Remove qemu-common.h include from most units

[mirror_qemu.git] / hw / s390x / ipl.c

diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
index d46b1f094f7571e34a419ede5005c1eee9078229..84971e537b3e4dd695b21842a65c2ace350e517f 100644 (file)
--- a/hw/s390x/ipl.c
+++ b/hw/s390x/ipl.c
@@ -13,13 +13,11 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
+#include "qemu/datadir.h"
 #include "qapi/error.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"
-#include "sysemu/sysemu.h"
 #include "sysemu/tcg.h"
-#include "cpu.h"
 #include "elf.h"
 #include "hw/loader.h"
 #include "hw/qdev-properties.h"
@@ -38,7 +36,9 @@
 
 #define KERN_IMAGE_START                0x010000UL
 #define LINUX_MAGIC_ADDR                0x010008UL
+#define KERN_PARM_AREA_SIZE_ADDR        0x010430UL
 #define KERN_PARM_AREA                  0x010480UL
+#define LEGACY_KERN_PARM_AREA_SIZE      0x000380UL
 #define INITRD_START                    0x800000UL
 #define INITRD_PARM_START               0x010408UL
 #define PARMFILE_START                  0x001000UL
@@ -110,8 +110,24 @@ static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr)
     return srcaddr + dstaddr;
 }
 
+static uint64_t get_max_kernel_cmdline_size(void)
+{
+    uint64_t *size_ptr = rom_ptr(KERN_PARM_AREA_SIZE_ADDR, sizeof(*size_ptr));
+
+    if (size_ptr) {
+        uint64_t size;
+
+        size = be64_to_cpu(*size_ptr);
+        if (size) {
+            return size;
+        }
+    }
+    return LEGACY_KERN_PARM_AREA_SIZE;
+}
+
 static void s390_ipl_realize(DeviceState *dev, Error **errp)
 {
+    MachineState *ms = MACHINE(qdev_get_machine());
     S390IPLState *ipl = S390_IPL(dev);
     uint32_t *ipl_psw;
     uint64_t pentry;
@@ -126,13 +142,9 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
      * even if an external kernel has been defined.
      */
     if (!ipl->kernel || ipl->enforce_bios) {
-        uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;
-
-        if (bios_name == NULL) {
-            bios_name = ipl->firmware;
-        }
+        uint64_t fwbase = (MIN(ms->ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;
 
-        bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
+        bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->firmware);
         if (bios_filename == NULL) {
             error_setg(errp, "could not find stage1 bootloader");
             return;
@@ -154,7 +166,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
         g_free(bios_filename);
 
         if (bios_size == -1) {
-            error_setg(errp, "could not load bootloader '%s'", bios_name);
+            error_setg(errp, "could not load bootloader '%s'", ipl->firmware);
             return;
         }
 
@@ -167,7 +179,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
                                &pentry, NULL,
                                NULL, NULL, 1, EM_S390, 0, 0);
         if (kernel_size < 0) {
-            kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
+            kernel_size = load_image_targphys(ipl->kernel, 0, ms->ram_size);
             if (kernel_size < 0) {
                 error_setg(errp, "could not load kernel '%s'", ipl->kernel);
                 return;
@@ -194,10 +206,22 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
          * loader) and it won't work. For this case we force it to 0x10000, too.
          */
         if (pentry == KERN_IMAGE_START || pentry == 0x800) {
-            char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1);
+            size_t cmdline_size = strlen(ipl->cmdline) + 1;
+            char *parm_area = rom_ptr(KERN_PARM_AREA, cmdline_size);
+
             ipl->start_addr = KERN_IMAGE_START;
             /* Overwrite parameters in the kernel image, which are "rom" */
             if (parm_area) {
+                uint64_t max_cmdline_size = get_max_kernel_cmdline_size();
+
+                if (cmdline_size > max_cmdline_size) {
+                    error_setg(errp,
+                               "kernel command line exceeds maximum size:"
+                               " %zu > %" PRIu64,
+                               cmdline_size, max_cmdline_size);
+                    return;
+                }
+
                 strcpy(parm_area, ipl->cmdline);
             }
         } else {
@@ -214,7 +238,7 @@ static void s390_ipl_realize(DeviceState *dev, Error **errp)
                 initrd_offset += 0x100000;
             }
             initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
-                                              ram_size - initrd_offset);
+                                              ms->ram_size - initrd_offset);
             if (initrd_size == -1) {
                 error_setg(errp, "could not load initrd '%s'", ipl->initrd);
                 return;
@@ -452,6 +476,7 @@ int s390_ipl_set_loadparm(uint8_t *loadparm)
 
 static int load_netboot_image(Error **errp)
 {
+    MachineState *ms = MACHINE(qdev_get_machine());
     S390IPLState *ipl = get_ipl_device();
     char *netboot_filename;
     MemoryRegion *sysmem =  get_system_memory();
@@ -484,7 +509,7 @@ static int load_netboot_image(Error **errp)
                             false);
 
     if (img_size < 0) {
-        img_size = load_image_size(netboot_filename, ram_ptr, ram_size);
+        img_size = load_image_size(netboot_filename, ram_ptr, ms->ram_size);
         ipl->start_addr = KERN_IMAGE_START;
     }
 
@@ -630,7 +655,8 @@ void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type)
         }
     }
     if (reset_type == S390_RESET_MODIFIED_CLEAR ||
-        reset_type == S390_RESET_LOAD_NORMAL) {
+        reset_type == S390_RESET_LOAD_NORMAL ||
+        reset_type == S390_RESET_PV) {
         /* ignore -no-reboot, send no event  */
         qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET);
     } else {
@@ -713,7 +739,6 @@ int s390_ipl_pv_unpack(void)
 void s390_ipl_prepare_cpu(S390CPU *cpu)
 {
     S390IPLState *ipl = get_ipl_device();
-    Error *err = NULL;
 
     cpu->env.psw.addr = ipl->start_addr;
     cpu->env.psw.mask = IPL_PSW_MASK;
@@ -725,10 +750,7 @@ void s390_ipl_prepare_cpu(S390CPU *cpu)
         }
     }
     if (ipl->netboot) {
-        if (load_netboot_image(&err) < 0) {
-            error_report_err(err);
-            exit(1);
-        }
+        load_netboot_image(&error_fatal);
         ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr);
     }
     s390_ipl_set_boot_menu(ipl);