soc: qcom: mdt-loader: Return relocation base

In order to implement support for grabbing core dumps in remoteproc it's
necessary to know the relocated base of the image, as the offsets from
the virtual memory base might not be based on the physical address.

Return the adjusted physical base address to the caller.

Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c
index 08bd8549242a..17b314d9a148 100644
--- a/drivers/soc/qcom/mdt_loader.c
+++ b/drivers/soc/qcom/mdt_loader.c
@@ -83,12 +83,14 @@ EXPORT_SYMBOL_GPL(qcom_mdt_get_size);
  * @mem_region: allocated memory region to load firmware into
  * @mem_phys:   physical address of allocated memory region
  * @mem_size:   size of the allocated memory region
+ * @reloc_base: adjusted physical address after relocation
  *
  * Returns 0 on success, negative errno otherwise.
  */
 int qcom_mdt_load(struct device *dev, const struct firmware *fw,
                   const char *firmware, int pas_id, void *mem_region,
-                  phys_addr_t mem_phys, size_t mem_size)
+                  phys_addr_t mem_phys, size_t mem_size,
+                  phys_addr_t *reloc_base)
 {
         const struct elf32_phdr *phdrs;
         const struct elf32_phdr *phdr;
@@ -192,6 +194,9 @@ int qcom_mdt_load(struct device *dev, const struct firmware *fw,
                         memset(ptr + phdr->p_filesz, 0, phdr->p_memsz - phdr->p_filesz);
         }
 
+        if (reloc_base)
+                *reloc_base = mem_reloc;
+
 out:
         kfree(fw_name);