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| author | Louis Mayencourt <louis.mayencourt@arm.com> | 2019-12-09 11:29:38 +0000 |
|---|---|---|
| committer | Louis Mayencourt <louis.mayencourt@arm.com> | 2019-12-09 14:15:40 +0000 |
| commit | 6c77dfc5e6a306033cba9793fe6280511e512bad (patch) | |
| tree | a3dbbca76bd0ce4d9d79885aba228ccd7c546348 /plat | |
| parent | 87b582ef5b31c5893a470b61c217931fc7602da3 (diff) | |
| download | platform_external_arm-trusted-firmware-6c77dfc5e6a306033cba9793fe6280511e512bad.tar.gz platform_external_arm-trusted-firmware-6c77dfc5e6a306033cba9793fe6280511e512bad.tar.bz2 platform_external_arm-trusted-firmware-6c77dfc5e6a306033cba9793fe6280511e512bad.zip | |
Use the proper size for tb_fw_cfg_dtb
Currently tb_fw_cfg_dtb size is fixed to max, which is generally a page
(but depend on the platform). Instead, read the actual size of the dtb
with the libfdt "fdt_totalsize" function.
This avoid flushing extra memory after updating the dtb with mbedtls
heap information when shared heap is used.
Change-Id: Ibec727661116429f486464a0c9f15e9760d7afe2
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>
Diffstat (limited to 'plat')
| -rw-r--r-- | plat/arm/common/arm_dyn_cfg.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/plat/arm/common/arm_dyn_cfg.c b/plat/arm/common/arm_dyn_cfg.c index 9a5364952..aafb190d5 100644 --- a/plat/arm/common/arm_dyn_cfg.c +++ b/plat/arm/common/arm_dyn_cfg.c @@ -1,11 +1,12 @@ /* - * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #include <assert.h> #include <string.h> +#include <libfdt.h> #include <platform_def.h> @@ -21,8 +22,6 @@ /* Variable to store the address to TB_FW_CONFIG passed from BL1 */ static void *tb_fw_cfg_dtb; -static size_t tb_fw_cfg_dtb_size; - #if TRUSTED_BOARD_BOOT @@ -110,7 +109,7 @@ void arm_bl1_set_mbedtls_heap(void) * without the heap info. */ flush_dcache_range((uintptr_t)tb_fw_cfg_dtb, - tb_fw_cfg_dtb_size); + fdt_totalsize(tb_fw_cfg_dtb)); } } @@ -146,7 +145,6 @@ void arm_load_tb_fw_config(void) /* At this point we know that a DTB is indeed available */ config_base = arm_tb_fw_info.image_info.image_base; tb_fw_cfg_dtb = (void *)config_base; - tb_fw_cfg_dtb_size = (size_t)arm_tb_fw_info.image_info.image_max_size; /* The BL2 ep_info arg0 is modified to point to TB_FW_CONFIG */ desc = bl1_plat_get_image_desc(BL2_IMAGE_ID); |