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Date: Thu, 21 Feb 2013 18:15:34 +0100 From: sjur.brandeland@...ricsson.com To: Ido Yariv <ido@...ery.com>, Ohad Ben-Cohen <ohad@...ery.com> Cc: linux-kernel@...r.kernel.org, Dmitry Tarnyagin <dmitry.tarnyagin@...ricsson.com>, Linus Walleij <linus.walleij@...aro.org>, Erwan Yvin <erwan.yvin@...ricsson.com>, sjur@...ndeland.net, Sjur Brændeland <sjur.brandeland@...ricsson.com> Subject: [PATCHv2 04/10] remoteproc: Parse ELF file to find resource table address From: Sjur Brændeland <sjur.brandeland@...ricsson.com> Add function find_rsc_table_va to firmware ops. This function returns the location of the resource table in shared memory after loading. Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com> --- drivers/remoteproc/remoteproc_elf_loader.c | 17 ++++++++++++++++- drivers/remoteproc/remoteproc_internal.h | 13 +++++++++++++ 2 files changed, 29 insertions(+), 1 deletions(-) diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c index ed12c16..3d6ec76 100644 --- a/drivers/remoteproc/remoteproc_elf_loader.c +++ b/drivers/remoteproc/remoteproc_elf_loader.c @@ -304,9 +304,24 @@ rproc_elf_find_rsc_table(struct rproc *rproc, const struct firmware *fw, return table; } +static struct resource_table *rproc_elf_get_rsctab_va(struct rproc *rproc, + const struct firmware *fw) +{ + struct elf32_shdr *shdr; + + shdr = find_rsc_shdr(&rproc->dev, (struct elf32_hdr *)fw->data, + fw->size); + if (!shdr) + return NULL; + + /* Find resource table in loaded segments */ + 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, .sanity_check = rproc_elf_sanity_check, - .get_boot_addr = rproc_elf_get_boot_addr + .get_boot_addr = rproc_elf_get_boot_addr, + .get_rsctab_va = rproc_elf_get_rsctab_addr }; diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h index 7bb6648..b7372b1 100644 --- a/drivers/remoteproc/remoteproc_internal.h +++ b/drivers/remoteproc/remoteproc_internal.h @@ -32,6 +32,7 @@ struct rproc; * expects to find it * @sanity_check: sanity check the fw image * @get_boot_addr: get boot address to entry point specified in firmware + * @get_rsctab_va: get resouce table address as specified in firmware */ struct rproc_fw_ops { struct resource_table *(*find_rsc_table) (struct rproc *rproc, @@ -40,6 +41,8 @@ struct rproc_fw_ops { 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); + struct resource_table *(*get_rsctab_va)(struct rproc *rproc, + const struct firmware *fw); }; /* from remoteproc_core.c */ @@ -102,6 +105,16 @@ struct resource_table *rproc_find_rsc_table(struct rproc *rproc, return NULL; } +static inline +struct resource_table *rproc_get_rsctab_addr(struct rproc *rproc, + const struct firmware *fw) +{ + if (rproc->fw_ops->get_rsctab_addr) + return rproc->fw_ops->get_rsctab_addr(rproc, fw); + + return NULL; +} + extern const struct rproc_fw_ops rproc_elf_fw_ops; #endif /* REMOTEPROC_INTERNAL_H */ -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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