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dm: common: Add memory reservation for the video uclass

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Before relocation we need to reserve memory for the video driver frame
buffers so that they can use this memory when they start up (after
relocation). Add a call to the uclass to permit this.

The current top and bottom of the region is stored in global_data so that
it can be checked post-relocation to ensure enough memory is available. No
video device should be probed before relocation.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Simon Glass 2016-01-18 19:52:21 -07:00
parent 8703ef3fdb
commit 5a54194515
2 changed files with 39 additions and 12 deletions
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47
common/board_f.c
View file

@ -46,6 +46,7 @@
#include <spi.h>
#include <status_led.h>
#include <trace.h>
#include <video.h>
#include <watchdog.h>
#include <asm/errno.h>
#include <asm/io.h>
@ -437,21 +438,38 @@ static int reserve_mmu(void)
}
#endif
#ifdef CONFIG_LCD
#ifdef CONFIG_DM_VIDEO
static int reserve_video(void)
{
ulong addr;
int ret;
addr = gd->relocaddr;
ret = video_reserve(&addr);
if (ret)
return ret;
gd->relocaddr = addr;
return 0;
}
#else
# ifdef CONFIG_LCD
static int reserve_lcd(void)
{
#ifdef CONFIG_FB_ADDR
# ifdef CONFIG_FB_ADDR
gd->fb_base = CONFIG_FB_ADDR;
#else
# else
/* reserve memory for LCD display (always full pages) */
gd->relocaddr = lcd_setmem(gd->relocaddr);
gd->fb_base = gd->relocaddr;
#endif /* CONFIG_FB_ADDR */
# endif /* CONFIG_FB_ADDR */
return 0;
}
#endif /* CONFIG_LCD */
# endif /* CONFIG_LCD */
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
# if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
!defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
!defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
static int reserve_legacy_video(void)
@ -462,7 +480,8 @@ static int reserve_legacy_video(void)
return 0;
}
#endif
# endif
#endif /* !CONFIG_DM_VIDEO */
static int reserve_trace(void)
{
@ -957,15 +976,19 @@ static init_fnc_t init_sequence_f[] = {
defined(CONFIG_ARM)
reserve_mmu,
#endif
#ifdef CONFIG_LCD
#ifdef CONFIG_DM_VIDEO
reserve_video,
#else
# ifdef CONFIG_LCD
reserve_lcd,
#endif
# endif
/* TODO: Why the dependency on CONFIG_8xx? */
#if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
# if defined(CONFIG_VIDEO) && (!defined(CONFIG_PPC) || defined(CONFIG_8xx)) && \
!defined(CONFIG_ARM) && !defined(CONFIG_X86) && \
!defined(CONFIG_BLACKFIN) && !defined(CONFIG_M68K)
reserve_video,
#endif
reserve_legacy_video,
# endif
#endif /* CONFIG_DM_VIDEO */
reserve_trace,
#if !defined(CONFIG_BLACKFIN)
reserve_uboot,

4
include/asm-generic/global_data.h
View file

@ -122,6 +122,10 @@ typedef struct global_data {
struct membuff console_out; /* console output */
struct membuff console_in; /* console input */
#endif
#ifdef CONFIG_DM_VIDEO
ulong video_top; /* Top of video frame buffer area */
ulong video_bottom; /* Bottom of video frame buffer area */
#endif
} gd_t;
#endif