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#include "common.h"
static u32 *framebuffer = 0;
void
ppu_init(void) {
static MboxFramebufferRequest fb_request = {
.buf_size = 96,
.code = MBOX_REQUEST,
.screen_tag = {
.header = {
.id = 0x48003,
.buf_size = 8,
},
.width = 1024,
.height = 1024,
},
.virtual_screen_tag = {
.header = {
.id = 0x48004,
.buf_size = 8,
},
.width = 1024,
.height = 1024,
},
.depth_tag = {
.header = {
.id = 0x48005,
.buf_size = 4,
},
.depth = 32,
},
.framebuffer_tag = {
.header = {
.id = 0x40001,
.buf_size = 8,
},
.fb_addr = 0,
.fb_size = 0,
}
};
if (mb_call(MBOX_CH_PROP, &fb_request)
&& fb_request.depth_tag.depth == 32
&& fb_request.framebuffer_tag.fb_addr != 0) {
fb_request.framebuffer_tag.fb_addr &= 0x3FFFFFFF;
framebuffer = (u32*)((uintptr_t)fb_request.framebuffer_tag.fb_addr);
for (size_t i = 0; i < 1024 * 100; i++) {
framebuffer[i] = 0xffaa22; // 0xBBGGRR
}
} else {
uart_puts("Unable initialize framebuffer\n");
}
}
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