AKASHI-san,
On Thu, Jun 27, 2019 at 10:08 AM AKASHI Takahiro takahiro.akashi@linaro.org wrote:
If U-Boot is loaded and started from TF-A (you need to change SYS_TEXT_BASE to 0x60000000), it will hang up at flash initialization.
If secure mode is off (default, or -machine virt,secure=off) at qemu, it will provide dtb with two flash memory banks: flash@0 { bank-width = <0x4>; reg = <0x0 0x0 0x0 0x4000000 0x0 0x4000000 0x0 0x4000000>; compatible = "cfi-flash"; }; If secure mode is on, on the other hand, qemu provides dtb with 1 bank: flash@0 { bank-width = <0x4>; reg = <0x0 0x4000000 0x0 0x4000000>; compatible = "cfi-flash"; };
As a result, flash_init()/flash_get_size() will eventually fail. With this patch applied, relevant CONFIG values are modified.
NOTE: you will not have to modify SYS_TEXT_BASE any more once Yamada-san's patch[1] is merged.
[1] https://lists.denx.de/pipermail/u-boot/2019-June/374178.html
No. My patch is unrelated.
You are talking about CONFIG_POSITION_INDEPENDENT, and you can enable it irrespective of my work.