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5776610e9e
u-boot-brain/arch/arm/include/asm
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Andre Przywara 5776610e9e sunxi: store DRAM size in SPL header 
At the moment we rely on the infamous get_ram_size() function to learn
the actual DRAM size in U-Boot proper. This function has two issues:
1) It only works if the DRAM size is a power of two. We start to see
boards which have 3GB of (usable) DRAM, so this does not fit anymore.
2) As U-Boot has no notion of reserved memory so far, it will happily
ride through the DRAM, possibly stepping on secure-only memory. This
could be a region of DRAM reserved for OP-TEE or some other secure
payload, for instance. It will most likely crash in that case.

As the SPL DRAM init routine has very accurate knowledge of the actual
DRAM size, lets propagate this wisdom to U-Boot proper.
We re-purpose a currently reserved word in our SPL header for that.
The SPL itself stores the detected DRAM size there, and bumps the SPL
header version number in that case. U-Boot proper checks for a valid
SPL header and a high enough version number, then uses the DRAM size
from there. If the SPL header field is not sufficient, we fall back to
the old DRAM scanning routine.

Part of the DRAM might be present and probed by SPL, but not accessible
by the CPU. They're restricted in the main U-Boot binary, when accessing
the DRAM size from SPL header.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2018-10-29 20:41:15 +05:30
..
arch-am33xx SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
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arch-armv7 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-aspeed watchdog: aspeed: restore default value of reset_mask 2018-10-22 09:18:49 -04:00
arch-bcm235xx SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
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arch-fsl-layerscape armv8: ls1043a: add icid setup support 2018-09-27 08:58:15 -07:00
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arch-lpc32xx Convert CONFIG_FLASH_CFI_DRIVER et al to Kconfig 2018-10-19 19:19:50 -04:00
arch-ls102xa armv7: ls102xa: Disable QE before enter deep sleep 2018-09-27 10:01:28 -07:00
arch-meson meson: use the clock driver 2018-06-19 07:31:47 -04:00
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arch-mx6 imx: imx6ull: fix pinmux input_val for uart5 rx pin 2018-09-14 15:22:52 +02:00
arch-mx7 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-mx7ulp imx_lpi2c: Update lpi2c driver to support imx8 2018-07-12 11:08:41 +02:00
arch-mx8m SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-mx25 watchdog: mx25: use the imx_watchdog driver for mx25 2018-09-04 08:47:23 +02:00
arch-mx27 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-mx31 mx31: Convert MX31_HCLK_FREQ and MX31_CLK32 to Kconfig. 2018-05-17 12:02:28 +02:00
arch-mx35 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-mxs SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-omap3 mmc: omap_hsmmc: Fix pbias for omap3_logic to enable CD pin 2018-09-25 21:49:18 -04:00
arch-omap4 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
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arch-orion5x SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-owl clk: Add Actions Semi OWL clock support 2018-07-09 15:25:31 -04:00
arch-pxa SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-rockchip usb: rockchip: implement K_FW_LBA_ERASE_10 command 2018-08-08 22:22:07 +02:00
arch-s32v234 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-sa1100 Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
arch-spear arm: spear: fix enabling of SSP2 clock 2018-09-25 21:49:18 -04:00
arch-stih410 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
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arch-stv0991 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-sunxi sunxi: store DRAM size in SPL header 2018-10-29 20:41:15 +05:30
arch-tegra SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-tegra20 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-tegra30 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-tegra114 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-tegra124 ARM: tegra: implement RAM repair 2018-07-26 13:15:29 -07:00
arch-tegra186 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-tegra210 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-vf610 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
arch-zynqmp arm64: zynqmp: Add new command for TCM initialization 2018-10-16 16:53:24 +02:00
armv8 SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
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kona-common SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
mach-imx arm, imx6: add alternative PAD_CTL_DSE constants 2018-07-23 10:57:39 +02:00
proc-armv ARM: define MON_MODE 2018-07-26 13:15:30 -07:00
ti-common SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
armv7_mpu.h arm: v7R: Add support for MPU 2018-05-07 15:53:29 -04:00
armv7.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
armv7m.h arm: armv7m: clean up armv7m unified code compilation 2018-09-10 21:19:33 -04:00
assembler.h arm: Migrate SYS_THUMB_BUILD to Kconfig, introduce SPL_SYS_THUMB_BUILD 2017-03-18 20:28:01 -04:00
atomic.h ARM: use asm-generic/atomic.h 2018-09-25 21:49:18 -04:00
barriers.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
bitops.h arm/arm64: bitops: fix find_next_zero_bit to be compat with arm64 2018-07-19 16:31:36 -04:00
boot0-linux-kernel-header.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
bootm.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
byteorder.h armv8: Use __aarch64__ rather than CONFIG_ARM64 in some cases 2014-01-10 10:10:23 +01:00
cache.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
config.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
davinci_rtc.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
dma-mapping.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
ehci-omap.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
emif.h cmd: ti: Generalize cmd_ddr3 command 2018-01-19 15:49:26 -05:00
fsl_secure_boot.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
gic.h arm64 patch: gicv3 support 2014-04-08 00:15:12 +02:00
global_data.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
gpio.h gpio: do not include <asm/arch/gpio.h> for ARCH_K3 2018-09-11 08:32:55 -04:00
hardware.h Move architecture-specific includes to arch/$ARCH/include/asm 2010-04-13 09:13:12 +02:00
io.h arm: Use asm-generic/io.h 2017-10-02 21:52:20 -04:00
linkage.h arm: adapt asm/linkage.h from Linux 2012-05-15 08:31:26 +02:00
mach-types.h arm: Re-sync with full list of MACH_TYPE_xxx values 2017-01-28 14:04:20 -05:00
macro.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
memory.h Various, accumulated typos collected from around the tree. 2016-10-06 20:57:40 -04:00
omap_common.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
omap_gpio.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
omap_mmc.h mmc: omap_mmc: Remove invert references 2018-09-29 08:06:56 -04:00
omap_musb.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
omap_sec_common.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
opcodes-sec.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
opcodes-virt.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
opcodes.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
pl310.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
posix_types.h armv8: Use __aarch64__ rather than CONFIG_ARM64 in some cases 2014-01-10 10:10:23 +01:00
processor.h Remove ${objtree}/include/asm/proc/ link 2014-06-11 16:27:05 -04:00
psci.h psci: arm: remove armv7 function psci_save_target_pc 2018-05-07 11:52:55 -04:00
ptrace.h Remove ${objtree}/include/asm/proc/ link 2014-06-11 16:27:05 -04:00
sections.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
secure.h ARMv8: Setup PSCI memory and device tree 2016-12-15 11:57:51 -08:00
setjmp.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
setup.h Various, accumulated typos collected from around the tree. 2016-10-06 20:57:40 -04:00
spin_table.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
spl.h arm: K3: am654: Add support for boot device detection 2018-09-11 08:32:55 -04:00
string.h ARM: revive CONFIG_USE_ARCH_MEMCPY/MEMSET for UniPhier and Tegra 2016-12-27 11:24:15 -05:00
system.h arm: v7: Kconfig: Rename CPU_V7 as CPU_V7A 2018-05-07 15:53:24 -04:00
types.h arch: types.h: factor out fixed width typedefs to int-ll64.h 2018-09-10 20:48:16 -04:00
u-boot-arm.h arm: remove duplicated prototypes in u-boot.arm.h 2018-10-10 13:35:10 -04:00
u-boot.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
unaligned.h arm64: core support 2014-01-09 16:08:44 +01:00
unified.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
utils.h SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00