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authorStefan Reinauer <reinauer@chromium.org>2013-05-20 15:17:44 -0700
committerStefan Reinauer <stefan.reinauer@coreboot.org>2013-07-10 21:46:23 +0200
commitf17519120a4d76cd18d12e94987b65b336f32f59 (patch)
tree8b9eaf33907d71843d75a4072cdcb0f3acb7f572 /src/cpu
parent1162103958fad815e10b90524560b3b81f2c0b18 (diff)
exynos5420: Simplify the graphics code by eliminating the unused color map
The code that allocated space for the framebuffer was adding space for a vestigial color map which was never used. It was also passing around a structure which was used to calculate a single value which was already known when that structure was put together. Eliminate the extra space, and pass the single value instead of the structure. Change-Id: I29bc17488539dbe695908e47f0b80c07e102e17d Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-on: http://review.coreboot.org/3666 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/cpu')
-rw-r--r--src/cpu/samsung/exynos5420/cpu.c21
-rw-r--r--src/cpu/samsung/exynos5420/dp-core.h16
-rw-r--r--src/cpu/samsung/exynos5420/fb.c29
3 files changed, 17 insertions, 49 deletions
diff --git a/src/cpu/samsung/exynos5420/cpu.c b/src/cpu/samsung/exynos5420/cpu.c
index 0abc0a3022..e83c16ad0a 100644
--- a/src/cpu/samsung/exynos5420/cpu.c
+++ b/src/cpu/samsung/exynos5420/cpu.c
@@ -68,12 +68,10 @@ static void exynos_displayport_init(device_t dev)
/* put these on the stack. If, at some point, we want to move
* this code to a pre-ram stage, it will be much easier.
*/
- vidinfo_t vi;
struct exynos5_fimd_panel panel;
unsigned long int fb_size;
u32 lcdbase;
- memset(&vi, 0, sizeof(vi));
memset(&panel, 0, sizeof(panel));
panel.is_dp = 1; /* Display I/F is eDP */
@@ -94,18 +92,10 @@ static void exynos_displayport_init(device_t dev)
panel.xres = conf->xres;
panel.yres = conf->yres;
- vi.vl_col = conf->xres;
- vi.vl_row = conf->yres;
- vi.vl_bpix = conf->bpp;
- /*
- * The size is a magic number from hardware. Allocate enough for the
- * frame buffer and color map.
- */
+ /* The size is a magic number from hardware. */
fb_size = conf->xres * conf->yres * (conf->bpp / 8);
- lcdbase = (uintptr_t)cbmem_add(CBMEM_ID_CONSOLE, fb_size + 64*KiB);
- printk(BIOS_SPEW, "LCD colormap base is %p\n", (void *)(lcdbase));
- mmio_resource(dev, 0, lcdbase/KiB, 64);
- vi.cmap = (void *)lcdbase;
+ lcdbase = (uintptr_t)cbmem_add(CBMEM_ID_CONSOLE, fb_size);
+ printk(BIOS_SPEW, "LCD framebuffer base is %p\n", (void *)(lcdbase));
/*
* We need to clean and invalidate the framebuffer region and disable
@@ -119,18 +109,17 @@ static void exynos_displayport_init(device_t dev)
* FIXME: Is disabling/re-enabling the MMU entirely necessary?
*/
uint32_t lower = ALIGN_DOWN(lcdbase, MiB);
- uint32_t upper = ALIGN_UP(lcdbase + fb_size + 64*KiB, MiB);
+ uint32_t upper = ALIGN_UP(lcdbase + fb_size, MiB);
dcache_clean_invalidate_by_mva(lower, upper - lower);
dcache_mmu_disable();
mmu_config_range(lower/MiB, (upper - lower)/MiB, DCACHE_OFF);
dcache_mmu_enable();
- lcdbase += 64*KiB;
mmio_resource(dev, 1, lcdbase/KiB, (fb_size + KiB - 1)/KiB);
printk(BIOS_DEBUG,
"Initializing Exynos VGA, base %p\n", (void *)lcdbase);
memset((void *)lcdbase, 0, fb_size); /* clear the framebuffer */
- ret = lcd_ctrl_init(&vi, &panel, (void *)lcdbase);
+ ret = lcd_ctrl_init(fb_size, &panel, (void *)lcdbase);
}
static void cpu_init(device_t dev)
diff --git a/src/cpu/samsung/exynos5420/dp-core.h b/src/cpu/samsung/exynos5420/dp-core.h
index 7b81037776..62144e3a26 100644
--- a/src/cpu/samsung/exynos5420/dp-core.h
+++ b/src/cpu/samsung/exynos5420/dp-core.h
@@ -117,14 +117,6 @@ struct s5p_dp_device {
struct link_train link_train;
};
-/* this struct is used by mainboards to pass mode info to the driver */
-typedef struct vidinfo {
- u16 vl_col;
- u16 vl_row;
- u8 vl_bpix;
- u16 *cmap;
-} vidinfo_t;
-
/* s5p_dp_reg.c */
/*
@@ -260,9 +252,9 @@ void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp);
/* startup and init */
struct exynos5_fimd_panel;
-void fb_init(vidinfo_t *panel_info, void *lcdbase,
- struct exynos5_fimd_panel *pd);
+void fb_init(unsigned long int fb_size, void *lcdbase,
+ struct exynos5_fimd_panel *pd);
int dp_controller_init(struct s5p_dp_device *dp_device);
-int lcd_ctrl_init(vidinfo_t *panel_info,
- struct exynos5_fimd_panel *panel_data, void *lcdbase);
+int lcd_ctrl_init(unsigned long int fb_size,
+ struct exynos5_fimd_panel *panel_data, void *lcdbase);
#endif /* CPU_SAMSUNG_EXYNOS5420_DP_CORE_H */
diff --git a/src/cpu/samsung/exynos5420/fb.c b/src/cpu/samsung/exynos5420/fb.c
index d4c3d447bd..760f5ee4bf 100644
--- a/src/cpu/samsung/exynos5420/fb.c
+++ b/src/cpu/samsung/exynos5420/fb.c
@@ -116,32 +116,21 @@ static void fimd_bypass(void)
sysreg->disp1blk_cfg &= ~FIMDBYPASS_DISP1;
}
-/* Calculate the size of Framebuffer from the resolution */
-static u32 calc_fbsize(vidinfo_t *panel_info)
-{
- /* They had PAGE_SIZE here instead of 4096.
- * but that's a totally arbitrary number -- everything nowadays
- * has lots of page sizes.
- * So keep it obvious.
- */
- return ALIGN((panel_info->vl_col * panel_info->vl_row *
- ((1<<panel_info->vl_bpix) / 8)), 4096);
-}
-
/*
* Initialize display controller.
*
* @param lcdbase pointer to the base address of framebuffer.
* @pd pointer to the main panel_data structure
*/
-void fb_init(vidinfo_t *panel_info, void *lcdbase,
- struct exynos5_fimd_panel *pd)
+void fb_init(unsigned long int fb_size, void *lcdbase,
+ struct exynos5_fimd_panel *pd)
{
unsigned int val;
- u32 fbsize;
struct exynos5_fimd *fimd = samsung_get_base_fimd();
struct exynos5_disp_ctrl *disp_ctrl = samsung_get_base_disp_ctrl();
+ fb_size = ALIGN(fb_size, 4096);
+
writel(pd->ivclk | pd->fixvclk, &disp_ctrl->vidcon1);
val = ENVID_ON | ENVID_F_ON | (pd->clkval_f << CLKVAL_F_OFFSET);
writel(val, &fimd->vidcon0);
@@ -161,9 +150,7 @@ void fb_init(vidinfo_t *panel_info, void *lcdbase,
writel(val, &disp_ctrl->vidtcon2);
writel((unsigned int)lcdbase, &fimd->vidw00add0b0);
-
- fbsize = calc_fbsize(panel_info);
- writel((unsigned int)lcdbase + fbsize, &fimd->vidw00add1b0);
+ writel((unsigned int)lcdbase + fb_size, &fimd->vidw00add1b0);
writel(pd->xres * 2, &fimd->vidw00add2);
@@ -586,12 +573,12 @@ int dp_controller_init(struct s5p_dp_device *dp_device)
* @param lcdbase Base address of LCD frame buffer
* @return 0 if ok, -ve error code on error
*/
-int lcd_ctrl_init(vidinfo_t *panel_info,
- struct exynos5_fimd_panel *panel_data, void *lcdbase)
+int lcd_ctrl_init(unsigned long int fb_size,
+ struct exynos5_fimd_panel *panel_data, void *lcdbase)
{
int ret = 0;
fimd_bypass();
- fb_init(panel_info, lcdbase, panel_data);
+ fb_init(fb_size, lcdbase, panel_data);
return ret;
}