diff options
Diffstat (limited to 'i386/i386at/kd.c')
| -rw-r--r-- | i386/i386at/kd.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/i386/i386at/kd.c b/i386/i386at/kd.c index 3c66cc55..f70175cb 100644 --- a/i386/i386at/kd.c +++ b/i386/i386at/kd.c @@ -2498,6 +2498,7 @@ kd_xga_init(void) { csrpos_t xga_getpos(); unsigned char screen; + unsigned char start, stop; outb(CMOS_ADDR, CMOS_EB); screen = inb(CMOS_DATA) & CM_SCRMSK; @@ -2552,6 +2553,24 @@ kd_xga_init(void) printf("kd: unknown screen type, defaulting to EGA\n"); } + outb(kd_index_reg, C_START); + start = inb(kd_io_reg); + /* Make sure cursor is enabled */ + start &= ~0x20; + outb(kd_io_reg, start); + outb(kd_index_reg, C_STOP); + stop = inb(kd_io_reg); + + if (!start && !stop) + { + /* Some firmware seem not to be initializing the cursor size + * any more... Try using standard values. */ + outb(kd_index_reg, C_START); + outb(kd_io_reg, 14); + outb(kd_index_reg, C_STOP); + outb(kd_io_reg, 15); + } + kd_setpos(xga_getpos()); } |