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-rw-r--r--arch/arm/cpu/armv7/mx6/clock.c27
-rw-r--r--arch/arm/cpu/armv7/mx6/hab.c169
-rw-r--r--arch/arm/cpu/armv7/mx6/soc.c15
-rw-r--r--arch/arm/include/asm/arch-mx6/clock.h1
4 files changed, 211 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index 336e557..d200531 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -642,6 +642,33 @@ int enable_pcie_clock(void)
BM_ANADIG_PLL_ENET_ENABLE_PCIE);
}
+#ifdef CONFIG_SECURE_BOOT
+void hab_caam_clock_enable(unsigned char enable)
+{
+ u32 reg;
+
+ /* CG4 ~ CG6, CAAM clocks */
+ reg = __raw_readl(&imx_ccm->CCGR0);
+ if (enable)
+ reg |= (MXC_CCM_CCGR0_CAAM_WRAPPER_IPG_MASK |
+ MXC_CCM_CCGR0_CAAM_WRAPPER_ACLK_MASK |
+ MXC_CCM_CCGR0_CAAM_SECURE_MEM_MASK);
+ else
+ reg &= ~(MXC_CCM_CCGR0_CAAM_WRAPPER_IPG_MASK |
+ MXC_CCM_CCGR0_CAAM_WRAPPER_ACLK_MASK |
+ MXC_CCM_CCGR0_CAAM_SECURE_MEM_MASK);
+ __raw_writel(reg, &imx_ccm->CCGR0);
+
+ /* EMI slow clk */
+ reg = __raw_readl(&imx_ccm->CCGR6);
+ if (enable)
+ reg |= MXC_CCM_CCGR6_EMI_SLOW_MASK;
+ else
+ reg &= ~MXC_CCM_CCGR6_EMI_SLOW_MASK;
+ __raw_writel(reg, &imx_ccm->CCGR6);
+}
+#endif
+
unsigned int mxc_get_clock(enum mxc_clock clk)
{
switch (clk) {
diff --git a/arch/arm/cpu/armv7/mx6/hab.c b/arch/arm/cpu/armv7/mx6/hab.c
index f6810a6..8dee595 100644
--- a/arch/arm/cpu/armv7/mx6/hab.c
+++ b/arch/arm/cpu/armv7/mx6/hab.c
@@ -1,12 +1,14 @@
/*
- * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2010-2014 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
+#include <asm/system.h>
#include <asm/arch/hab.h>
+#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
/* -------- start of HAB API updates ------------*/
@@ -71,6 +73,44 @@
((hab_rvt_exit_t *)HAB_RVT_EXIT) \
)
+#define IVT_SIZE 0x20
+#define ALIGN_SIZE 0x1000
+#define CSF_PAD_SIZE 0x2000
+#define MX6DQ_PU_IROM_MMU_EN_VAR 0x009024a8
+#define MX6DLS_PU_IROM_MMU_EN_VAR 0x00901dd0
+#define MX6SL_PU_IROM_MMU_EN_VAR 0x00900a18
+
+/*
+ * +------------+ 0x0 (DDR_UIMAGE_START) -
+ * | Header | |
+ * +------------+ 0x40 |
+ * | | |
+ * | | |
+ * | | |
+ * | | |
+ * | Image Data | |
+ * . | |
+ * . | > Stuff to be authenticated ----+
+ * . | | |
+ * | | | |
+ * | | | |
+ * +------------+ | |
+ * | | | |
+ * | Fill Data | | |
+ * | | | |
+ * +------------+ Align to ALIGN_SIZE | |
+ * | IVT | | |
+ * +------------+ + IVT_SIZE - |
+ * | | |
+ * | CSF DATA | <---------------------------------------------------------+
+ * | |
+ * +------------+
+ * | |
+ * | Fill Data |
+ * | |
+ * +------------+ + CSF_PAD_SIZE
+ */
+
bool is_hab_enabled(void)
{
struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
@@ -144,6 +184,108 @@ int get_hab_status(void)
return 0;
}
+uint32_t authenticate_image(uint32_t ddr_start, uint32_t image_size)
+{
+ uint32_t load_addr = 0;
+ size_t bytes;
+ ptrdiff_t ivt_offset = 0;
+ int result = 0;
+ ulong start;
+ hab_rvt_authenticate_image_t *hab_rvt_authenticate_image;
+ hab_rvt_entry_t *hab_rvt_entry;
+ hab_rvt_exit_t *hab_rvt_exit;
+
+ hab_rvt_authenticate_image = hab_rvt_authenticate_image_p;
+ hab_rvt_entry = hab_rvt_entry_p;
+ hab_rvt_exit = hab_rvt_exit_p;
+
+ if (is_hab_enabled()) {
+ printf("\nAuthenticate image from DDR location 0x%x...\n",
+ ddr_start);
+
+ hab_caam_clock_enable(1);
+
+ if (hab_rvt_entry() == HAB_SUCCESS) {
+ /* If not already aligned, Align to ALIGN_SIZE */
+ ivt_offset = (image_size + ALIGN_SIZE - 1) &
+ ~(ALIGN_SIZE - 1);
+
+ start = ddr_start;
+ bytes = ivt_offset + IVT_SIZE + CSF_PAD_SIZE;
+#ifdef DEBUG
+ printf("\nivt_offset = 0x%x, ivt addr = 0x%x\n",
+ ivt_offset, ddr_start + ivt_offset);
+ puts("Dumping IVT\n");
+ print_buffer(ddr_start + ivt_offset,
+ (void *)(ddr_start + ivt_offset),
+ 4, 0x8, 0);
+
+ puts("Dumping CSF Header\n");
+ print_buffer(ddr_start + ivt_offset+IVT_SIZE,
+ (void *)(ddr_start + ivt_offset+IVT_SIZE),
+ 4, 0x10, 0);
+
+ get_hab_status();
+
+ puts("\nCalling authenticate_image in ROM\n");
+ printf("\tivt_offset = 0x%x\n", ivt_offset);
+ printf("\tstart = 0x%08lx\n", start);
+ printf("\tbytes = 0x%x\n", bytes);
+#endif
+ /*
+ * If the MMU is enabled, we have to notify the ROM
+ * code, or it won't flush the caches when needed.
+ * This is done, by setting the "pu_irom_mmu_enabled"
+ * word to 1. You can find its address by looking in
+ * the ROM map. This is critical for
+ * authenticate_image(). If MMU is enabled, without
+ * setting this bit, authentication will fail and may
+ * crash.
+ */
+ /* Check MMU enabled */
+ if (get_cr() & CR_M) {
+ if (is_cpu_type(MXC_CPU_MX6Q) ||
+ is_cpu_type(MXC_CPU_MX6D)) {
+ /*
+ * This won't work on Rev 1.0.0 of
+ * i.MX6Q/D, since their ROM doesn't
+ * do cache flushes. don't think any
+ * exist, so we ignore them.
+ */
+ writel(1, MX6DQ_PU_IROM_MMU_EN_VAR);
+ } else if (is_cpu_type(MXC_CPU_MX6DL) ||
+ is_cpu_type(MXC_CPU_MX6SOLO)) {
+ writel(1, MX6DLS_PU_IROM_MMU_EN_VAR);
+ } else if (is_cpu_type(MXC_CPU_MX6SL)) {
+ writel(1, MX6SL_PU_IROM_MMU_EN_VAR);
+ }
+ }
+
+ 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) {
+ puts("hab exit function fail\n");
+ load_addr = 0;
+ }
+ } else {
+ puts("hab entry function fail\n");
+ }
+
+ hab_caam_clock_enable(0);
+
+ get_hab_status();
+ } else {
+ puts("hab fuse not enabled\n");
+ }
+
+ if ((!is_hab_enabled()) || (load_addr != 0))
+ result = 1;
+
+ return result;
+}
+
int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
if ((argc != 1)) {
@@ -156,8 +298,33 @@ int do_hab_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return 0;
}
+static int do_authenticate_image(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ ulong addr, ivt_offset;
+ int rcode = 0;
+
+ if (argc < 3)
+ return CMD_RET_USAGE;
+
+ addr = simple_strtoul(argv[1], NULL, 16);
+ ivt_offset = simple_strtoul(argv[2], NULL, 16);
+
+ rcode = authenticate_image(addr, ivt_offset);
+
+ return rcode;
+}
+
U_BOOT_CMD(
hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
"display HAB status",
""
);
+
+U_BOOT_CMD(
+ hab_auth_img, 3, 0, do_authenticate_image,
+ "authenticate image via HAB",
+ "addr ivt_offset\n"
+ "addr - image hex address\n"
+ "ivt_offset - hex offset of IVT in the image"
+ );
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index ba21cfe..05683a3 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -273,10 +273,25 @@ int board_postclk_init(void)
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
+#if defined(CONFIG_SYS_ARM_CACHE_WRITETHROUGH)
+ enum dcache_option option = DCACHE_WRITETHROUGH;
+#else
+ enum dcache_option option = DCACHE_WRITEBACK;
+#endif
+
/* Avoid random hang when download by usb */
invalidate_dcache_all();
+
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
+
+ /* Enable caching on OCRAM and ROM */
+ mmu_set_region_dcache_behaviour(ROMCP_ARB_BASE_ADDR,
+ ROMCP_ARB_END_ADDR,
+ option);
+ mmu_set_region_dcache_behaviour(IRAM_BASE_ADDR,
+ IRAM_SIZE,
+ option);
}
#endif
diff --git a/arch/arm/include/asm/arch-mx6/clock.h b/arch/arm/include/asm/arch-mx6/clock.h
index c11674f..3c58a0a 100644
--- a/arch/arm/include/asm/arch-mx6/clock.h
+++ b/arch/arm/include/asm/arch-mx6/clock.h
@@ -53,6 +53,7 @@ u32 imx_get_uartclk(void);
u32 imx_get_fecclk(void);
unsigned int mxc_get_clock(enum mxc_clock clk);
void setup_gpmi_io_clk(u32 cfg);
+void hab_caam_clock_enable(unsigned char enable);
void enable_ocotp_clk(unsigned char enable);
void enable_usboh3_clk(unsigned char enable);
void enable_uart_clk(unsigned char enable);
generated by cgit v1.1 at 2024-11-11 18:47:44 +0000