdt) {
> + error_report("load_device_tree() failed");
> + exit(1);
> + }
> + goto update_bootargs;
> + } else {
> + fdt = s->fdt = create_device_tree(&s->fdt_size);
> + if (!fdt) {
> + error_report("create_device_tree() failed");
> + exit(1);
> + }
> }
>
> qemu_fdt_setprop_string(fdt, "/", "model", "riscv-virtio,qemu");
> @@ -418,9 +429,6 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
>
> qemu_fdt_add_subnode(fdt, "/chosen");
> qemu_fdt_setprop_string(fdt, "/chosen", "stdout-path", name);
> - if (cmdline) {
> - qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> - }
> g_free(name);
>
> name = g_strdup_printf("/soc/rtc@%lx", (long)memmap[VIRT_RTC].base);
> @@ -441,6 +449,11 @@ static void create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap,
> 2, flashbase + flashsize, 2, flashsize);
> qemu_fdt_setprop_cell(s->fdt, name, "bank-width", 4);
> g_free(name);
> +
> +update_bootargs:
> + if (cmdline) {
> + qemu_fdt_setprop_string(fdt, "/chosen", "bootargs", cmdline);
> + }
> }
>
> static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem,
> --
> 2.25.1
>
>
next prev parent reply other threads:[~2020-10-23 23:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-22 5:32 [PATCH 1/2] hw/riscv: sifive_u: Allow passing custom DTB Anup Patel
2020-10-22 5:32 ` [PATCH 2/2] hw/riscv: virt: " Anup Patel
2020-10-23 23:33 ` Alistair Francis [this message]
2020-10-23 23:32 ` [PATCH 1/2] hw/riscv: sifive_u: " Alistair Francis
2021-03-24 13:41 ` Bin Meng
2021-03-26 13:29 ` Bin Meng
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAKmqyKOT34W4hYCAN+sDYxPpKiaGFYZrov1AbhhhSLp=Uv0C7g@mail.gmail.com' \
--to=alistair23@gmail.com \
--cc=Alistair.Francis@wdc.com \
--cc=anup.patel@wdc.com \
--cc=anup@brainfault.org \
--cc=atish.patra@wdc.com \
--cc=palmer@dabbelt.com \
--cc=peter.maydell@linaro.org \
--cc=qemu-devel@nongnu.org \
--cc=qemu-riscv@nongnu.org \
--cc=sagark@eecs.berkeley.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).