diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2018-10-11 22:14:30 +0100 |
|---|---|---|
| committer | Andre Przywara <andre.przywara@arm.com> | 2018-10-20 16:23:59 +0100 |
| commit | 4306051365e5b98efa5dc08b04b5b26caae99434 (patch) | |
| tree | cfa2a8a51681cb64355dfb9e39132f251c84c0fb /plat/allwinner | |
| parent | c3af6b0052b343943b8ed4e51658343c966bfc7a (diff) | |
allwinner: Disable USE_COHERENT_MEM
According to the documentation, platforms may choose to trade memory
footprint for performance (and elegancy) by not providing a separately
mapped coherent page.
Since a debug build is getting close to the SRAM size limit already, this
allows us to save about 3.5KB of BSS and have some room for future
enhancements.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'plat/allwinner')
| -rw-r--r-- | plat/allwinner/common/allwinner-common.mk | 3 | ||||
| -rw-r--r-- | plat/allwinner/common/include/platform_def.h | 2 | ||||
| -rw-r--r-- | plat/allwinner/common/sunxi_common.c | 3 |
3 files changed, 4 insertions, 4 deletions
diff --git a/plat/allwinner/common/allwinner-common.mk b/plat/allwinner/common/allwinner-common.mk index 15888a8d..8c772bfc 100644 --- a/plat/allwinner/common/allwinner-common.mk +++ b/plat/allwinner/common/allwinner-common.mk @@ -52,3 +52,6 @@ SEPARATE_CODE_AND_RODATA := 1 # BL31 gets loaded alongside BL33 (U-Boot) by U-Boot's SPL RESET_TO_BL31 := 1 + +# We are short on memory, so save 3.5KB by not having an extra coherent page. +USE_COHERENT_MEM := 0 diff --git a/plat/allwinner/common/include/platform_def.h b/plat/allwinner/common/include/platform_def.h index b7cf30f5..4f9c00ed 100644 --- a/plat/allwinner/common/include/platform_def.h +++ b/plat/allwinner/common/include/platform_def.h @@ -27,7 +27,7 @@ #define CACHE_WRITEBACK_SHIFT 6 #define CACHE_WRITEBACK_GRANULE (1 << CACHE_WRITEBACK_SHIFT) -#define MAX_MMAP_REGIONS (4 + PLATFORM_MMAP_REGIONS) +#define MAX_MMAP_REGIONS (3 + PLATFORM_MMAP_REGIONS) #define MAX_XLAT_TABLES 1 #define PLAT_MAX_PWR_LVL_STATES U(2) diff --git a/plat/allwinner/common/sunxi_common.c b/plat/allwinner/common/sunxi_common.c index ef6f04c7..37cbf98a 100644 --- a/plat/allwinner/common/sunxi_common.c +++ b/plat/allwinner/common/sunxi_common.c @@ -51,9 +51,6 @@ void sunxi_configure_mmu_el3(int flags) mmap_add_region(BL_RO_DATA_BASE, BL_RO_DATA_BASE, BL_RO_DATA_END - BL_RO_DATA_BASE, MT_RO_DATA | MT_SECURE); - mmap_add_region(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_BASE, - BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, - MT_DEVICE | MT_RW | MT_SECURE); mmap_add(sunxi_mmap); init_xlat_tables(); |