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u-boot/arch/arm
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Simon Glass a55014d09b Makefile: Allow LTO to be disabled for a build 
LTO (Link-Time Optimisation) is an very useful feature which can
significantly reduce the size of U-Boot binaries. So far it has been
made available for selected ARM boards and sandbox.

However, incremental builds are much slower when LTO is used. For example,
an incremental build of sandbox takes 2.1 seconds on my machine, but 6.7
seconds with LTO enabled.

Add a NO_LTO parameter to the build, similar to NO_SDL, so it can be
disabled during development if needed, for faster builds.

Add some documentation about LTO while we are here.

Signed-off-by: Simon Glass <sjg@chromium.org>
2022-09-02 16:20:11 -04:00
..
cpu layerscape: Disable CONFIG_FMAN_ENET on *aqds* platforms 2022-08-20 21:18:15 -04:00
dts arm: dts: qcom: Sync pinctrl DT nodes with Linux bindings 2022-08-26 10:55:46 -04:00
include Makefile: Allow LTO to be disabled for a build 2022-09-02 16:20:11 -04:00
lib arm: ARMv4 assembly compatibility 2022-09-02 13:40:42 -04:00
mach-apple arm: apple: Add initial Apple M2 support 2022-07-25 09:38:47 -04:00
mach-aspeed aspeed/spl: Remove OVERLAY from linker script 2022-07-06 14:32:00 -04:00
mach-at91 arm: Remove snapper9260 board 2022-08-12 16:10:50 -04:00
mach-bcm283x doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
mach-bcmbca arm: bcmbca: introduce the bcmbca architecture and 47622 SOC 2022-06-10 13:37:32 -04:00
mach-bcmstb
mach-cortina
mach-davinci arm: Remove unused references to CONFIG_SOC_DM* 2022-07-25 14:57:27 -04:00
mach-exynos arm: samsung: Migrate a number of symbols to Kconfig 2022-06-28 17:04:37 -04:00
mach-highbank
mach-hpe ARM: hpe: gxp: add core support 2022-06-22 21:30:04 -04:00
mach-imx arm: Remove warp board 2022-08-20 22:45:00 -04:00
mach-integrator arm: integrator: Migrate platform-specific options and cleanup armcoremodule.h 2022-04-08 09:05:19 -04:00
mach-ipq40xx arm: dts: qcom: Sync pinctrl DT nodes with Linux bindings 2022-08-26 10:55:46 -04:00
mach-k3 arm: mach-k3: security: Remove certificate if detected on GP device 2022-08-04 15:32:20 -04:00
mach-keystone i2c: Remove non-DM_I2C support from davinci_i2c.c 2022-07-08 17:57:34 -04:00
mach-kirkwood board: lsxl: make last resort recovery more reliable 2022-08-23 12:40:00 +02:00
mach-lpc32xx net: lpc32xx_eth.c ethernet driver 2022-08-20 21:18:15 -04:00
mach-mediatek
mach-meson ARM: meson: fixup error on efuse commands return 2022-08-08 09:56:38 +02:00
mach-mvebu Convert CONFIG_SYS_L2_PL310 to Kconfig 2022-09-01 17:18:42 -04:00
mach-nexell video: Drop references to CONFIG_VIDEO et al 2022-03-28 20:17:07 +02:00
mach-npcm arm: nuvoton: Add support for Nuvoton NPCM750 BMC 2022-05-05 09:28:47 -04:00
mach-octeontx Convert CONFIG_SYS_PCI_64BIT to Kconfig 2021-12-27 16:20:17 -05:00
mach-octeontx2 Convert CONFIG_SYS_PCI_64BIT to Kconfig 2021-12-27 16:20:17 -05:00
mach-omap2 Convert CONFIG_SYS_L2_PL310 to Kconfig 2022-09-01 17:18:42 -04:00
mach-orion5x arm: Remove edminiv2 board 2022-08-20 21:18:15 -04:00
mach-owl
mach-qemu
mach-rmobile arm: Remove kzm9g board 2022-08-20 21:18:15 -04:00
mach-rockchip Merge branch 'next' 2022-07-11 14:58:57 -04:00
mach-s5pc1xx doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
mach-snapdragon arm: dts: qcom: Sync pinctrl DT nodes with Linux bindings 2022-08-26 10:55:46 -04:00
mach-socfpga socfpga: arria10: Allow dcache_enable before relocation 2022-07-01 14:57:15 +08:00
mach-sti stm32mp1: fix reference for STMicroelectronics 2022-06-17 14:12:27 +02:00
mach-stm32 configs: stm32f746-disco: Migrate SPL flags to defconfig 2022-05-10 13:56:12 +02:00
mach-stm32mp stm32mp: add support of STM32MP13x Rev.Y 2022-07-12 11:47:34 +02:00
mach-sunxi sunxi: Move INITIAL_USB_SCAN_DELAY to driver Kconfig 2022-07-18 23:48:09 +01:00
mach-tegra Convert CONFIG_TEGRA_GPU to Kconfig 2022-06-28 17:03:31 -04:00
mach-u8500
mach-uniphier serial: Replace CONFIG_DEBUG_UART_BASE by CONFIG_VAL(DEBUG_UART_BASE) 2022-06-06 18:01:21 -04:00
mach-versal spi: cadence_qspi: Enable apb linear mode for apb read & write operations 2022-06-29 16:00:31 +02:00
mach-versatile
mach-zynq fpga: xilinx: add bitstream flags to driver desc 2022-07-26 09:34:21 +02:00
mach-zynqmp mailbox: zynqmp: Move struct zynqmp_ipi_msg from sys_proto.h 2022-07-26 08:36:20 +02:00
mach-zynqmp-r5 Convert CONFIG_CPU_FREQ_HZ to Kconfig 2021-12-27 16:20:19 -05:00
thumb1/include/asm/proc-armv
config.mk Makefile: Allow LTO to be disabled for a build 2022-09-02 16:20:11 -04:00
Kconfig ARM: cache: Allow SPL to build cache-pl310.c 2022-09-01 17:18:42 -04:00
Kconfig.debug
Makefile arm: makefile: cleanup mach-imx usage 2022-07-26 11:29:00 +02:00