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path: root/pc-bios/s390-ccw/bootmap.c
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Diffstat (limited to 'pc-bios/s390-ccw/bootmap.c')
-rw-r--r--pc-bios/s390-ccw/bootmap.c66
1 files changed, 15 insertions, 51 deletions
diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c
index 753c288..c216030 100644
--- a/pc-bios/s390-ccw/bootmap.c
+++ b/pc-bios/s390-ccw/bootmap.c
@@ -9,6 +9,7 @@
*/
#include "s390-ccw.h"
+#include "bootmap.h"
/* #define DEBUG_FALLBACK */
@@ -20,41 +21,6 @@
do { } while (0)
#endif
-struct scsi_blockptr {
- uint64_t blockno;
- uint16_t size;
- uint16_t blockct;
- uint8_t reserved[4];
-} __attribute__ ((packed));
-
-struct component_entry {
- struct scsi_blockptr data;
- uint8_t pad[7];
- uint8_t component_type;
- uint64_t load_address;
-} __attribute((packed));
-
-struct component_header {
- uint8_t magic[4];
- uint8_t type;
- uint8_t reserved[27];
-} __attribute((packed));
-
-struct mbr {
- uint8_t magic[4];
- uint32_t version_id;
- uint8_t reserved[8];
- struct scsi_blockptr blockptr;
-} __attribute__ ((packed));
-
-#define ZIPL_MAGIC "zIPL"
-
-#define ZIPL_COMP_HEADER_IPL 0x00
-#define ZIPL_COMP_HEADER_DUMP 0x01
-
-#define ZIPL_COMP_ENTRY_LOAD 0x02
-#define ZIPL_COMP_ENTRY_EXEC 0x01
-
/* Scratch space */
static uint8_t sec[SECTOR_SIZE] __attribute__((__aligned__(SECTOR_SIZE)));
@@ -118,8 +84,6 @@ static int zipl_magic(uint8_t *ptr)
return 1;
}
-#define FREE_SPACE_FILLER '\xAA'
-
static inline bool unused_space(const void *p, unsigned int size)
{
int i;
@@ -133,10 +97,10 @@ static inline bool unused_space(const void *p, unsigned int size)
return true;
}
-static int zipl_load_segment(struct component_entry *entry)
+static int zipl_load_segment(ComponentEntry *entry)
{
- const int max_entries = (SECTOR_SIZE / sizeof(struct scsi_blockptr));
- struct scsi_blockptr *bprs = (void *)sec;
+ const int max_entries = (SECTOR_SIZE / sizeof(ScsiBlockPtr));
+ ScsiBlockPtr *bprs = (void *)sec;
const int bprs_size = sizeof(sec);
uint64_t blockno;
long address;
@@ -170,7 +134,7 @@ static int zipl_load_segment(struct component_entry *entry)
}
if (bprs[i].blockct == 0 && unused_space(&bprs[i + 1],
- sizeof(struct scsi_blockptr))) {
+ sizeof(ScsiBlockPtr))) {
/* This is a "continue" pointer.
* This ptr is the last one in the current script section.
* I.e. the next ptr must point to the unused memory area.
@@ -195,14 +159,14 @@ fail:
}
/* Run a zipl program */
-static int zipl_run(struct scsi_blockptr *pte)
+static int zipl_run(ScsiBlockPtr *pte)
{
- struct component_header *header;
- struct component_entry *entry;
+ ComponentHeader *header;
+ ComponentEntry *entry;
uint8_t tmp_sec[SECTOR_SIZE];
virtio_read(pte->blockno, tmp_sec);
- header = (struct component_header *)tmp_sec;
+ header = (ComponentHeader *)tmp_sec;
if (!zipl_magic(tmp_sec)) {
goto fail;
@@ -215,7 +179,7 @@ static int zipl_run(struct scsi_blockptr *pte)
dputs("start loading images\n");
/* Load image(s) into RAM */
- entry = (struct component_entry *)(&header[1]);
+ entry = (ComponentEntry *)(&header[1]);
while (entry->component_type == ZIPL_COMP_ENTRY_LOAD) {
if (zipl_load_segment(entry) < 0) {
goto fail;
@@ -244,11 +208,11 @@ fail:
int zipl_load(void)
{
- struct mbr *mbr = (void *)sec;
+ ScsiMbr *mbr = (void *)sec;
uint8_t *ns, *ns_end;
int program_table_entries = 0;
- int pte_len = sizeof(struct scsi_blockptr);
- struct scsi_blockptr *prog_table_entry;
+ const int pte_len = sizeof(ScsiBlockPtr);
+ ScsiBlockPtr *prog_table_entry;
const char *error = "";
/* Grab the MBR */
@@ -276,7 +240,7 @@ int zipl_load(void)
ns_end = sec + SECTOR_SIZE;
for (ns = (sec + pte_len); (ns + pte_len) < ns_end; ns++) {
- prog_table_entry = (struct scsi_blockptr *)ns;
+ prog_table_entry = (ScsiBlockPtr *)ns;
if (!prog_table_entry->blockno) {
break;
}
@@ -292,7 +256,7 @@ int zipl_load(void)
/* Run the default entry */
- prog_table_entry = (struct scsi_blockptr *)(sec + pte_len);
+ prog_table_entry = (ScsiBlockPtr *)(sec + pte_len);
return zipl_run(prog_table_entry);