From: Bin Meng [mailto:bmeng.cn@gmail.com] Sent: Tuesday, September 11, 2018 12:55 PM To: Rick Jian-Zhi Chen(陳建志); U-Boot Mailing List Cc: Lukas Auer Subject: [RESEND PATCH v2 10/15] 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

---

Changes in v2:

• new patch to pass mhartid CSR value to kernel

arch/riscv/lib/bootm.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)

...

diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c index

6893108..a7a9fb9 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 */
  
  

Reviewed-by: Rick Chen rick@andestech.com

...

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2.7.4