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[fb] Use system_map_mmio to map framebuffer

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Update fb driver to use new j6_init_desc_framebuffer format with
physical address, and system_map_mmio to map the framebuffer into its
memory.
This commit is contained in:
Justin C. Miller
2021-02-04 20:44:27 -08:00
parent fe05d45cde
commit e4aafca7c3
3 changed files with 35 additions and 8 deletions
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11
src/drivers/fb/screen.cpp
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@@ -2,13 +2,14 @@
#include <string.h>
#include "screen.h"
screen::screen(void *addr, unsigned hres, unsigned vres, pixel_order order) :
m_fb(static_cast<pixel_t *>(addr)),
screen::screen(volatile void *addr, unsigned hres, unsigned vres, unsigned scanline, pixel_order order) :
m_fb(static_cast<volatile pixel_t *>(addr)),
m_order(order),
m_scanline(scanline),
m_resx(hres),
m_resy(vres)
{
m_back = reinterpret_cast<pixel_t*>(malloc(hres*vres*sizeof(pixel_t)));
m_back = reinterpret_cast<pixel_t*>(malloc(scanline*vres*sizeof(pixel_t)));
}
screen::pixel_t
@@ -46,5 +47,7 @@ screen::draw_pixel(unsigned x, unsigned y, pixel_t color)
void
screen::update()
{
memcpy(m_fb, m_back, m_resx*m_resy*sizeof(pixel_t));
const size_t len = m_scanline * m_resy * sizeof(pixel_t);
asm volatile ( "rep movsb" : :
"c"(len), "S"(m_back), "D"(m_fb) );
}