The device tree passed by the prior boot stage can be used to boot
Linux. Store it as environment variable "prior_stage_dtb", so that it
can be used as part of the boot command.
Signed-off-by: Lukas Auer <lukas.a...@aisec.fraunhofer.de>
---
Changes in v2:
- New patch
arch/Kconfig | 1 +
arch/riscv/cpu/cpu.c | 7 +++++++
arch/riscv/include/asm/u-boot-riscv.h | 1 +
3 files changed, 9 insertions(+)
diff --git a/arch/Kconfig b/arch/Kconfig
index 9fdd2f7e66..883e4a9308 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -74,6 +74,7 @@ config RISCV
imply MTD
imply TIMER
imply CMD_DM
+ imply ARCH_MISC_INIT
config SANDBOX
bool "Sandbox"
diff --git a/arch/riscv/cpu/cpu.c b/arch/riscv/cpu/cpu.c
index d9f820c44c..e06a8c6bab 100644
--- a/arch/riscv/cpu/cpu.c
+++ b/arch/riscv/cpu/cpu.c
@@ -53,3 +53,10 @@ int print_cpuinfo(void)
return 0;
}
+
+int arch_misc_init(void)
+{
+ env_set_hex("prior_stage_dtb", prior_stage_fdt_address);
+
+ return 0;
+}
diff --git a/arch/riscv/include/asm/u-boot-riscv.h
b/arch/riscv/include/asm/u-boot-riscv.h
index 49febd5881..937b2682dc 100644
--- a/arch/riscv/include/asm/u-boot-riscv.h
+++ b/arch/riscv/include/asm/u-boot-riscv.h
@@ -13,6 +13,7 @@
/* cpu/.../cpu.c */
int cleanup_before_linux(void);
+int arch_misc_init(void);
/* board/.../... */
int board_init(void);
--
2.17.2
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