diff options
| -rw-r--r-- | drivers/soc/qcom/peripheral-loader.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/soc/qcom/peripheral-loader.c b/drivers/soc/qcom/peripheral-loader.c index 2244c64d28af..4d9767b6f8a3 100644 --- a/drivers/soc/qcom/peripheral-loader.c +++ b/drivers/soc/qcom/peripheral-loader.c @@ -583,11 +583,35 @@ static int pil_init_mmap(struct pil_desc *desc, const struct pil_mdt *mdt) return pil_init_entry_addr(priv, mdt); } +struct pil_map_fw_info { + void *region; + struct dma_attrs attrs; + phys_addr_t base_addr; + struct device *dev; +}; + static void pil_release_mmap(struct pil_desc *desc) { struct pil_priv *priv = desc->priv; struct pil_seg *p, *tmp; u64 zero = 0ULL; + u8 __iomem *buf; + + struct pil_map_fw_info map_fw_info = { + .attrs = desc->attrs, + .region = priv->region, + .base_addr = priv->region_start, + .dev = desc->dev, + }; + + void *map_data = desc->map_data ? desc->map_data : &map_fw_info; + + /* Clear memory so that unauthorized ELF code is not left behind */ + buf = desc->map_fw_mem(priv->region_start, (priv->region_end - + priv->region_start), map_data); + pil_memset_io(buf, 0, (priv->region_end - priv->region_start)); + desc->unmap_fw_mem(buf, (priv->region_end - priv->region_start), + map_data); if (priv->info) { __iowrite32_copy(&priv->info->start, &zero, @@ -603,13 +627,6 @@ static void pil_release_mmap(struct pil_desc *desc) #define IOMAP_SIZE SZ_1M -struct pil_map_fw_info { - void *region; - struct dma_attrs attrs; - phys_addr_t base_addr; - struct device *dev; -}; - static void *map_fw_mem(phys_addr_t paddr, size_t size, void *data) { struct pil_map_fw_info *info = data; |