diff options
Diffstat (limited to 'target/linux/ipq40xx/patches-5.15/420-firmware-qcom-scm-disable-SDI.patch')
| -rw-r--r-- | target/linux/ipq40xx/patches-5.15/420-firmware-qcom-scm-disable-SDI.patch | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/target/linux/ipq40xx/patches-5.15/420-firmware-qcom-scm-disable-SDI.patch b/target/linux/ipq40xx/patches-5.15/420-firmware-qcom-scm-disable-SDI.patch new file mode 100644 index 0000000000..eb474500b1 --- /dev/null +++ b/target/linux/ipq40xx/patches-5.15/420-firmware-qcom-scm-disable-SDI.patch @@ -0,0 +1,47 @@ +--- a/drivers/firmware/qcom_scm.c ++++ b/drivers/firmware/qcom_scm.c +@@ -404,6 +404,20 @@ static int __qcom_scm_set_dload_mode(str + return qcom_scm_call_atomic(__scm->dev, &desc, NULL); + } + ++static int __qcom_scm_disable_sdi(struct device *dev) ++{ ++ struct qcom_scm_desc desc = { ++ .svc = QCOM_SCM_SVC_BOOT, ++ .cmd = QCOM_SCM_BOOT_CONFIG_SDI, ++ .arginfo = QCOM_SCM_ARGS(2), ++ .args[0] = 1 /* 1: disable watchdog debug */, ++ .args[1] = 0 /* 0: disable SDI */, ++ .owner = ARM_SMCCC_OWNER_SIP, ++ }; ++ ++ return qcom_scm_call(__scm->dev, &desc, NULL); ++} ++ + static void qcom_scm_set_download_mode(bool enable) + { + bool avail; +@@ -1256,6 +1270,13 @@ static int qcom_scm_probe(struct platfor + if (download_mode) + qcom_scm_set_download_mode(true); + ++ /* ++ * Factory firmware leaves SDI (a debug interface), which prevents ++ * clean reboot. ++ */ ++ if (of_machine_is_compatible("google,wifi")) ++ __qcom_scm_disable_sdi(__scm->dev); ++ + return 0; + } + +--- a/drivers/firmware/qcom_scm.h ++++ b/drivers/firmware/qcom_scm.h +@@ -77,6 +77,7 @@ extern int scm_legacy_call(struct device + #define QCOM_SCM_SVC_BOOT 0x01 + #define QCOM_SCM_BOOT_SET_ADDR 0x01 + #define QCOM_SCM_BOOT_TERMINATE_PC 0x02 ++#define QCOM_SCM_BOOT_CONFIG_SDI 0x09 + #define QCOM_SCM_BOOT_SET_DLOAD_MODE 0x10 + #define QCOM_SCM_BOOT_SET_REMOTE_STATE 0x0a + #define QCOM_SCM_FLUSH_FLAG_MASK 0x3 |