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soc: qcom: socinfo: Expose image information 

The socinfo driver provides information about version of the various
images loaded in the system. Expose this to user space for debugging
purpose.

Tested-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Vaishali Thakkar <vaishali.thakkar@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Vaishali Thakkar 2019-07-24 04:05:15 +05:30 committed by Bjorn Andersson
parent 9c84c1e786
commit cd23d1405b
1 changed files with 84 additions and 0 deletions
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84
drivers/soc/qcom/socinfo.c
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@ -32,6 +32,39 @@
#define SMEM_HW_SW_BUILD_ID 137
#ifdef CONFIG_DEBUG_FS
#define SMEM_IMAGE_VERSION_BLOCKS_COUNT 32
#define SMEM_IMAGE_VERSION_SIZE 4096
#define SMEM_IMAGE_VERSION_NAME_SIZE 75
#define SMEM_IMAGE_VERSION_VARIANT_SIZE 20
#define SMEM_IMAGE_VERSION_OEM_SIZE 32
/*
* SMEM Image table indices
*/
#define SMEM_IMAGE_TABLE_BOOT_INDEX 0
#define SMEM_IMAGE_TABLE_TZ_INDEX 1
#define SMEM_IMAGE_TABLE_RPM_INDEX 3
#define SMEM_IMAGE_TABLE_APPS_INDEX 10
#define SMEM_IMAGE_TABLE_MPSS_INDEX 11
#define SMEM_IMAGE_TABLE_ADSP_INDEX 12
#define SMEM_IMAGE_TABLE_CNSS_INDEX 13
#define SMEM_IMAGE_TABLE_VIDEO_INDEX 14
#define SMEM_IMAGE_VERSION_TABLE 469
/*
* SMEM Image table names
*/
static const char *const socinfo_image_names[] = {
[SMEM_IMAGE_TABLE_ADSP_INDEX] = "adsp",
[SMEM_IMAGE_TABLE_APPS_INDEX] = "apps",
[SMEM_IMAGE_TABLE_BOOT_INDEX] = "boot",
[SMEM_IMAGE_TABLE_CNSS_INDEX] = "cnss",
[SMEM_IMAGE_TABLE_MPSS_INDEX] = "mpss",
[SMEM_IMAGE_TABLE_RPM_INDEX] = "rpm",
[SMEM_IMAGE_TABLE_TZ_INDEX] = "tz",
[SMEM_IMAGE_TABLE_VIDEO_INDEX] = "video",
};
static const char *const pmic_models[] = {
[0] = "Unknown PMIC model",
[9] = "PM8994",
@ -103,6 +136,13 @@ struct socinfo_params {
u32 hw_plat;
u32 fmt;
};
struct smem_image_version {
char name[SMEM_IMAGE_VERSION_NAME_SIZE];
char variant[SMEM_IMAGE_VERSION_VARIANT_SIZE];
char pad;
char oem[SMEM_IMAGE_VERSION_OEM_SIZE];
};
#endif /* CONFIG_DEBUG_FS */
struct qcom_socinfo {
@ -230,10 +270,37 @@ QCOM_OPEN(build_id, qcom_show_build_id);
QCOM_OPEN(pmic_model, qcom_show_pmic_model);
QCOM_OPEN(pmic_die_rev, qcom_show_pmic_die_revision);
#define DEFINE_IMAGE_OPS(type) \
static int show_image_##type(struct seq_file *seq, void *p) \
{ \
struct smem_image_version *image_version = seq->private; \
seq_puts(seq, image_version->type); \
seq_puts(seq, "\n"); \
return 0; \
} \
static int open_image_##type(struct inode *inode, struct file *file) \
{ \
return single_open(file, show_image_##type, inode->i_private); \
} \
\
static const struct file_operations qcom_image_##type##_ops = { \
.open = open_image_##type, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
}
DEFINE_IMAGE_OPS(name);
DEFINE_IMAGE_OPS(variant);
DEFINE_IMAGE_OPS(oem);
static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
struct socinfo *info)
{
struct smem_image_version *versions;
struct dentry *dentry;
size_t size;
int i;
qcom_socinfo->dbg_root = debugfs_create_dir("qcom_socinfo", NULL);
@ -302,6 +369,23 @@ static void socinfo_debugfs_init(struct qcom_socinfo *qcom_socinfo,
DEBUGFS_ADD(info, build_id);
break;
}
versions = qcom_smem_get(QCOM_SMEM_HOST_ANY, SMEM_IMAGE_VERSION_TABLE,
&size);
for (i = 0; i < ARRAY_SIZE(socinfo_image_names); i++) {
if (!socinfo_image_names[i])
continue;
dentry = debugfs_create_dir(socinfo_image_names[i],
qcom_socinfo->dbg_root);
debugfs_create_file("name", 0400, dentry, &versions[i],
&qcom_image_name_ops);
debugfs_create_file("variant", 0400, dentry, &versions[i],
&qcom_image_variant_ops);
debugfs_create_file("oem", 0400, dentry, &versions[i],
&qcom_image_oem_ops);
}
}
static void socinfo_debugfs_exit(struct qcom_socinfo *qcom_socinfo)