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ARM: AM335x: Beaglebone: Use stripped down devicetree for MLO 

The beaglebone white and black have different devicetrees. Both
get linked into the MLO which makes it too big. Use a devicetree
generated from am335x-bone-common.dtsi which both board variants
can share. This reduces the binary size by about 30k.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2014-06-05 12:09:07 +02:00
parent 08a33804a1
commit 0d6392de4a
3 changed files with 16 additions and 6 deletions
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10
arch/arm/boards/beaglebone/lowlevel.c
View File

@ -104,6 +104,7 @@ static const struct am33xx_emif_regs ddr3_regs = {
};
extern char __dtb_am335x_boneblack_start[];
extern char __dtb_am335x_bone_common_start[];
extern char __dtb_am335x_bone_start[];
/**
@ -120,13 +121,12 @@ static noinline int beaglebone_sram_init(void)
uint32_t sdram_size;
void *fdt;
if (is_beaglebone_black()) {
fdt = __dtb_am335x_bone_common_start;
if (is_beaglebone_black())
sdram_size = SZ_512M;
fdt = __dtb_am335x_boneblack_start;
} else {
else
sdram_size = SZ_256M;
fdt = __dtb_am335x_bone_start;
}
/* WDT1 is already running when the bootloader gets control
* Disable it to avoid "random" resets

3
arch/arm/dts/Makefile
View File

@ -1,6 +1,7 @@
dtb-$(CONFIG_ARCH_AM33XX) += \
am335x-bone.dtb \
am335x-boneblack.dtb \
am335x-bone-common.dtb \
am335x-phytec-phycore.dtb
dtb-$(CONFIG_ARCH_IMX25) += imx25-karo-tx25.dtb
dtb-$(CONFIG_ARCH_IMX27) += imx27-phytec-phycard-s-rdk-bb.dtb
@ -43,7 +44,7 @@ dtb-$(CONFIG_ARCH_TEGRA) += \
BUILTIN_DTB := $(patsubst "%",%,$(CONFIG_BUILTIN_DTB_NAME))
obj-$(CONFIG_BUILTIN_DTB) += $(BUILTIN_DTB).dtb.o
pbl-$(CONFIG_MACH_BEAGLEBONE) += am335x-bone.dtb.o am335x-boneblack.dtb.o
pbl-$(CONFIG_MACH_BEAGLEBONE) += am335x-bone.dtb.o am335x-boneblack.dtb.o am335x-bone-common.dtb.o
pbl-$(CONFIG_MACH_EFIKA_MX_SMARTBOOK) += imx51-genesi-efika-sb.dtb.o
pbl-$(CONFIG_MACH_EMBEST_RIOTBOARD) += imx6s-riotboard.dtb.o
pbl-$(CONFIG_MACH_FREESCALE_MX51_PDK) += imx51-babbage.dtb.o

9
arch/arm/dts/am335x-bone-common.dts Normal file
View File

@ -0,0 +1,9 @@
/dts-v1/;
#include "am33xx.dtsi"
#include "am335x-bone-common.dtsi"
/ {
model = "TI AM335x BeagleBone";
compatible = "ti,am335x-bone", "ti,am33xx";
};