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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752226437; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=6FXSKJivtKfRuDeZ44HyNDAbvnN70y24q5UM4rhsPdY=; b=Gn6x2FHYGbJmfsLkM/IR2pwT2aLaZLa2bpbJbUiFkRBOKZs7vTZNOMBxRIlEgMYQJgq995 M0+L8WC1/Eja51IBjMKGPpxearZKWbtcj45D32EoBnUsVpv4g79KIvr6keJ6SefXIywBfW eG9ipIprrenuJ5o0FoJYm8JpBP8QOhU= X-MC-Unique: NQa4-P0lNA6AXeQf701qdg-1 X-Mimecast-MFC-AGG-ID: NQa4-P0lNA6AXeQf701qdg_1752226435 From: Thomas Huth To: qemu-devel@nongnu.org Cc: Stefan Hajnoczi , Jared Rossi Subject: [PULL 04/15] pc-bios/s390-ccw: Allow to select a different pxelinux.cfg entry via loadparm Date: Fri, 11 Jul 2025 11:33:29 +0200 Message-ID: <20250711093340.608485-5-thuth@redhat.com> In-Reply-To: <20250711093340.608485-1-thuth@redhat.com> References: <20250711093340.608485-1-thuth@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; 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charset="utf-8" From: Thomas Huth Since we're linking the network booting code into the main firmware binary nowadays, we can support the "loadparm" parameter now quite easily for pxelinux.cfg config files that contain multiple entries. Reviewed-by: Jared Rossi Signed-off-by: Thomas Huth Message-ID: <20250709083443.41574-2-thuth@redhat.com> --- pc-bios/s390-ccw/netmain.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-) diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index 719a547ada0..c0aafca22d2 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -332,6 +332,27 @@ static int load_kernel_with_initrd(filename_ip_t *fn_i= p, return rc; } =20 +static int net_select_and_load_kernel(filename_ip_t *fn_ip, + int num_ent, int selected, + struct pl_cfg_entry *entries) +{ + unsigned int loadparm =3D get_loadparm_index(); + + if (num_ent <=3D 0) { + return -1; + } + + IPL_assert(loadparm <=3D num_ent, + "loadparm is set to an entry that is not available in the " + "pxelinux.cfg file!"); + + if (loadparm > 0) { + selected =3D loadparm - 1; + } + + return load_kernel_with_initrd(fn_ip, &entries[selected]); +} + #define MAX_PXELINUX_ENTRIES 16 =20 static int net_try_pxelinux_cfg(filename_ip_t *fn_ip) @@ -343,11 +364,8 @@ static int net_try_pxelinux_cfg(filename_ip_t *fn_ip) DEFAULT_TFTP_RETRIES, cfgbuf, sizeof(cfgbuf), entries, MAX_PXELINUX_ENTRIES, &def_= ent); - if (num_ent > 0) { - return load_kernel_with_initrd(fn_ip, &entries[def_ent]); - } =20 - return -1; + return net_select_and_load_kernel(fn_ip, num_ent, def_ent, entries); } =20 /** @@ -433,10 +451,8 @@ static int net_try_direct_tftp_load(filename_ip_t *fn_= ip) =20 num_ent =3D pxelinux_parse_cfg(cfgbuf, sizeof(cfgbuf), entries, MAX_PXELINUX_ENTRIES, &def_ent); - if (num_ent <=3D 0) { - return -1; - } - return load_kernel_with_initrd(fn_ip, &entries[def_ent]); + return net_select_and_load_kernel(fn_ip, num_ent, def_ent, + entries); } } =20 --=20 2.50.0