diff options
| -rw-r--r-- | src/parisc/parisc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/parisc/parisc.c b/src/parisc/parisc.c index 64fda0f..fe8ff36 100644 --- a/src/parisc/parisc.c +++ b/src/parisc/parisc.c @@ -203,6 +203,9 @@ static unsigned int chassis_code = 0; int powersw_nop; int *powersw_ptr; +/* allow 64-bit OS installation on 64-bit firmware */ +int enable_OS64 = 1; + /* * Real time clock emulation * Either LASI or Astro will provide access to an emulated RTC clock. @@ -1556,8 +1559,8 @@ static int pdc_model(unsigned long *arg) /* unlock pdc call if running wide. */ firmware_width_locked = !(psw_defaults & PDC_PSW_WIDE_BIT); result[0] = current_machine->pdc_caps; - result[0] |= PDC_MODEL_OS32; /* we only support 32-bit PDC for now. */ - if (is_64bit_PDC()) /* and maybe 64-bit */ + result[0] |= PDC_MODEL_OS32; /* we always support 32-bit PDC */ + if (is_64bit_PDC() && enable_OS64) /* and maybe 64-bit */ result[0] |= PDC_MODEL_OS64; /* this means 64-bit PDC calls are supported */ else result[0] &= ~PDC_MODEL_OS64; @@ -3114,6 +3117,9 @@ void __VISIBLE start_parisc_firmware(void) powersw_ptr = NULL; } + /* possibility to disable 64-bit OS installation: "-fw_cfg opt/OS64,string=0" */ + enable_OS64 = romfile_loadstring_to_int("opt/OS64", enable_OS64); + /* real-time-clock addr */ rtc_ptr = (int *) F_EXTEND(romfile_loadint("/etc/hppa/rtc-addr", (int) LASI_RTC_HPA)); // dprintf(0, "RTC PTR 0x%p\n", rtc_ptr); |