@@ -1,18 +1,4 @@
-NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o
-
-LIBNET_INC := -I$(SLOF_DIR)/lib/libnet
-
-NETLDFLAGS := $(LDFLAGS) -Wl,-Ttext=0x7800000
-
-$(NETOBJS): EXTRA_CFLAGS += $(LIBC_INC) $(LIBNET_INC)
-
-s390-netboot.elf: $(NETOBJS) libnet.a libc.a
- $(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $^,Linking)
-
-s390-netboot.img: s390-netboot.elf
- $(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,Stripping $< into)
-
# libc files:
LIBC_CFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) \
@@ -361,6 +361,8 @@ typedef struct CcwSearchIdData {
uint8_t record;
} __attribute__((packed)) CcwSearchIdData;
+extern SubChannelId net_schid;
+
int enable_mss_facility(void);
void enable_subchannel(SubChannelId schid);
uint16_t cu_type(SubChannelId schid);
@@ -87,9 +87,9 @@ extern IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE)));
struct QemuIplParameters {
uint8_t qipl_flags;
uint8_t reserved1[3];
- uint64_t netboot_start_addr;
+ uint64_t reserved2;
uint32_t boot_menu_timeout;
- uint8_t reserved2[12];
+ uint8_t reserved3[12];
} __attribute__ ((packed));
typedef struct QemuIplParameters QemuIplParameters;
@@ -54,6 +54,9 @@ void write_iplb_location(void);
unsigned int get_loadparm_index(void);
void main(void);
+/* netmain.c */
+void netmain(void);
+
/* sclp.c */
void sclp_print(const char *string);
void sclp_set_write_mask(uint32_t receive_mask, uint32_t send_mask);
@@ -253,7 +253,6 @@ struct VDev {
uint8_t scsi_dev_heads;
bool scsi_device_selected;
ScsiDevice selected_scsi_device;
- uint64_t netboot_start_addr;
uint32_t max_transfer;
uint32_t guest_features[2];
};
@@ -928,7 +928,7 @@ void zipl_load(void)
}
if (virtio_get_device_type() == VIRTIO_ID_NET) {
- jump_to_IPL_code(vdev->netboot_start_addr);
+ netmain();
}
ipl_scsi();
@@ -37,8 +37,13 @@ LowCore *lowcore; /* Yes, this *is* a pointer to address 0 */
*/
void write_subsystem_identification(void)
{
- lowcore->subchannel_id = blk_schid.sch_id;
- lowcore->subchannel_nr = blk_schid.sch_no;
+ if (cutype == CU_TYPE_VIRTIO && virtio_get_device_type() == VIRTIO_ID_NET) {
+ lowcore->subchannel_id = net_schid.sch_id;
+ lowcore->subchannel_nr = net_schid.sch_no;
+ } else {
+ lowcore->subchannel_id = blk_schid.sch_id;
+ lowcore->subchannel_nr = blk_schid.sch_no;
+ }
lowcore->io_int_parm = 0;
}
@@ -230,7 +235,6 @@ static int virtio_setup(void)
switch (vdev->senseid.cu_model) {
case VIRTIO_ID_NET:
sclp_print("Network boot device detected\n");
- vdev->netboot_start_addr = qipl.netboot_start_addr;
return 0;
case VIRTIO_ID_BLOCK:
ret = virtio_blk_setup_device(blk_schid);
@@ -41,7 +41,6 @@
#define DEFAULT_TFTP_RETRIES 20
extern char _start[];
-void write_iplb_location(void) {}
#define KERNEL_ADDR ((void *)0L)
#define KERNEL_MAX_SIZE ((long)_start)
@@ -50,10 +49,9 @@ void write_iplb_location(void) {}
/* STSI 3.2.2 offset of first vmdb + offset of uuid inside vmdb */
#define STSI322_VMDB_UUID_OFFSET ((8 + 12) * 4)
-IplParameterBlock iplb __attribute__((aligned(PAGE_SIZE)));
static char cfgbuf[2048];
-static SubChannelId net_schid = { .one = 1 };
+SubChannelId net_schid = { .one = 1 };
static uint8_t mac[6];
static uint64_t dest_timer;
@@ -438,15 +436,6 @@ static int net_try_direct_tftp_load(filename_ip_t *fn_ip)
return rc;
}
-void write_subsystem_identification(void)
-{
- SubChannelId *schid = (SubChannelId *) 184;
- uint32_t *zeroes = (uint32_t *) 188;
-
- *schid = net_schid;
- *zeroes = 0;
-}
-
static bool find_net_dev(Schib *schib, int dev_no)
{
int i, r;
@@ -509,7 +498,7 @@ static void virtio_setup(void)
IPL_assert(found, "No virtio net device found");
}
-void main(void)
+void netmain(void)
{
filename_ip_t fn_ip;
int rc, fnlen;
@@ -32,19 +32,20 @@ QEMU_DGFLAGS = -MMD -MP -MT $@ -MF $(@D)/$(*F).d
.PHONY : all clean build-all distclean
-OBJECTS = start.o main.o bootmap.o jump2ipl.o sclp.o menu.o \
- virtio.o virtio-scsi.o virtio-blkdev.o cio.o dasd-ipl.o
+OBJECTS = start.o main.o bootmap.o jump2ipl.o sclp.o menu.o netmain.o \
+ virtio.o virtio-net.o virtio-scsi.o virtio-blkdev.o cio.o dasd-ipl.o
SLOF_DIR := $(SRC_PATH)/../../roms/SLOF
LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include
+LIBNET_INC := -I$(SLOF_DIR)/lib/libnet
EXTRA_CFLAGS += -Wall
EXTRA_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -fno-common -fPIE
EXTRA_CFLAGS += -fwrapv -fno-strict-aliasing -fno-asynchronous-unwind-tables
EXTRA_CFLAGS += -msoft-float
EXTRA_CFLAGS += -std=gnu99
-EXTRA_CFLAGS += $(LIBC_INC)
+EXTRA_CFLAGS += $(LIBC_INC) $(LIBNET_INC)
LDFLAGS += -Wl,-pie -nostdlib -z noexecstack
cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>/dev/null
@@ -62,9 +63,9 @@ config-cc.mak: Makefile
include $(SRC_PATH)/netboot.mak
-build-all: s390-ccw.img s390-netboot.img
+build-all: s390-ccw.img
-s390-ccw.elf: $(OBJECTS) libc.a
+s390-ccw.elf: $(OBJECTS) libnet.a libc.a
$(call quiet-command,$(CC) $(LDFLAGS) -o $@ $^,Linking)
s390-ccw.img: s390-ccw.elf
@@ -72,7 +73,7 @@ s390-ccw.img: s390-ccw.elf
$(OBJECTS): Makefile
-ALL_OBJS = $(sort $(OBJECTS) $(NETOBJS) $(LIBCOBJS) $(LIBNETOBJS))
+ALL_OBJS = $(sort $(OBJECTS) $(LIBCOBJS) $(LIBNETOBJS))
-include $(ALL_OBJS:%.o=%.d)
clean:
We originally built a separate binary for the netboot code since it was considered as experimental and we could not be sure that the necessary SLOF module had been checked out. Time passed, the code proved its usefulness, and the build system nowadays makes sure that the SLOF module is checked out if you have a s390x compiler available for building the s390-ccw bios. So there is no real compelling reason anymore to keep the netboot code in a separate binary. Linking the code together with the main s390-ccw.img will make future enhancements much easier, like supporting more than one boot device. Signed-off-by: Thomas Huth <thuth@redhat.com> --- pc-bios/s390-ccw/netboot.mak | 14 -------------- pc-bios/s390-ccw/cio.h | 2 ++ pc-bios/s390-ccw/iplb.h | 4 ++-- pc-bios/s390-ccw/s390-ccw.h | 3 +++ pc-bios/s390-ccw/virtio.h | 1 - pc-bios/s390-ccw/bootmap.c | 2 +- pc-bios/s390-ccw/main.c | 10 +++++++--- pc-bios/s390-ccw/netmain.c | 15 ++------------- pc-bios/s390-ccw/Makefile | 13 +++++++------ 9 files changed, 24 insertions(+), 40 deletions(-)