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-rw-r--r--docs/platform/sifive_fu540.md6
1 files changed, 5 insertions, 1 deletions
diff --git a/docs/platform/sifive_fu540.md b/docs/platform/sifive_fu540.md
index 95a4326..286abdd 100644
--- a/docs/platform/sifive_fu540.md
+++ b/docs/platform/sifive_fu540.md
@@ -161,9 +161,13 @@ tftpboot ${ramdisk_addr_r} /sifive/fu540/uRamdisk
7. Set the boot command-line arguments.
```
-setenv bootargs "root=/dev/ram rw console=ttySIF0 earlycon=sbi"
+setenv bootargs "root=<root partition> rw console=ttySIF0 earlycon=sbi"
```
+N.B. root partition should point to
+ ** /dev/ram ** - If a ramdisk is used
+ ** root=/dev/mmcblk0pX ** - If a rootfs is already on some other partition of sdcard
+
8. Now boot into Linux.
```