diff options
| author | Sjur Brændeland <sjur.brandeland@stericsson.com> | 2013-02-21 18:15:34 +0100 |
|---|---|---|
| committer | Ohad Ben-Cohen <ohad@wizery.com> | 2013-04-05 08:49:52 +0300 |
| commit | 95f9578163bc25bcbf391420373cf797d5321830 (patch) | |
| tree | 92dab559c6244e5d39354598eb65911b014c5ebe /drivers | |
| parent | f665b2cd3f569a353c0a62b03a95827dd8743e9b (diff) | |
| download | linux-95f9578163bc25bcbf391420373cf797d5321830.tar.bz2 | |
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')
| -rw-r--r-- | drivers/remoteproc/remoteproc_elf_loader.c | 25 | ||||
| -rw-r--r-- | drivers/remoteproc/remoteproc_internal.h | 15 |
2 files changed, 39 insertions, 1 deletions
diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c index 774e5f768bf3..ce283a5b42a1 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 }; diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h index 7bb66482d061..157e762c1571 100644 --- a/drivers/remoteproc/remoteproc_internal.h +++ b/drivers/remoteproc/remoteproc_internal.h @@ -27,7 +27,8 @@ struct rproc; /** * struct rproc_fw_ops - firmware format specific operations. - * @find_rsc_table: finds the resource table inside the firmware image + * @find_rsc_table: find the resource table inside the firmware image + * @find_loaded_rsc_table: find the loaded resouce table * @load: load firmeware to memory, where the remote processor * expects to find it * @sanity_check: sanity check the fw image @@ -37,6 +38,8 @@ struct rproc_fw_ops { struct resource_table *(*find_rsc_table) (struct rproc *rproc, const struct firmware *fw, int *tablesz); + struct resource_table *(*find_loaded_rsc_table)(struct rproc *rproc, + const struct firmware *fw); int (*load)(struct rproc *rproc, const struct firmware *fw); int (*sanity_check)(struct rproc *rproc, const struct firmware *fw); u32 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw); @@ -102,6 +105,16 @@ struct resource_table *rproc_find_rsc_table(struct rproc *rproc, return NULL; } +static inline +struct resource_table *rproc_find_loaded_rsc_table(struct rproc *rproc, + const struct firmware *fw) +{ + if (rproc->fw_ops->find_loaded_rsc_table) + return rproc->fw_ops->find_loaded_rsc_table(rproc, fw); + + return NULL; +} + extern const struct rproc_fw_ops rproc_elf_fw_ops; #endif /* REMOTEPROC_INTERNAL_H */ |