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For Trizeps6 you do not need the BitmapBoot-Tool ( see Boot-Bitmap ( Trizeps VI)).
Creation of a Bootlogo
To create your own bootlogo, create a bitmap with 8Bpp color-depth. This picture must have a smaller or same resolution, than the display-size specified in the Display Definition File: eg. for tr4_svga 800×600; for tr4_vga 640×480.
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The Display Definition File typically has the extension .dis and contains the display-parameters.
It is the same for Trizep2, Trizeps3 and Trizeps4.
Trizeps5 has some differences.
Field | Description |
|---|
Paramcnt | Number of parameters. Currently fixed to 16 (0x10) |
FBADR | FrameBuffer-address. This is the address, where the DMA-descriptors and the framebuffer of the picture will be put. When using Windows CE as OS, use 0x80088000 for Trizeps5 and 0xA0088000 for all other Trizeps. |
Bpp | Bits-Per-Pixel. The bootloader always uses 8Bpp. You may use either 8 or 16(0x10). When using 16, it will be used by Windows CE |
Use16BitPalette | set to 1 |
CxScreen | Horizontal resolution of the display |
CyScreen | Vertical resolution of the display |
Control0 | == LCCR0. See PXA2xx Developers Manual for details. |
Control1 | == LCCR1. See PXA2xx Developers Manual for details. The last 10 bit contains the horizontal resolution of the display. Leave it 0, because it is calculated from CxScreen |
Control2 | == LCCR2. See PXA2xx Developers Manual for details. The last 10 bit contains the veritcal resolution of the display. Leave it 0, because it is calculated from CyScreen |
Control3 | == LCCR3. See PXA2xx Developers Manual for details. |
DataBits | set to 0x10 |
DisplayOn | | Code Block |
|---|
Controls behaviour:
0x8000_0000 Override Registry and use BootBitmap-parameters for the display.
0x4000_0000 Enable VNC-acceleration.
0x0800_0000 Invert palette if using 8Bpp.
0x0400_0000 Use Mono-palette for black&white screens.
0x0300_0000 Enable Cache for framebuffer.
0x000F_F000 GPIO-Number, if a gpio is used for backlight-control.
0x0010_0000 Invert polarity of this backlight-gpio.
0x0000_00FF GPIO-Number, if a gpio is used to enable power to the display.
0x0000_0100 Invert polarity of this power-gpio. |
|
Brightness | Default brightness-value to use. |
Contrast | Default contrast-value to use. |
Feature | | Code Block |
|---|
Contrast-Control:
0x0000_0000 Use EEPOT for contrast-control.
Use also if no other contrast-control is used.
0x2000_0000 Use AD5242 for contrast-control.
0x3000_0000 Use DS1050z for contrast-control.
0x4000_0000 Use PWM for contrast-control.
0xF000_0000 No contrast-control.
0x0000_ff00 The contents of this field is determined by the previous option
( AD5242, DS1050z: i2c-address, PWM: gpio)
Backlight-Control:
0x0000_0000 Use EEPOT for brightness-control.
Use also if no other brighntess-control is used.
0x0200_0000 Use AD5242 for brightness-control.
0x0300_0000 Use DS1050z for brightness-control.
0x0400_0000 Use PWM for brightness-control.
0x0f00_0000 No brightness-control.
0x00ff_0000 The contents of this field is determined by the previous option
( AD5242, DS105z: i2c-address, PWM: gpio).
0x0000_0002 Turn off backlight when brightness is set to minimum value.
0x0000_0004 Don't turn off backlight when using slider of
backlight-control-panel-applet.
BufferStrength of signal-lines:
0x0000_00f0 0: don't change bufferstrength.
1..7: PXA320: 8 is equal to bufferstrength 0. (only supported by bootloader)
1..15: PXA270.
PXA168 uses seperate BufferStrength-key. |
|
UseEDTSSP | Used for special smart-displays, which need additional initialization. i.e. through i2c or SPI |
DisplayName | Name of the display |
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