libpayload: Cache copy of cb_framebuffer
struct
Our AArch64 code supports dynamic framebuffer allocation which makes it necessary to change the framebuffer information during runtime. Having a pointer inside `libsysinfo` made a mess of it as the pointer would either refer to the original struct inside the coreboot table or to a new struct inside payload space. The latter would be unaffected by a relocation of the payload. Instead of the pointer, we'll always keep a copy of the whole struct, which can be altered on demand without affecting the coreboot table. To align the `video/graphics` driver with the console driver, we also replace `fbaddr` with a macro `FB` that calls phys_to_virt(). Change-Id: I3edc09cdb502a71516c1ee71457c1f8dcd01c119 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/43578 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
committed by
Patrick Georgi
parent
be842cb72d
commit
5e0db58533
@@ -45,8 +45,10 @@ static struct rect screen;
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* Framebuffer is assumed to assign a higher coordinate (larger x, y) to
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* a higher address
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*/
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static struct cb_framebuffer *fbinfo;
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static uint8_t *fbaddr;
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static const struct cb_framebuffer *fbinfo;
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/* Shorthand for up-to-date virtual framebuffer address */
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#define FB ((unsigned char *)phys_to_virt(fbinfo->physical_address))
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#define LOG(x...) printf("CBGFX: " x)
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#define PIVOT_H_MASK (PIVOT_H_LEFT|PIVOT_H_CENTER|PIVOT_H_RIGHT)
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@@ -296,7 +298,7 @@ static inline void set_pixel(struct vector *coord, uint32_t color)
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break;
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}
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uint8_t * const pixel = fbaddr + rcoord.y * bpl + rcoord.x * bpp / 8;
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uint8_t * const pixel = FB + rcoord.y * bpl + rcoord.x * bpp / 8;
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for (i = 0; i < bpp / 8; i++)
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pixel[i] = (color >> (i * 8));
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}
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@@ -310,12 +312,9 @@ static int cbgfx_init(void)
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if (initialized)
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return 0;
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fbinfo = lib_sysinfo.framebuffer;
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if (!fbinfo)
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return CBGFX_ERROR_FRAMEBUFFER_INFO;
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fbinfo = &lib_sysinfo.framebuffer;
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fbaddr = phys_to_virt((uint8_t *)(uintptr_t)(fbinfo->physical_address));
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if (!fbaddr)
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if (!fbinfo->physical_address)
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return CBGFX_ERROR_FRAMEBUFFER_ADDR;
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switch (fbinfo->orientation) {
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@@ -627,7 +626,7 @@ int clear_screen(const struct rgb_color *rgb)
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* We assume that for 32bpp the high byte gets ignored anyway. */
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if ((((color >> 8) & 0xff) == (color & 0xff)) && (bpp == 16 ||
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(((color >> 16) & 0xff) == (color & 0xff)))) {
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memset(fbaddr, color & 0xff, fbinfo->y_resolution * bpl);
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memset(FB, color & 0xff, fbinfo->y_resolution * bpl);
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} else {
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for (p.y = 0; p.y < screen.size.height; p.y++)
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for (p.x = 0; p.x < screen.size.width; p.x++)
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