From patchwork Fri Oct 19 20:43:40 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [v3,23/26] q35: automatically load the q35 dsdt table Date: Fri, 19 Oct 2012 10:43:40 -0000 From: Jason Baron X-Patchwork-Id: 192819 Message-Id: <4ea8455e27856a0768bdc6b9f7e4b3450610cfde.1350677362.git.jbaron@redhat.com> To: qemu-devel@nongnu.org Cc: aliguori@us.ibm.com, juzhang@redhat.com, mst@redhat.com, jan.kiszka@siemens.com, armbru@redhat.com, agraf@suse.de, blauwirbel@gmail.com, yamahata@valinux.co.jp, alex.williamson@redhat.com, kevin@koconnor.net, avi@redhat.com, mkletzan@redhat.com, pbonzini@redhat.com, lcapitulino@redhat.com, afaerber@suse.de, kraxel@redhat.com From: Jason Baron Automatically, locate the required q35 dsdt table on load. Otherwise we error out. This could be done in the bios, but its harder to produce a good error message. Signed-off-by: Jason Baron --- hw/pc.c | 19 +++++++++++++++++++ hw/pc.h | 2 ++ hw/pc_q35.c | 7 +++++++ 3 files changed, 28 insertions(+), 0 deletions(-) diff --git a/hw/pc.c b/hw/pc.c index dd79d14..ad8d502 100644 --- a/hw/pc.c +++ b/hw/pc.c @@ -1149,3 +1149,22 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i); } } + +int find_and_load_dsdt(const char *dsdt_name) +{ + char *filename; + char buf[1024]; + + filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dsdt_name); + if (!filename) { + return -1; + } + snprintf(buf, sizeof(buf), "file=%s", filename); + g_free(filename); + if (acpi_table_add(buf) < 0) { + fprintf(stderr, "Wrong acpi table provided\n"); + return -1; + } + + return 0; +} diff --git a/hw/pc.h b/hw/pc.h index ee98f59..72cc408 100644 --- a/hw/pc.h +++ b/hw/pc.h @@ -214,5 +214,7 @@ void pc_system_firmware_init(MemoryRegion *rom_memory); #define E820_UNUSABLE 5 int e820_add_entry(uint64_t, uint64_t, uint32_t); +int find_and_load_dsdt(const char *dsdt_name); + #endif diff --git a/hw/pc_q35.c b/hw/pc_q35.c index 82ad4e8..ca30b65 100644 --- a/hw/pc_q35.c +++ b/hw/pc_q35.c @@ -223,6 +223,13 @@ static void pc_q35_init(ram_addr_t ram_size, qemu_irq *i8259; int i; + /* let's first see if we can find the proper dsdt */ + if (find_and_load_dsdt("q35-acpi-dsdt.aml")) { + fprintf(stderr, "Couldn't find q35 dsdt table!\n" + "Try updating your bios.\n"); + exit(1); + } + pc_cpus_init(cpu_model); kvmclock_create();