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added coldstart support for TNT2M64 cards: added RAM width test in script execution. TNT2-M64 now working as good as normal TNT2: lower res modes OK, still needs fix for CRTC memory fetch errors on higher modes.

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8802 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2004-09-02 19:37:45 +00:00
parent 85f38ca104
commit ba0b8a97e0
1 changed files with 15 additions and 1 deletions
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src/add-ons/accelerants/nvidia/engine/nv_info.c
+15 -1
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@@ -716,6 +716,7 @@ static void log_pll(uint32 reg)
static void setup_ram_config(uint8* rom, uint16 ram_tab)
{
uint32 ram_cfg, data;
uint8 cnt;
/* set MRS = 256 */
NV_REG32(NV32_PFB_DEBUG_0) &= 0xffffffef;
@@ -775,7 +776,20 @@ static void setup_ram_config(uint8* rom, uint16 ram_tab)
NV_REG32(NV32_PFB_CONFIG_1) = data;
/* ... followed by b0 = 1(?) */
NV_REG32(NV32_PFB_CONFIG_1) = (data | 0x00000001);
//fixme?: do RAM width test
/* do RAM width test to confirm RAM width set to be correct */
/* write testpattern to first 128 bits of graphics memory... */
data = 0x4e563541;
for (cnt = 0; cnt < 4; cnt++)
((uint32 *)si->framebuffer)[cnt] = data;
/* ... if second 64 bits does not contain the testpattern we are apparantly
* set to 128bits width while we should be set to 64bits width, so correct. */
if (((uint32 *)si->framebuffer)[3] != data)
{
LOG(8,("INFO: ---RAM width tested: width is 64bits, correcting settings\n"));
NV_REG32(NV32_NV4STRAPINFO) &= ~0x00000004;
}
//fixme?: do RAM size test
}