From: Yau Wai Gan yau.wai.gan@intel.com

FPGA configuration encounter failure when the cache is not flushed. Add cache flushing to the memory region that holds the FPGA configuration bitstream.

Signed-off-by: Yau Wai Gan yau.wai.gan@intel.com Signed-off-by: Jit Loon Lim jit.loon.lim@intel.com --- drivers/fpga/intel_sdm_mb.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/drivers/fpga/intel_sdm_mb.c b/drivers/fpga/intel_sdm_mb.c index f5fd9a14c2..72958aac86 100644 --- a/drivers/fpga/intel_sdm_mb.c +++ b/drivers/fpga/intel_sdm_mb.c @@ -9,6 +9,8 @@ #include <watchdog.h> #include <asm/arch/mailbox_s10.h> #include <asm/arch/smc_api.h> +#include <asm/cache.h> +#include <cpu_func.h> #include <linux/delay.h> #include <linux/intel-smc.h>

@@ -121,6 +123,8 @@ int intel_sdm_mb_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size)

debug("Invoking FPGA_CONFIG_START...\n");

+ flush_dcache_range((unsigned long)rbf_data, (unsigned long)(rbf_data + rbf_size)); + ret = invoke_smc(INTEL_SIP_SMC_FPGA_CONFIG_START, &arg, 1, NULL, 0);

if (ret) { @@ -394,6 +398,8 @@ int intel_sdm_mb_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size) u32 resp_len = 2; u32 resp_buf[2];

+ flush_dcache_range((unsigned long)rbf_data, (unsigned long)(rbf_data + rbf_size)); + debug("Sending MBOX_RECONFIG...\n"); ret = mbox_send_cmd(MBOX_ID_UBOOT, MBOX_RECONFIG, MBOX_CMD_DIRECT, 0, NULL, 0, &resp_len, resp_buf);