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board: ipq5332: dload register access update

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These changes access TCSR register reading via SCM,
based on feature availability.
Reading will happen either via scm or legacy direct read.

Change-Id: Ia5eb97bce6677843ddea25ce767762e6fd831283
Signed-off-by: Hariharan K <quic_harihk@quicinc.com>
This commit is contained in:
Hariharan K 2024-06-24 11:10:44 +05:30
parent cb261702f3
commit fdec178034
1 changed files with 26 additions and 2 deletions
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28
board/qca/arm/ipq5332/ipq5332.c
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@ -921,8 +921,32 @@ __weak int ipq_get_tz_version(char *version_name, int buf_size)
int ipq_read_tcsr_boot_misc(void)
{
u32 *dmagic = TCSR_BOOT_MISC_REG;
return *dmagic;
u32 dmagic;
int ret;
long feat_avail;
/* The TCSR dload register is protected in latest TZ.
* Old TZ will allow direct read.
* Use the qca_scm_is_feature_available() call to know
* if TZ supports direct or scm read. Based on return
* value, read the TCSR dload register appropriately.
*/
feat_avail = qca_scm_is_feature_available(0x6);
if (feat_avail == 0x401000) {
if (is_scm_armv8()) {
ret = qca_scm_call_read(SCM_SVC_IO, SCM_IO_READ,
TCSR_BOOT_MISC_REG, &dmagic);
if (ret)
return 0;
}
else
return 0;
}
else {
dmagic = *(TCSR_BOOT_MISC_REG);
}
return dmagic;
}
int apps_iscrashed_crashdump_disabled(void)