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Violators will be prosecuted for from ; Fri, 23 Feb 2018 10:43:46 -0500 From: "Collin L. Walling" Date: Fri, 23 Feb 2018 10:43:12 -0500 In-Reply-To: <1519400599-21081-1-git-send-email-walling@linux.vnet.ibm.com> References: <1519400599-21081-1-git-send-email-walling@linux.vnet.ibm.com> Message-Id: <1519400599-21081-7-git-send-email-walling@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v9 06/13] s390-ccw: parse and set boot menu options List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Cc: borntraeger@de.ibm.com, frankja@linux.vnet.ibm.com, cohuck@redhat.com, thuth@redhat.com, david@redhat.com, alifm@linux.vnet.ibm.com, eblake@redhat.com, mihajlov@linux.vnet.ibm.com Set boot menu options for an s390 guest and store them in the iplb. These options are set via the QEMU command line option: -boot menu=on|off[,splash-time=X] or via the libvirt domain xml: Where X represents some positive integer representing milliseconds. Any value set for loadparm will override all boot menu options. If loadparm=PROMPT, then the menu will be enabled without a timeout. Signed-off-by: Collin L. Walling Reviewed-by: Janosch Frank Reviewed-by: Thomas Huth --- hw/s390x/ipl.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++++ hw/s390x/ipl.h | 9 +++++++-- pc-bios/s390-ccw/iplb.h | 9 +++++++-- 3 files changed, 66 insertions(+), 4 deletions(-) diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index 79f5a58..ee2039d 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -23,6 +23,9 @@ #include "hw/s390x/ebcdic.h" #include "ipl.h" #include "qemu/error-report.h" +#include "qemu/config-file.h" +#include "qemu/cutils.h" +#include "qemu/option.h" #define KERN_IMAGE_START 0x010000UL #define KERN_PARM_AREA 0x010480UL @@ -219,6 +222,54 @@ static Property s390_ipl_properties[] = { DEFINE_PROP_END_OF_LIST(), }; +static void s390_ipl_set_boot_menu(S390IPLState *ipl) +{ + QemuOptsList *plist = qemu_find_opts("boot-opts"); + QemuOpts *opts = QTAILQ_FIRST(&plist->head); + uint8_t *flags = &ipl->qipl.qipl_flags; + uint32_t *timeout = &ipl->qipl.boot_menu_timeout; + const char *tmp; + unsigned long splash_time = 0; + + if (!get_boot_device(0)) { + if (boot_menu) { + error_report("boot menu requires a bootindex to be specified for " + "the IPL device."); + } + return; + } + + switch (ipl->iplb.pbt) { + case S390_IPL_TYPE_CCW: + break; + default: + error_report("boot menu is not supported for this device type."); + return; + } + + if (!boot_menu) { + return; + } + + *flags |= QIPL_FLAG_BM_OPTS_CMD; + + tmp = qemu_opt_get(opts, "splash-time"); + + if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { + error_report("splash-time is invalid, forcing it to 0."); + *timeout = 0; + return; + } + + if (splash_time > 0xffffffff) { + error_report("splash-time is too large, forcing it to max value."); + *timeout = 0xffffffff; + return; + } + + *timeout = cpu_to_be32(splash_time); +} + static bool s390_gen_initial_iplb(S390IPLState *ipl) { DeviceState *dev_st; @@ -435,6 +486,7 @@ void s390_ipl_prepare_cpu(S390CPU *cpu) } ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); } + s390_ipl_set_boot_menu(ipl); s390_ipl_prepare_qipl(cpu); } diff --git a/hw/s390x/ipl.h b/hw/s390x/ipl.h index 08926a3..3a37924 100644 --- a/hw/s390x/ipl.h +++ b/hw/s390x/ipl.h @@ -91,6 +91,9 @@ void s390_reipl_request(void); #define QIPL_ADDRESS 0xcc +/* Boot Menu flags */ +#define QIPL_FLAG_BM_OPTS_CMD 0x80 + /* * The QEMU IPL Parameters will be stored at absolute address * 204 (0xcc) which means it is 32-bit word aligned but not @@ -104,9 +107,11 @@ void s390_reipl_request(void); * in pc-bios/s390-ccw/iplb.h. */ struct QemuIplParameters { - uint8_t reserved1[4]; + uint8_t qipl_flags; + uint8_t reserved1[3]; uint64_t netboot_start_addr; - uint8_t reserved2[16]; + uint32_t boot_menu_timeout; + uint8_t reserved2[12]; } QEMU_PACKED; typedef struct QemuIplParameters QemuIplParameters; diff --git a/pc-bios/s390-ccw/iplb.h b/pc-bios/s390-ccw/iplb.h index 31d2934..832bb94 100644 --- a/pc-bios/s390-ccw/iplb.h +++ b/pc-bios/s390-ccw/iplb.h @@ -74,14 +74,19 @@ extern IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); #define QIPL_ADDRESS 0xcc +/* Boot Menu flags */ +#define QIPL_FLAG_BM_OPTS_CMD 0x80 + /* * This definition must be kept in sync with the defininition * in hw/s390x/ipl.h */ struct QemuIplParameters { - uint8_t reserved1[4]; + uint8_t qipl_flags; + uint8_t reserved1[3]; uint64_t netboot_start_addr; - uint8_t reserved2[16]; + uint32_t boot_menu_timeout; + uint8_t reserved2[12]; } __attribute__ ((packed)); typedef struct QemuIplParameters QemuIplParameters; -- 2.7.4