mirror of
https://github.com/brain-hackers/u-boot-brain
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35b65dd8ef
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to. This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value. Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.
Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g. COLD vs WARM resets). As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).
To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely. Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.
This transformation was done with the following coccinelle patch:
@@
expression argvalue;
@@
- reset_cpu(argvalue)
+ reset_cpu()
@@
identifier argname;
type argtype;
@@
- reset_cpu(argtype argname)
+ reset_cpu(void)
{ ... }
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
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| .. | ||
| imx8qm_mek.c | ||
| imximage.cfg | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
| spl.c | ||
| uboot-container.cfg | ||
U-Boot for the NXP i.MX8QM EVK board Quick Start =========== - Build the ARM Trusted firmware binary - Get scfw_tcm.bin and ahab-container.img - Build U-Boot - Flash the binary into the SD card - Boot Get and Build the ARM Trusted firmware ====================================== $ git clone https://source.codeaurora.org/external/imx/imx-atf $ cd imx-atf/ $ git checkout origin/imx_4.14.78_1.0.0_ga -b imx_4.14.78_1.0.0_ga $ make PLAT=imx8qm bl31 Get scfw_tcm.bin and ahab-container.img ============================== $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-sc-firmware-1.1.bin $ chmod +x imx-sc-firmware-1.1.bin $ ./imx-sc-firmware-1.1.bin $ wget https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.0.bin $ chmod +x firmware-imx-8.0.bin $ ./firmware-imx-8.0.bin Copy the following binaries to U-Boot folder: $ cp imx-atf/build/imx8qm/release/bl31.bin . $ cp u-boot/u-boot.bin . Copy the following firmwares U-Boot folder : $ cp firmware-imx-7.6/firmware/seco/ahab-container.img . $ cp imx-sc-firmware-0.7/mx8qm-mek-scfw-tcm.bin . Build U-Boot ============ $ make imx8qm_mek_defconfig $ make flash.bin Flash the binary into the SD card ================================= Burn the flash.bin binary to SD card offset 32KB: $ sudo dd if=flash.bin of=/dev/sd[x] bs=1024 seek=32 Boot ==== Set Boot switch SW2: 1100.