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authorSjur Brændeland <sjur.brandeland@stericsson.com>2013-02-21 18:15:34 +0100
committerOhad Ben-Cohen <ohad@wizery.com>2013-04-05 08:49:52 +0300
commit95f9578163bc25bcbf391420373cf797d5321830 (patch)
tree92dab559c6244e5d39354598eb65911b014c5ebe /drivers/remoteproc/remoteproc_elf_loader.c
parentf665b2cd3f569a353c0a62b03a95827dd8743e9b (diff)
downloadop-kernel-dev-95f9578163bc25bcbf391420373cf797d5321830.zip
op-kernel-dev-95f9578163bc25bcbf391420373cf797d5321830.tar.gz
remoteproc: add find_loaded_rsc_table firmware ops
Add function find_loaded_rsc_table to firmware ops. This function returns the location of the resource table in shared memory after loading. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Acked-by: Ido Yariv <ido@wizery.com> [align function name with existing terminology, update commit log] [document new function, rebase patch, small cleanups] Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'drivers/remoteproc/remoteproc_elf_loader.c')
-rw-r--r--drivers/remoteproc/remoteproc_elf_loader.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c
index 774e5f7..ce283a5 100644
--- a/drivers/remoteproc/remoteproc_elf_loader.c
+++ b/drivers/remoteproc/remoteproc_elf_loader.c
@@ -304,9 +304,34 @@ rproc_elf_find_rsc_table(struct rproc *rproc, const struct firmware *fw,
return table;
}
+/**
+ * rproc_elf_find_loaded_rsc_table() - find the loaded resource table
+ * @rproc: the rproc handle
+ * @fw: the ELF firmware image
+ *
+ * This function finds the location of the loaded resource table. Don't
+ * call this function if the table wasn't loaded yet - it's a bug if you do.
+ *
+ * Returns the pointer to the resource table if it is found or NULL otherwise.
+ * If the table wasn't loaded yet the result is unspecified.
+ */
+static struct resource_table *
+rproc_elf_find_loaded_rsc_table(struct rproc *rproc, const struct firmware *fw)
+{
+ struct elf32_hdr *ehdr = (struct elf32_hdr *)fw->data;
+ struct elf32_shdr *shdr;
+
+ shdr = find_table(&rproc->dev, ehdr, fw->size);
+ if (!shdr)
+ return NULL;
+
+ return rproc_da_to_va(rproc, shdr->sh_addr, shdr->sh_size);
+}
+
const struct rproc_fw_ops rproc_elf_fw_ops = {
.load = rproc_elf_load_segments,
.find_rsc_table = rproc_elf_find_rsc_table,
+ .find_loaded_rsc_table = rproc_elf_find_loaded_rsc_table,
.sanity_check = rproc_elf_sanity_check,
.get_boot_addr = rproc_elf_get_boot_addr
};
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