Re: [U-Boot] FW: [PATCH 18/30] riscv: invalidate the instruction cache before jumping to Linux

From: Lukas Auer [mailto:lukas.auer@aisec.fraunhofer.de] Sent: Saturday, October 20, 2018 6:08 AM To: u-boot@lists.denx.de Cc: Bin Meng; Lukas Auer; Greentime Hu; Alexander Graf; Rick Jian-Zhi Chen(陳建志) Subject: [PATCH 18/30] riscv: invalidate the instruction cache before jumping to Linux

Signed-off-by: Lukas Auer lukas.auer@aisec.fraunhofer.de

arch/riscv/lib/bootm.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/lib/bootm.c b/arch/riscv/lib/bootm.c index a7a9fb921b..bc1d4b2864 100644 --- a/arch/riscv/lib/bootm.c +++ b/arch/riscv/lib/bootm.c @@ -38,6 +38,7 @@ int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images) return 1;

    kernel = (void (*)(ulong, void *))images->ep;

•   invalidate_icache_all();
  

Hi Likas

I wull use cleanup_before_linux() which is in cpu.c as below

int cleanup_before_linux(void) { disable_interrupts();

/* turn off I/D-cache */ cache_flush(); icache_disable(); dcache_disable();

return 0; }

and cache_flush() in cache.c as below

void cache_flush(void) { invalidate_icache_all(); flush_dcache_all(); }

Rick

    bootstage_mark(BOOTSTAGE_ID_RUN_OS);

-- 2.17.2