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path: root/payloads/libpayload/drivers
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Diffstat (limited to 'payloads/libpayload/drivers')
-rw-r--r--payloads/libpayload/drivers/video/corebootfb.c110
1 files changed, 54 insertions, 56 deletions
diff --git a/payloads/libpayload/drivers/video/corebootfb.c b/payloads/libpayload/drivers/video/corebootfb.c
index 8e7ac11540..efd13a7d12 100644
--- a/payloads/libpayload/drivers/video/corebootfb.c
+++ b/payloads/libpayload/drivers/video/corebootfb.c
@@ -64,41 +64,39 @@ static const u32 vga_colors[] = {
struct cb_framebuffer fbinfo;
static unsigned short *chars;
-/* Addresses for the various components */
-#define FI (&fbinfo)
-#define FB ((unsigned char *) phys_to_virt(FI->physical_address))
-#define CHARS (chars)
+/* Shorthand for up-to-date virtual framebuffer address */
+#define FB ((unsigned char *)phys_to_virt(fbinfo.physical_address))
static void corebootfb_scroll_up(void)
{
unsigned char *dst = FB;
- unsigned char *src = FB + (FI->bytes_per_line * font_height);
+ unsigned char *src = FB + (fbinfo.bytes_per_line * font_height);
int y;
/* Scroll all lines up */
- for(y = 0; y < FI->y_resolution - font_height; y++) {
- memcpy(dst, src, FI->x_resolution * (FI->bits_per_pixel >> 3));
+ for (y = 0; y < fbinfo.y_resolution - font_height; y++) {
+ memcpy(dst, src, fbinfo.x_resolution * (fbinfo.bits_per_pixel >> 3));
- dst += FI->bytes_per_line;
- src += FI->bytes_per_line;
+ dst += fbinfo.bytes_per_line;
+ src += fbinfo.bytes_per_line;
}
/* Erase last line */
- dst = FB + (FI->y_resolution - font_height) * FI->bytes_per_line;
+ dst = FB + (fbinfo.y_resolution - font_height) * fbinfo.bytes_per_line;
- for(; y < FI->y_resolution; y++) {
- memset(dst, 0, FI->x_resolution * (FI->bits_per_pixel >> 3));
- dst += FI->bytes_per_line;
+ for (; y < fbinfo.y_resolution; y++) {
+ memset(dst, 0, fbinfo.x_resolution * (fbinfo.bits_per_pixel >> 3));
+ dst += fbinfo.bytes_per_line;
}
/* And update the char buffer */
- dst = (unsigned char *) CHARS;
- src = (unsigned char *) (CHARS + coreboot_video_console.columns);
+ dst = (unsigned char *)chars;
+ src = (unsigned char *)(chars + coreboot_video_console.columns);
memcpy(dst, src, coreboot_video_console.columns *
(coreboot_video_console.rows - 1) * 2);
int column;
for (column = 0; column < coreboot_video_console.columns; column++)
- CHARS[(coreboot_video_console.rows - 1) * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8);
+ chars[(coreboot_video_console.rows - 1) * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8);
cursor_y--;
}
@@ -109,15 +107,15 @@ static void corebootfb_clear(void)
unsigned char *ptr = FB;
/* Clear the screen */
- for(row = 0; row < FI->y_resolution; row++) {
- memset(ptr, 0, FI->x_resolution * (FI->bits_per_pixel >> 3));
- ptr += FI->bytes_per_line;
+ for (row = 0; row < fbinfo.y_resolution; row++) {
+ memset(ptr, 0, fbinfo.x_resolution * (fbinfo.bits_per_pixel >> 3));
+ ptr += fbinfo.bytes_per_line;
}
/* And update the char buffer */
for(row = 0; row < coreboot_video_console.rows; row++)
for (column = 0; column < coreboot_video_console.columns; column++)
- CHARS[row * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8);
+ chars[row * coreboot_video_console.columns + column] = (VGA_COLOR_DEFAULT << 8);
}
static void corebootfb_putchar(u8 row, u8 col, unsigned int ch)
@@ -132,55 +130,55 @@ static void corebootfb_putchar(u8 row, u8 col, unsigned int ch)
int x, y;
- if (FI->bits_per_pixel > 8) {
- bgval = ((((vga_colors[bg] >> 0) & 0xff) >> (8 - FI->blue_mask_size)) << FI->blue_mask_pos) |
- ((((vga_colors[bg] >> 8) & 0xff) >> (8 - FI->green_mask_size)) << FI->green_mask_pos) |
- ((((vga_colors[bg] >> 16) & 0xff) >> (8 - FI->red_mask_size)) << FI->red_mask_pos);
- fgval = ((((vga_colors[fg] >> 0) & 0xff) >> (8 - FI->blue_mask_size)) << FI->blue_mask_pos) |
- ((((vga_colors[fg] >> 8) & 0xff) >> (8 - FI->green_mask_size)) << FI->green_mask_pos) |
- ((((vga_colors[fg] >> 16) & 0xff) >> (8 - FI->red_mask_size)) << FI->red_mask_pos);
+ if (fbinfo.bits_per_pixel > 8) {
+ bgval = ((((vga_colors[bg] >> 0) & 0xff) >> (8 - fbinfo.blue_mask_size)) << fbinfo.blue_mask_pos) |
+ ((((vga_colors[bg] >> 8) & 0xff) >> (8 - fbinfo.green_mask_size)) << fbinfo.green_mask_pos) |
+ ((((vga_colors[bg] >> 16) & 0xff) >> (8 - fbinfo.red_mask_size)) << fbinfo.red_mask_pos);
+ fgval = ((((vga_colors[fg] >> 0) & 0xff) >> (8 - fbinfo.blue_mask_size)) << fbinfo.blue_mask_pos) |
+ ((((vga_colors[fg] >> 8) & 0xff) >> (8 - fbinfo.green_mask_size)) << fbinfo.green_mask_pos) |
+ ((((vga_colors[fg] >> 16) & 0xff) >> (8 - fbinfo.red_mask_size)) << fbinfo.red_mask_pos);
}
- dst = FB + ((row * font_height) * FI->bytes_per_line);
- dst += (col * font_width * (FI->bits_per_pixel >> 3));
+ dst = FB + ((row * font_height) * fbinfo.bytes_per_line);
+ dst += (col * font_width * (fbinfo.bits_per_pixel >> 3));
for(y = 0; y < font_height; y++) {
for(x = font_width - 1; x >= 0; x--) {
- switch (FI->bits_per_pixel) {
+ switch (fbinfo.bits_per_pixel) {
case 8: /* Indexed */
- dst[(font_width - x) * (FI->bits_per_pixel >> 3)] = font_glyph_filled(ch, x, y) ? fg : bg;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3)] = font_glyph_filled(ch, x, y) ? fg : bg;
break;
case 16: /* 16 bpp */
- dst16 = (u16 *)(dst + (font_width - x) * (FI->bits_per_pixel >> 3));
+ dst16 = (u16 *)(dst + (font_width - x) * (fbinfo.bits_per_pixel >> 3));
*dst16 = font_glyph_filled(ch, x, y) ? fgval : bgval;
break;
case 24: /* 24 bpp */
if (font_glyph_filled(ch, x, y)) {
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 0] = fgval & 0xff;
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 1] = (fgval >> 8) & 0xff;
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 2] = (fgval >> 16) & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 0] = fgval & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 1] = (fgval >> 8) & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 2] = (fgval >> 16) & 0xff;
} else {
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 0] = bgval & 0xff;
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 1] = (bgval >> 8) & 0xff;
- dst[(font_width - x) * (FI->bits_per_pixel >> 3) + 2] = (bgval >> 16) & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 0] = bgval & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 1] = (bgval >> 8) & 0xff;
+ dst[(font_width - x) * (fbinfo.bits_per_pixel >> 3) + 2] = (bgval >> 16) & 0xff;
}
break;
case 32: /* 32 bpp */
- dst32 = (u32 *)(dst + (font_width - x) * (FI->bits_per_pixel >> 3));
+ dst32 = (u32 *)(dst + (font_width - x) * (fbinfo.bits_per_pixel >> 3));
*dst32 = font_glyph_filled(ch, x, y) ? fgval : bgval;
break;
}
}
- dst += FI->bytes_per_line;
+ dst += fbinfo.bytes_per_line;
}
}
static void corebootfb_putc(u8 row, u8 col, unsigned int ch)
{
- CHARS[row * coreboot_video_console.columns + col] = ch;
+ chars[row * coreboot_video_console.columns + col] = ch;
corebootfb_putchar(row, col, ch);
}
@@ -188,10 +186,10 @@ static void corebootfb_update_cursor(void)
{
int ch, paint;
if(cursor_en) {
- ch = CHARS[cursor_y * coreboot_video_console.columns + cursor_x];
+ ch = chars[cursor_y * coreboot_video_console.columns + cursor_x];
paint = (ch & 0xff) | ((ch << 4) & 0xf000) | ((ch >> 4) & 0x0f00);
} else {
- paint = CHARS[cursor_y * coreboot_video_console.columns + cursor_x];
+ paint = chars[cursor_y * coreboot_video_console.columns + cursor_x];
}
if (cursor_y < coreboot_video_console.rows)
@@ -231,20 +229,20 @@ static int corebootfb_init(void)
fbinfo = *lib_sysinfo.framebuffer;
- if (FI->physical_address == 0)
+ if (fbinfo.physical_address == 0)
return -1;
- font_init(FI->x_resolution);
+ font_init(fbinfo.x_resolution);
/* Draw centered on the framebuffer if requested and feasible, */
const int center =
IS_ENABLED(CONFIG_LP_COREBOOT_VIDEO_CENTERED)
- && coreboot_video_console.columns * font_width <= FI->x_resolution
- && coreboot_video_console.rows * font_height <= FI->y_resolution;
+ && coreboot_video_console.columns * font_width <= fbinfo.x_resolution
+ && coreboot_video_console.rows * font_height <= fbinfo.y_resolution;
/* adapt to the framebuffer size, otherwise. */
if (!center) {
- coreboot_video_console.columns = FI->x_resolution / font_width;
- coreboot_video_console.rows = FI->y_resolution / font_height;
+ coreboot_video_console.columns = fbinfo.x_resolution / font_width;
+ coreboot_video_console.rows = fbinfo.y_resolution / font_height;
}
chars = malloc(coreboot_video_console.rows *
@@ -256,13 +254,13 @@ static int corebootfb_init(void)
corebootfb_clear();
if (center) {
- FI->physical_address +=
- (FI->x_resolution - coreboot_video_console.columns * font_width)
- / 2 * FI->bits_per_pixel / 8
- + (FI->y_resolution - coreboot_video_console.rows * font_height)
- / 2 * FI->bytes_per_line;
- FI->x_resolution = coreboot_video_console.columns * font_width;
- FI->y_resolution = coreboot_video_console.rows * font_height;
+ fbinfo.physical_address +=
+ (fbinfo.x_resolution - coreboot_video_console.columns * font_width)
+ / 2 * fbinfo.bits_per_pixel / 8
+ + (fbinfo.y_resolution - coreboot_video_console.rows * font_height)
+ / 2 * fbinfo.bytes_per_line;
+ fbinfo.x_resolution = coreboot_video_console.columns * font_width;
+ fbinfo.y_resolution = coreboot_video_console.rows * font_height;
}
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 21:40:57 +0000