mirror of
https://github.com/u-boot/u-boot.git
synced 2024-12-02 09:03:27 +08:00
f8a1b33889
U-boot is intended to replace linux kernel in android boot image(ABL), and it's FIT payload to replace initramfs file. The boot process is similar to boot image with linux: - android bootloader (ABL) unpacks android boot image - ABL sets `linux,initrd-start property` in chosen node in unpacked FDT - ABL sets x0 register to FDT address, and passes control to u-boot - u-boot reads x0 register, and stores it in `prevbl_fdt_addr` env variable - u-boot reads `linux,initrd-start` property, and stores it in `prevbl_initrd_start_addr` In this way, u-boot bootcmd relies on `prevbl_initrd_start_addr` env variable, and boils down to `bootm $prevbl_initrd_start_addr`. If more control on boot process is desired, pack a boot script in FIT image, and put it to default configuration What done: - strip unneeded config options - add FIT image support - add framebuffer node, u-boot logo and video console - increase LMB_MAX_REGIONS, to store all linux dtb reserved memory regions - add linux kernel image header Uart driver causes hang, when u-boot is used in android boot image instead of linux. Temporary disable console driver, until investigated and fixed. Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com> Cc: Ramon Fried <rfried.dev@gmail.com> |
||
---|---|---|
.. | ||
actions | ||
advantech | ||
allwinner | ||
amlogic | ||
AndesTech | ||
apple | ||
armltd | ||
atmel | ||
broadcom | ||
congatec | ||
coreboot | ||
emulation | ||
highbank | ||
intel | ||
kontron | ||
microchip | ||
nokia | ||
nxp | ||
openpiton | ||
qualcomm | ||
rockchip | ||
samsung | ||
siemens | ||
sifive | ||
sipeed | ||
socionext | ||
st | ||
ste | ||
tbs | ||
ti | ||
toradex | ||
variscite | ||
xen | ||
xilinx | ||
index.rst |