diff options
Diffstat (limited to 'pc-bios/s390-ccw/main.c')
| -rw-r--r-- | pc-bios/s390-ccw/main.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index e41b264a6f..32ed70ebdd 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -18,6 +18,9 @@ IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); static char loadparm[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; QemuIplParameters qipl; +#define LOADPARM_PROMPT "PROMPT " +#define LOADPARM_EMPTY "........" + /* * Priniciples of Operations (SA22-7832-09) chapter 17 requires that * a subsystem-identification is at 184-187 and bytes 188-191 are zero @@ -74,6 +77,26 @@ static bool find_dev(Schib *schib, int dev_no) return false; } +static void menu_setup(void) +{ + if (memcmp(loadparm, LOADPARM_PROMPT, 8) == 0) { + menu_set_parms(QIPL_FLAG_BM_OPTS_CMD, 0); + return; + } + + /* If loadparm was set to any other value, then do not enable menu */ + if (memcmp(loadparm, LOADPARM_EMPTY, 8) != 0) { + return; + } + + switch (iplb.pbt) { + case S390_IPL_TYPE_CCW: + menu_set_parms(qipl.qipl_flags & QIPL_FLAG_BM_OPTS_CMD, + qipl.boot_menu_timeout); + return; + } +} + static void virtio_setup(void) { Schib schib; @@ -117,6 +140,7 @@ static void virtio_setup(void) default: panic("List-directed IPL not supported yet!\n"); } + menu_setup(); } else { for (ssid = 0; ssid < 0x3; ssid++) { blk_schid.ssid = ssid; |