uboot-tools/riscv-bootargs-preboot.patch

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diff --git a/configs/qemu-riscv64_smode_defconfig b/configs/qemu-riscv64_smode_defconfig
index 7e1e5a77..792afee8 100644
--- a/configs/qemu-riscv64_smode_defconfig
+++ b/configs/qemu-riscv64_smode_defconfig
@@ -11,3 +11,7 @@ CONFIG_CMD_BOOTEFI_SELFTEST=y
CONFIG_CMD_NVEDIT_EFI=y
# CONFIG_CMD_MII is not set
CONFIG_OF_PRIOR_STAGE=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyS0 earlycon"
+CONFIG_USE_PREBOOT=y
+CONFIG_PREBOOT="cp.l ${fdtcontroladdr} ${fdt_addr_r} 0x10000;"
diff --git a/configs/sifive_fu540_defconfig b/configs/sifive_fu540_defconfig
index 48865e5f..8a4bc0b7 100644
--- a/configs/sifive_fu540_defconfig
+++ b/configs/sifive_fu540_defconfig
@@ -9,3 +9,5 @@ CONFIG_MISC_INIT_R=y
CONFIG_DISPLAY_CPUINFO=y
CONFIG_DISPLAY_BOARDINFO=y
CONFIG_OF_PRIOR_STAGE=y
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttySIF0 earlycon"