diff options
Diffstat (limited to 'pc-bios/s390-ccw/main.c')
| -rw-r--r-- | pc-bios/s390-ccw/main.c | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 0946766..1cacc1b 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -14,6 +14,18 @@ char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE))); static SubChannelId blk_schid = { .one = 1 }; IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); +static char loadparm[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; + +const unsigned char ebc2asc[256] = + /* 0123456789abcdef0123456789abcdef */ + "................................" /* 1F */ + "................................" /* 3F */ + " ...........<(+|&.........!$*);." /* 5F first.chr.here.is.real.space */ + "-/.........,%_>?.........`:#@'=\""/* 7F */ + ".abcdefghi.......jklmnopqr......" /* 9F */ + "..stuvwxyz......................" /* BF */ + ".ABCDEFGHI.......JKLMNOPQR......" /* DF */ + "..STUVWXYZ......0123456789......";/* FF */ /* * Priniciples of Operations (SA22-7832-09) chapter 17 requires that @@ -29,7 +41,6 @@ void write_subsystem_identification(void) *zeroes = 0; } - void panic(const char *string) { sclp_print(string); @@ -37,6 +48,26 @@ void panic(const char *string) while (1) { } } +unsigned int get_loadparm_index(void) +{ + const char *lp = loadparm; + int i; + unsigned int idx = 0; + + for (i = 0; i < 8; i++) { + char c = lp[i]; + + if (c < '0' || c > '9') { + break; + } + + idx *= 10; + idx += c - '0'; + } + + return idx; +} + static bool find_dev(Schib *schib, int dev_no) { int i, r; @@ -73,6 +104,7 @@ static void virtio_setup(void) int ssid; bool found = false; uint16_t dev_no; + char ldp[] = "LOADPARM=[________]\n"; VDev *vdev = virtio_get_device(); /* @@ -82,6 +114,10 @@ static void virtio_setup(void) */ enable_mss_facility(); + sclp_get_loadparm_ascii(loadparm); + memcpy(ldp + 10, loadparm, 8); + sclp_print(ldp); + if (store_iplb(&iplb)) { switch (iplb.pbt) { case S390_IPL_TYPE_CCW: |