80 lines
2.0 KiB
Diff
80 lines
2.0 KiB
Diff
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Fri, 8 Mar 2019 11:42:25 +0100
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Subject: vga: add ati bios tables
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Git-commit: f4c6e4c19daf3deac2d7fc3288db5294aba955ad
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Needed to make drivers happy which try to gather
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informations from these tables.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Signed-off-by: Bruce Rogers <brogers@suse.com>
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---
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vgasrc/ati-tables.S | 43 +++++++++++++++++++++++++++++++++++++++++++
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vgasrc/vgaentry.S | 3 +++
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2 files changed, 46 insertions(+)
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diff --git a/roms/seabios/vgasrc/ati-tables.S b/roms/seabios/vgasrc/ati-tables.S
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new file mode 100644
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index 0000000000000000000000000000000000000000..cdbde2fa4aec74f62da898be8b79e4a7c16f6c11
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--- /dev/null
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+++ b/roms/seabios/vgasrc/ati-tables.S
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@@ -0,0 +1,43 @@
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+//
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+// Fake ati bios tables.
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+//
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+// aty128fb and radeonfb try to gather informations from these tables,
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+// so add some stuff here to make the drivers happy. Specifically
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+// radeonfb needs the pll information, otherwise it'll crash with a
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+// division by zero ...
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+//
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+ .org 0x48
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+ .word _ati_main
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+
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+ // main info
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+ .org 0x50
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+_ati_main:
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+ .org 0x50 + 0x30
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+ .word _ati_pll
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+ .org 0x50 + 0x50
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+ .word _ati_connector
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+
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+ // pll info
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+ .org 0x100
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+_ati_pll:
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+ .word 0 // ??? (not used by radeonfb)
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+ .word 0
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+ .word 0
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+ .word 0
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+ .word 23000 // sclk
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+ .word 23000 // mclk
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+ .word 0
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+ .word 2700 // ref_clk
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+ .word 4 // ref_div
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+ .long 12000 // ppll_min
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+ .long 35000 // ppll_max
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+
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+ // connector info
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+ .org 0x140
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+_ati_connector:
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+ .byte 0x10 // one chip
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+ .byte 0x01 // one connector
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+ .word 0x3000 // type DVI-I
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+ .word 0 // end of list
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+
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+ .org 0x200
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diff --git a/roms/seabios/vgasrc/vgaentry.S b/roms/seabios/vgasrc/vgaentry.S
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index 53be2b38ca520c691a4fde927bd8..f9624fce2ed9c570d6283b2905f4 100644
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--- a/roms/seabios/vgasrc/vgaentry.S
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+++ b/roms/seabios/vgasrc/vgaentry.S
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@@ -40,6 +40,9 @@ _rom_header_other2:
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_rom_header_signature:
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.asciz "IBM"
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+#if CONFIG_VGA_ATI
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+#include "ati-tables.S"
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+#endif
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/****************************************************************
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* Entry points
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