diff options
| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-03-08 11:42:25 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-03-15 09:59:25 +0100 |
| commit | f4c6e4c19daf3deac2d7fc3288db5294aba955ad (patch) | |
| tree | 51e48e4a16c1f0145637569e654ff3a967c54169 | |
| parent | 34b6ecc160749a691b80fcb8638216518d971c65 (diff) | |
| download | seabios-f4c6e4c19daf3deac2d7fc3288db5294aba955ad.tar.gz | |
vga: add ati bios tables
Needed to make drivers happy which try to gather
informations from these tables.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
| -rw-r--r-- | vgasrc/ati-tables.S | 43 | ||||
| -rw-r--r-- | vgasrc/vgaentry.S | 3 |
2 files changed, 46 insertions, 0 deletions
diff --git a/vgasrc/ati-tables.S b/vgasrc/ati-tables.S new file mode 100644 index 00000000..cdbde2fa --- /dev/null +++ b/vgasrc/ati-tables.S @@ -0,0 +1,43 @@ +// +// Fake ati bios tables. +// +// aty128fb and radeonfb try to gather informations from these tables, +// so add some stuff here to make the drivers happy. Specifically +// radeonfb needs the pll information, otherwise it'll crash with a +// division by zero ... +// + .org 0x48 + .word _ati_main + + // main info + .org 0x50 +_ati_main: + .org 0x50 + 0x30 + .word _ati_pll + .org 0x50 + 0x50 + .word _ati_connector + + // pll info + .org 0x100 +_ati_pll: + .word 0 // ??? (not used by radeonfb) + .word 0 + .word 0 + .word 0 + .word 23000 // sclk + .word 23000 // mclk + .word 0 + .word 2700 // ref_clk + .word 4 // ref_div + .long 12000 // ppll_min + .long 35000 // ppll_max + + // connector info + .org 0x140 +_ati_connector: + .byte 0x10 // one chip + .byte 0x01 // one connector + .word 0x3000 // type DVI-I + .word 0 // end of list + + .org 0x200 diff --git a/vgasrc/vgaentry.S b/vgasrc/vgaentry.S index 53be2b38..f9624fce 100644 --- a/vgasrc/vgaentry.S +++ b/vgasrc/vgaentry.S @@ -40,6 +40,9 @@ _rom_header_other2: _rom_header_signature: .asciz "IBM" +#if CONFIG_VGA_ATI +#include "ati-tables.S" +#endif /**************************************************************** * Entry points |