mirror of
https://github.com/AsahiLinux/m1n1
synced 2024-12-18 17:53:10 +00:00
415 lines
9.9 KiB
C
415 lines
9.9 KiB
C
/* SPDX-License-Identifier: MIT */
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#include "fb.h"
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#include "assert.h"
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#include "iodev.h"
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#include "malloc.h"
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#include "memory.h"
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#include "string.h"
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#include "types.h"
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#include "utils.h"
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#include "xnuboot.h"
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#define FB_DEPTH_MASK 0xff
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fb_t fb;
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struct image {
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u32 *ptr;
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u32 width;
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u32 height;
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};
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static struct {
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struct {
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u8 *ptr;
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u32 width;
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u32 height;
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} font;
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struct {
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u32 row;
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u32 col;
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u32 max_row;
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u32 max_col;
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} cursor;
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struct {
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u32 rows;
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u32 cols;
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} margin;
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bool initialized;
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bool active;
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} console;
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extern u8 _binary_build_bootlogo_128_bin_start[];
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extern u8 _binary_build_bootlogo_256_bin_start[];
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extern u8 _binary_build_font_bin_start[];
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extern u8 _binary_build_font_retina_bin_start[];
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const struct image logo_128 = {
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.ptr = (void *)_binary_build_bootlogo_128_bin_start,
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.width = 128,
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.height = 128,
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};
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const struct image logo_256 = {
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.ptr = (void *)_binary_build_bootlogo_256_bin_start,
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.width = 256,
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.height = 256,
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};
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const struct image *logo;
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struct image orig_logo;
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void fb_update(void)
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{
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memcpy128(fb.hwptr, fb.ptr, fb.size);
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}
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static void fb_clear_font_row(u32 row)
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{
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const u32 row_size = (console.margin.cols + console.cursor.max_col) * console.font.width * 4;
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const u32 ystart = (console.margin.rows + row) * console.font.height * fb.stride;
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for (u32 y = 0; y < console.font.height; ++y)
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memset32(fb.ptr + ystart + y * fb.stride, 0, row_size);
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}
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static void fb_move_font_row(u32 dst, u32 src)
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{
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const u32 row_size = (console.margin.cols + console.cursor.max_col) * console.font.width * 4;
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u32 ysrc = (console.margin.rows + src) * console.font.height;
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u32 ydst = (console.margin.rows + dst) * console.font.height;
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ysrc *= fb.stride;
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ydst *= fb.stride;
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for (u32 y = 0; y < console.font.height; ++y)
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memcpy32(fb.ptr + ydst + y * fb.stride, fb.ptr + ysrc + y * fb.stride, row_size);
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fb_clear_font_row(src);
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}
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static inline u32 rgb2pixel_30(rgb_t c)
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{
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return (c.b << 2) | (c.g << 12) | (c.r << 22);
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}
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static inline rgb_t pixel2rgb_30(u32 c)
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{
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return (rgb_t){(c >> 22) & 0xff, (c >> 12) & 0xff, c >> 2};
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}
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static inline void fb_set_pixel(u32 x, u32 y, rgb_t c)
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{
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fb.ptr[x + y * fb.stride] = rgb2pixel_30(c);
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}
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static inline rgb_t fb_get_pixel(u32 x, u32 y)
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{
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return pixel2rgb_30(fb.ptr[x + y * fb.stride]);
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}
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void fb_blit(u32 x, u32 y, u32 w, u32 h, void *data, u32 stride, pix_fmt_t pix_fmt)
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{
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u8 *p = data;
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for (u32 i = 0; i < h; i++) {
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for (u32 j = 0; j < w; j++) {
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rgb_t color;
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switch (pix_fmt) {
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default:
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case PIX_FMT_XRGB:
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color.r = p[(j + i * stride) * 4];
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color.g = p[(j + i * stride) * 4 + 1];
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color.b = p[(j + i * stride) * 4 + 2];
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break;
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case PIX_FMT_XBGR:
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color.r = p[(j + i * stride) * 4 + 2];
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color.g = p[(j + i * stride) * 4 + 1];
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color.b = p[(j + i * stride) * 4];
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break;
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}
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fb_set_pixel(x + j, y + i, color);
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}
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}
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fb_update();
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}
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void fb_unblit(u32 x, u32 y, u32 w, u32 h, void *data, u32 stride)
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{
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u8 *p = data;
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for (u32 i = 0; i < h; i++) {
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for (u32 j = 0; j < w; j++) {
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rgb_t color = fb_get_pixel(x + j, y + i);
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p[(j + i * stride) * 4] = color.r;
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p[(j + i * stride) * 4 + 1] = color.g;
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p[(j + i * stride) * 4 + 2] = color.b;
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p[(j + i * stride) * 4 + 3] = 0xff;
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}
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}
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}
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void fb_fill(u32 x, u32 y, u32 w, u32 h, rgb_t color)
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{
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u32 c = rgb2pixel_30(color);
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for (u32 i = 0; i < h; i++)
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memset32(&fb.ptr[x + (y + i) * fb.stride], c, w * 4);
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fb_update();
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}
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void fb_clear(rgb_t color)
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{
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u32 c = rgb2pixel_30(color);
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memset32(fb.ptr, c, fb.stride * fb.height * 4);
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fb_update();
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}
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void fb_blit_image(u32 x, u32 y, const struct image *img)
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{
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fb_blit(x, y, img->width, img->height, img->ptr, img->width, PIX_FMT_XRGB);
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}
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void fb_unblit_image(u32 x, u32 y, struct image *img)
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{
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fb_unblit(x, y, img->width, img->height, img->ptr, img->width);
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}
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void fb_blit_logo(const struct image *logo)
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{
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fb_blit_image((fb.width - logo->width) / 2, (fb.height - logo->height) / 2, logo);
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}
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void fb_display_logo(void)
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{
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printf("fb: display logo\n");
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fb_blit_logo(logo);
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}
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void fb_restore_logo(void)
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{
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if (!orig_logo.ptr)
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return;
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fb_blit_logo(&orig_logo);
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}
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void fb_improve_logo(void)
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{
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const u8 magic[] = "BY;iX2gK0b89P9P*Qa";
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u8 *p = (void *)orig_logo.ptr;
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if (!p || p[orig_logo.width * (orig_logo.height + 1) * 2] <= 250)
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return;
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for (u32 i = 0; i < orig_logo.height; i++) {
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const u8 *c = &magic[min((max(i * 128 / orig_logo.height, 41) - 41) / 11, 5) * 3];
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for (u32 j = 0; j < (orig_logo.width * 4); j++, p++)
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*p = (*p * (c[(j - (j >> 2)) % 3] - 42)) / 63;
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}
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}
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static inline rgb_t font_get_pixel(u8 c, u32 x, u32 y)
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{
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c -= 0x20;
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u8 v =
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console.font.ptr[c * console.font.width * console.font.height + y * console.font.width + x];
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rgb_t col = {.r = v, .g = v, .b = v};
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return col;
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}
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static void fb_putbyte(u8 c)
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{
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u32 x = (console.margin.cols + console.cursor.col) * console.font.width;
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u32 y = (console.margin.rows + console.cursor.row) * console.font.height;
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for (u32 i = 0; i < console.font.height; i++)
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for (u32 j = 0; j < console.font.width; j++)
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fb_set_pixel(x + j, y + i, font_get_pixel(c, j, i));
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}
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static void fb_putchar(u8 c)
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{
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if (c == '\r') {
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console.cursor.col = 0;
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} else if (c == '\n') {
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console.cursor.row++;
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console.cursor.col = 0;
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} else if (c >= 0x20 && c < 0x7f) {
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fb_putbyte(c);
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console.cursor.col++;
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} else {
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fb_putbyte('?');
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console.cursor.col++;
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}
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if (console.cursor.col == console.cursor.max_col) {
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console.cursor.row++;
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console.cursor.col = 0;
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}
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if (console.cursor.row == console.cursor.max_row)
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fb_console_scroll(1);
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}
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void fb_console_scroll(u32 n)
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{
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u32 row = 0;
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n = min(n, console.cursor.row);
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for (; row < console.cursor.max_row - n; ++row)
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fb_move_font_row(row, row + n);
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for (; row < console.cursor.max_row; ++row)
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fb_clear_font_row(row);
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console.cursor.row -= n;
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}
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void fb_console_reserve_lines(u32 n)
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{
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if ((console.cursor.max_row - console.cursor.row) <= n)
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fb_console_scroll(1 + n - (console.cursor.max_row - console.cursor.row));
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fb_update();
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}
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ssize_t fb_console_write(const char *bfr, size_t len)
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{
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ssize_t wrote = 0;
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if (!console.initialized || !console.active)
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return 0;
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while (len--) {
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fb_putchar(*bfr++);
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wrote++;
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}
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fb_update();
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return wrote;
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}
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static bool fb_console_iodev_can_write(void *opaque)
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{
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UNUSED(opaque);
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return console.initialized && console.active;
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}
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static ssize_t fb_console_iodev_write(void *opaque, const void *buf, size_t len)
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{
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UNUSED(opaque);
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return fb_console_write(buf, len);
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}
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const struct iodev_ops iodev_fb_ops = {
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.can_write = fb_console_iodev_can_write,
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.write = fb_console_iodev_write,
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};
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struct iodev iodev_fb = {
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.ops = &iodev_fb_ops,
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.usage = USAGE_CONSOLE,
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.lock = SPINLOCK_INIT,
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};
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static void fb_clear_console(void)
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{
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for (u32 row = 0; row < console.cursor.max_row; ++row)
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fb_clear_font_row(row);
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console.cursor.col = 0;
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console.cursor.row = 0;
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fb_update();
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}
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void fb_init(bool clear)
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{
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fb.hwptr = (void *)cur_boot_args.video.base;
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fb.stride = cur_boot_args.video.stride / 4;
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fb.width = cur_boot_args.video.width;
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fb.height = cur_boot_args.video.height;
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fb.depth = cur_boot_args.video.depth & FB_DEPTH_MASK;
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fb.size = cur_boot_args.video.stride * cur_boot_args.video.height;
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printf("fb init: %dx%d (%d) [s=%d] @%p\n", fb.width, fb.height, fb.depth, fb.stride, fb.hwptr);
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mmu_add_mapping(cur_boot_args.video.base, cur_boot_args.video.base, ALIGN_UP(fb.size, 0x4000),
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MAIR_IDX_NORMAL_NC, PERM_RW);
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fb.ptr = malloc(fb.size);
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memcpy(fb.ptr, fb.hwptr, fb.size);
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if (cur_boot_args.video.depth & FB_DEPTH_FLAG_RETINA) {
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logo = &logo_256;
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console.font.ptr = _binary_build_font_retina_bin_start;
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console.font.width = 16;
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console.font.height = 32;
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} else {
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logo = &logo_128;
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console.font.ptr = _binary_build_font_bin_start;
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console.font.width = 8;
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console.font.height = 16;
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}
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if (!orig_logo.ptr) {
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orig_logo = *logo;
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orig_logo.ptr = malloc(orig_logo.width * orig_logo.height * 4);
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fb_unblit_image((fb.width - orig_logo.width) / 2, (fb.height - orig_logo.height) / 2,
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&orig_logo);
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}
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if (clear)
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memset32(fb.ptr, 0, fb.size);
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console.margin.rows = 2;
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console.margin.cols = 4;
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console.cursor.col = 0;
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console.cursor.row = 0;
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console.cursor.max_row = (fb.height / console.font.height) - 2 * console.margin.rows;
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console.cursor.max_col =
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((fb.width - logo->width) / 2) / console.font.width - 2 * console.margin.cols;
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console.initialized = true;
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console.active = false;
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fb_clear_console();
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printf("fb console: max rows %d, max cols %d\n", console.cursor.max_row,
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console.cursor.max_col);
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}
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void fb_set_active(bool active)
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{
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console.active = active;
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if (active)
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iodev_console_kick();
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}
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void fb_shutdown(bool restore_logo)
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{
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if (!console.initialized)
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return;
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console.active = false;
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console.initialized = false;
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fb_clear_console();
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if (restore_logo) {
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fb_restore_logo();
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free(orig_logo.ptr);
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orig_logo.ptr = NULL;
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}
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free(fb.ptr);
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}
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void fb_reinit(void)
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{
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if (!console.initialized)
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return;
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fb_shutdown(false);
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fb_init(true);
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fb_display_logo();
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}
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