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-rw-r--r--pc-bios/s390-ccw/bootmap.c82
-rw-r--r--pc-bios/s390-ccw/main.c13
-rw-r--r--pc-bios/s390-ccw/s390-ccw.h2
3 files changed, 31 insertions, 66 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index bb8dd69a35..1866a20893 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -86,7 +86,7 @@ static int zipl_magic(uint8_t *ptr)
return 1;
}
-static int zipl_load_segment(ComponentEntry *entry)
+static void zipl_load_segment(ComponentEntry *entry)
{
const int max_entries = (MAX_SECTOR_SIZE / sizeof(ScsiBlockPtr));
ScsiBlockPtr *bprs = (void *)sec;
@@ -103,10 +103,8 @@ static int zipl_load_segment(ComponentEntry *entry)
do {
memset(bprs, FREE_SPACE_FILLER, bprs_size);
- if (virtio_read(blockno, (uint8_t *)bprs)) {
- debug_print_int("failed reading bprs at", blockno);
- goto fail;
- }
+ debug_print_int("reading bprs at", blockno);
+ read_block(blockno, bprs, "zipl_load_segment: cannot read block");
for (i = 0;; i++) {
u64 *cur_desc = (void *)&bprs[i];
@@ -134,21 +132,13 @@ static int zipl_load_segment(ComponentEntry *entry)
}
address = virtio_load_direct(cur_desc[0], cur_desc[1], 0,
(void *)address);
- if (address == -1) {
- goto fail;
- }
+ IPL_assert(address != -1, "zipl_load_segment: wrong IPL address");
}
} while (blockno);
-
- return 0;
-
-fail:
- sclp_print("failed loading segment\n");
- return -1;
}
/* Run a zipl program */
-static int zipl_run(ScsiBlockPtr *pte)
+static void zipl_run(ScsiBlockPtr *pte)
{
ComponentHeader *header;
ComponentEntry *entry;
@@ -157,75 +147,53 @@ static int zipl_run(ScsiBlockPtr *pte)
virtio_read(pte->blockno, tmp_sec);
header = (ComponentHeader *)tmp_sec;
- if (!zipl_magic(tmp_sec)) {
- goto fail;
- }
+ IPL_assert(zipl_magic(tmp_sec), "zipl_run: zipl_magic");
- if (header->type != ZIPL_COMP_HEADER_IPL) {
- goto fail;
- }
+ IPL_assert(header->type == ZIPL_COMP_HEADER_IPL,
+ "zipl_run: wrong header type");
dputs("start loading images\n");
/* Load image(s) into RAM */
entry = (ComponentEntry *)(&header[1]);
while (entry->component_type == ZIPL_COMP_ENTRY_LOAD) {
- if (zipl_load_segment(entry) < 0) {
- goto fail;
- }
+ zipl_load_segment(entry);
entry++;
- if ((uint8_t *)(&entry[1]) > (tmp_sec + MAX_SECTOR_SIZE)) {
- goto fail;
- }
+ IPL_assert((uint8_t *)(&entry[1]) <= (tmp_sec + MAX_SECTOR_SIZE),
+ "zipl_run: wrong entry size");
}
- if (entry->component_type != ZIPL_COMP_ENTRY_EXEC) {
- goto fail;
- }
+ IPL_assert(entry->component_type == ZIPL_COMP_ENTRY_EXEC,
+ "zipl_run: no EXEC entry");
/* should not return */
jump_to_IPL_code(entry->load_address);
-
- return 0;
-
-fail:
- sclp_print("failed running zipl\n");
- return -1;
}
-int zipl_load(void)
+void zipl_load(void)
{
ScsiMbr *mbr = (void *)sec;
uint8_t *ns, *ns_end;
int program_table_entries = 0;
const int pte_len = sizeof(ScsiBlockPtr);
ScsiBlockPtr *prog_table_entry;
- const char *error = "";
/* Grab the MBR */
- virtio_read(0, (void *)mbr);
+ read_block(0, mbr, "zipl_load: cannot read block 0");
dputs("checking magic\n");
- if (!zipl_magic(mbr->magic)) {
- error = "zipl_magic 1";
- goto fail;
- }
+ IPL_assert(zipl_magic(mbr->magic), "zipl_load: zipl_magic 1");
debug_print_int("program table", mbr->blockptr.blockno);
/* Parse the program table */
- if (virtio_read(mbr->blockptr.blockno, sec)) {
- error = "virtio_read";
- goto fail;
- }
+ read_block(mbr->blockptr.blockno, sec,
+ "zipl_load: cannot read program table");
- if (!zipl_magic(sec)) {
- error = "zipl_magic 2";
- goto fail;
- }
+ IPL_assert(zipl_magic(sec), "zipl_load: zipl_magic 2");
ns_end = sec + virtio_get_block_size();
for (ns = (sec + pte_len); (ns + pte_len) < ns_end; ns++) {
@@ -239,19 +207,11 @@ int zipl_load(void)
debug_print_int("program table entries", program_table_entries);
- if (!program_table_entries) {
- goto fail;
- }
+ IPL_assert(program_table_entries, "zipl_load: no program table");
/* Run the default entry */
prog_table_entry = (ScsiBlockPtr *)(sec + pte_len);
- return zipl_run(prog_table_entry);
-
-fail:
- sclp_print("failed loading zipl: ");
- sclp_print(error);
- sclp_print("\n");
- return -1;
+ zipl_run(prog_table_entry); /* no return */
}
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c
index 5c33766533..dbfb40e685 100644
--- a/pc-bios/s390-ccw/main.c
+++ b/pc-bios/s390-ccw/main.c
@@ -9,6 +9,7 @@
*/
#include "s390-ccw.h"
+#include "virtio.h"
char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
uint64_t boot_value;
@@ -64,6 +65,10 @@ static void virtio_setup(uint64_t dev_info)
}
virtio_setup_block(blk_schid);
+
+ if (!virtio_ipl_disk_is_valid()) {
+ virtio_panic("No valid hard disk detected.\n");
+ }
}
int main(void)
@@ -72,8 +77,8 @@ int main(void)
debug_print_int("boot reg[7] ", boot_value);
virtio_setup(boot_value);
- if (zipl_load() < 0)
- sclp_print("Failed to load OS from hard disk\n");
- disabled_wait();
- while (1) { }
+ zipl_load(); /* no return */
+
+ virtio_panic("Failed to load OS from hard disk\n");
+ return 0; /* make compiler happy */
}
diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h
index b6c0a5bcde..29468fb1af 100644
--- a/pc-bios/s390-ccw/s390-ccw.h
+++ b/pc-bios/s390-ccw/s390-ccw.h
@@ -64,7 +64,7 @@ int virtio_read(ulong sector, void *load_addr);
int enable_mss_facility(void);
/* bootmap.c */
-int zipl_load(void);
+void zipl_load(void);
static inline void *memset(void *s, int c, size_t n)
{
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-28 09:11:31 +0000