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doc: Update docs as per latest kernel/u-boot status.

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All dependant patches are merged in U-Boot and Linux kernel now.
Update the unleashed guide to reflect that and fix the documentation
about tftp loading path as well.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Atish Patra 2019-04-11 10:46:27 -07:00 • committed by Anup Patel
parent b2cd5fda61
commit 194dbbe5a1
1 changed files with 12 additions and 10 deletions
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22
docs/platform/sifive_fu540.md
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@ -23,13 +23,8 @@ This will let the board boot only hart1 instead of default 1-4.
Building SiFive Fu540 Platform
-----------------------------
As of this writing, the required Linux kernel and U-Boot patches are not
accepted in mainline. Please follow the below instructions to cherry-pick
them into your repository.
[U-Boot patches](../firmware/payload_uboot.md)
[Linux kernel patches](../firmware/payload_linux.md)
In order to boot SMP Linux in U-Boot, Linux kernel higher than v.5.1-rc1 and
latest U-Boot(at least HEAD should ffb269ab30db or after) should be used.
**Linux Kernel Payload**
@ -54,6 +49,13 @@ Without SMP support enabled in U-Boot:
make PLATFORM=sifive/fu540 FW_PAYLOAD_PATH=<u-boot_build_dir>/u-boot.bin FU540_ENABLED_HART_MASK=0x02
```
Generate the uImage from Linux Image.
```
mkimage -A riscv -O linux -T kernel -C none -a 0x80200000 -e 0x80200000 -n Linux -d \
<linux_build_directory>/arch/riscv/boot/Image \
<linux_build_directory>/arch/riscv/boot/uImage
```
**U-Boot & Linux Kernel as a single payload**
A single monolithic image containing both U-Boot & Linux can also be used if network boot setup is
@ -62,7 +64,7 @@ not available.
1. Generate the uImage from Linux Image.
```
mkimage -A riscv -O linux -T kernel -C none -a 0x80200000 -e 0x80200000 -n Linux -d \
<linux_build_directory>arch/riscv/boot/Image \
<linux_build_directory>/arch/riscv/boot/Image \
<linux_build_directory>/arch/riscv/boot/uImage
```
@ -148,7 +150,7 @@ setenv gatewayip <ipaddress of the network gateway>
5. Load the Linux kernel image from the tftp server.
```
tftpboot ${kernel_addr_r} /sifive/fu540/uImage
tftpboot ${kernel_addr_r} <uImage path in tftpboot directory>
```
6. Load the ramdisk image from the tftp server. This is only required if ramdisk
@ -156,7 +158,7 @@ tftpboot ${kernel_addr_r} /sifive/fu540/uImage
of the kernel or loaded from an external storage by kernel.
```
tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk
tftpboot ${ramdisk_addr_r} <ramdisk path in tftpboot directory>
```
7. Set the boot command-line arguments.