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| author | Devarsh Thakkar <devarsht@ti.com> | 2023-12-05 21:25:16 +0530 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-01-29 14:49:17 -0500 |
| commit | 1d3c266758570ea7d329746ae2d5b31fb12b9f61 (patch) | |
| tree | 1809c412742618f13b3755b86d27c8a3eab7db6a | |
| parent | 52a86e69e2043fb488be67f5cfbbdeb30a02ddae (diff) | |
| download | u-boot-1d3c266758570ea7d329746ae2d5b31fb12b9f61.zip u-boot-1d3c266758570ea7d329746ae2d5b31fb12b9f61.tar.gz u-boot-1d3c266758570ea7d329746ae2d5b31fb12b9f61.tar.bz2 | |
spl: Enforce framebuffer reservation from end of RAM
Add an API which enforces framebuffer reservation from end of RAM.
This is done so that next stage can directly skip this region before
carrying out further reservations.
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | common/spl/spl.c | 19 | ||||
| -rw-r--r-- | include/spl.h | 10 |
2 files changed, 29 insertions, 0 deletions
diff --git a/common/spl/spl.c b/common/spl/spl.c index 3ce5bfe..b65c439 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -42,6 +42,7 @@ #include <fdt_support.h> #include <bootcount.h> #include <wdt.h> +#include <video.h> DECLARE_GLOBAL_DATA_PTR; DECLARE_BINMAN_MAGIC_SYM; @@ -152,6 +153,24 @@ void spl_fixup_fdt(void *fdt_blob) #endif } +int spl_reserve_video_from_ram_top(void) +{ + if (CONFIG_IS_ENABLED(VIDEO)) { + ulong addr; + int ret; + + addr = gd->ram_top; + ret = video_reserve(&addr); + if (ret) + return ret; + debug("Reserving %luk for video at: %08lx\n", + ((unsigned long)gd->relocaddr - addr) >> 10, addr); + gd->relocaddr = addr; + } + + return 0; +} + ulong spl_get_image_pos(void) { if (!CONFIG_IS_ENABLED(BINMAN_UBOOT_SYMBOLS)) diff --git a/include/spl.h b/include/spl.h index 0952188..043875f 100644 --- a/include/spl.h +++ b/include/spl.h @@ -889,6 +889,16 @@ int spl_usb_load(struct spl_image_info *spl_image, int spl_ymodem_load_image(struct spl_image_info *spl_image, struct spl_boot_device *bootdev); +/** + * spl_reserve_video_from_ram_top() - Reserve framebuffer memory from end of RAM + * + * This enforces framebuffer reservation at SPL stage from end of RAM so that + * next stage can directly skip this pre-reserved area before carrying out + * further reservations. The allocation address is stored in struct video_uc_plat. + * + * Return: 0 on success, otherwise error code + */ +int spl_reserve_video_from_ram_top(void); /** * spl_invoke_atf - boot using an ARM trusted firmware image |