diff options
| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-08-15 01:46:17 +0300 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2017-10-12 07:48:27 +0300 |
| commit | 4e659dbe2d02a56ca0df25c77e099760252a329c (patch) | |
| tree | d41bd3ca1e79a6c1b19a637ea9f34030ae7deb91 /drivers/firmware/qcom_scm-32.c | |
| parent | e691b48dcc7553b423bcbc7ddcd9f51698d093b1 (diff) | |
| download | linux-4e659dbe2d02a56ca0df25c77e099760252a329c.tar.xz | |
firmware: qcom: scm: Expose secure IO service
The secure IO service provides operations for reading and writing secure
memory from non-secure mode, expose this API through SCM.
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'drivers/firmware/qcom_scm-32.c')
| -rw-r--r-- | drivers/firmware/qcom_scm-32.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c index 93e3b96b6dfa..11fdb1584823 100644 --- a/drivers/firmware/qcom_scm-32.c +++ b/drivers/firmware/qcom_scm-32.c @@ -596,3 +596,21 @@ int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size, { return -ENODEV; } + +int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, + unsigned int *val) +{ + int ret; + + ret = qcom_scm_call_atomic1(QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ, addr); + if (ret >= 0) + *val = ret; + + return ret < 0 ? ret : 0; +} + +int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val) +{ + return qcom_scm_call_atomic2(QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE, + addr, val); +} |