libpayload: fix garbage on screen with Geode-LX VGA
Clear initial garbage in VGA memory and fix scroll_up, which scrolled 1 scanline instead of 1 text line by mistake. Signed-off-by: Jens Rottmann <JRottmann@LiPPERTEmbedded.de> Acked-by: Patrick Georgi <patrick@georgi-clan.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5722 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
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@ -206,7 +206,7 @@ static void geodelx_set_palette(int entry, unsigned int color)
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static void geodelx_scroll_up(void)
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{
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unsigned char *dst = FB;
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unsigned char *src = FB + vga_mode.hactive;
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unsigned char *src = FB + FONT_HEIGHT * vga_mode.hactive;
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int y;
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for(y = 0; y < vga_mode.vactive - FONT_HEIGHT; y++) {
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@ -216,8 +216,6 @@ static void geodelx_scroll_up(void)
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src += vga_mode.hactive;
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}
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dst = FB + (vga_mode.vactive - FONT_HEIGHT) * vga_mode.hactive;
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for(; y < vga_mode.vactive; y++) {
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memset(dst, 0, vga_mode.hactive);
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dst += vga_mode.hactive;
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@ -280,6 +278,8 @@ static int geodelx_init(void)
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geodelx_set_palette(i, vga_colors[i]);
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}
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geodelx_clear();
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return 0;
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}
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