From: Bhuvanchandra DV bhuvanchandra.dv@toradex.com
Make sure CMA memory is not greater than 50% of available physical memory.
Allow user to change the CMA memory via 'cma-size' U-Boot environment variable.
Signed-off-by: Bhuvanchandra DV bhuvanchandra.dv@toradex.com Acked-by: Marcel Ziswiler marcel.ziswiler@toradex.com
---
board/toradex/colibri_imx6/colibri_imx6.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/board/toradex/colibri_imx6/colibri_imx6.c b/board/toradex/colibri_imx6/colibri_imx6.c index 76b776e17e..fd988bd2b0 100644 --- a/board/toradex/colibri_imx6/colibri_imx6.c +++ b/board/toradex/colibri_imx6/colibri_imx6.c @@ -22,6 +22,7 @@ #include <asm/mach-imx/iomux-v3.h> #include <asm/mach-imx/sata.h> #include <asm/mach-imx/video.h> +#include <cpu.h> #include <dm/platform_data/serial_mxc.h> #include <environment.h> #include <fsl_esdhc.h> @@ -679,7 +680,18 @@ int checkboard(void) #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) int ft_board_setup(void *blob, bd_t *bd) { - return ft_common_board_setup(blob, bd); + u32 cma_size; + + ft_common_board_setup(blob, bd); + + cma_size = getenv_ulong("cma-size", 10, 320 * 1024 * 1024); + cma_size = min((u32)(gd->ram_size >> 1), cma_size); + + fdt_setprop_u32(blob, + fdt_path_offset(blob, "/reserved-memory/linux,cma"), + "size", + cma_size); + return 0; } #endif