@@ -20,7 +20,7 @@
#include <string.h>
extern QemuIplParameters qipl;
-extern IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE)));
+extern IplParameterBlock *iplb;
extern bool have_iplb;
struct IplInfoReportBlockHeader {
@@ -85,6 +85,14 @@ struct IplInfoReportBlock {
} __attribute__ ((packed));
typedef struct IplInfoReportBlock IplInfoReportBlock;
+struct IplBlocks {
+ IplParameterBlock iplb;
+ IplInfoReportBlock iirb;
+} __attribute__ ((packed));
+typedef struct IplBlocks IplBlocks;
+
+extern IplBlocks ipl_data __attribute__((__aligned__(PAGE_SIZE)));
+
#define S390_IPL_TYPE_FCP 0x00
#define S390_IPL_TYPE_CCW 0x02
#define S390_IPL_TYPE_QEMU_SCSI 0xff
@@ -127,7 +135,7 @@ static inline bool load_next_iplb(void)
qipl.index++;
next_iplb = (IplParameterBlock *) qipl.next_iplb;
- memcpy(&iplb, next_iplb, sizeof(IplParameterBlock));
+ memcpy(iplb, next_iplb, sizeof(IplParameterBlock));
qipl.chain_len--;
qipl.next_iplb = qipl.next_iplb + sizeof(IplParameterBlock);
@@ -43,11 +43,11 @@ int jump_to_IPL_code(uint64_t address)
* The IPLB for QEMU SCSI type devices must be rebuilt during re-ipl. The
* iplb.devno is set to the boot position of the target SCSI device.
*/
- if (iplb.pbt == S390_IPL_TYPE_QEMU_SCSI) {
- iplb.devno = qipl.index;
+ if (iplb->pbt == S390_IPL_TYPE_QEMU_SCSI) {
+ iplb->devno = qipl.index;
}
- if (have_iplb && !set_iplb(&iplb)) {
+ if (have_iplb && !set_iplb(iplb)) {
panic("Failed to set IPLB");
}
@@ -22,7 +22,9 @@
static SubChannelId blk_schid = { .one = 1 };
static char loadparm_str[LOADPARM_LEN + 1];
QemuIplParameters qipl;
-IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE)));
+/* Ensure that IPLB and IIRB are page aligned and sequential in memory */
+IplBlocks ipl_data;
+IplParameterBlock *iplb;
bool have_iplb;
static uint16_t cutype;
LowCore *lowcore; /* Yes, this *is* a pointer to address 0 */
@@ -51,7 +53,7 @@ void write_subsystem_identification(void)
void write_iplb_location(void)
{
if (cutype == CU_TYPE_VIRTIO && virtio_get_device_type() != VIRTIO_ID_NET) {
- lowcore->ptr_iplb = ptr2u32(&iplb);
+ lowcore->ptr_iplb = ptr2u32(iplb);
}
}
@@ -162,7 +164,7 @@ static void menu_setup(void)
return;
}
- switch (iplb.pbt) {
+ switch (iplb->pbt) {
case S390_IPL_TYPE_CCW:
case S390_IPL_TYPE_QEMU_SCSI:
menu_set_parms(qipl.qipl_flags & BOOT_MENU_FLAG_MASK,
@@ -191,8 +193,8 @@ static void boot_setup(void)
{
char lpmsg[] = "LOADPARM=[________]\n";
- if (have_iplb && memcmp(iplb.loadparm, NO_LOADPARM, LOADPARM_LEN) != 0) {
- ebcdic_to_ascii((char *) iplb.loadparm, loadparm_str, LOADPARM_LEN);
+ if (have_iplb && memcmp(iplb->loadparm, NO_LOADPARM, LOADPARM_LEN) != 0) {
+ ebcdic_to_ascii((char *) iplb->loadparm, loadparm_str, LOADPARM_LEN);
} else {
sclp_get_loadparm_ascii(loadparm_str);
}
@@ -216,21 +218,21 @@ static bool find_boot_device(void)
VDev *vdev = virtio_get_device();
bool found = false;
- switch (iplb.pbt) {
+ switch (iplb->pbt) {
case S390_IPL_TYPE_CCW:
vdev->scsi_device_selected = false;
- debug_print_int("device no. ", iplb.ccw.devno);
- blk_schid.ssid = iplb.ccw.ssid & 0x3;
+ debug_print_int("device no. ", iplb->ccw.devno);
+ blk_schid.ssid = iplb->ccw.ssid & 0x3;
debug_print_int("ssid ", blk_schid.ssid);
- found = find_subch(iplb.ccw.devno);
+ found = find_subch(iplb->ccw.devno);
break;
case S390_IPL_TYPE_QEMU_SCSI:
vdev->scsi_device_selected = true;
- vdev->selected_scsi_device.channel = iplb.scsi.channel;
- vdev->selected_scsi_device.target = iplb.scsi.target;
- vdev->selected_scsi_device.lun = iplb.scsi.lun;
- blk_schid.ssid = iplb.scsi.ssid & 0x3;
- found = find_subch(iplb.scsi.devno);
+ vdev->selected_scsi_device.channel = iplb->scsi.channel;
+ vdev->selected_scsi_device.target = iplb->scsi.target;
+ vdev->selected_scsi_device.lun = iplb->scsi.lun;
+ blk_schid.ssid = iplb->scsi.ssid & 0x3;
+ found = find_subch(iplb->scsi.devno);
break;
default:
puts("Unsupported IPLB");
@@ -311,10 +313,12 @@ static void probe_boot_device(void)
void main(void)
{
+ iplb = &ipl_data.iplb;
+
copy_qipl();
sclp_setup();
css_setup();
- have_iplb = store_iplb(&iplb);
+ have_iplb = store_iplb(iplb);
if (!have_iplb) {
boot_setup();
probe_boot_device();
@@ -488,11 +488,11 @@ static bool virtio_setup(void)
*/
enable_mss_facility();
- if (have_iplb || store_iplb(&iplb)) {
- IPL_assert(iplb.pbt == S390_IPL_TYPE_CCW, "IPL_TYPE_CCW expected");
- dev_no = iplb.ccw.devno;
+ if (have_iplb || store_iplb(iplb)) {
+ IPL_assert(iplb->pbt == S390_IPL_TYPE_CCW, "IPL_TYPE_CCW expected");
+ dev_no = iplb->ccw.devno;
debug_print_int("device no. ", dev_no);
- net_schid.ssid = iplb.ccw.ssid & 0x3;
+ net_schid.ssid = iplb->ccw.ssid & 0x3;
debug_print_int("ssid ", net_schid.ssid);
found = find_net_dev(&schib, dev_no);
} else {
This patch is necessary because of the architectural design of IPL Parameter Block (IPLB) and IPL Information Report Block (IIRB). IIRB will be introduced in the next patch. Define a memory space for both IPL Parameter Block (IPLB) and IPL Information Report Block (IIRB) since IIRB is stored immediately following IPLB. Convert IPLB to pointer and it points to the start of the defined memory space. IIRB points to the end of IPLB. Signed-off-by: Zhuoying Cai <zycai@linux.ibm.com> --- pc-bios/s390-ccw/iplb.h | 12 ++++++++++-- pc-bios/s390-ccw/jump2ipl.c | 6 +++--- pc-bios/s390-ccw/main.c | 34 +++++++++++++++++++--------------- pc-bios/s390-ccw/netmain.c | 8 ++++---- 4 files changed, 36 insertions(+), 24 deletions(-)