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-rw-r--r--arch/arm/mach-imx/imx8/Kconfig13
-rw-r--r--arch/arm/mach-imx/imx8/Makefile1
-rw-r--r--arch/arm/mach-imx/imx8/snvs_security_sc.c923
3 files changed, 937 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/imx8/Kconfig b/arch/arm/mach-imx/imx8/Kconfig
index 5827ab334f..1f8add015f 100644
--- a/arch/arm/mach-imx/imx8/Kconfig
+++ b/arch/arm/mach-imx/imx8/Kconfig
@@ -90,4 +90,17 @@ source "board/toradex/apalis-imx8/Kconfig"
source "board/toradex/colibri-imx8x/Kconfig"
source "board/siemens/capricorn/Kconfig"
+config IMX_SNVS_SEC_SC
+ bool "Support SNVS configuration"
+ help
+ Allow to configure the SNVS via SCU API to configure tampers and secure
+ violation.
+
+config IMX_SNVS_SEC_SC_AUTO
+ bool "Support SNVS configuration command"
+ depends on IMX_SNVS_SEC_SC
+ help
+ This configuration will apply the selected configurations automatically
+ at boot.
+
endif
diff --git a/arch/arm/mach-imx/imx8/Makefile b/arch/arm/mach-imx/imx8/Makefile
index 7ffb7e95b2..bbb41adbe4 100644
--- a/arch/arm/mach-imx/imx8/Makefile
+++ b/arch/arm/mach-imx/imx8/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_AHAB_BOOT) += ahab.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_SPL_LOAD_IMX_CONTAINER) += image.o parse-container.o
endif
+obj-$(CONFIG_IMX_SNVS_SEC_SC) += snvs_security_sc.o
diff --git a/arch/arm/mach-imx/imx8/snvs_security_sc.c b/arch/arm/mach-imx/imx8/snvs_security_sc.c
new file mode 100644
index 0000000000..73f5651161
--- /dev/null
+++ b/arch/arm/mach-imx/imx8/snvs_security_sc.c
@@ -0,0 +1,923 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019-2020 NXP.
+ */
+
+/*
+ * Configuration of the Tamper pins in different mode:
+ * - default (no tamper pins): _default_
+ * - passive mode expecting VCC on the line: "_passive_vcc_"
+ * - passive mode expecting VCC on the line: "_passive_gnd_"
+ * - active mode: "_active_"
+ */
+
+#include <command.h>
+#include <log.h>
+#include <stddef.h>
+#include <common.h>
+#include <asm/arch/sci/sci.h>
+#include <asm/arch-imx8/imx8-pins.h>
+#include <asm/arch-imx8/snvs_security_sc.h>
+
+/* Access to gd */
+DECLARE_GLOBAL_DATA_PTR;
+
+#define SC_WRITE_CONF 1
+
+#define PGD_HEX_VALUE 0x41736166
+#define SRTC_EN 0x1
+#define DP_EN BIT(5)
+
+struct snvs_security_sc_conf {
+ struct snvs_hp_conf {
+ u32 lock; /* HPLR - HP Lock */
+ u32 __cmd; /* HPCOMR - HP Command */
+ u32 __ctl; /* HPCR - HP Control */
+ u32 secvio_intcfg; /* HPSICR - Security Violation Int
+ * Config
+ */
+ u32 secvio_ctl; /* HPSVCR - Security Violation Control*/
+ u32 status; /* HPSR - HP Status */
+ u32 secvio_status; /* HPSVSR - Security Violation Status */
+ u32 __ha_counteriv; /* High Assurance Counter IV */
+ u32 __ha_counter; /* High Assurance Counter */
+ u32 __rtc_msb; /* Real Time Clock/Counter MSB */
+ u32 __rtc_lsb; /* Real Time Counter LSB */
+ u32 __time_alarm_msb; /* Time Alarm MSB */
+ u32 __time_alarm_lsb; /* Time Alarm LSB */
+ } hp;
+ struct snvs_lp_conf {
+ u32 lock;
+ u32 __ctl;
+ u32 __mstr_key_ctl; /* Master Key Control */
+ u32 secvio_ctl; /* Security Violation Control */
+ u32 tamper_filt_cfg; /* Tamper Glitch Filters Configuration*/
+ u32 tamper_det_cfg; /* Tamper Detectors Configuration */
+ u32 status;
+ u32 __srtc_msb; /* Secure Real Time Clock/Counter MSB */
+ u32 __srtc_lsb; /* Secure Real Time Clock/Counter LSB */
+ u32 __time_alarm; /* Time Alarm */
+ u32 __smc_msb; /* Secure Monotonic Counter MSB */
+ u32 __smc_lsb; /* Secure Monotonic Counter LSB */
+ u32 __pwr_glitch_det; /* Power Glitch Detector */
+ u32 __gen_purpose;
+ u8 __zmk[32]; /* Zeroizable Master Key */
+ u32 __rsvd0;
+ u32 __gen_purposes[4]; /* gp0_30 to gp0_33 */
+ u32 tamper_det_cfg2; /* Tamper Detectors Configuration2 */
+ u32 tamper_det_status; /* Tamper Detectors status */
+ u32 tamper_filt1_cfg; /* Tamper Glitch Filter1 Configuration*/
+ u32 tamper_filt2_cfg; /* Tamper Glitch Filter2 Configuration*/
+ u32 __rsvd1[4];
+ u32 act_tamper1_cfg; /* Active Tamper1 Configuration */
+ u32 act_tamper2_cfg; /* Active Tamper2 Configuration */
+ u32 act_tamper3_cfg; /* Active Tamper3 Configuration */
+ u32 act_tamper4_cfg; /* Active Tamper4 Configuration */
+ u32 act_tamper5_cfg; /* Active Tamper5 Configuration */
+ u32 __rsvd2[3];
+ u32 act_tamper_ctl; /* Active Tamper Control */
+ u32 act_tamper_clk_ctl; /* Active Tamper Clock Control */
+ u32 act_tamper_routing_ctl1;/* Active Tamper Routing Control1 */
+ u32 act_tamper_routing_ctl2;/* Active Tamper Routing Control2 */
+ } lp;
+};
+
+static struct snvs_security_sc_conf snvs_default_config = {
+ .hp = {
+ .lock = 0x1f0703ff,
+ .secvio_ctl = 0x3000007f,
+ },
+ .lp = {
+ .lock = 0x1f0003ff,
+ .secvio_ctl = 0x36,
+ .tamper_filt_cfg = 0,
+ .tamper_det_cfg = 0x76, /* analogic tampers
+ * + rollover tampers
+ */
+ .tamper_det_cfg2 = 0,
+ .tamper_filt1_cfg = 0,
+ .tamper_filt2_cfg = 0,
+ .act_tamper1_cfg = 0,
+ .act_tamper2_cfg = 0,
+ .act_tamper3_cfg = 0,
+ .act_tamper4_cfg = 0,
+ .act_tamper5_cfg = 0,
+ .act_tamper_ctl = 0,
+ .act_tamper_clk_ctl = 0,
+ .act_tamper_routing_ctl1 = 0,
+ .act_tamper_routing_ctl2 = 0,
+ }
+};
+
+static struct snvs_security_sc_conf snvs_passive_vcc_config = {
+ .hp = {
+ .lock = 0x1f0703ff,
+ .secvio_ctl = 0x3000007f,
+ },
+ .lp = {
+ .lock = 0x1f0003ff,
+ .secvio_ctl = 0x36,
+ .tamper_filt_cfg = 0,
+ .tamper_det_cfg = 0x276, /* ET1 will trig on line at GND
+ * + analogic tampers
+ * + rollover tampers
+ */
+ .tamper_det_cfg2 = 0,
+ .tamper_filt1_cfg = 0,
+ .tamper_filt2_cfg = 0,
+ .act_tamper1_cfg = 0,
+ .act_tamper2_cfg = 0,
+ .act_tamper3_cfg = 0,
+ .act_tamper4_cfg = 0,
+ .act_tamper5_cfg = 0,
+ .act_tamper_ctl = 0,
+ .act_tamper_clk_ctl = 0,
+ .act_tamper_routing_ctl1 = 0,
+ .act_tamper_routing_ctl2 = 0,
+ }
+};
+
+static struct snvs_security_sc_conf snvs_passive_gnd_config = {
+ .hp = {
+ .lock = 0x1f0703ff,
+ .secvio_ctl = 0x3000007f,
+ },
+ .lp = {
+ .lock = 0x1f0003ff,
+ .secvio_ctl = 0x36,
+ .tamper_filt_cfg = 0,
+ .tamper_det_cfg = 0xa76, /* ET1 will trig on line at VCC
+ * + analogic tampers
+ * + rollover tampers
+ */
+ .tamper_det_cfg2 = 0,
+ .tamper_filt1_cfg = 0,
+ .tamper_filt2_cfg = 0,
+ .act_tamper1_cfg = 0,
+ .act_tamper2_cfg = 0,
+ .act_tamper3_cfg = 0,
+ .act_tamper4_cfg = 0,
+ .act_tamper5_cfg = 0,
+ .act_tamper_ctl = 0,
+ .act_tamper_clk_ctl = 0,
+ .act_tamper_routing_ctl1 = 0,
+ .act_tamper_routing_ctl2 = 0,
+ }
+};
+
+static struct snvs_security_sc_conf snvs_active_config = {
+ .hp = {
+ .lock = 0x1f0703ff,
+ .secvio_ctl = 0x3000007f,
+ },
+ .lp = {
+ .lock = 0x1f0003ff,
+ .secvio_ctl = 0x36,
+ .tamper_filt_cfg = 0x00800000, /* Enable filtering */
+ .tamper_det_cfg = 0x276, /* ET1 enabled + analogic tampers
+ * + rollover tampers
+ */
+ .tamper_det_cfg2 = 0,
+ .tamper_filt1_cfg = 0,
+ .tamper_filt2_cfg = 0,
+ .act_tamper1_cfg = 0x84001111,
+ .act_tamper2_cfg = 0,
+ .act_tamper3_cfg = 0,
+ .act_tamper4_cfg = 0,
+ .act_tamper5_cfg = 0,
+ .act_tamper_ctl = 0x00010001,
+ .act_tamper_clk_ctl = 0,
+ .act_tamper_routing_ctl1 = 0x1,
+ .act_tamper_routing_ctl2 = 0,
+ }
+};
+
+static struct snvs_security_sc_conf *get_snvs_config(void)
+{
+ return &snvs_default_config;
+}
+
+struct snvs_dgo_conf {
+ u32 tamper_offset_ctl;
+ u32 tamper_pull_ctl;
+ u32 tamper_ana_test_ctl;
+ u32 tamper_sensor_trim_ctl;
+ u32 tamper_misc_ctl;
+ u32 tamper_core_volt_mon_ctl;
+};
+
+static struct snvs_dgo_conf snvs_dgo_default_config = {
+ .tamper_misc_ctl = 0x80000000, /* Lock the DGO */
+};
+
+static struct snvs_dgo_conf snvs_dgo_passive_vcc_config = {
+ .tamper_misc_ctl = 0x80000000, /* Lock the DGO */
+ .tamper_pull_ctl = 0x00000001, /* Pull down ET1 */
+ .tamper_ana_test_ctl = 0x20000000, /* Enable tamper */
+};
+
+static struct snvs_dgo_conf snvs_dgo_passive_gnd_config = {
+ .tamper_misc_ctl = 0x80000000, /* Lock the DGO */
+ .tamper_pull_ctl = 0x00000401, /* Pull up ET1 */
+ .tamper_ana_test_ctl = 0x20000000, /* Enable tamper */
+};
+
+static struct snvs_dgo_conf snvs_dgo_active_config = {
+ .tamper_misc_ctl = 0x80000000, /* Lock the DGO */
+ .tamper_ana_test_ctl = 0x20000000, /* Enable tamper */
+};
+
+static struct snvs_dgo_conf *get_snvs_dgo_config(void)
+{
+ return &snvs_dgo_default_config;
+}
+
+struct tamper_pin_cfg {
+ u32 pad;
+ u32 mux_conf;
+};
+
+static struct tamper_pin_cfg tamper_pin_list_default_config[] = {
+ {SC_P_CSI_D00, 0}, /* Tamp_Out0 */
+ {SC_P_CSI_D01, 0}, /* Tamp_Out1 */
+ {SC_P_CSI_D02, 0}, /* Tamp_Out2 */
+ {SC_P_CSI_D03, 0}, /* Tamp_Out3 */
+ {SC_P_CSI_D04, 0}, /* Tamp_Out4 */
+ {SC_P_CSI_D05, 0}, /* Tamp_In0 */
+ {SC_P_CSI_D06, 0}, /* Tamp_In1 */
+ {SC_P_CSI_D07, 0}, /* Tamp_In2 */
+ {SC_P_CSI_HSYNC, 0}, /* Tamp_In3 */
+ {SC_P_CSI_VSYNC, 0}, /* Tamp_In4 */
+};
+
+static struct tamper_pin_cfg tamper_pin_list_passive_vcc_config[] = {
+ {SC_P_CSI_D05, 0x1c000060}, /* Tamp_In0 */ /* Sel tamper + OD input */
+};
+
+static struct tamper_pin_cfg tamper_pin_list_passive_gnd_config[] = {
+ {SC_P_CSI_D05, 0x1c000060}, /* Tamp_In0 */ /* Sel tamper + OD input */
+};
+
+static struct tamper_pin_cfg tamper_pin_list_active_config[] = {
+ {SC_P_CSI_D00, 0x1a000060}, /* Tamp_Out0 */ /* Sel tamper + OD */
+ {SC_P_CSI_D05, 0x1c000060}, /* Tamp_In0 */ /* Sel tamper + OD input */
+};
+
+#define TAMPER_PIN_LIST_CHOSEN tamper_pin_list_default_config
+
+static struct tamper_pin_cfg *get_tamper_pin_cfg_list(u32 *size)
+{
+ *size = sizeof(TAMPER_PIN_LIST_CHOSEN) /
+ sizeof(TAMPER_PIN_LIST_CHOSEN[0]);
+
+ return TAMPER_PIN_LIST_CHOSEN;
+}
+
+#define SC_CONF_OFFSET_OF(_field) \
+ (offsetof(struct snvs_security_sc_conf, _field))
+
+static u32 ptr_value(u32 *_p)
+{
+ return (_p) ? *_p : 0xdeadbeef;
+}
+
+static int check_write_secvio_config(u32 id, u32 *_p1, u32 *_p2,
+ u32 *_p3, u32 *_p4, u32 *_p5,
+ u32 _cnt)
+{
+ int scierr = 0;
+ u32 d1 = ptr_value(_p1);
+ u32 d2 = ptr_value(_p2);
+ u32 d3 = ptr_value(_p3);
+ u32 d4 = ptr_value(_p4);
+ u32 d5 = ptr_value(_p5);
+
+ scierr = sc_seco_secvio_config(-1, id, SC_WRITE_CONF, &d1, &d2, &d3,
+ &d4, &d4, _cnt);
+ if (scierr != SC_ERR_NONE) {
+ printf("Failed to set secvio configuration\n");
+ debug("Failed to set conf id 0x%x with values ", id);
+ debug("0x%.8x 0x%.8x 0x%.8x 0x%.8x 0x%.8x (cnt: %d)\n",
+ d1, d2, d3, d4, d5, _cnt);
+ goto exit;
+ }
+
+ if (_p1)
+ *(u32 *)_p1 = d1;
+ if (_p2)
+ *(u32 *)_p2 = d2;
+ if (_p3)
+ *(u32 *)_p3 = d3;
+ if (_p4)
+ *(u32 *)_p4 = d4;
+ if (_p5)
+ *(u32 *)_p5 = d5;
+
+exit:
+ return scierr;
+}
+
+#define SC_CHECK_WRITE1(id, _p1) \
+ check_write_secvio_config(id, _p1, NULL, NULL, NULL, NULL, 1)
+
+static int apply_snvs_config(struct snvs_security_sc_conf *cnf)
+{
+ int scierr = 0;
+
+ debug("%s\n", __func__);
+
+ debug("Applying config:\n"
+ "\thp.lock = 0x%.8x\n"
+ "\thp.secvio_ctl = 0x%.8x\n"
+ "\tlp.lock = 0x%.8x\n"
+ "\tlp.secvio_ctl = 0x%.8x\n"
+ "\tlp.tamper_filt_cfg = 0x%.8x\n"
+ "\tlp.tamper_det_cfg = 0x%.8x\n"
+ "\tlp.tamper_det_cfg2 = 0x%.8x\n"
+ "\tlp.tamper_filt1_cfg = 0x%.8x\n"
+ "\tlp.tamper_filt2_cfg = 0x%.8x\n"
+ "\tlp.act_tamper1_cfg = 0x%.8x\n"
+ "\tlp.act_tamper2_cfg = 0x%.8x\n"
+ "\tlp.act_tamper3_cfg = 0x%.8x\n"
+ "\tlp.act_tamper4_cfg = 0x%.8x\n"
+ "\tlp.act_tamper5_cfg = 0x%.8x\n"
+ "\tlp.act_tamper_ctl = 0x%.8x\n"
+ "\tlp.act_tamper_clk_ctl = 0x%.8x\n"
+ "\tlp.act_tamper_routing_ctl1 = 0x%.8x\n"
+ "\tlp.act_tamper_routing_ctl2 = 0x%.8x\n",
+ cnf->hp.lock,
+ cnf->hp.secvio_ctl,
+ cnf->lp.lock,
+ cnf->lp.secvio_ctl,
+ cnf->lp.tamper_filt_cfg,
+ cnf->lp.tamper_det_cfg,
+ cnf->lp.tamper_det_cfg2,
+ cnf->lp.tamper_filt1_cfg,
+ cnf->lp.tamper_filt2_cfg,
+ cnf->lp.act_tamper1_cfg,
+ cnf->lp.act_tamper2_cfg,
+ cnf->lp.act_tamper3_cfg,
+ cnf->lp.act_tamper4_cfg,
+ cnf->lp.act_tamper5_cfg,
+ cnf->lp.act_tamper_ctl,
+ cnf->lp.act_tamper_clk_ctl,
+ cnf->lp.act_tamper_routing_ctl1,
+ cnf->lp.act_tamper_routing_ctl2);
+
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.tamper_filt_cfg),
+ &cnf->lp.tamper_filt_cfg,
+ &cnf->lp.tamper_filt1_cfg,
+ &cnf->lp.tamper_filt2_cfg, NULL,
+ NULL, 3);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Configure AT */
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.act_tamper1_cfg),
+ &cnf->lp.act_tamper1_cfg,
+ &cnf->lp.act_tamper2_cfg,
+ &cnf->lp.act_tamper2_cfg,
+ &cnf->lp.act_tamper2_cfg,
+ &cnf->lp.act_tamper2_cfg, 5);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Configure AT routing */
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.act_tamper_routing_ctl1),
+ &cnf->lp.act_tamper_routing_ctl1,
+ &cnf->lp.act_tamper_routing_ctl2,
+ NULL, NULL, NULL, 2);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Configure AT frequency */
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(lp.act_tamper_clk_ctl),
+ &cnf->lp.act_tamper_clk_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Activate the ATs */
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(lp.act_tamper_ctl),
+ &cnf->lp.act_tamper_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Activate the detectors */
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.tamper_det_cfg),
+ &cnf->lp.tamper_det_cfg,
+ &cnf->lp.tamper_det_cfg2, NULL, NULL,
+ NULL, 2);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Configure LP secvio */
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(lp.secvio_ctl),
+ &cnf->lp.secvio_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Configure HP secvio */
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(hp.secvio_ctl),
+ &cnf->hp.secvio_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Lock access */
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(hp.lock), &cnf->hp.lock);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ scierr = SC_CHECK_WRITE1(SC_CONF_OFFSET_OF(lp.lock), &cnf->lp.lock);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+exit:
+ return (scierr == SC_ERR_NONE) ? 0 : -EIO;
+}
+
+static int dgo_write(u32 _id, u8 _access, u32 *_pdata)
+{
+ int scierr = sc_seco_secvio_dgo_config(-1, _id, _access, _pdata);
+
+ if (scierr != SC_ERR_NONE) {
+ printf("Failed to set dgo configuration\n");
+ debug("Failed to set conf id 0x%x : 0x%.8x", _id, *_pdata);
+ }
+
+ return scierr;
+}
+
+static int apply_snvs_dgo_config(struct snvs_dgo_conf *cnf)
+{
+ int scierr = 0;
+
+ debug("%s\n", __func__);
+
+ debug("Applying config:\n"
+ "\ttamper_offset_ctl = 0x%.8x\n"
+ "\ttamper_pull_ctl = 0x%.8x\n"
+ "\ttamper_ana_test_ctl = 0x%.8x\n"
+ "\ttamper_sensor_trim_ctl = 0x%.8x\n"
+ "\ttamper_misc_ctl = 0x%.8x\n"
+ "\ttamper_core_volt_mon_ctl = 0x%.8x\n",
+ cnf->tamper_offset_ctl,
+ cnf->tamper_pull_ctl,
+ cnf->tamper_ana_test_ctl,
+ cnf->tamper_sensor_trim_ctl,
+ cnf->tamper_misc_ctl,
+ cnf->tamper_core_volt_mon_ctl);
+
+ dgo_write(0x04, 1, &cnf->tamper_offset_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ dgo_write(0x14, 1, &cnf->tamper_pull_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ dgo_write(0x24, 1, &cnf->tamper_ana_test_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ dgo_write(0x34, 1, &cnf->tamper_sensor_trim_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ dgo_write(0x54, 1, &cnf->tamper_core_volt_mon_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ /* Last as it could lock the writes */
+ dgo_write(0x44, 1, &cnf->tamper_misc_ctl);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+exit:
+ return (scierr == SC_ERR_NONE) ? 0 : -EIO;
+}
+
+static int pad_write(u32 _pad, u32 _value)
+{
+ int scierr = sc_pad_set(-1, _pad, _value);
+
+ if (scierr != SC_ERR_NONE) {
+ printf("Failed to set pad configuration\n");
+ debug("Failed to set conf pad 0x%x : 0x%.8x", _pad, _value);
+ }
+
+ return scierr;
+}
+
+static int apply_tamper_pin_list_config(struct tamper_pin_cfg *confs, u32 size)
+{
+ int scierr = 0;
+ u32 idx;
+
+ debug("%s\n", __func__);
+
+ for (idx = 0; idx < size; idx++) {
+ debug("\t idx %d: pad %d: 0x%.8x\n", idx, confs[idx].pad,
+ confs[idx].mux_conf);
+ pad_write(confs[idx].pad, 3 << 30 | confs[idx].mux_conf);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+ }
+
+exit:
+ return (scierr == SC_ERR_NONE) ? 0 : -EIO;
+}
+
+int examples(void)
+{
+ u32 size;
+ struct snvs_security_sc_conf *snvs_conf;
+ struct snvs_dgo_conf *snvs_dgo_conf;
+ struct tamper_pin_cfg *tamper_pin_conf;
+
+ /* Caller */
+ snvs_conf = get_snvs_config();
+ snvs_dgo_conf = get_snvs_dgo_config();
+ tamper_pin_conf = get_tamper_pin_cfg_list(&size);
+
+ /* Default */
+ snvs_conf = &snvs_default_config;
+ snvs_dgo_conf = &snvs_dgo_default_config;
+ tamper_pin_conf = tamper_pin_list_default_config;
+
+ /* Passive tamper expecting VCC on the line */
+ snvs_conf = &snvs_passive_vcc_config;
+ snvs_dgo_conf = &snvs_dgo_passive_vcc_config;
+ tamper_pin_conf = tamper_pin_list_passive_vcc_config;
+
+ /* Passive tamper expecting GND on the line */
+ snvs_conf = &snvs_passive_gnd_config;
+ snvs_dgo_conf = &snvs_dgo_passive_gnd_config;
+ tamper_pin_conf = tamper_pin_list_passive_gnd_config;
+
+ /* Active tamper */
+ snvs_conf = &snvs_active_config;
+ snvs_dgo_conf = &snvs_dgo_active_config;
+ tamper_pin_conf = tamper_pin_list_active_config;
+
+ return !snvs_conf + !snvs_dgo_conf + !tamper_pin_conf;
+}
+
+#ifdef CONFIG_IMX_SNVS_SEC_SC_AUTO
+int snvs_security_sc_init(void)
+{
+ int err = 0;
+
+ struct snvs_security_sc_conf *snvs_conf;
+ struct snvs_dgo_conf *snvs_dgo_conf;
+ struct tamper_pin_cfg *tamper_pin_conf;
+ u32 size;
+
+ debug("%s\n", __func__);
+
+ snvs_conf = get_snvs_config();
+ snvs_dgo_conf = get_snvs_dgo_config();
+
+ tamper_pin_conf = get_tamper_pin_cfg_list(&size);
+
+ err = apply_tamper_pin_list_config(tamper_pin_conf, size);
+ if (err) {
+ debug("Failed to set pins\n");
+ goto exit;
+ }
+
+ err = apply_snvs_dgo_config(snvs_dgo_conf);
+ if (err) {
+ debug("Failed to set dgo\n");
+ goto exit;
+ }
+
+ err = apply_snvs_config(snvs_conf);
+ if (err) {
+ debug("Failed to set snvs\n");
+ goto exit;
+ }
+
+exit:
+ return err;
+}
+#endif /* CONFIG_IMX_SNVS_SEC_SC_AUTO */
+
+static char snvs_cfg_help_text[] =
+ "snvs_cfg\n"
+ "\thp.lock\n"
+ "\thp.secvio_ctl\n"
+ "\tlp.lock\n"
+ "\tlp.secvio_ctl\n"
+ "\tlp.tamper_filt_cfg\n"
+ "\tlp.tamper_det_cfg\n"
+ "\tlp.tamper_det_cfg2\n"
+ "\tlp.tamper_filt1_cfg\n"
+ "\tlp.tamper_filt2_cfg\n"
+ "\tlp.act_tamper1_cfg\n"
+ "\tlp.act_tamper2_cfg\n"
+ "\tlp.act_tamper3_cfg\n"
+ "\tlp.act_tamper4_cfg\n"
+ "\tlp.act_tamper5_cfg\n"
+ "\tlp.act_tamper_ctl\n"
+ "\tlp.act_tamper_clk_ctl\n"
+ "\tlp.act_tamper_routing_ctl1\n"
+ "\tlp.act_tamper_routing_ctl2\n"
+ "\n"
+ "ALL values should be in hexadecimal format";
+
+#define NB_REGISTERS 18
+static int do_snvs_cfg(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ int err = 0;
+ u32 idx = 0;
+
+ struct snvs_security_sc_conf conf = {0};
+
+ if (argc != (NB_REGISTERS + 1))
+ return CMD_RET_USAGE;
+
+ conf.hp.lock = simple_strtoul(argv[++idx], NULL, 16);
+ conf.hp.secvio_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.lock = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.secvio_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_filt_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_det_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_det_cfg2 = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_filt1_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_filt2_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper1_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper2_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper3_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper4_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper5_cfg = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper_clk_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper_routing_ctl1 = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.act_tamper_routing_ctl2 = simple_strtoul(argv[++idx], NULL, 16);
+
+ err = apply_snvs_config(&conf);
+
+ return err;
+}
+
+U_BOOT_CMD(snvs_cfg,
+ NB_REGISTERS + 1, 1, do_snvs_cfg,
+ "Security violation configuration",
+ snvs_cfg_help_text
+);
+
+static char snvs_dgo_cfg_help_text[] =
+ "snvs_dgo_cfg\n"
+ "\ttamper_offset_ctl\n"
+ "\ttamper_pull_ctl\n"
+ "\ttamper_ana_test_ctl\n"
+ "\ttamper_sensor_trim_ctl\n"
+ "\ttamper_misc_ctl\n"
+ "\ttamper_core_volt_mon_ctl\n"
+ "\n"
+ "ALL values should be in hexadecimal format";
+
+static int do_snvs_dgo_cfg(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ int err = 0;
+ u32 idx = 0;
+
+ struct snvs_dgo_conf conf = {0};
+
+ if (argc != (6 + 1))
+ return CMD_RET_USAGE;
+
+ conf.tamper_offset_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.tamper_pull_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.tamper_ana_test_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.tamper_sensor_trim_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.tamper_misc_ctl = simple_strtoul(argv[++idx], NULL, 16);
+ conf.tamper_core_volt_mon_ctl = simple_strtoul(argv[++idx], NULL, 16);
+
+ err = apply_snvs_dgo_config(&conf);
+
+ return err;
+}
+
+U_BOOT_CMD(snvs_dgo_cfg,
+ 7, 1, do_snvs_dgo_cfg,
+ "SNVS DGO configuration",
+ snvs_dgo_cfg_help_text
+);
+
+static char tamper_pin_cfg_help_text[] =
+ "snvs_dgo_cfg\n"
+ "\tpad\n"
+ "\tvalue\n"
+ "\n"
+ "ALL values should be in hexadecimal format";
+
+static int do_tamper_pin_cfg(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ int err = 0;
+ u32 idx = 0;
+
+ struct tamper_pin_cfg conf = {0};
+
+ if (argc != (2 + 1))
+ return CMD_RET_USAGE;
+
+ conf.pad = simple_strtoul(argv[++idx], NULL, 10);
+ conf.mux_conf = simple_strtoul(argv[++idx], NULL, 16);
+
+ err = apply_tamper_pin_list_config(&conf, 1);
+
+ return err;
+}
+
+U_BOOT_CMD(tamper_pin_cfg,
+ 3, 1, do_tamper_pin_cfg,
+ "tamper pin configuration",
+ tamper_pin_cfg_help_text
+);
+
+static char snvs_clear_status_help_text[] =
+ "snvs_clear_status\n"
+ "\tHPSR\n"
+ "\tHPSVSR\n"
+ "\tLPSR\n"
+ "\tLPTDSR\n"
+ "\n"
+ "Write the status registers with the value provided,"
+ " clearing the status";
+
+static int do_snvs_clear_status(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ int scierr = 0;
+ u32 idx = 0;
+
+ struct snvs_security_sc_conf conf = {0};
+
+ if (argc != (2 + 1))
+ return CMD_RET_USAGE;
+
+ conf.lp.status = simple_strtoul(argv[++idx], NULL, 16);
+ conf.lp.tamper_det_status = simple_strtoul(argv[++idx], NULL, 16);
+
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.status),
+ &conf.lp.status, NULL, NULL, NULL,
+ NULL, 1);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+ scierr = check_write_secvio_config(SC_CONF_OFFSET_OF(lp.tamper_det_status),
+ &conf.lp.tamper_det_status, NULL,
+ NULL, NULL, NULL, 1);
+ if (scierr != SC_ERR_NONE)
+ goto exit;
+
+exit:
+ return (scierr == SC_ERR_NONE) ? 0 : 1;
+}
+
+U_BOOT_CMD(snvs_clear_status,
+ 3, 1, do_snvs_clear_status,
+ "snvs clear status",
+ snvs_clear_status_help_text
+);
+
+static char snvs_sec_status_help_text[] =
+ "snvs_sec_status\n"
+ "Display information about the security related to tamper and secvio";
+
+static int do_snvs_sec_status(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ int scierr;
+ u32 idx;
+
+ u32 data[5];
+
+ u32 pads[] = {
+ SC_P_CSI_D00,
+ SC_P_CSI_D01,
+ SC_P_CSI_D02,
+ SC_P_CSI_D03,
+ SC_P_CSI_D04,
+ SC_P_CSI_D05,
+ SC_P_CSI_D06,
+ SC_P_CSI_D07,
+ SC_P_CSI_HSYNC,
+ SC_P_CSI_VSYNC,
+ };
+
+ u32 fuses[] = {
+ 14,
+ 30,
+ 31,
+ 260,
+ 261,
+ 262,
+ 263,
+ 768,
+ };
+
+ struct snvs_reg {
+ u32 id;
+ u32 nb;
+ } snvs[] = {
+ /* Locks */
+ {0x0, 1},
+ {0x34, 1},
+ /* Security violation */
+ {0xc, 1},
+ {0x10, 1},
+ {0x18, 1},
+ {0x40, 1},
+ /* Temper detectors */
+ {0x48, 2},
+ {0x4c, 1},
+ {0xa4, 1},
+ /* */
+ {0x44, 3},
+ {0xe0, 1},
+ {0xe4, 1},
+ {0xe8, 2},
+ /* Misc */
+ {0x3c, 1},
+ {0x5c, 2},
+ {0x64, 1},
+ {0xf8, 2},
+ };
+
+ u32 dgo[] = {
+ 0x0,
+ 0x10,
+ 0x20,
+ 0x30,
+ 0x40,
+ 0x50,
+ };
+
+ /* Pins */
+ printf("Pins:\n");
+ for (idx = 0; idx < ARRAY_SIZE(pads); idx++) {
+ u8 pad_id = pads[idx];
+
+ scierr = sc_pad_get(-1, pad_id, &data[0]);
+ if (scierr == 0)
+ printf("\t- Pin %d: %.8x\n", pad_id, data[0]);
+ else
+ printf("Failed to read Pin %d\n", pad_id);
+ }
+
+ /* Fuses */
+ printf("Fuses:\n");
+ for (idx = 0; idx < ARRAY_SIZE(fuses); idx++) {
+ u32 fuse_id = fuses[idx];
+
+ scierr = sc_misc_otp_fuse_read(-1, fuse_id, &data[0]);
+ if (scierr == 0)
+ printf("\t- Fuse %d: %.8x\n", fuse_id, data[0]);
+ else
+ printf("Failed to read Fuse %d\n", fuse_id);
+ }
+
+ /* SNVS */
+ printf("SNVS:\n");
+ for (idx = 0; idx < ARRAY_SIZE(snvs); idx++) {
+ struct snvs_reg *reg = &snvs[idx];
+
+ scierr = sc_seco_secvio_config(-1, reg->id, 0, &data[0],
+ &data[1], &data[2], &data[3],
+ &data[4], reg->nb);
+ if (scierr == 0) {
+ int subidx;
+
+ printf("\t- SNVS %.2x(%d):", reg->id, reg->nb);
+ for (subidx = 0; subidx < reg->nb; subidx++)
+ printf(" %.8x", data[subidx]);
+ printf("\n");
+ } else {
+ printf("Failed to read SNVS %d\n", reg->id);
+ }
+ }
+
+ /* DGO */
+ printf("DGO:\n");
+ for (idx = 0; idx < ARRAY_SIZE(dgo); idx++) {
+ u8 dgo_id = dgo[idx];
+
+ scierr = sc_seco_secvio_dgo_config(-1, dgo_id, 0, &data[0]);
+ if (scierr == 0)
+ printf("\t- DGO %.2x: %.8x\n", dgo_id, data[0]);
+ else
+ printf("Failed to read DGO %d\n", dgo_id);
+ }
+
+ return 0;
+}
+
+U_BOOT_CMD(snvs_sec_status,
+ 1, 1, do_snvs_sec_status,
+ "tamper pin configuration",
+ snvs_sec_status_help_text
+);
generated by cgit (git 2.34.1) at 2024-12-26 17:59:06 +0000