From: Bin Meng <bmeng.cn@gmail.com>
Date: Wed, 26 Sep 2018 13:55:16 +0000 (-0700)
Subject: riscv: bootm: Pass mhartid CSR value to kernel
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=ed49ba4dcccb21cee1c32427cf5bbf09521cd8dd;p=u-boot.git

riscv: bootm: Pass mhartid CSR value to kernel

So far this is hardcoded to zero, and we should read the value from
mhartid CSR and pass it to Linux kernel.

Suggested-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Rick Chen <rick@andestech.com>
---

diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c
index 6893108fe3..a7a9fb921b 100644
--- a/arch/riscv/lib/bootm.c
+++ b/arch/riscv/lib/bootm.c
@@ -11,6 +11,7 @@
 #include <image.h>
 #include <u-boot/zlib.h>
 #include <asm/byteorder.h>
+#include <asm/csr.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -57,9 +58,9 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
 	printf("\nStarting kernel ...\n\n");
 
 	cleanup_before_linux();
-	/* TODO: hardcode the hart id to zero for now */
+
 	if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
-		kernel(0, images->ft_addr);
+		kernel(csr_read(mhartid), images->ft_addr);
 
 	/* does not return */