From df048a64d344a36303cc56ab8da89887e4381491 Mon Sep 17 00:00:00 2001 From: Bhuvanchandra DV Date: Tue, 6 Jun 2017 16:16:27 +0530 Subject: toradex: colibri_imx6: overwrite CMA memory set in device tree 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 Acked-by: Marcel Ziswiler --- 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 20daa5c447..eb2c552c4b 100644 --- a/board/toradex/colibri_imx6/colibri_imx6.c +++ b/board/toradex/colibri_imx6/colibri_imx6.c @@ -35,6 +35,7 @@ #include #include #include +#include #include "../common/tdx-cfg-block.h" #ifdef CONFIG_TDX_CMD_IMX_MFGR @@ -718,7 +719,18 @@ 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 -- cgit v1.2.3