rockchip: rk3576: Add RAM-loaded defconfig for Maskrom boot development #13
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| CONFIG_BOOTMETH_ANDROID=y | ||
| CONFIG_BOOTCOMMAND="setenv fastboot_addr_r 0x49000000; setenv autoload no; setenv fastboot.fb_spwn usb; fastboot -l ${fastboot_addr_r} usb 0" | ||
| CONFIG_USE_PREBOOT=y | ||
| CONFIG_PREBOOT="dvfs repeat; dvfs max; scsi scan" |
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Should this also initialize MMC devices? Does it work if the DVFS driver is not available?
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This commit with preboot command supposed to be applied on top of DVFS driver PR. MMC doesn't require initialization -- probing mmc historically is a part of mmc commands.
| CONFIG_PCI=y | ||
| CONFIG_DEBUG_UART=y | ||
| CONFIG_SKIP_RELOCATE=y | ||
| CONFIG_SPL_LOAD_FIT_ADDRESS=0x40020000 |
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I'm sceptical of this being a separate symbol from your SPL padding in the image. What if they become different offsets? Can't one reference the other instead?
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This is what I was asking about. To have a config option to calculate offset in binman configuration.
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Do you need a separate option for that? Your config symbols become preprocessor defines, so you can probably just subtract the RAM start address from the FIT address, and the preprocessor will insert the value into your .dtsi for binman
Add a new defconfig (evb-rk3576-ram_defconfig) for running U-Boot directly from RAM when loaded via Rockchip Maskrom USB download mode. Key configuration for RAM execution: - CONFIG_TEXT_BASE=0x41000000: Load address for RAM execution - CONFIG_SKIP_RELOCATE=y: Skip relocation since already in final location - CONFIG_SPL_RAM_DEVICE=y: SPL expects to be loaded to RAM - CONFIG_SPL_LOAD_FIT_ADDRESS=0x40020000: FIT image load address - BOOTCOMMAND starts fastboot USB mode immediately - PREBOOT sets the max OPP via DVFS and trigger SCSI scan Enable thermal management and DVFS: - DM_THERMAL and ROCKCHIP_THERMAL for temperature monitoring - DM_DVFS and ROCKCHIP_WTEMP_DVFS for dynamic voltage/frequency scaling - Combined with 64KB EP buffer, DVFS at max frequency achieves fastboot USB3 transfer rates up to 240 MB/s Change-Id: ee1833fd-8d39-4ad2-962f-1c76eb4fb2c1 Signed-off-by: Anton Burticica <mouse@ya.ru>
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Add a new defconfig (evb-rk3576-ram_defconfig) for running U-Boot directly from RAM when loaded via Rockchip Maskrom USB download mode.
Key configuration for RAM execution:
Enable thermal management and DVFS:
Change-Id: ee1833fd-8d39-4ad2-962f-1c76eb4fb2c1