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-rw-r--r--pc-bios/s390-ccw.imgbin50936 -> 42608 bytes
-rw-r--r--pc-bios/s390-ccw/bootmap.c27
-rw-r--r--pc-bios/s390-ccw/main.c27
-rw-r--r--pc-bios/s390-ccw/netboot.mak7
-rw-r--r--pc-bios/s390-ccw/s390-ccw.h1
-rw-r--r--pc-bios/s390-ccw/virtio-blkdev.c91
-rw-r--r--pc-bios/s390-ccw/virtio-scsi.c19
-rw-r--r--pc-bios/s390-ccw/virtio-scsi.h2
-rw-r--r--pc-bios/s390-ccw/virtio.c28
-rw-r--r--pc-bios/s390-ccw/virtio.h16
-rw-r--r--pc-bios/s390-netboot.imgbin79688 -> 67232 bytes
11 files changed, 105 insertions, 113 deletions
diff --git a/pc-bios/s390-ccw.img b/pc-bios/s390-ccw.img
index a560c1272f..39f9680a0e 100644
--- a/pc-bios/s390-ccw.img
+++ b/pc-bios/s390-ccw.img
Binary files differ
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 56411ab3b6..994e59c0b0 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -780,18 +780,37 @@ static void ipl_iso_el_torito(void)
}
}
+/**
+ * Detect whether we're trying to boot from an .ISO image.
+ * These always have a signature string "CD001" at offset 0x8001.
+ */
+static bool has_iso_signature(void)
+{
+ int blksize = virtio_get_block_size();
+
+ if (!blksize || virtio_read(0x8000 / blksize, sec)) {
+ return false;
+ }
+
+ return !memcmp("CD001", &sec[1], 5);
+}
+
/***********************************************************************
* Bus specific IPL sequences
*/
static void zipl_load_vblk(void)
{
- if (virtio_guessed_disk_nature()) {
- virtio_assume_iso9660();
+ int blksize = virtio_get_block_size();
+
+ if (blksize == VIRTIO_ISO_BLOCK_SIZE || has_iso_signature()) {
+ if (blksize != VIRTIO_ISO_BLOCK_SIZE) {
+ virtio_assume_iso9660();
+ }
+ ipl_iso_el_torito();
}
- ipl_iso_el_torito();
- if (virtio_guessed_disk_nature()) {
+ if (blksize != VIRTIO_DASD_DEFAULT_BLOCK_SIZE) {
sclp_print("Using guessed DASD geometry.\n");
virtio_assume_eckd();
}
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
index 5d2b7ba94d..a2def83e82 100644
--- a/pc-bios/s390-ccw/main.c
+++ b/pc-bios/s390-ccw/main.c
@@ -14,6 +14,7 @@
#include "s390-ccw.h"
#include "cio.h"
#include "virtio.h"
+#include "virtio-scsi.h"
#include "dasd-ipl.h"
char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
@@ -218,6 +219,7 @@ static int virtio_setup(void)
{
VDev *vdev = virtio_get_device();
QemuIplParameters *early_qipl = (QemuIplParameters *)QIPL_ADDRESS;
+ int ret;
memcpy(&qipl, early_qipl, sizeof(QemuIplParameters));
@@ -225,18 +227,26 @@ static int virtio_setup(void)
menu_setup();
}
- if (virtio_get_device_type() == VIRTIO_ID_NET) {
+ switch (vdev->senseid.cu_model) {
+ case VIRTIO_ID_NET:
sclp_print("Network boot device detected\n");
vdev->netboot_start_addr = qipl.netboot_start_addr;
- } else {
- int ret = virtio_blk_setup_device(blk_schid);
- if (ret) {
- return ret;
- }
+ return 0;
+ case VIRTIO_ID_BLOCK:
+ ret = virtio_blk_setup_device(blk_schid);
+ break;
+ case VIRTIO_ID_SCSI:
+ ret = virtio_scsi_setup_device(blk_schid);
+ break;
+ default:
+ panic("\n! No IPL device available !\n");
+ }
+
+ if (!ret) {
IPL_assert(virtio_ipl_disk_is_valid(), "No valid IPL device detected");
}
- return 0;
+ return ret;
}
static void ipl_boot_device(void)
@@ -281,7 +291,7 @@ static void probe_boot_device(void)
sclp_print("Could not find a suitable boot device (none specified)\n");
}
-int main(void)
+void main(void)
{
sclp_setup();
css_setup();
@@ -294,5 +304,4 @@ int main(void)
}
panic("Failed to load OS from hard disk\n");
- return 0; /* make compiler happy */
}
diff --git a/pc-bios/s390-ccw/netboot.mak b/pc-bios/s390-ccw/netboot.mak
index ee59a5f4de..7639da194c 100644
--- a/pc-bios/s390-ccw/netboot.mak
+++ b/pc-bios/s390-ccw/netboot.mak
@@ -16,9 +16,12 @@ s390-netboot.elf: $(NETOBJS) libnet.a libc.a
s390-netboot.img: s390-netboot.elf
$(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,"STRIP","$(TARGET_DIR)$@")
+# SLOF is GCC-only, so ignore warnings about GNU extensions with Clang here
+NO_GNU_WARN := $(call cc-option,-Werror $(QEMU_CFLAGS),-Wno-gnu)
+
# libc files:
-LIBC_CFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) \
+LIBC_CFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
-MMD -MP -MT $@ -MF $(@:%.o=%.d)
CTYPE_OBJS = isdigit.o isxdigit.o toupper.o
@@ -52,7 +55,7 @@ libc.a: $(LIBCOBJS)
LIBNETOBJS := args.o dhcp.o dns.o icmpv6.o ipv6.o tcp.o udp.o bootp.o \
dhcpv6.o ethernet.o ipv4.o ndp.o tftp.o pxelinux.o
-LIBNETCFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(LIBC_INC) $(LIBNET_INC) \
+LIBNETCFLAGS = $(EXTRA_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
-DDHCPARCH=0x1F -MMD -MP -MT $@ -MF $(@:%.o=%.d)
%.o : $(SLOF_DIR)/lib/libnet/%.c
diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
index 79db69ff54..b88e0550ab 100644
--- a/pc-bios/s390-ccw/s390-ccw.h
+++ b/pc-bios/s390-ccw/s390-ccw.h
@@ -57,6 +57,7 @@ void write_subsystem_identification(void);
void write_iplb_location(void);
extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
unsigned int get_loadparm_index(void);
+void main(void);
/* sclp.c */
void sclp_print(const char *string);
diff --git a/pc-bios/s390-ccw/virtio-blkdev.c b/pc-bios/s390-ccw/virtio-blkdev.c
index 7d35050292..8271c47296 100644
--- a/pc-bios/s390-ccw/virtio-blkdev.c
+++ b/pc-bios/s390-ccw/virtio-blkdev.c
@@ -13,6 +13,9 @@
#include "virtio.h"
#include "virtio-scsi.h"
+#define VIRTIO_BLK_F_GEOMETRY (1 << 4)
+#define VIRTIO_BLK_F_BLK_SIZE (1 << 6)
+
static int virtio_blk_read_many(VDev *vdev, ulong sector, void *load_addr,
int sec_num)
{
@@ -112,23 +115,6 @@ VirtioGDN virtio_guessed_disk_nature(void)
return virtio_get_device()->guessed_disk_nature;
}
-void virtio_assume_scsi(void)
-{
- VDev *vdev = virtio_get_device();
-
- switch (vdev->senseid.cu_model) {
- case VIRTIO_ID_BLOCK:
- vdev->guessed_disk_nature = VIRTIO_GDN_SCSI;
- vdev->config.blk.blk_size = VIRTIO_SCSI_BLOCK_SIZE;
- vdev->config.blk.physical_block_exp = 0;
- vdev->blk_factor = 1;
- break;
- case VIRTIO_ID_SCSI:
- vdev->scsi_block_size = VIRTIO_SCSI_BLOCK_SIZE;
- break;
- }
-}
-
void virtio_assume_iso9660(void)
{
VDev *vdev = virtio_get_device();
@@ -155,7 +141,7 @@ void virtio_assume_eckd(void)
vdev->config.blk.physical_block_exp = 0;
switch (vdev->senseid.cu_model) {
case VIRTIO_ID_BLOCK:
- vdev->config.blk.blk_size = 4096;
+ vdev->config.blk.blk_size = VIRTIO_DASD_DEFAULT_BLOCK_SIZE;
break;
case VIRTIO_ID_SCSI:
vdev->config.blk.blk_size = vdev->scsi_block_size;
@@ -166,46 +152,19 @@ void virtio_assume_eckd(void)
virtio_eckd_sectors_for_block_size(vdev->config.blk.blk_size);
}
-bool virtio_disk_is_scsi(void)
-{
- VDev *vdev = virtio_get_device();
-
- if (vdev->guessed_disk_nature == VIRTIO_GDN_SCSI) {
- return true;
- }
- switch (vdev->senseid.cu_model) {
- case VIRTIO_ID_BLOCK:
- return (vdev->config.blk.geometry.heads == 255)
- && (vdev->config.blk.geometry.sectors == 63)
- && (virtio_get_block_size() == VIRTIO_SCSI_BLOCK_SIZE);
- case VIRTIO_ID_SCSI:
- return true;
- }
- return false;
-}
-
-bool virtio_disk_is_eckd(void)
+bool virtio_ipl_disk_is_valid(void)
{
+ int blksize = virtio_get_block_size();
VDev *vdev = virtio_get_device();
- const int block_size = virtio_get_block_size();
- if (vdev->guessed_disk_nature == VIRTIO_GDN_DASD) {
+ if (vdev->guessed_disk_nature == VIRTIO_GDN_SCSI ||
+ vdev->guessed_disk_nature == VIRTIO_GDN_DASD) {
return true;
}
- switch (vdev->senseid.cu_model) {
- case VIRTIO_ID_BLOCK:
- return (vdev->config.blk.geometry.heads == 15)
- && (vdev->config.blk.geometry.sectors ==
- virtio_eckd_sectors_for_block_size(block_size));
- case VIRTIO_ID_SCSI:
- return false;
- }
- return false;
-}
-bool virtio_ipl_disk_is_valid(void)
-{
- return virtio_disk_is_scsi() || virtio_disk_is_eckd();
+ return (vdev->senseid.cu_model == VIRTIO_ID_BLOCK ||
+ vdev->senseid.cu_model == VIRTIO_ID_SCSI) &&
+ blksize >= 512 && blksize <= 4096;
}
int virtio_get_block_size(void)
@@ -266,34 +225,12 @@ uint64_t virtio_get_blocks(void)
int virtio_blk_setup_device(SubChannelId schid)
{
VDev *vdev = virtio_get_device();
- int ret = 0;
+ vdev->guest_features[0] = VIRTIO_BLK_F_GEOMETRY | VIRTIO_BLK_F_BLK_SIZE;
vdev->schid = schid;
virtio_setup_ccw(vdev);
- switch (vdev->senseid.cu_model) {
- case VIRTIO_ID_BLOCK:
- sclp_print("Using virtio-blk.\n");
- if (!virtio_ipl_disk_is_valid()) {
- /* make sure all getters but blocksize return 0 for
- * invalid IPL disk
- */
- memset(&vdev->config.blk, 0, sizeof(vdev->config.blk));
- virtio_assume_scsi();
- }
- break;
- case VIRTIO_ID_SCSI:
- IPL_assert(vdev->config.scsi.sense_size == VIRTIO_SCSI_SENSE_SIZE,
- "Config: sense size mismatch");
- IPL_assert(vdev->config.scsi.cdb_size == VIRTIO_SCSI_CDB_SIZE,
- "Config: CDB size mismatch");
-
- sclp_print("Using virtio-scsi.\n");
- ret = virtio_scsi_setup(vdev);
- break;
- default:
- panic("\n! No IPL device available !\n");
- }
+ sclp_print("Using virtio-blk.\n");
- return ret;
+ return 0;
}
diff --git a/pc-bios/s390-ccw/virtio-scsi.c b/pc-bios/s390-ccw/virtio-scsi.c
index 2c8d0f3097..3b7069270c 100644
--- a/pc-bios/s390-ccw/virtio-scsi.c
+++ b/pc-bios/s390-ccw/virtio-scsi.c
@@ -329,7 +329,7 @@ static void scsi_parse_capacity_report(void *data,
}
}
-int virtio_scsi_setup(VDev *vdev)
+static int virtio_scsi_setup(VDev *vdev)
{
int retry_test_unit_ready = 3;
uint8_t data[256];
@@ -430,3 +430,20 @@ int virtio_scsi_setup(VDev *vdev)
return 0;
}
+
+int virtio_scsi_setup_device(SubChannelId schid)
+{
+ VDev *vdev = virtio_get_device();
+
+ vdev->schid = schid;
+ virtio_setup_ccw(vdev);
+
+ IPL_assert(vdev->config.scsi.sense_size == VIRTIO_SCSI_SENSE_SIZE,
+ "Config: sense size mismatch");
+ IPL_assert(vdev->config.scsi.cdb_size == VIRTIO_SCSI_CDB_SIZE,
+ "Config: CDB size mismatch");
+
+ sclp_print("Using virtio-scsi.\n");
+
+ return virtio_scsi_setup(vdev);
+}
diff --git a/pc-bios/s390-ccw/virtio-scsi.h b/pc-bios/s390-ccw/virtio-scsi.h
index 4b14c2c2f9..e6b6cd4815 100644
--- a/pc-bios/s390-ccw/virtio-scsi.h
+++ b/pc-bios/s390-ccw/virtio-scsi.h
@@ -67,8 +67,8 @@ static inline bool virtio_scsi_response_ok(const VirtioScsiCmdResp *r)
return r->response == VIRTIO_SCSI_S_OK && r->status == CDB_STATUS_GOOD;
}
-int virtio_scsi_setup(VDev *vdev);
int virtio_scsi_read_many(VDev *vdev,
ulong sector, void *load_addr, int sec_num);
+int virtio_scsi_setup_device(SubChannelId schid);
#endif /* VIRTIO_SCSI_H */
diff --git a/pc-bios/s390-ccw/virtio.c b/pc-bios/s390-ccw/virtio.c
index 5d2c6e3381..f37510f312 100644
--- a/pc-bios/s390-ccw/virtio.c
+++ b/pc-bios/s390-ccw/virtio.c
@@ -220,7 +220,7 @@ int virtio_run(VDev *vdev, int vqid, VirtioCmd *cmd)
void virtio_setup_ccw(VDev *vdev)
{
int i, rc, cfg_size = 0;
- unsigned char status = VIRTIO_CONFIG_S_DRIVER_OK;
+ uint8_t status;
struct VirtioFeatureDesc {
uint32_t features;
uint8_t index;
@@ -234,6 +234,10 @@ void virtio_setup_ccw(VDev *vdev)
run_ccw(vdev, CCW_CMD_VDEV_RESET, NULL, 0, false);
+ status = VIRTIO_CONFIG_S_ACKNOWLEDGE;
+ rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
+ IPL_assert(rc == 0, "Could not write ACKNOWLEDGE status to host");
+
switch (vdev->senseid.cu_model) {
case VIRTIO_ID_NET:
vdev->nr_vqs = 2;
@@ -253,9 +257,10 @@ void virtio_setup_ccw(VDev *vdev)
default:
panic("Unsupported virtio device\n");
}
- IPL_assert(
- run_ccw(vdev, CCW_CMD_READ_CONF, &vdev->config, cfg_size, false) == 0,
- "Could not get block device configuration");
+
+ status |= VIRTIO_CONFIG_S_DRIVER;
+ rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
+ IPL_assert(rc == 0, "Could not write DRIVER status to host");
/* Feature negotiation */
for (i = 0; i < ARRAY_SIZE(vdev->guest_features); i++) {
@@ -269,6 +274,9 @@ void virtio_setup_ccw(VDev *vdev)
IPL_assert(rc == 0, "Could not set features bits");
}
+ rc = run_ccw(vdev, CCW_CMD_READ_CONF, &vdev->config, cfg_size, false);
+ IPL_assert(rc == 0, "Could not get virtio device configuration");
+
for (i = 0; i < vdev->nr_vqs; i++) {
VqInfo info = {
.queue = (unsigned long long) ring_area + (i * VIRTIO_RING_SIZE),
@@ -281,9 +289,8 @@ void virtio_setup_ccw(VDev *vdev)
.num = 0,
};
- IPL_assert(
- run_ccw(vdev, CCW_CMD_READ_VQ_CONF, &config, sizeof(config), false) == 0,
- "Could not get block device VQ configuration");
+ rc = run_ccw(vdev, CCW_CMD_READ_VQ_CONF, &config, sizeof(config), false);
+ IPL_assert(rc == 0, "Could not get virtio device VQ configuration");
info.num = config.num;
vring_init(&vdev->vrings[i], &info);
vdev->vrings[i].schid = vdev->schid;
@@ -291,9 +298,10 @@ void virtio_setup_ccw(VDev *vdev)
run_ccw(vdev, CCW_CMD_SET_VQ, &info, sizeof(info), false) == 0,
"Cannot set VQ info");
}
- IPL_assert(
- run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false) == 0,
- "Could not write status to host");
+
+ status |= VIRTIO_CONFIG_S_DRIVER_OK;
+ rc = run_ccw(vdev, CCW_CMD_WRITE_STATUS, &status, sizeof(status), false);
+ IPL_assert(rc == 0, "Could not write DRIVER_OK status to host");
}
bool virtio_is_supported(SubChannelId schid)
diff --git a/pc-bios/s390-ccw/virtio.h b/pc-bios/s390-ccw/virtio.h
index 19fceb6495..e657d381ec 100644
--- a/pc-bios/s390-ccw/virtio.h
+++ b/pc-bios/s390-ccw/virtio.h
@@ -182,22 +182,20 @@ enum guessed_disk_nature_type {
typedef enum guessed_disk_nature_type VirtioGDN;
VirtioGDN virtio_guessed_disk_nature(void);
-void virtio_assume_scsi(void);
void virtio_assume_eckd(void);
void virtio_assume_iso9660(void);
-extern bool virtio_disk_is_scsi(void);
-extern bool virtio_disk_is_eckd(void);
-extern bool virtio_ipl_disk_is_valid(void);
-extern int virtio_get_block_size(void);
-extern uint8_t virtio_get_heads(void);
-extern uint8_t virtio_get_sectors(void);
-extern uint64_t virtio_get_blocks(void);
-extern int virtio_read_many(ulong sector, void *load_addr, int sec_num);
+bool virtio_ipl_disk_is_valid(void);
+int virtio_get_block_size(void);
+uint8_t virtio_get_heads(void);
+uint8_t virtio_get_sectors(void);
+uint64_t virtio_get_blocks(void);
+int virtio_read_many(ulong sector, void *load_addr, int sec_num);
#define VIRTIO_SECTOR_SIZE 512
#define VIRTIO_ISO_BLOCK_SIZE 2048
#define VIRTIO_SCSI_BLOCK_SIZE 512
+#define VIRTIO_DASD_DEFAULT_BLOCK_SIZE 4096
static inline ulong virtio_sector_adjust(ulong sector)
{
diff --git a/pc-bios/s390-netboot.img b/pc-bios/s390-netboot.img
index bc34af8a28..682da24a05 100644
--- a/pc-bios/s390-netboot.img
+++ b/pc-bios/s390-netboot.img
Binary files differ
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-21 19:06:18 +0100