[OpenBIOS] [PATCH 2/2] tcx.fs: add support for hardware acceleration

[Mark Cave-Ayland]

This is a tidied version of the patch originally posted to the mailing list by
Olivier DANET <odanet at caramail.com>.

- Change a few addresses to match actual hardware

- Remove the "address" property from TCX, because of some almost-bug in NetBSD
  when detecting framebuffers (actual TCX has no address property, so it works
  by chance on real hardware)

- Add the hardware cursor properties

With this and the corresponding QEMU TCX hardware acceleration patch, the
hardware-assisted NetBSD TCX driver will function under QEMU.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>
---
 openbios-devel/drivers/tcx.fs |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/openbios-devel/drivers/tcx.fs b/openbios-devel/drivers/tcx.fs
index d682e35..a377db0 100644
--- a/openbios-devel/drivers/tcx.fs
+++ b/openbios-devel/drivers/tcx.fs
@@ -92,7 +92,7 @@ h# 300000 constant tcx-off-thc-8
 h# 1000 constant /tcx-off-thc-24
 h# 81c constant /tcx-off-thc-8
 
-h# 700000 constant tcx-off-tec
+h# 701000 constant tcx-off-tec
 h# 1000 constant /tcx-off-tec
 
 h# 800000 constant tcx-off-dfb8
@@ -103,7 +103,7 @@ h# 400000 constant /tcx-off-dfb24-24
 h# 1 constant /tcx-off-dfb24-8
 
 h# 4000000 constant tcx-off-stip
-h# 400000 constant /tcx-off-stip-24
+h# 800000 constant /tcx-off-stip-24
 h# 1 constant /tcx-off-stip-8
 
 h# 6000000 constant tcx-off-blit
@@ -228,7 +228,11 @@ headerless
     fb-addr to frame-buffer-adr
     default-font set-font
 
-    frame-buffer-adr encode-int " address" property
+    \ Sun TCX adapters don't have an address property, but it is useful for
+    \ OpenBIOS developers. Unfortunately NetBSD SPARC32 has a bug that causes
+    \ it to fail initialising TCX if the address property is present; so work
+    \ around this by adding an underscore prefix
+    frame-buffer-adr encode-int " _address" property
 
     openbios-video-width openbios-video-height over char-width / over char-height /
     fb8-install
@@ -266,7 +270,7 @@ headerless
   openbios-video-width encode-int " width" property
   line-bytes encode-int " linebytes" property
 
-  5 encode-int 0 encode-int encode+ " intr" property
+  h# 39 encode-int 0 encode-int encode+ " intr" property
   5 encode-int " interrupts" property
 
   ['] qemu-tcx-driver-install is-install
-- 
1.7.10.4