diff options
| author | Chris Lew <clew@codeaurora.org> | 2017-10-12 00:29:07 +0300 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2017-10-12 07:48:27 +0300 |
| commit | dcc0967dd776cefe04856726a39195c1c5edbd2c (patch) | |
| tree | 0eb91ea7dd94f6c2d2cb726444cfc75139df897c /drivers/soc/qcom | |
| parent | a216000f0140f415cec96129f777b5234c9d142f (diff) | |
| download | linux-dcc0967dd776cefe04856726a39195c1c5edbd2c.tar.xz | |
soc: qcom: smem: Read version from the smem header
The SMEM header structure includes the version information. Read the
version directly from the header instead of getting an item from the
global heap.
Signed-off-by: Chris Lew <clew@codeaurora.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'drivers/soc/qcom')
| -rw-r--r-- | drivers/soc/qcom/smem.c | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/drivers/soc/qcom/smem.c b/drivers/soc/qcom/smem.c index db04c45d4132..540322ae409e 100644 --- a/drivers/soc/qcom/smem.c +++ b/drivers/soc/qcom/smem.c @@ -63,13 +63,12 @@ */ /* - * Item 3 of the global heap contains an array of versions for the various - * software components in the SoC. We verify that the boot loader version is - * what the expected version (SMEM_EXPECTED_VERSION) as a sanity check. + * The version member of the smem header contains an array of versions for the + * various software components in the SoC. We verify that the boot loader + * version is a valid version as a sanity check. */ -#define SMEM_ITEM_VERSION 3 -#define SMEM_MASTER_SBL_VERSION_INDEX 7 -#define SMEM_EXPECTED_VERSION 11 +#define SMEM_MASTER_SBL_VERSION_INDEX 7 +#define SMEM_EXPECTED_VERSION 11 /* * The first 8 items are only to be allocated by the boot loader while @@ -604,19 +603,11 @@ EXPORT_SYMBOL(qcom_smem_get_free_space); static int qcom_smem_get_sbl_version(struct qcom_smem *smem) { + struct smem_header *header; __le32 *versions; - size_t size; - - versions = qcom_smem_get_global(smem, SMEM_ITEM_VERSION, &size); - if (IS_ERR(versions)) { - dev_err(smem->dev, "Unable to read the version item\n"); - return -ENOENT; - } - if (size < sizeof(unsigned) * SMEM_MASTER_SBL_VERSION_INDEX) { - dev_err(smem->dev, "Version item is too small\n"); - return -EINVAL; - } + header = smem->regions[0].virt_base; + versions = header->version; return le32_to_cpu(versions[SMEM_MASTER_SBL_VERSION_INDEX]); } |