diff options
| author | Naresh Kumar Ravulapalli <nareshkumar.ravulapalli@altera.com> | 2025-05-05 18:28:51 -0700 |
|---|---|---|
| committer | Michal Simek <michal.simek@amd.com> | 2025-06-02 09:13:48 +0200 |
| commit | 85f181b194c7d3810db4a0df8ea2386287b26be0 (patch) | |
| tree | 5ce3a7f25ea3bb4ff0749b20fb41968738db1dfa /drivers/fpga | |
| parent | 967eebcd85865b795351bfe4e77399b9f414c6c5 (diff) | |
drivers: fpga: intel_sdm_mb: Flush cache before FPGA configuration
FPGA configuration encounters failure when the cache is not flushed.
Add cache flushing to the memory region that holds the FPGA
configuration bitstream.
Signed-off-by: Naresh Kumar Ravulapalli <nareshkumar.ravulapalli@altera.com>
Link: https://lore.kernel.org/r/20250506012851.30039-1-nareshkumar.ravulapalli@altera.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Diffstat (limited to 'drivers/fpga')
| -rw-r--r-- | drivers/fpga/intel_sdm_mb.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/fpga/intel_sdm_mb.c b/drivers/fpga/intel_sdm_mb.c index 5fe4dbdfd32..a2f3b160a73 100644 --- a/drivers/fpga/intel_sdm_mb.c +++ b/drivers/fpga/intel_sdm_mb.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018 Intel Corporation <www.intel.com> + * Copyright (C) 2025 Altera Corporation <www.altera.com> */ #include <altera.h> @@ -9,6 +10,8 @@ #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/errno.h> #include <linux/intel-smc.h> @@ -738,6 +741,8 @@ 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) { @@ -1023,6 +1028,8 @@ 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); |