ENGR00217114-1 MX6 U-Boot, Secure Boot, one code base for MX6Q/DL/SL

Move the secure boot related implementation code from mx6q_arm2.c to
mx6/generic.c. In this way the HAB feature can be shared by all MX6
platforms

Signed-off-by: Eric Sun <jian.sun@freescale.com>

1 files changed, 177 insertions, 0 deletions

diff --git a/cpu/arm_cortexa8/mx6/generic.c b/cpu/arm_cortexa8/mx6/generic.c
index a762498..c844594 100644
--- a/cpu/arm_cortexa8/mx6/generic.c
+++ b/cpu/arm_cortexa8/mx6/generic.c
@@ -47,6 +47,10 @@
 
 #include <usb/regs-usbphy-mx6.h>
 
+#if defined(CONFIG_SECURE_BOOT)
+#include <asm/arch/mx6_secure.h>
+#endif
+
 enum pll_clocks {
 	CPU_PLL1,	/* System PLL */
 	BUS_PLL2,	/* System Bus PLL*/
@@ -1208,6 +1212,179 @@ U_BOOT_CMD(
 	"");
 #endif
 
+#ifdef CONFIG_SECURE_BOOT
+/* -------- start of HAB API updates ------------*/
+#define hab_rvt_report_event ((hab_rvt_report_event_t *)HAB_RVT_REPORT_EVENT)
+#define hab_rvt_report_status ((hab_rvt_report_status_t *)HAB_RVT_REPORT_STATUS)
+#define hab_rvt_authenticate_image \
+	((hab_rvt_authenticate_image_t *)HAB_RVT_AUTHENTICATE_IMAGE)
+#define hab_rvt_entry ((hab_rvt_entry_t *) HAB_RVT_ENTRY)
+#define hab_rvt_exit ((hab_rvt_exit_t *) HAB_RVT_EXIT)
+#define hab_rvt_clock_init HAB_RVT_CLOCK_INIT
+
+/*
+ * +------------+  0x0 (DDR_UIMAGE_START) -
+ * |   Header   |                          |
+ * +------------+  0x40                    |
+ * |            |                          |
+ * |            |                          |
+ * |            |                          |
+ * |            |                          |
+ * | Image Data |                          |
+ * .            |                          |
+ * .            |                           > Stuff to be authenticated ----+
+ * .            |                          |                                |
+ * |            |                          |                                |
+ * |            |                          |                                |
+ * +------------+                          |                                |
+ * |            |                          |                                |
+ * | Fill Data  |                          |                                |
+ * |            |                          |                                |
+ * +------------+ 0x003F_DFE0              |                                |
+ * |    IVT     |                          |                                |
+ * +------------+ 0x003F_E000             -                                 |
+ * |            |                                                           |
+ * |  CSF DATA  | <---------------------------------------------------------+
+ * |            |
+ * +------------+
+ * |            |
+ * | Fill Data  |
+ * |            |
+ * +------------+ 0x0040_0000
+ */
+
+#ifndef CONFIG_MX6SL
+#define DDR_UIMAGE_START	0x10800000
+#else
+#define DDR_UIMAGE_START	0x80800000
+#endif
+
+#define DDR_UIMAGE_LENGTH	0x400000
+#define DDR_IVT_OFFSET		0x3FDFE0
+#define OCOTP_CFG5_OFFSET	0x460
+
+int check_hab_enable(void)
+{
+	u32 reg = 0;
+	int result = 0;
+
+	reg = readl(IMX_OTP_BASE + OCOTP_CFG5_OFFSET);
+	if ((reg & 0x2) == 0x2)
+		result = 1;
+
+	return result;
+}
+
+void display_event(uint8_t *event_data, size_t bytes)
+{
+	uint32_t i;
+	if ((event_data) && (bytes > 0)) {
+		for (i = 0; i < bytes; i++) {
+			if (i == 0)
+				printf("\t0x%02x", event_data[i]);
+			else if ((i % 8) == 0)
+				printf("\n\t0x%02x", event_data[i]);
+			else
+				printf(" 0x%02x", event_data[i]);
+		}
+	}
+}
+
+int get_hab_status(void)
+{
+	uint32_t index = 0; /* Loop index */
+	uint8_t event_data[128]; /* Event data buffer */
+	size_t bytes = sizeof(event_data); /* Event size in bytes */
+	hab_config_t config = 0;
+	hab_state_t state = 0;
+
+	/* Check HAB status */
+	if (hab_rvt_report_status(&config, &state) != HAB_SUCCESS) {
+		printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
+			config, state);
+
+		/* Display HAB Error events */
+		while (hab_rvt_report_event(HAB_FAILURE, index, event_data,
+				&bytes) == HAB_SUCCESS) {
+			printf("\n");
+			printf("--------- HAB Event %d -----------------\n",
+					index + 1);
+			printf("event data:\n");
+			display_event(event_data, bytes);
+			printf("\n");
+			bytes = sizeof(event_data);
+			index++;
+		}
+	}
+	/* Display message if no HAB events are found */
+	else {
+		printf("\nHAB Configuration: 0x%02x, HAB State: 0x%02x\n",
+			config, state);
+		printf("No HAB Events Found!\n\n");
+	}
+	return 0;
+}
+
+void hab_caam_clock_enable(void)
+{
+	u32 reg = 0;
+
+	reg = readl(CCM_BASE_ADDR + CLKCTL_CCGR0); /* CCGR0 */
+	reg |= 0x3F00; /*CG4 ~ CG6, enable CAAM clocks*/
+	writel(reg, CCM_BASE_ADDR + CLKCTL_CCGR0);
+}
+
+
+void hab_caam_clock_disable(void)
+{
+	u32 reg = 0;
+
+	reg = readl(CCM_BASE_ADDR + CLKCTL_CCGR0); /* CCGR0 */
+	reg &= ~0x3F00; /*CG4 ~ CG6, disable CAAM clocks*/
+	writel(reg, CCM_BASE_ADDR + CLKCTL_CCGR0);
+}
+
+uint32_t authenticate_image(void)
+{
+	uint32_t load_addr = 0;
+	size_t bytes;
+	ptrdiff_t ivt_offset = DDR_IVT_OFFSET;
+	int result = 0;
+	ulong start;
+
+	if (check_hab_enable() == 1) {
+		printf("\nAuthenticate uImage from DDR location 0x%lx...\n",
+			DDR_UIMAGE_START);
+
+		hab_caam_clock_enable();
+
+		if (hab_rvt_entry() == HAB_SUCCESS) {
+			start = DDR_UIMAGE_START;
+			bytes = DDR_UIMAGE_LENGTH;
+			load_addr = (uint32_t)hab_rvt_authenticate_image(
+					HAB_CID_UBOOT,
+					ivt_offset, (void **)&start,
+					(size_t *)&bytes, NULL);
+			if (hab_rvt_exit() != HAB_SUCCESS) {
+				printf("hab exit function fail\n");
+				load_addr = 0;
+			}
+		} else
+			printf("hab entry function fail\n");
+
+		hab_caam_clock_disable();
+
+		get_hab_status();
+	}
+
+	if ((!check_hab_enable()) || (load_addr != 0))
+		result = 1;
+
+	return result;
+}
+/* ----------- end of HAB API updates ------------*/
+#endif
+
 
 #ifdef CONFIG_ANDROID_RECOVERY
 struct reco_envs supported_reco_envs[BOOT_DEV_NUM] = {