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2018-05-29riscv: cpu: nx25: Rename as ax25Rick Chen
Andes has rearranged the product combinations. nx25 and ax25 both are RISC-V architecture cpu core. But ax25 has MMU unit inside, and nx25 is not. Cpu nx25 and platform ae250 are arranged in pairs. Cpu ax25 and platform ae350 are arranged in pairs. This patch will rename nx25 as ax25 ae250 as ae350 nx25-ae250 as ax25-ae350 including filename, variable, string and definition. Then u-boot can boot linux kernel in ae350 platform reasonably. Signed-off-by: Rick Chen <rick@andestech.com> Signed-off-by: Rick Chen <rickchen36@gmail.com> Cc: Greentime Hu <green.hu@gmail.com>
2018-05-29efi_loader: Enable RISC-V supportRick Chen
We have almost all pieces needed to support RISC-V UEFI binaries in place already. The only missing piece are ELF relocations for runtime code and data. This patch adds respective support in the linker script and the runtime relocation code. It also allows users to enable the EFI_LOADER configuration switch on RISC-V platforms. Signed-off-by: Alexander Graf <agraf@suse.de>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-03-30riscv: ae250: Support DT provided by the board at runtimeRick Chen
Enable CONFIG_OF_BOAD to support delivery dtb to u-boot at run time instead of embedded. There are two methods to delivery dtb. 1 Pass from loader: When u-boot boot from RAM, gdb or loader can pass dtb via a2 to u-boot dynamically. Of course gdb or loader shall be in charge of dtb delivery. 2 Configure CONFIG_SYS_FDT_BASE: It can be configured as RAM or ROM base statically, no mater u-boot boot from RAM or ROM. If it was configured as ROM base, dtb can be burned into ROM(spi flash) by spi driver. Meanwhile remove CONFIG_SKIP_LOWLEVEL_INIT which is useless in nx25-ae250 configuration. Signed-off-by: Rick Chen <rick@andestech.com> Signed-off-by: Rick Chen <rickchen36@gmail.com> Cc: Greentime Hu <green.hu@gmail.com>
2018-01-12riscv: cpu: Add nx25 to support RISC-VRick Chen
Add Andes nx25 cpu core (called AndesStar V5) to support RISC-V arch Verifications: 1. startup and relocation ok. 2. boot from rom or ram both ok. 2. timer driver ok. 3. uart driver ok 4. mmc driver ok 5. spi driver ok. 6. 32/64 bit both ok. Detail verification message please see doc/README.ae250. Signed-off-by: Rick Chen <rick@andestech.com> Signed-off-by: Rick Chen <rickchen36@gmail.com> Signed-off-by: Greentime Hu <green.hu@gmail.com> Cc: Padmarao Begari <Padmarao.Begari@microsemi.com>